SYNAPTIC PHARMACEUTICAL CORP
10-K, 1999-03-25
COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH
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                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549
                                    FORM 10-K
 Mark One:
  [X]       ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                 SECURITIES EXCHANGE ACT OF 1934 (FEE REQUIRED)
                   For the fiscal year ended December 31, 1998
 
                                      OR

  [ ]        TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
              THE SECURITIES EXCHANGE ACT OF 1934 (NO FEE REQUIRED)

                         Commission File Number 0-27324

                       SYNAPTIC PHARMACEUTICAL CORPORATION
             (Exact name of registrant as specified in its charter)

                                    Delaware
                          (State or other jurisdiction
                        of incorporation or organization)

                                215 College Road
                                   Paramus, NJ
                    (Address of principal executive offices)

                                   22-2859704
                      (I.R.S. Employer Identification No.)


        07652                                 (201) 261-1331
     (Zip Code)            (Registrant's telephone number, including area code)
                                                  
                               

           Securities registered pursuant to Section 12(b) of the Act:
                                      None

           Securities registered pursuant to Section 12(g) of the Act:
                     Common Stock, par value $.01 per share
         Rights to Purchase Series A Junior Convertible Preferred Stock,
                            par value $.01 per share
                                (Title of Class)

         Indicate  by check  mark  whether  the  registrant:  (1) has  filed all
reports  required to be filed by Section 13 or 15(d) of the Securities  Exchange
Act of 1934, as amended (the "Exchange Act"), during the preceding 12 months (or
for such shorter  period that the  registrant was required to file such reports)
and (2) has been subject to such filing requirements for the past 90 days.

                                    Yes X No

         Indicate by check mark if disclosure of delinquent  filers  pursuant to
Item 405 of Regulation S-K is not contained  herein,  and will not be contained,
to the best of  registrant's  knowledge,  in  definitive  proxy  or  information
statements  incorporated  by  reference  in Part  III of this  Form  10-K or any
amendment to this Form 10-K. [ ]

         The  approximate  aggregate  market  value of the voting and non voting
common  equity  held  by  non-affiliates  of the  registrant  was  approximately
$123,067,000 as of February 15, 1999, based upon the closing price of the Common
Stock as reported on The Nasdaq Stock Market on such date.  For purposes of this
calculation, shares of Common Stock held by directors, officers and stockholders
whose  ownership in the  registrant  is known by the  registrant  to exceed five
percent have been  excluded.  This number is provided  only for purposes of this
report and does not represent an admission by either the  registrant or any such
person as to the status of such person.

         As  of  February  15,  1999,  there  were  10,727,906   shares  of  the
registrant's Common Stock outstanding.

                       DOCUMENTS INCORPORATED BY REFERENCE

         Portions of the Synaptic Pharmaceutical Corporation Proxy Statement, to
be filed not later than 120 days after December 31, 1998, in connection with the
registrant's  1999  Annual  Meeting of  Stockholders,  referred to herein as the
"Proxy Statement," are incorporated by reference into Part III of this Report on
Form 10-K.



<PAGE>



                       SYNAPTIC PHARMACEUTICAL CORPORATION

      INDEX TO REPORT ON FORM 10-K FOR FISCAL YEAR ENDED DECEMBER 31, 1998



                                     Part I
                                                                          Page
                                                                          ----
Item  1. Business.....................................................      1
Item  2. Properties...................................................     33
Item  3. Legal Proceedings............................................     33
Item  4. Submission of Matters to a Vote of Securityholders...........     33

                                     Part II

Item  5. Market for Registrant's Common Equity and Related
           Stockholder Matters........................................     34
Item  6. Selected Financial Data......................................     35
Item  7. Management's Discussion and Analysis of Financial Condition
           and Results of Operations..................................     35
Item 7A. Quantitative and Qualitative Disclosures About Market Risk...     45
Item  8. Financial Statements.........................................     47
Item  9. Changes in and Disagreements with Accountants on Accounting
           and Financial Disclosure...................................     68

                                    Part III

Item 10. Directors and Executive Officers of the Registrant...........     68
Item 11. Executive Compensation.......................................     68
Item 12. Security Ownership of Certain Beneficial Owners
           and Management.............................................     68
Item 13. Certain Relationships and Related Transactions...............     68

                                     Part IV

Item 14. Exhibits, Financial Statement Schedules and Reports
           on Form 8-K................................................     69




                                       (i)

<PAGE>



                                     Part I


Item 1.  Business

Overview

         Synaptic Pharmaceutical  Corporation ("Synaptic" or the "Company") is a
biotechnology company engaged in the development of a broad platform of enabling
technology which it calls "human receptor- targeted drug design technology." The
Company is utilizing  this  technology to discover and clone the genes that code
for human receptor subtypes that may be associated with specific disorders.  The
Company and its collaborative partners and other licensees are in turn utilizing
the cloned receptor genes to design  compounds that can potentially be developed
as drugs for treating these disorders.

         Synaptic's human receptor-targeted drug design technology is the result
of an integrated approach to four life science fields:  molecular biology;  cell
biology;  pharmacology;  and chemistry,  including medicinal,  combinatorial and
computer-assisted chemistry. This technology allows chemists to focus their drug
discovery  efforts on a specific  human  receptor  subtype  target.  The Company
believes  that  its  technology  provides  three  distinct  advantages  over the
traditional  approach to drug discovery in which compounds are screened  against
animal tissues containing many different receptor subtypes.  First, by having an
isolated  receptor  subtype  as a target,  chemists  are  better  able to design
compounds  that  interact  with only the target of  interest  and not with other
receptors that may be responsible for side effects. Second, the Company believes
that using human  receptor  subtypes as drug design  targets will  substantially
reduce  the number of  problems  that often  arise  during the drug  development
process as a result of differences in a compound's  activity in humans  compared
to its activity in animal models.  Third,  Synaptic believes that its technology
may be more  cost-effective  than traditional drug discovery because the Company
and its  collaborative  partners and other  licensees  can eliminate or redesign
compounds that react poorly with human receptor  targets prior to initiating the
costly activities related to preclinical testing and clinical trials.

         Synaptic focuses its receptor and drug discovery  efforts on members of
a receptor  superfamily known as "G  protein-coupled  receptors" or "GPCRs." The
Company  selected this receptor  superfamily for two principal  reasons.  First,
many GPCRs have been shown to be  effective  drug  targets,  as evidenced by the
commercial availability of drugs for a wide variety of therapeutic  applications
that  work  by  means  of  their  interactions  with  GPCRs.  Second,  the  GPCR
superfamily  is  extremely  large and diverse and,  based on several  estimates,
exceeds  several  thousand  receptors,  with its members  being  involved in the
mediation of a broad array of physiological functions.  Accordingly, the Company
believes that there are substantial  opportunities  to use many receptors within
the GPCR superfamily as targets for novel drugs.

         The Company  employs a number of approaches to discover and clone genes
that code for GPCRs. Its principal approach, until recently, has been a targeted
genomics  approach.  This  approach  involves  two  steps.  First,  the  Company
identifies  families of receptors within the GPCR superfamily that are, based on
available  pharmacological  information  relating to these families suggesting a
potential  role  in  physiological  disorders,  of  particular  interest  to the
Company.  The Company then devises strategies to enable it to discover and clone
receptor  genes within the targeted  families.  After the Company  discovers and
clones two or more  members of a targeted  receptor  family,  its strategy is to
seek a  collaborative  partner  with which it can  attempt to design and develop
drugs that act at one or more of the cloned receptors.


                                        1

<PAGE>



         While the Company has been successful  employing this targeted genomics
approach,  as evidenced by collaborations with pharmaceutical  companies focused
on four different  families of GPCRs,  it has begun to shift the emphasis in its
gene  discovery  efforts from the targeted  genomics  approach to a  nontargeted
genomics  approach.  This shift stems from certain  developments in the field of
gene  discovery  over the past several  years.  First,  due in large part to the
successful  targeted  cloning  efforts of the  Company  and other  biotechnology
companies, pharmaceutical companies and academic institutions, many of the genes
that  code  for  members  of GPCR  families  for  which  there  exists a body of
pharmacological  information  suggesting a role in physiological  disorders have
now been  cloned.  As a result,  most of the genes that  remain to be cloned are
those that code for members of GPCR  families for which there may be little,  if
any,  pharmacological  information,  and  those  that code for  receptors  whose
families  have  not  yet  been  identified  and  for  which  there  is a lack of
biological  knowledge.  Second, there has been a tremendous increase in interest
over the past  several  years in  determining  the  sequence of the entire human
genome.  This interest has spurred  significant  competition  and  technological
advances in the field of genomics.  Many of these technological advances involve
a  "nontargeted"  approach  to  gene  discovery  in  that  they  facilitate  the
identification  of genes  from large  collections  of DNA  sequence  information
without,  in the first  instance,  requiring  the design and  implementation  of
strategies aimed at cloning the members of specific receptor families. While the
nontargeted  approaches to gene discovery often yield genes about which there is
little, if any, existing biological knowledge, they have greatly accelerated the
rate at which novel genes are being discovered. Given these developments and the
fact that there is a finite number of genes in the human genome, in an effort to
remain  competitive  in the field of gene  discovery,  the  Company has begun to
shift the  emphasis  in its gene  discovery  efforts  from a  targeted  genomics
approach to a nontargeted genomics approach.

         The Company's nontargeted genomics approach involves the integration of
certain  proprietary  molecular biology technology of the Company with automated
gene sequencing  technologies and bioinformatics.  In formulating this approach,
the Company was intent upon addressing a problem commonly experienced by many in
industry and in academia who are employing  nontargeted genomics technologies to
identify  novel  genes.  The  problem  is one of  "redundancy."  Many  of  these
technologies  are  repeatedly  yielding  the same  sequences  of genes  that are
abundantly  expressed  in the tissues of  interest,  but are failing to identify
genes expressed at low levels. It is the Company's belief that many of the genes
that are expressed at low levels may be valuable targets for the design of novel
drugs.  Accordingly,  the molecular  biology  technology used by Synaptic in its
nontargeted  genomics  approach has been designed to facilitate the discovery of
novel genes by  significantly  reducing  the  redundancy  produced by many other
genomics  technologies.  This approach to gene discovery  yields for the Company
both genes that code for GPCRs,  which continue to be of primary interest to the
Company, and genes that code for other proteins,  which the Company believes may
be valuable targets for drug discovery.

         The  discoveries  resulting  from the  Company's  nontargeted  genomics
approach will, in general,  be genes that code for proteins of unknown  function
and  whose  potential  as  valuable  drug  targets  has  not  been  established.
Therefore,  the Company  does not believe  that the types of  collaborations  in
which  it  has  engaged  with  pharmaceutical   companies  in  the  past,  which
collaborations  have had as their focus  genes  whose  value as drug  targets is
known  or  suspected,  will be  available  to it  with  respect  to such  genes.
Accordingly,  rather than  seeking to  establish  collaborations  focused on its
nontargeted gene discoveries,  the Company will seek to license certain of these
discoveries to pharmaceutical  companies.  Any research necessary for evaluating
the licensed  discoveries  as potential  drug targets and any drug discovery and
development  efforts  focused  on these  discoveries  would  thus be within  the
province of the Company's licensees and would be conducted  independently of the
Company.  In addition,  the Company intends to retain certain of its nontargeted
gene discoveries for internal evaluation and possible subsequent licensing.


                                        2

<PAGE>



         To  date,  gene  discoveries  resulting  from  the  Company's  targeted
genomics  approach  have led to  collaborations  between  the  Company  and five
pharmaceutical  companies:  Eli Lilly and Company  ("Lilly"),  Merck & Co., Inc.
("Merck"),  Novartis Pharma AG ("Novartis"),  Warner-Lambert  Company  ("Warner-
Lambert") and Grunenthal GmbH  ("Grunenthal").  The collaboration with Lilly and
the collaboration with Merck have each yielded one compound that is currently in
clinical  development.  As of the date of this Report, the  collaborations  with
Lilly,  Warner-  Lambert  and  Grunenthal  were  ongoing.   Although  the  Merck
collaboration  ended in February 1999, and the Novartis  collaboration  ended in
August 1998, Merck and Novartis each continue to have licenses to certain of the
Company's  technology  and patent  rights,  and the Company  will be entitled to
payments if certain  milestones are achieved and royalties on sales of any drugs
that may ultimately be developed through the use of the Company's technology. In
addition  to the  licenses  it  granted  in  connection  with its  collaborative
arrangements,  the Company has licensed  certain  patent rights  relating to its
gene discoveries to Glaxo Group Limited ("Glaxo").

         Certain   discussions  in  this  Report  refer  to  various  phases  of
preclinical  testing and clinical trials.  For a description of such phases, see
the footnotes in the table entitled "Summary of Certain Drug Discovery Programs"
set forth under "--Drug Discovery Programs:  Focus on G Protein-Coupled Receptor
Superfamily" below.

                                        3

<PAGE>



Business Strategy

         Synaptic's   business  strategy  is  to  develop,   together  with  its
collaborative  partners,  a broad array of drugs based upon the Company's  human
receptor-targeted  drug design technology,  as well as to license certain of its
technology  to third  parties  which  will  use the  technology  in  their  drug
development efforts. This strategy consists of four principal objectives.

         To Discover and Clone G Protein-Coupled Receptor Genes

         The  first  objective  of  the  Company's   business   strategy  is  to
aggressively  discover  and clone G  protein-  coupled  receptor  genes,  and to
aggressively  seek patent  protection for such  discoveries.  Historically,  the
Company  has  employed  a  targeted  approach  to gene  discovery  in which  its
molecular  biology expertise is used to discover and clone receptor genes within
families  of GPCRs  identified  by the Company as being of  particular  interest
based  upon  their  potential  role in certain  physiological  disorders.  As of
February 15, 1999,  Synaptic had successfully  cloned a number of receptor genes
using this  approach and had received  United States  patents  relating to 13 of
these receptor genes and related drug discovery  systems.  In addition,  at that
date  several  United  States  patent  applications  relating  to the  Company's
receptor gene discoveries were pending,  several  corresponding patents had been
issued in other countries and additional  corresponding  patent applications had
been filed in other countries.

         The Company has more recently  established  a  nontargeted  approach to
gene discovery based upon a proprietary  molecular biology technology  developed
by  Synaptic.  The  Company  intends  to  seek  patent  protection  for  certain
discoveries  resulting from its  nontargeted  genomics  approach.  See "Patents,
Proprietary Technology and Trade Secrets" below.

         To Discover and Design Potential Drugs with Human Receptor-Targeted
            Drug Design Technology

         The Company's  second  objective is to discover and design,  or to have
its collaborative  partners and other licensees  discover and design,  potential
drugs  through  the use of the  Company's  human  receptor-targeted  drug design
technology.  The Company and its collaborative  partners and other licensees are
using this technology to design,  synthesize and optimize  compounds for further
development.   The  Company's  two  approaches  to  designing  and  synthesizing
compounds include medicinal chemistry and combinatorial chemistry, each of which
is supported by the Company's expertise in computer-assisted molecular modeling.
With both  approaches,  the  Company's  chemists and  pharmacologists  use their
knowledge of the structures of ligands and targeted  receptor subtypes to design
and synthesize initial chemical structures that are then optimized.

         To Leverage Resources and Generate Royalty-Based Revenues

         The  Company's  third  objective is to leverage  resources and generate
royalty-based  revenues through  collaborations and licensing  arrangements with
pharmaceutical  companies.  Towards this objective, the Company has focused most
of its  scientific  resources  on the  discovery  and design  phases of the drug
development  process.  To date, the Company has entered into four  royalty-based
collaborations  in  which  its  collaborative   partners  have  participated  or
participate in the early phases of the drug development process and have assumed
principal   responsibility   for  preclinical   testing,   clinical  trials  and
commercialization.  As part of these arrangements,  the Company's  collaborative
partners are required to provide the Company with  milestone  payments  upon the
occurrence  of  certain  events  and  royalties  tied to net  sales of any drugs
resulting  from  the  collaborations.  In  addition,  certain  of the  Company's
collaborative partners have provided the Company with

                                        4

<PAGE>



financial  support for research.  The Company has also licensed  certain  patent
rights to Glaxo.  Glaxo is conducting  the research and  development  activities
relating  to the  license  independently  of  Synaptic  and is  required  to pay
Synaptic  royalties  tied to net sales of any drugs  covered by the license.  By
pursuing the objective of  leveraging  resources  and  generating  royalty-based
revenues, Synaptic benefits from the expertise and resources of its partners and
other  licensees,   while  simultaneously  maintaining  relatively  low  capital
requirements.

         While  a  principal   objective  of  the  Company's  business  strategy
continues to be to leverage resources and generate  royalty-based  revenues, the
Company  believes  that  the  terms  attendant  to  future   collaborations  and
arrangements with pharmaceutical companies will be different in certain material
respects from the terms of its former and ongoing collaborations.  The Company's
first three  collaborations,  those with Lilly,  Merck and Novartis,  focused on
receptor  families  with  respect to which  there was,  at the time the  Company
entered into such collaborations,  a considerable amount of pharmacological data
suggesting  that the  members of such  families  were  involved  in a variety of
physiological   disorders  and  that  these  members  were,  as  a  consequence,
potentially valuable as drug targets. Each of Lilly, Merck and Novartis provided
the Company with research funding from the inception of its  collaboration  with
the Company. The Company's fourth collaboration, the one with Warner-Lambert, is
focused on a family of receptors with respect to which the pharmacological  data
suggesting a role for members of this family in physiological  disorders was, at
the outset of the collaboration, considerably more speculative. As a result, the
Company's agreement with Warner-Lambert  provides for a collaboration  conducted
in two stages.  In the first stage,  the  companies  engage in a joint  research
program designed to identify the role of members of the targeted receptor family
in a variety of  disorders.  During this  stage,  the  companies  fund their own
research efforts.  It is not until the second stage,  which will occur only if a
certain  amount of  scientific  progress  is made during the first  stage,  that
Warner-Lambert may become obligated to provide research funding to Synaptic.

         The Company  believes  that many,  if not most,  of the receptor  genes
discovered as a result of its nontargeted  genomics  approach will be members of
receptor  families  about which there is presently  little,  if any,  biological
information  suggesting  a role for such  receptors  in  specific  physiological
disorders.  As a consequence,  the Company does not believe that it will be able
to  exploit  most  of  these  gene   discoveries  in  the  near  future  through
collaborations  in which it receives  full  financial  support for its  research
efforts.  Accordingly,  the Company is seeking to license certain of the results
of its nontargeted approach to gene discovery to pharmaceutical companies. These
licensees  would then be responsible  for generating the biological  information
necessary for evaluating the licensed  discoveries as potential drug targets and
for any drug discovery and development efforts focused on these discoveries.  In
addition,  the  Company  intends  to  retain  certain  of its  nontargeted  gene
discoveries for internal evaluation and possible subsequent licensing.

         To Retain Ownership of Certain Products

         The Company's fourth objective is to retain ownership rights to certain
products developed through the use of its technology.  The Company is seeking to
achieve this objective in a variety of manners, including the exploration of and
entry into  collaborations  with  pharmaceutical  companies in which the Company
increases  its  participation  in and  funding  of drug  development  activities
conducted as part of such collaborations. Through such arrangements, the Company
believes  that it may be able to gain access to  additional  chemistry,  in vivo
pharmacology, preclinical and clinical expertise, as well as to retain a greater
portion   of   the   downstream   financial   benefits   associated   with   the
commercialization  of any products resulting from such arrangements.  In January
1998,  the Company  entered into a  collaboration  with  Grunenthal in which the
Company  participates  in  and  may  fund a  portion  of  the  drug  development
activities  conducted as part of the collaboration.  See "Grunenthal  Agreement"
under "Collaborative and Licensing Arrangements" below.

                                        5

<PAGE>



Background

         The Role of Receptors in Controlling Cellular Function

         The human body coordinates its activities through  communication  among
its  great  variety  of  cells  and  tissues.  One of  the  principal  means  of
communication  occurs  through  chemical  signaling,  when one cell  releases  a
chemical messenger, called a "ligand," which ultimately binds to and activates a
protein  molecule,  called a  "receptor,"  on the surface of another  cell.  The
activation  of the  receptor on the  surface of the  receiving  cell  triggers a
cascade of events in which the  message  received by the  receptor  is, in turn,
transmitted  to the  interior of the cell,  thereby  causing  some aspect of the
behavior of the receiving cell to change. The nature of this change depends upon
a number of factors,  including the specific ligand and receptor involved in the
communication.

         Many different  kinds of receptors  involved in cellular  communication
exist in the human body. Receptors are first classified into categories,  called
"superfamilies,"  based upon  similarities  in their  biochemical and structural
properties.  There are four principal superfamilies of receptors: the G protein-
coupled receptor superfamily,  the receptor protein-tyrosine kinase superfamily,
the  ligand-gated  ion  channel  superfamily  and  the  intracellular   receptor
superfamily.   The  receptors   included   within  each   superfamily  are  then
subcategorized  into groups,  called "families," based upon the specific ligands
with  which  they  interact.  Examples  of  receptor  families  within  the GPCR
superfamily  are the serotonin,  adrenergic,  neuropeptide Y ("NPY") and galanin
families  of  receptors.  Each  member  of each  family  is  called a  "receptor
subtype."

         Historically,  it was believed  that each family of receptors  had only
one or two members.  Scientists have discovered,  however, that many families of
receptors have more than two receptor subtypes.  The number of receptor subtypes
within  each  family  of  receptors  varies,  with  some  families,  such as the
serotonin  family,  comprising at least 14 known  receptor  subtypes,  and other
families,  such as the alpha  adrenergic  family,  comprising at least six known
receptor subtypes.

         In general, each receptor subtype is distributed differently throughout
the body and often  controls  physiological  functions  that are different  from
those  controlled  by  other  receptor  subtypes  within  the  same  family.  By
interacting  with all of its receptor  subtypes that are located  throughout the
body, a single ligand thus plays a role in numerous physiological functions. For
example, the ligand for adrenergic receptor subtypes,  noradrenaline (also known
as  norepinephrine),  interacts with at least nine different  receptor  subtypes
(six alpha and three  beta  receptor  subtypes),  one of which has been shown to
contract  the muscles  surrounding  the  prostate  and another of which has been
shown to regulate blood pressure.  In some cases,  the same receptor  subtype is
found in  different  tissues  of the human  body.  A compound  designed  to bind
selectively  to a receptor  subtype for treating a disorder in one tissue could,
therefore,  potentially  cause an  adverse  side  effect in other  tissues  that
contain the same  receptor  subtype.  The tissue  affected by the disorder  may,
however,  have  certain  other  characteristics  that can be  exploited to guide
receptor subtype-targeted compounds to that tissue.


         Receptor-Based Drug Therapy--The Traditional Approach

         Many  illnesses  arise  because  of   abnormalities   in  intercellular
communication,  and the concept of receptor-based  drug therapy was developed to
address  this  problem.  The goal of  receptor-based  drug therapy is to develop
drugs that will  interact with the receptor  believed to be associated  with the
targeted abnormality, thereby inhibiting or enhancing the cascade of events that
is  mediated  by the  receptor.  A number of  receptor-  based  drugs  have been
developed and are currently being marketed. In general,  however, these drugs do
not

                                        6

<PAGE>



differentiate  among receptor  subtypes and, while they may indeed interact with
the targeted receptor subtypes, thereby having some therapeutic effect, they may
also  interact  with  other  receptor  subtypes  within  the same  family as the
targeted receptor subtypes. These other receptor subtypes may be associated with
other physiological  functions,  and interactions of these drugs with them often
result in  undesirable  side  effects.  In  addition,  many of these  drugs have
limited  therapeutic  utility  because they must be used in suboptimal  doses in
order to minimize these side effects.

         The  reason  that  many  of  these  currently  available  drugs  do not
differentiate  among  receptor  subtypes  stems  from the fact  that  they  were
discovered through traditional drug discovery methods.  The traditional approach
to drug  discovery  involves the screening of compounds  against  animal tissues
containing  multiple  receptor  subtypes to determine their relevant  biological
activity.  This approach is limited in its ability to yield optimally  effective
drugs because of inherent limitations in the use of animal tissues to test drugs
intended for humans. First, by using animal tissues containing multiple receptor
subtypes,  it is usually  difficult  and often  impossible  both to measure with
precision the effect of a compound on the receptor subtype that is the target of
a drug  discovery  effort and to  determine  whether the  compound is binding to
other  receptor  subtypes in the tissue that are not the  intended  drug target.
Second, due to differences in the receptor systems of various species of animals
as compared to humans, there are often significant  differences between a drug's
activity in animals and the same drug's activity in humans.  In fact,  there are
several examples of drug development candidate failures in human clinical trials
that were due to differences  in the properties of such  candidates in humans as
compared to their  properties in the animal tissues that were initially used for
drug  discovery.  As a consequence,  compounds  initially  tested against animal
tissues  often  do not  have  the  desired  effects  when  they  are  ultimately
administered to humans in clinical trials.


Synaptic's Human Receptor-Targeted Drug Design Technology

         Synaptic  believes  that  its  human   receptor-targeted   drug  design
technology  can overcome the  limitations  of the  traditional  approach to drug
discovery.  This technology  involves three steps: (i) the discovery and cloning
of the human  genes  that code for  receptor  subtypes;  (ii) the use of each of
these  genes to create a cell line that can be used to  measure,  or assay,  the
pharmaceutical  properties  of  compounds  that  bind to the  targeted  receptor
subtype and that are, therefore,  candidates for drug development; and (iii) the
design,  synthesis and  optimization of compounds that are highly  selective for
the targeted human receptor subtype.  In the first step, the Company's molecular
biologists  employ genetic  engineering  techniques to clone the gene that codes
for the receptor  subtype of interest.  In the second step,  the Company's  cell
biologists  place the gene into a recipient  cell which then expresses the human
receptor  subtype on its surface.  This recipient cell, which expresses a single
population  of the targeted  human  receptor  subtype and is devoid of all other
related receptor subtypes,  is then propagated by the Company's cell biologists,
resulting in the establishment of a cell line.  Finally,  this cell line is used
as a  drug  discovery  system  by  the  Company's  pharmacologists  to  evaluate
compounds synthesized by the Company's or its collaborative  partners' chemists.
Since  each of these cell  lines  expresses  a single  receptor  subtype,  it is
possible to design  compounds  with high  affinity for the ultimate  target of a
drug discovery program--the appropriate human receptor subtype--and low affinity
for those subtypes suspected of being associated with side effects.

         The Company's  technology  makes it possible not only to clone receptor
subtypes  previously  believed or known to exist, but also to discover and clone
receptor  subtypes  which had  previously  been  undetectable  in animal tissues
because they were present in concentrations  too low to detect using traditional
pharmacological techniques. Many of these newly discovered receptor subtypes may
provide  opportunities  for the design of novel drugs. In addition,  the Company
believes that its ability to access and to use individual

                                        7

<PAGE>



cloned human  receptor  subtypes in its drug design efforts will yield safer and
more effective drugs than those currently  available.  Synaptic further believes
that its technology may make the drug  development  process more  predictive and
cost-effective  than  the  traditional  approach  because  the  Company  and its
collaborative   partners  and  other   licensees   can   eliminate  or  redesign
nonsubtype-selective  compounds  and  compounds  that  react  poorly  with human
targets at an early stage of the process  rather than at the costly later stages
of preclinical testing and clinical trials. Finally, drugs developed through the
use of the Company's  human  receptor-targeted  drug design  technology  will be
small molecule drugs which offer possibilities of avoiding  specialized delivery
approaches and which may be delivered orally.

         The Company also believes that its success in the discovery of receptor
subtypes  will enable it to further  refine the  understanding  of many  disease
processes.  There is  increasing  evidence to suggest  that some  disorders  may
actually involve the malfunctioning of any one of a variety of receptor subtypes
included  within  different  receptor  families.  For  example,  in the  case of
obesity,  there  are  pharmacological  data  indicating  that NPY,  galanin  and
serotonin  receptor  subtypes are  involved in  controlling  food  intake.  As a
result,  more than one drug could be developed to treat obesity,  but such drugs
would work through different biological mechanisms by exerting their therapeutic
effects by interacting with receptor subtypes  belonging to different  families.
The Company believes that its human receptor-targeted drug design technology may
make it possible  to  discover  two or more  separate  drugs that could  benefit
distinct  patient  populations  whose  symptoms  (for example,  obesity),  while
identical,  stem from different  physiological  disorders and therefore  require
different treatments. Consequently, the Company and its licensees have initiated
several  programs in which  different  receptor  subtypes are being used as drug
targets for the same therapeutic application.

         To date,  the Company has not  completed  development  of any drugs and
does not expect  that drugs  developed  by it or its  collaborative  partners or
other licensees will be commercially available for a number of years.


         Receptor Gene Discovery and Cloning

         The Company's  principal receptor cloning projects to date have focused
on four families of receptors within the G protein-coupled receptor superfamily:
the serotonin, alpha adrenergic,  NPY and galanin receptor families.  Additional
projects directed toward other receptor families are ongoing.

         The Company  employs a number of approaches to discover and clone genes
that code for GPCRs. Its principal approach, until recently, has been a targeted
genomics  approach.  This  approach  involves  two  steps.  First,  the  Company
identifies  families of receptors within the GPCR superfamily that are, based on
available  pharmacological  information  relating to these families suggesting a
potential  role  in  physiological  disorders,  of  particular  interest  to the
Company.  The Company then devises strategies to enable it to discover and clone
receptor  genes within the targeted  families.  After the Company  discovers and
clones two or more  members of a targeted  receptor  family,  its strategy is to
seek a  collaborative  partner  with which it can  attempt to design and develop
drugs that act at one or more of the cloned receptors.

         While the Company has been successful  employing this targeted genomics
approach,  as evidenced by collaborations with pharmaceutical  companies focused
on four different  families of GPCRs,  it has begun to shift the emphasis in its
gene  discovery  efforts from the targeted  genomics  approach to a  nontargeted
genomics  approach.  This shift stems from certain  developments in the field of
gene  discovery  over the past several  years.  First,  due in large part to the
successful  targeted  cloning  efforts of the  Company  and other  biotechnology
companies, pharmaceutical companies and academic institutions, many of the genes
that code for members

                                        8

<PAGE>



of GPCR  families for which there exists a body of  pharmacological  information
suggesting a role in physiological  disorders have now been cloned. As a result,
most of the genes that  remain to be cloned  are those that code for  members of
GPCR  families  for  which  there  may  be  little,   if  any,   pharmacological
information,  and those that code for receptors whose families have not yet been
identified and for which there is a lack of biological knowledge.  Second, there
has been a  tremendous  increase  in  interest  over the past  several  years in
determining  the sequence of the entire human genome.  This interest has spurred
significant  competition  and  technological  advances in the field of genomics.
Many of these  technological  advances involve a "nontargeted"  approach to gene
discovery  in that  they  facilitate  the  identification  of genes  from  large
collections  of  DNA  sequence  information  without,  in  the  first  instance,
requiring  the design and  implementation  of  strategies  aimed at cloning  the
members of specific receptor families.  While the nontargeted approaches to gene
discovery  often  yield genes  about  which  there is little,  if any,  existing
biological  knowledge,  they have  greatly  accelerated  the rate at which novel
genes are being discovered.  Given these developments and the fact that there is
a finite number of genes in the human genome, in an effort to remain competitive
in the field of gene  discovery,  the Company has begun to shift the emphasis in
its gene discovery  efforts from a targeted  genomics  approach to a nontargeted
genomics approach.

         The Company's nontargeted genomics approach involves the integration of
certain  proprietary  molecular biology technology of the Company with automated
gene sequencing  technologies and bioinformatics.  In formulating this approach,
the Company was intent upon addressing a problem commonly experienced by many in
industry and in academia who are employing  nontargeted genomics technologies to
identify  novel  genes.  The  problem  is one of  "redundancy."  Many  of  these
technologies  are  repeatedly  yielding  the same  sequences  of genes  that are
abundantly  expressed  in the tissues of  interest,  but are failing to identify
genes expressed at low levels. It is the Company's belief that many of the genes
that are expressed at low levels may be valuable targets for the design of novel
drugs.  Accordingly,  the molecular  biology  technology used by Synaptic in its
nontargeted  genomics  approach has been designed to facilitate the discovery of
novel genes by  significantly  reducing  the  redundancy  produced by many other
genomics  technologies.  This approach to gene discovery  yields for the Company
both genes that code for GPCRs,  which continue to be of primary interest to the
Company, and genes that code for other proteins,  which the Company believes may
be valuable targets for drug discovery.

         The Company's collection of cloned genes that code for receptors in the
GPCR  superfamily  comprises  human genes,  as well as genes from various  other
mammalian  species that  correspond  to the human genes.  These  receptor  genes
include genes that were discovered by the Company and genes that were discovered
by others about which information is publicly available. In general, the Company
seeks to patent those cloned  receptor  genes and those drug  discovery  systems
that it has  discovered  or invented.  As of February 15, 1999,  the Company had
received  United States  patents  relating to 13 receptor genes and related drug
discovery  systems.  In addition,  at that date,  several  United  States patent
applications  relating to the Company's  receptor gene discoveries were pending,
several  corresponding patents had been issued in other countries and additional
corresponding  patent applications had been filed in other countries.  There can
be no assurance  that the Company  will be awarded  patents in respect of any of
its pending patent applications or in respect of patent applications it may file
in the future.


         Drug Discovery Systems

         Once the Company clones the gene for a receptor subtype,  it places the
gene into a recipient  cell which then  expresses  the  receptor  subtype on its
surface.  This cell,  which expresses a single  population of the targeted human
receptor  subtype,  is then  propagated in the  laboratory by the Company's cell
biologists, resulting in the

                                        9

<PAGE>



establishment of a cell line. This cell line, which constitutes a drug discovery
system, is used in two different types of assays:  binding assays and functional
assays. In Synaptic's binding assays, the Company's  pharmacologists measure the
affinity of a compound  for both the  receptor  subtype  that is the target of a
particular drug discovery  program and the other receptor subtypes that could be
associated with side effects.  These measurements help to predict the potency of
a compound,  as well as the degree of selectivity  that the compound has for the
targeted receptor subtype over other receptor  subtypes.  The data obtained from
binding assays enable the chemists to design  compounds  toward or away from one
or more of the  relevant  subtypes,  as  appropriate,  for  optimal  therapeutic
efficacy.  In  Synaptic's  functional  assays,  the  Company's   pharmacologists
determine  the nature of the response of the receptor  subtype to the  compound.
Data from the  functional  assays show whether the compound is acting to inhibit
or enhance the  activity of the  receptor  subtype.  By enabling  the  Company's
pharmacologists  to evaluate  compounds rapidly at their ultimate human receptor
subtype targets, the Company's proprietary drug discovery systems serve as tools
that the  Company's and its  partners' or other  licensees'  chemists can use to
design drugs that will be more  effective and have fewer or  substantially  less
severe side effects than existing drugs.  Although the Company believes that its
drug  discovery  systems  accurately  measure  the  properties  of a  compound's
interaction with the human receptor subtypes, there are many additional factors,
such as the  drug's  stability  in the body or its  ability  to be  administered
orally,  that  impact the  ultimate  pharmaceutical  success of a  compound.  In
addition to using its binding and functional assays for the design of drugs that
act at  targeted  receptor  subtypes,  these  assays  are also used to  identify
ligands for receptor subtypes resulting from the Company's  nontargeted genomics
program.


         Chemistry and Molecular Pharmacology

         The Company  employs  two  approaches  to  designing  and  synthesizing
receptor  subtype-selective  compounds,  medicinal  chemistry and  combinatorial
chemistry,   both  of  which  are  supported  by  the  Company's   expertise  in
computer-assisted  molecular  modeling.  With  both  approaches,  the  Company's
chemists and  pharmacologists  use their  knowledge of the structures of ligands
and the targeted  receptor  subtypes to design and synthesize  initial  chemical
structures that will have activity at these subtypes.

         Combinatorial  chemistry involves  automated  synthesis of a variety of
novel  compounds by assembling  them using  different  combinations  of chemical
building blocks.  The use of  combinatorial  chemistry  greatly  accelerates the
process of generating  compounds.  The resulting  arrays of compounds are called
libraries  and  are  used  to  screen  for  compounds  ("lead  compounds")  that
demonstrate a sufficient level of activity at receptors of interest. The Company
is using combinatorial  chemistry to synthesize "focused" libraries of compounds
anticipated to be highly biased toward the Company's drug discovery targets. The
Company's scientists have successfully  generated lead compounds through the use
of these combinatorial chemistry techniques.

         Once  lead  compounds  are  identified,  whether  through  the  use  of
combinatorial  chemistry  or  traditional  medicinal  chemistry,  a  variety  of
analogues  are  prepared to  facilitate  an  understanding  of the  relationship
between chemical  structure and biological  activity.  These studies help define
structure  activity  relationships  which  can  then  be  used  to  design  drug
candidates with improved potency,  selectivity and  pharmacokinetic  properties.
Combinatorial  chemistry is used to rapidly generate a variety of structures for
lead optimization. Traditional medicinal chemistry, which involves the synthesis
of compounds one at a time, is also used for further  refinement and to generate
compounds not accessible by automated techniques.



                                       10

<PAGE>



Drug Discovery Programs: Focus on G Protein-Coupled Receptor Superfamily

         The  superfamily  of receptors to which the Company has chosen to apply
its human  receptor-targeted  drug design  technology  is the G  protein-coupled
receptor superfamily, so called because the cascade of events that ensues within
the receiving cell following the occurrence of the  ligand-receptor  interaction
is mediated by a class of proteins called "GTP-binding  regulatory proteins," or
"G proteins," found within the cell.

         The Company chose to focus on the GPCR superfamily  because it believes
that this superfamily  provides the optimum  opportunity for the exploitation of
its human  receptor-targeted  drug design technology.  First, it is known that G
protein-coupled  receptors play a major role in intercellular  communication and
that drugs that block  ("antagonists")  or enhance  ("agonists")  their activity
have therapeutic utility. Examples of such drugs include: Zantac(R), a histamine
receptor  antagonist  for the  treatment  of ulcers;  Claritin(R),  a  histamine
receptor  antagonist  for the  treatment of allergy;  Propulsid(R),  a serotonin
receptor agonist for the treatment of gastric motility disorder;  Imitrex(R),  a
serotonin  receptor  agonist  for  the  treatment  of  migraine  headache;   and
Hytrin(R),  an adrenergic  receptor antagonist for the treatment of hypertension
and urinary  retention  resulting  from benign  prostatic  hyperplasia  ("BPH").
Second,  there is a large body of knowledge  about some of the basic  structural
elements of drugs that interact with these receptors that has  accumulated  over
the years from which the Company and its  collaborative  partners and  licensees
can draw in beginning their drug discovery programs. Third, the GPCR superfamily
is extremely large and, based on several  estimates,  exceeds  several  thousand
receptor subtypes belonging to more than 40 known families and an unknown number
of additional families the ligands of which have not yet been identified.

         The Company's human  receptor-targeted  drug design technology is being
utilized  in a variety of  different  drug  discovery  programs:  by the Company
independently;  by the Company in joint research programs with its collaborative
partners;  by the Company's former  collaborative  partners pursuant to licenses
from the Company;  and by the Company's  other  licensees.  These drug discovery
programs are focused principally on human serotonin,  alpha adrenergic,  NPY and
galanin  receptor  subtypes.  The serotonin  programs are being conducted by the
Company in collaboration  with Lilly.  One of the alpha  adrenergic  programs is
being conducted by the Company's licensee and former collaborative partner Merck
and another of the alpha  adrenergic  programs is being conducted by the Company
in  collaboration  with  Grunenthal.  In  addition,  Glaxo has a license  to use
certain of the  Company's  alpha  adrenergic  technology  in its drug  discovery
efforts.  One of the NPY programs is being  conducted by the Company's  licensee
and former  collaborative  partner  Novartis  and another of the NPY programs is
being  conducted  by the Company  independently.  The  galanin  program is being
conducted by the Company in collaboration with Warner-Lambert.

         Total operating expenses incurred by the Company for each of the fiscal
years  1998,  1997 and  1996  were  $19,576,000,  $17,853,000  and  $14,319,000,
respectively,  of which  approximately  $7,182,000,  $9,785,000 and  $6,943,000,
respectively,  was funded by the Company's  collaborative  partners  during such
years.  In 1997,  the Company  increased its internal  research and  development
spending. The Company again increased internal research and development spending
during 1998, in part as a result of the expiration of the Novartis collaboration
and the termination of the associated research funding provided by Novartis. The
Company  intends to further  increase  its  internal  research  and  development
spending during 1999. The  anticipated  increase will be due in part to the July
31,  1999  expiration  of the Lilly  collaboration  and the  termination  of the
associated  research  funding  provided  by  Lilly  and the  February  28,  1999
expiration of the Merck  collaboration  and the  termination  of the  associated
research funding provided by Merck.

         Certain of the drug  discovery  programs in which the  Company's  human
receptor-targeted drug design technology is being utilized are summarized in the
following table:

                                       11

<PAGE>
<TABLE>
<S>              <C>               <C>                    <C>                   <C>            <C>


                             Summary of Certain Drug Discovery Programs
- ------------------------------------------------------------------------------------------------------------
                                                                                Collaborative
Program(1)       Receptor(s)       Primary Indication(s)  Status(2)             Partner        Licensee
- ------------------------------------------------------------------------------------------------------------
Serotonin        1F                Acute Migraine         Early Preclinical(3)  Eli Lilly
                 __(4)             Depression             Phase I Clinical      Eli Lilly
                 __(4)(5)          Depression             Late Preclinical      Eli Lilly
                 __(4)(5)          Depression             Late Preclinical      Eli Lilly
                 1A                Smoking Cessation      Late Preclinical(6)   Eli Lilly
                 2C                Obesity                Early Preclinical     Eli Lilly

Alpha
 Adrenergic      1a                Benign Prostatic
                                    Hyperplasia           Phase II Clinical                    Merck
                 2a, 2b or 2c(4)   Pain                   Leads Identified      Grunenthal
                 1a, 1b or 1d      (7)                    (7)                                  Glaxo

Neuropeptide Y   Y5                Obesity                Early Preclinical                    Novartis
                 Y2                Pain                   Discovery             (8)

Galanin          1, 2, and 3       Obesity, Diabetes,     Leads Identified      Warner-
                                   Alzheimer's Disease,                         Lambert
                                   Depression and Pain

</TABLE>


(1)      The Company's  technology is being utilized by certain of the Company's
         collaborative   partners  and/or  other  licensees  in  drug  discovery
         programs in addition to those  programs  referenced in the above table.
         In  general,   the  drug  discovery   programs  that  are  specifically
         referenced  in  the  above  table  are  at  more  advanced   stages  of
         development  than those  that are not  specifically  referenced  in the
         table.

(2)      "Discovery"  refers to the stage at which  chemists are  attempting  to
         identify  receptor  subtype-selective  compounds through the use of the
         Company's drug discovery systems.

         "Leads   Identified"   refers   to  the   stage   at   which   receptor
         subtype-selective compounds have been identified through the use of the
         Company's drug discovery systems.

         "Early Preclinical" refers to the stage at which one or more leads have
         been  identified  and are  being  tested  in in vitro or in vivo  model
         systems for one or more  indications.  In addition,  at this stage lead
         compounds  may have been shown to be active in animal models for one or
         more  indications  and  preliminary   toxicology  and  pharmacokinetics
         studies may also have been concluded.

         "Late  Preclinical"  refers to the stage preceding the Phase I Clinical
         stage at which a drug  candidate  has been  selected,  scale-up of such
         candidate is underway or completed, and toxicology and pharmacokinetics
         studies are planned or underway or have been concluded.

         "Phase I Clinical"  refers to the stage preceding the Phase II Clinical
         stage at which a drug candidate is being or has been  administered to a
         small group of healthy  human  subjects  for the purpose of testing for
         safety (adverse effects), dose tolerance, absorption, bio-distribution,
         metabolism, excretion and clinical pharmacology.

         "Phase II Clinical"  refers to the stage  following  completion  of the
         Phase I Clinical  stage at which (i) a drug  candidate  is being or has
         been  administered  to a small  sample of the actual  intended  patient
         population to seek to assess the efficacy of the drug candidate for the
         specific  targeted  indication,  to determine  dose  tolerance  and the
         optimal  dose range and to gather  additional  information  relating to
         safety and potential  adverse  effects or (ii) a compound  which is not
         necessarily  a drug  candidate  due to certain  of its  pharmacokinetic
         properties  nevertheless  is being or has been  administered to a small
         sample of the actual intended patient  population to seek to assess the
         efficacy  of  the  compound  for  the  specific  targeted   therapeutic
         indication.  In the "proof of concept"  case  described in clause (ii),
         the  objective is to assess,  prior to the  expenditure  of  additional
         resources, the correctness of the hypothesis that a certain

                                       12

<PAGE>



         receptor  subtype can  be manipulated  in a therapeutically  beneficial
         manner for the treatment of the disorder of interest.

         "Phase III Clinical"  refers to the stage at which a drug  candidate is
         being or has been  administered  to a  broader  sample  of the  general
         patient population to establish further clinical safety and efficacy of
         the drug candidate in order to determine its overall risk-benefit ratio
         and to provide an adequate basis for all package labeling.

(3)      In  August  1998, the  Company and  Lilly  announced  that LY334370,  a
         selective serotonin 1F receptor agonist (SSOFRA),  would advance to the
         Phase III Clinical stage.  The Phase III Clinical trials were scheduled
         to  commence in March  1999.  However,  in March,  Lilly  informed  the
         Company that it was discontinuing commercial development of LY334370 as
         a result of its recent review of data from an animal  toxicology study.
         Lilly  continues to maintain  that all data to date continue to support
         the hypothesis that SSOFRAs represent a new class of compounds that may
         effectively  treat  migraine pain via neuronal  mechanisms  without the
         cardiovascular  side effects  associated with products currently on the
         market,  and has informed the Company that it will continue its efforts
         to develop alternative SSOFRAs with an improved safety profile.

(4)      The  specific  receptor  subtype  that  is the focus of this program is
         confidential to the Company and its   collaborative  partner  or  other
         licensee.

(5)      The serotonin  receptor  subtype which is the target of this program is
         different  from the serotonin  receptor  subtype which is the target of
         the  depression  program  that is in the Phase I Clinical  stage and is
         different  from the serotonin  receptor  subtype which is the target of
         the other  depression  program that is in the Late  Preclinical  stage.
         Accordingly, the compound which is the focus of this depression program
         is not a back-up to the compound  which is the focus of the  depression
         program that is in the Phase I Clinical  stage or which is the focus of
         the other depression program that is in the Late Preclinical stage.

(6)      During the third  quarter of 1998,  Lilly  informed the Company that it
         would not  continue to develop this  compound but would  instead seek a
         development  partner or licensee for the compound  that is the focus of
         this program.

(7)      The therapeutic indications that are the focus of Glaxo's  program  and
         the status of such program are not known by the Company.

(8)      While  Synaptic is currently  conducting  this  program  independently,
         Synaptic  has agreed to reserve the Y2  receptor as a potential  target
         for drugs for the alleviation of pain exclusively for its collaboration
         with Grunenthal.


                                       13

<PAGE>



Serotonin Programs

         Serotonin is one of the major  neurotransmitters,  a type of ligand, of
the  body.  It  affects  mood,  sleep  rhythms,   sexual  functions,   appetite,
temperature   control,   gastro-intestinal   movement  and  the  cardiovascular,
pulmonary and genito-urinary  systems. Drugs that inhibit or enhance the actions
of  serotonin  have  proven  to be  effective  in the  treatment  of an array of
disorders,  such as migraine headache,  depression and anxiety. However, many of
the  serotonergic  drugs  currently  available were designed  without the use of
cloned   serotonin   receptor  subtype  genes  and  some  of  these  drugs  have
unacceptable side effect profiles.  It is generally  believed that the poor side
effect profiles stem from the interaction of these drugs with multiple serotonin
receptor subtypes. The serotonin family is extremely large,  comprising at least
14 receptor subtypes. While each of these receptor subtypes may be implicated in
a physiological  function distinct from the other subtypes,  all of the receptor
subtypes  respond to the  neurotransmitter  serotonin--and  may be responding to
nonsubtype-  selective  drugs.  As a consequence,  a  nonsubtype-selective  drug
intended to exert its effects on one physiological function may in fact have the
unintended consequence of exerting its effects on other physiological functions,
thereby causing the undesirable side effects.

         Of the 14 serotonin  receptor  subtype genes that have been  discovered
and cloned,  the Company  believes that it is responsible  for the discovery and
cloning of seven. The Company has been issued United States patents covering six
of these receptor genes and related drug discovery systems. A patent application
covering  the seventh of these genes and the related drug  discovery  system and
additional patent applications relating to all of these genes have been filed in
the United States. In addition,  several  corresponding patent applications have
been filed in other countries.  The Company has found,  through the use of these
cloned  receptor  genes and related drug discovery  systems,  that the serotonin
system is  significantly  more complex than had previously  been  understood and
believes  that  the  use  of  its  technology  to  design   serotonin   receptor
subtype-selective  drugs will  result in new  serotonergic  drugs with  improved
efficacy  and  side  effect  profiles,  as well as  serotonergic  drugs  for new
therapeutic applications.  There can be no assurance,  however, that the Company
will be successful in designing a serotonin receptor subtype-selective drug that
will achieve the foregoing desired effect.

         Pursuant to an exclusive license from the Company,  Lilly has the right
to use all but two of the Company's  existing  serotonin drug discovery  systems
for the  development  and  commercialization  of  serotonergic  drugs.  Lilly is
currently  conducting drug discovery  programs  focused on a number of serotonin
receptor   subtypes   and   therapeutic   applications.    To   date,   receptor
subtype-selective  compounds  have been  identified  for a number  of  serotonin
programs. Certain of the serotonin programs are described below.


         Migraine Headache

         Migraine headaches are periodic  throbbing  headaches often accompanied
by nausea and  vomiting.  During the past six to seven years,  several new drugs
have become  available  for the  treatment  of  migraine.  These  drugs  include
Imitrex(R),  Zomig(R), Amerge(R) and Maxalt(R). All of these agents are agonists
at certain serotonin  receptor  subtypes.  Although  effective in most patients,
these drugs have been  associated  with the  tightening  of the  coronary  blood
vessels, or vasoconstriction.  As a result, these drugs are contraindicated both
in  patients  with  ischemic  heart  disease and in  patients  with  symptoms of
ischemic heart disease. In addition,  because of the cardiovascular risks, it is
recommended  that,  in the case of any  patient  in whom  unrecognized  coronary
disease is comparatively  likely,  the first dose of these drugs be administered
in a physician's office or a similarly medically staffed and equipped facility.

         As part of their collaboration,  the Company and Lilly had engaged in a
drug  discovery  program to identify and develop  anti-migraine  compounds  with
increased efficacy and reduced side effects. Through the

                                       14

<PAGE>



use of the Company's serotonin receptor subtype drug discovery systems, Synaptic
scientists  discovered  that  Imitrex(R)  reacted  strongly with three serotonin
receptor  subtypes,  serotonin  1B and 1D, both of which were long thought to be
the targets for  anti-migraine  effects,  as well as serotonin 1F.  Zomig(R) and
Amerge(R) also react  strongly with  serotonin 1B, 1D and 1F receptor  subtypes.
Maxalt(R)  reacts  strongly  with  serotonin  1B and 1D receptor  subtypes,  but
somewhat  less  potently  with  the  serotonin  1F  receptor  subtype.  Synaptic
scientists  proposed  that agents which  interact with the serotonin 1F receptor
subtype  would  be  effective  in  the  treatment  of  migraine.  Together  with
scientists at Lilly, Synaptic scientists identified compounds that are selective
agonists of the serotonin 1F receptor  subtype.  These  compounds were tested in
animal models at Lilly and shown to be orally active and to have a long duration
of action. The compounds were also shown to be potent in an animal model that is
thought by many scientists in the field to be predictive of therapeutic  utility
for the treatment of migraine.  Furthermore,  these  compounds  were inactive in
vasoconstriction  assays at Lilly, thereby suggesting that the contraindications
relating to  cardiovascular  problems  included in the labeling for  Imitrex(R),
Zomig(R),  Amerge(R)  and Maxalt(R)  would not be  applicable to a  1F-selective
agonist for the treatment of migraine.

         One  of  these  selective  serotonin  1F  receptor  agonists  (SSOFRAs)
identified  as part of the  collaboration,  LY334370,  was selected by Lilly for
clinical  trials.  In 1998,  Lilly completed three Phase II clinical trials with
LY334370 and informed the Company that the data from these trials indicated that
LY334370 is efficacious in the treatment of migraine without the  cardiovascular
side effects associated with other migraine treatments  currently on the market.
In August 1998, the Company and Lilly announced that this compound would advance
to the Phase III clinical stage. The Phase III clinical trials were scheduled to
commence in March 1999.  However,  in March,  Lilly informed the Company that it
was discontinuing  commercial  development of LY334370 as a result of its recent
review of data from an animal toxicology study. Lilly continues to maintain that
all data to date continue to support the hypothesis that SSOFRAs represent a new
class of  compounds  that  may  effectively  treat  migraine  pain via  neuronal
mechanisms  without the  cardiovascular  side effects  associated  with products
currently on the market,  and has informed the Company that it will continue its
efforts to develop alternative  SSOFRAs with an improved safety profile.  Due to
the discontinuation of commercial development of LY334370, the program is in the
early preclinical stage.

         Synaptic  has been issued a United  States  patent  covering the use of
genetically  engineered cells expressing the human serotonin 1F receptor subtype
to identify  compounds  that bind to the receptor  subtype,  as well as a United
States  patent  covering the gene  encoding the receptor  subtype.  In addition,
Lilly has been issued a United  States  patent  covering  the use of 1F agonists
exhibiting minimal vasoconstrictive effects for the treatment of migraine.


         Smoking Cessation

         There are more than 150 million smokers in major market countries, more
than 30  million  of whom  attempt  each year to quit  smoking.  Chronic  use of
tobacco is causally linked to a variety of serious diseases,  including coronary
heart disease, cancer and emphysema. Nicotine patches, gum and nasal sprays have
been  used as  smoking  cessation  aids,  but  have met  with  limited  success.
Recently,  Wellbutrin(R),  which has been  available for a number of years as an
antidepressant,  was approved by the United States Food and Drug  Administration
(the "FDA") for marketing in a sustained release formulation  (Zyban(R)) for use
as an aid to smoking  cessation.  Clinical  studies show that  Zyban(R),  either
alone or in combination with transdermal nicotine, increases the rate of smoking
cessation. However, the long-term response rate to Zyban(R) as an aid in smoking
cessation is low (about 20%). In addition, the active ingredient in Zyban(R) has
been reported to cause seizures in about 0.4% of patients,  along with dizziness
and insomnia.

                                       15

<PAGE>

         As part of a program to identify and develop  serotonin 1A  antagonists
which ameliorate the withdrawal  symptoms frequently suffered in connection with
smoking  cessation,  the Company and Lilly  designed novel  compounds  which are
highly  selective  for and are potent  antagonists  of the serotonin 1A receptor
subtype.  These  compounds have been shown to be effective in an animal model of
nicotine  withdrawal  and may lead to drugs which are more  effective as smoking
cessation  aids  than those currently  available.  Lilly has  informed  Synaptic
that it intends to seek a  development partner or licensee for the compound that
is the focus of this program.


         Obesity

         Drug  treatment  for  obesity  has  traditionally  been  used to reduce
appetite as a short-term  adjunct to diet and exercise.  Most drugs approved for
the  treatment  of  obesity  act  centrally  through   catecholaminergic  and/or
serotonergic   pathways.   Earlier   compounds,   such  as   Benzedrine(R)   and
Dexedrine(R),  were plagued by problems of tolerance,  abuse and  cardiovascular
side  effects.  More  recently,  Pondimin(R)  and  Redux(R),  which  release the
neurotransmitter  serotonin,  were widely used,  either alone or in  combination
with phentermine  (Phen-Fen).  However,  both of these drugs have been withdrawn
from the market  pursuant to a request by the FDA  because  they appear to cause
heart  valve  defects  and  pulmonary  hypertension.   The  mechanism  by  which
Pondimin(R)  and Redux(R) cause this cardiac and pulmonary  toxicity is unknown,
but  similar  toxicity  is not  seen  with  other  serotonergic  drugs,  such as
Prozac(R) and Zoloft(R), which are widely used as antidepressants.

         In 1997,  Meridia(R)  was  approved  by the FDA for the  management  of
obesity,  including  weight loss and  maintenance of weight loss. This compound,
which  acts by  inhibiting  the uptake of the  neurotransmitters  norepinephrine
(noradrenaline) and dopamine,  as well as the  neurotransmitter  serotonin,  has
been shown to produce  long-term  (12-month)  weight loss.  However,  Meridia(R)
substantially  increases blood pressure in some patients.  Accordingly,  regular
monitoring of blood pressure is required in patients receiving Meridia(R).

         While it has been proven that  serotonergic  transmission  can regulate
food intake,  it has not been clear which of the serotonin  receptor subtypes is
responsible for this action.  Studies involving  genetically  altered mice which
lack serotonin 2C receptors  indicate that this serotonin  receptor  subtype may
play a role.  These mice are normal at birth but become obese as they get older,
and their obesity is associated with increases in food intake levels and insulin
resistance. A possible correlation in humans is provided by the observation that
patients treated with drugs such as clozapine,  imipramine,  and  amitriptyline,
all of which have, in addition to their principal actions,  substantial blockade
of the serotonin 2C receptors, are associated with weight gain.

         As part of their collaboration,  the Company and Lilly are engaged in a
drug discovery program to identify and develop compounds which are selective for
the serotonin 2C receptor  over other  serotonin  receptor  subtypes that may be
responsible  for  undesirable  side effects.  The Company's  serotonin  receptor
subtype   drug   discovery   systems   have  made  it   possible   to   discover
subtype-selective compounds that may be effective treatments for obesity through
this  serotonin 2C mechanism.  Subtype-selective  compounds  which suppress food
intake in animal  models were  identified  by Lilly and  Synaptic  and Lilly has
confirmed  that  it  is  continuing  to  evaluate  these   compounds  for  their
suitability as drug candidates.

         Depression

         A number of different  pharmacologic  strategies have been developed to
treat  depression.  The early drugs shown to be  effective  in the  treatment of
depression,  such as the  tricyclic  antidepressants,  lithium and the monoamine
oxidase inhibitors, have side effects associated with their use that limit their
effectiveness.   Selective  serotonin  reuptake  inhibitors  (SSRIs),   such  as
Prozac(R),  Zoloft(R),  Paxil(R)  and  Celexa(R),  have been

                                       16

<PAGE>


shown to be highly  effective in the  treatment of many forms of  depression.  A
number of SSRI  compounds are now approved for  marketing,  and these drugs have
captured a significant market share.  However,  all of these currently available
drugs have  deleterious side effects in many patients which may limit their use.
In  addition,  these  drugs have a lag time  before  their  beneficial  clinical
effects can be seen. This lag time can be a serious  problem,  especially in the
depressed  suicidal  patient.  Furthermore,  there are a  significant  number of
patients who do not  adequately  respond to any of the currently  available drug
therapies.

         As part of their  collaboration,  the Company and Lilly have engaged in
several  distinct  programs  focused on the  identification  and  development of
serotonergic drugs for the treatment of depression. The programs are distinct in
that  they  target  different  serotonin  receptor  subtypes.  In each of  these
programs,  scientists at Synaptic and Lilly identified novel serotonin  receptor
subtype-selective  compounds  that  may have  rapid  onset  of  efficacy  in the
treatment of depression and that may also have better side effect  profiles than
drugs  currently  available.  Lilly has confirmed that it is conducting  Phase I
clinical  trials in Europe  with a compound  identified  as part of one of these
programs,  and has selected two other compounds  identified as part of the other
depression  programs  for  possible  development.   These  other  compounds  are
undergoing late preclinical testing.


         Other Serotonin Programs

         The Company has cloned additional  serotonin receptor subtypes that are
either not  currently  being  pursued  by Lilly as drug  targets or are being so
pursued  but  are  focused  on  therapeutic  applications  which  are  currently
confidential to the Company and Lilly. In addition, there is evidence to suggest
that one or more  serotonin  receptor  subtypes that are the targets of the drug
discovery programs currently being conducted by Lilly may be relevant as targets
for  other  therapeutic  applications.   Lilly  may  establish  additional  drug
discovery programs focused on certain of these other serotonin receptor subtypes
or therapeutic  applications in the future. There can be no assurance,  however,
that Lilly will establish additional drug discovery programs. Subject to certain
limited  exceptions,  Lilly will be obligated to pay the Company  milestones and
royalties  in respect of sales of any drugs  developed  by it through the use of
the  Company's  serotonin  technology  as part of these  existing or future drug
discovery programs.


Alpha Adrenergic Programs

         Alpha  adrenergic  receptors  are  activated  by  the  neurotransmitter
norepinephrine (noradrenaline).  The alpha adrenergic receptors serve a critical
control  function in regulating  involuntary  physiological  functions,  such as
blood  pressure,  heart  rate and  smooth  muscle  tone,  and thus may  serve as
important tools in the management of many disorders.

         Until 1982, only two alpha adrenergic  receptors  (alpha-1 and alpha-2)
were believed to exist.  Since then,  scientists  have discovered that the alpha
adrenergic  receptor family contains at least six subtypes (alpha- 1a, 1b and 1d
and  alpha-2a,  2b and 2c).  The  Company  believes it was  responsible  for the
discovery  of the  genes  that  code for the human  alpha-1a,  -1b,  -1d and -2b
receptors and has received  United States patents  relating to all four of these
genes  and  related  drug  discovery  systems.  Additional  patent  applications
relating to certain of these genes have been filed both in the United States and
in other countries.

         There are a number of  adrenergic  drugs on the market  today which are
effective in the  treatment of a variety of  disorders.  However,  most of these
drugs were  discovered  in the 1970's  prior to the  discovery  of the six alpha
adrenergic  subtypes  and  are not  selective  for  any  one of  these  receptor
subtypes.  The Company  believes that many of the side effects  associated  with
these drugs may be traced to a lack of selectivity for the

                                       17

<PAGE>



appropriate  receptor  subtypes.  The Company's alpha  adrenergic drug discovery
systems  are being used in multiple  drug  discovery  programs.  There can be no
assurance that the Company or any  collaborative  partner or other licensee will
be successful in designing an alpha adrenergic receptor  subtype-selective  drug
with improved efficacy and an improved side effect profile.

         Pursuant  to a license  granted by the Company in  connection  with the
establishment  of its  collaboration  with Merck,  Merck is conducting  Phase II
clinical  trials  with  an  alpha-1a  antagonist   identified  as  part  of  the
collaboration for the treatment of BPH. In addition,  the Company and Grunenthal
are collaborating to develop alpha-2 adrenergic  agonists for the alleviation of
pain. These programs are described below.


         Benign Prostatic Hyperplasia

         BPH is a pathology of the prostate,  a  walnut-sized  gland in men that
surrounds the urethra as it exits the bladder. As men age, cells in the prostate
proliferate,  causing  growth in the  prostatic  tissue which in turn results in
pressure on the  urethra.  Common  symptoms of BPH  include  urinary  retention,
hesitancy or difficulty  initiating the stream of urine,  urinary  frequency,  a
sense of urgency and a sensation  of  incomplete  emptying of the  bladder.  The
incomplete  emptying of the bladder caused by BPH can also lead to urinary tract
infections  and bladder  damage.  In severe cases,  the flow of urine can become
completely blocked and lead to kidney failure.

         There are several treatment  options  available for BPH.  Transurethral
resection of the prostate (TURP) is performed in an estimated 130,000 to 250,000
men  in  the  United  States  annually.   This  surgical  procedure  results  in
significant  benefit.  However,  as a major surgical procedure which carries the
potential for adverse  consequences  and  complications  and generally  requires
hospitalization  and  the use of  general  anesthesia,  TURP is an  unattractive
alternative for many patients, and is not recommended for elderly patients. As a
result,  a number of additional  procedures  have been  developed  over the past
decade to treat BPH. These include various  microwave  procedures (in which heat
is used to damage or destroy excess tissue),  transurethral  needle ablation (in
which  excess  tissue  is  destroyed  using  radiowaves),  and a number of laser
treatments involving a variety of techniques, generators and fibers. These newer
procedures  are generally  less  invasive than TURP. In addition,  many of these
newer  procedures  can  be  performed  on  an  out-patient   basis  under  local
anesthesia.  Patient satisfaction with these newer procedures is generally good,
and  adverse  event  rates tend to be lower than those seen with TURP.  However,
these alternative  procedures tend to produce less improvement in symptom scores
and urinary flow rates than TURP. In addition,  since these procedures have been
developed only relatively  recently,  the long-term response rates compared with
those of TURP are unclear.

         Two different pharmacological  alternatives for the treatment of BPH in
patients  who either are not  candidates  for or elect not to have  surgery  are
currently  available.  The  first  alternative  is a type of drug  that  acts by
inhibiting the enzyme 5 alpha reductase, which is responsible for the conversion
of testosterone to  dihydrotestosterone  in the prostate.  By reducing levels of
dihydrotestosterone, which plays a role in growth of prostatic tissue, this type
of drug is  intended  to shrink  the  gland.  An example of this type of drug is
Proscar(R).  Although there is a rapid  regression of the enlarged gland in most
patients,  less than 50% of  patients  experience  an increase in urine flow and
improvement of symptoms when treated with Proscar(R) for 12 months. A minimum of
six months'  treatment may be necessary to determine  whether an individual will
respond to the drug.

         The second type of drug for the  treatment  of BPH  involves the use of
alpha-1 adrenergic  antagonists,  such as Hytrin(R) and Cardura(R),  that act by
blocking alpha adrenergic  stimulation of the prostate.  This blocking  activity
causes a  relaxation  of the  musculature  of the  prostate,  thereby  improving
urinary flow and providing other symptomatic  relief of BPH. Alpha-1  adrenergic
antagonists were initially developed as antihypertensive

                                       18

<PAGE>


agents  in the  mid-1970's  prior to the  discovery  that  there  existed  three
distinct  subtypes  of the  alpha-1  receptor,  and  are not  selective  for any
particular alpha-1 subtype. Recently,  another alpha antagonist,  Flomax(R), was
approved  for  use  in  the  treatment  of  BPH.  Flomax(R)  is  claimed  to  be
"uroselective,"  in that it shows some limited (three to four-fold)  selectivity
for the  alpha-1a  receptor,  which is  predominant  in the  prostate,  over the
alpha-1b and the alpha-1d receptor  subtypes.  Rapid symptomatic  improvement in
approximately  65% to 85% of patients  treated with  Hytrin(R),  Cardura(R)  and
Flomax(R) has been observed.  However,  dose-dependent  side effects,  including
hypotension (which can cause dizziness),  headache,  weakness,  nasal congestion
and peripheral  edema,  are associated with the use of Hytrin(R) and Cardura(R).
The  side  effects  limit  the  recommended  dose  for  these  drugs.  The  most
significant  side effect,  hypotension,  is particularly  detrimental to elderly
patients.  Experience to date suggests that  Flomax(R) may be associated  with a
reduced  risk  of  cardiovascular   adverse  events  than  either  Hytrin(R)  or
Cardura(R).  However, somnolence and respiratory adverse events are also seen in
Flomax(R) patients.  In addition,  Flomax(R) is associated with a high incidence
of abnormal ejaculation.

         Through the use of its alpha  adrenergic drug discovery  systems and by
means of in vivo studies,  Synaptic  discovered that different receptor subtypes
are  involved in the control of prostate  musculature  and blood  pressure:  the
alpha-1a receptor subtype is responsible for contraction of prostate musculature
and other  alpha-1  receptor  subtypes are involved in the  regulation  of blood
pressure.  This discovery  confirmed the Company's  hypothesis  that many of the
side effects caused by nonselective  alpha-1  adrenergic  antagonists  that were
available  for the treatment of BPH stemmed from their lack of  selectivity  for
the receptor subtype involved in relaxation of prostate musculature. The Company
has been issued United States patents  covering the use of alpha-1a  antagonists
having defined degrees of selectivity for the alpha-1a receptor subtype relative
to one or both of the other alpha-1  receptor  subtypes for the treatment of BPH
(the "BPH use patents").  In addition,  Synaptic has been issued a United States
patent  covering the use of genetically  engineered  cells  expressing the human
alpha-1a  adrenergic  receptor  subtype to identify  compounds  that bind to the
receptor  subtype,  as well as a United States patent covering the gene encoding
the receptor subtype.

         The Company,  in  collaboration  with Merck,  used the  Company's  drug
discovery  systems to design  compounds  that block the activity of the alpha-1a
receptor  subtype,  thereby  producing the desired effects on the prostate,  but
that have minimal affinity for alpha-1b and alpha-1d receptor subtypes,  thereby
substantially  reducing the cardiovascular effects seen with currently available
nonselective  alpha-1  adrenergic  antagonists.  A compound selected by Merck is
currently in Phase II clinical trials. Other leads have also been identified and
are in the early preclinical stage of testing.

         Under  the  terms of the  Merck  Agreement,  Synaptic  granted  Merck a
nonexclusive worldwide license under certain of its patent rights, including the
Company's alpha adrenergic receptor patents and patent applications,  to develop
and commercialize alpha-1a antagonists.  In addition,  Synaptic granted Merck an
exclusive  worldwide license to use Synaptic's  alpha-1a selective compounds and
know-how,  as  well as an  exclusive  worldwide  license  under  certain  of the
Company's  patent  rights,  including  the BPH use patents  and  related  patent
applications,  for the same purpose.  However, in March 1998, Merck granted back
to Synaptic such rights as were  necessary to enable  Synaptic to grant to Glaxo
pursuant to the Glaxo  Agreement a limited license under the BPH use patents and
an option to obtain an additional license under the BPH use patents.


         Pain

         Analgesic  agents are used to relieve  pain.  Analgesics  most commonly
used for severe pain are narcotics.  Although very effective, narcotic analgesic
agents carry the risk of depressing respiration and causing nausea, vomiting and
constipation,  and their repeated use may lead to addiction. It is believed that
nonnarcotic analgesics would be beneficial to many patient populations suffering
from severe pain.
                                       19

<PAGE>

         Alpha-2  agonists  have been broadly  used and are highly  effective as
veterinary  analgesics.  Animal  data  indicate  that these  agents do not cause
respiratory  depression.   In  addition,  their  action  can  be  reversed  with
appropriate  drugs.  However,  they cause both  sedation  and  hypotension  when
administered within the analgesic dose range.

         Synaptic  believes that its drug discovery  systems for the three human
alpha-2 adrenergic  receptor subtypes can be used to discover alpha-2 analgesics
which have significantly fewer deleterious side effects than currently available
analgesics and the effects of which may be rapidly  reversed.  Synaptic chemists
have synthesized a broad array of alpha-2 agonists which are the focus of a drug
discovery  program  being  conducted  by  the  Company  in  collaboration   with
Grunenthal.  The two companies are in the process of assessing  these  compounds
and will select those  compounds  which satisfy the design  criteria for further
optimization and testing.


Neuropeptide Y Programs

         Neuropeptides are neurotransmitters.  Unlike neurotransmitters that are
small molecules,  such as norepinephrine  and serotonin,  neuropeptides are much
larger molecules. The mode of action of neuropeptides,  however,  resembles that
of  small  molecule  neurotransmitters  in that  they  function  by  means of an
interaction with specific families of receptors, including families within the G
protein-coupled   receptor   superfamily.    Although   current   knowledge   of
neuropeptides and their receptors is significantly less extensive than knowledge
of small  molecule  neurotransmitters  and their  receptors,  subtypes have been
shown to exist for several families of neuropeptide receptors.

         One focus of the Company in its receptor and drug discovery  efforts in
this area has been on the NPY family of receptors.  Although the natural  ligand
for this  family,  NPY,  is a large  molecule,  the goal of this drug  discovery
program  is,  as is  the  case  in all of the  Company's  other  drug  discovery
programs, to design a small molecule drug. Large peptide-like  molecules are not
stable in the body and thus would have short  durations  of action and would not
be orally  available,  thus requiring  delivery by injection.  To date, there is
evidence for the  existence  in humans of at least five NPY  receptor  subtypes,
named Y1, Y2, Y3, Y4 and Y5. However, the discovery and cloning of the genes for
only four of these  subtypes have been  reported.  In 1996 and 1997, the Company
was awarded  United States  patents  covering the genes that code for the Y2, Y4
and Y5 receptor subtypes and related drug discovery systems.  Synaptic has filed
additional  patent  applications  relating  to these  discoveries  in the United
States and in other countries.

         A drug discovery program in which the Company's NPY technology is being
utilized  is being  conducted  by the  Company's  former  collaborative  partner
Novartis pursuant to a license from the Company.  This program is focused on the
development  of NPY receptor  subtype-selective  compounds  for the treatment of
obesity.  Another NPY drug discovery  program  currently  being conducted by the
Company  focused on pain is  contractually  reserved  for and may become a joint
program as part of the Company's collaboration with Grunenthal.  There can be no
assurance  that the NPY drug  discovery  program  focused on pain will  become a
joint program as part of the Grunenthal collaboration or that the Company or any
collaborative partner or other licensee will be successful in designing safe and
effective NPY receptor subtype-selective drugs.


         Obesity

         Animal  studies  have shown that NPY is the most potent  stimulator  of
food intake  identified  to date.  As little as one  billionth  of a gram of NPY
injected  directly  into  the  hypothalamus,  a key  brain  area  that

                                       20
<PAGE>


controls  appetite,   causes  well-fed,   satiated  rats  to  overeat.  Repeated
administration of NPY causes continual overeating and obesity.

         A Y5 receptor was initially  isolated by the Company's  scientists from
rat hypothalamus.  In laboratory tests, the activity of NPY and related peptides
on the Y5 receptor  correlates  with the ability of these  peptides to stimulate
feeding in animals. As part of its collaboration with the Company, Novartis then
showed that several peptides that activated the Y5 receptor  preferentially over
other known NPY receptors  increased food intake in rats.  Additional studies by
Synaptic and Novartis showed that small molecules that selectively  block the Y5
receptor  significantly  reduce food intake in rats and reduce body weight after
chronic administration.  Based upon these studies, Synaptic believes that the Y5
receptor is a "feeding" receptor, and that compounds that are selective for this
receptor  subtype may lead to new  approaches to the treatment of obesity.  From
August of 1994 to August of 1998,  the Company and  Novartis  engaged in a joint
research program focused on discovering and developing a potent and selective Y5
antagonist for the treatment of obesity.  As part of its collaboration  with the
Company,  Novartis received an exclusive  worldwide license to use the Company's
NPY  receptor   subtype  drug  discovery   systems  for  the   development   and
commercialization  of Y5  antagonists,  as well as any other NPY drugs,  for the
treatment of obesity and eating  disorders.  The license remains exclusive until
August 2001, following which time it becomes nonexclusive. Novartis has informed
the Company  that,  as of February 15, 1999,  it was  continuing  its efforts to
develop a Y5  antagonist  for the  treatment of obesity  pursuant to its license
from  the  Company  and  the  program  was in the  early  preclinical  stage  of
development.


         Pain

         As  part  of  its  efforts  to  discover   nonnarcotic  drugs  for  the
alleviation of pain,  the Company is conducting a program  focused on the design
and  development of analgesics  that stimulate the Y2 receptor  subtype.  Direct
injection  of NPY into the spinal  cord  produces a high level of  analgesia  in
laboratory  animals.  This effect is believed to be related to NPY's  ability to
stimulate  Y2  receptors.  These  receptors  control  the  release  of  chemical
messengers,  such  as  Substance  P,  which  mediate  the  transmission  of pain
responses.  Synaptic  believes that orally active small molecule  agonists which
would mimic the effects of NPY at the Y2  receptor  may offer a new  approach to
the  alleviation  of pain that  would not result in the side  effects  typically
associated  with narcotic  analgesics.  Although the Company and Grunenthal have
not yet  initiated  a joint  program  focused on the design and  development  of
Y2-selective compounds for the alleviation of pain, as part of its collaboration
with  Grunenthal,  Synaptic  has agreed to reserve the Y2 receptor  subtype as a
potential  target for such drugs  exclusively  for the  collaboration  until the
expiration of the collaborative agreement.  There can be no assurance,  however,
that the Company and Grunenthal  will  establish a joint drug discovery  program
focused on the Y2 receptor subtype.

Galanin Program

         Galanin  is a  neurotransmitter  which,  like NPY,  is a  neuropeptide.
Galanin  is widely  distributed  in the  gastrointestinal  tract and the  brain.
Pharmacologic  studies suggest the existence of multiple  receptor  subtypes for
this neuropeptide.  There are a number of possible therapeutic  applications for
drugs that  modulate  galanin  receptors,  including  the  treatment of obesity,
diabetes, Alzheimer's Disease, depression and pain. Most of the research done to
date  with  galanin  has  focused  on its role in the  control  of food  intake.
Injection  of galanin  into the brain has been shown to produce an  increase  in
food intake in satiated rats. As a result,  galanin receptor  antagonists  might
result in a reduction of food intake and may thus be useful in the  treatment of
obesity.

         The  Company  has  discovered  and cloned  genes that code for  galanin
receptor  subtypes  and  has  filed  patent   applications   relating  to  these
discoveries.  In July  1997,  the  Company  entered  into a  collaboration  with
Warner-Lambert  to  identify  and  develop  galanin  receptor  subtype-selective
compounds for a variety of
                                       21

<PAGE>


therapeutic   applications.   As  part  of  this   program,   the   Company  and
Warner-Lambert  have  identified  and are  attempting  to  characterize  galanin
receptor subtype-selective compounds. There can be no assurance that the Company
or Warner-Lambert will be successful in identifying  additional galanin receptor
subtype-selective compounds or developing any compound identified as part of the
collaboration.


Other Programs

         The Company is employing a targeted genomics approach to discover novel
genes that code for receptor  subtypes within a number of GPCR  subfamiles.  The
identities of these subfamiles have not yet been disclosed.  The Company is also
dedicating  resources  to its  nontargeted  genomics  effort.  While the Company
believes that its gene discovery  efforts will yield  potentially  valuable drug
targets,  the duration of time between its discovery of genes and the validation
of such genes as potentially  valuable drug targets is indeterminable  since the
validation  process  will  require  additional   pharmacological   and  chemical
discoveries.  The Company  uses a variety of  criteria  to  establish a priority
order for the study of new receptor gene discoveries and to determine the length
of time and amount of  resources to dedicate to each  discovery.  The Company is
also dedicating resources to its combinatorial chemistry efforts to design small
molecule  libraries  of  compounds  that  interact in the desired  manner with G
protein-coupled receptors.


Collaborative and Licensing Arrangements

         A key element of the Company's  business  strategy has been to leverage
resources   and  to  attempt  to   generate   royalty-based   revenues   through
collaborative and licensing  arrangements  with  pharmaceutical  companies.  The
Company is currently collaborating with three pharmaceutical  companies pursuant
to: (i) the Research, Option and License Agreement dated as of January 25, 1991,
as amended, with Lilly (the "Lilly Agreement");  (ii) the Collaborative Research
and License  Agreement  dated as of July 28,  1997,  with  Warner-  Lambert (the
"Warner-Lambert  Agreement");  and (iii) the  Cooperation  Agreement dated as of
January 12, 1998, as amended,  with  Grunenthal  (the  "Grunenthal  Agreement").
Concurrently with the  establishment of these  collaborative  arrangements,  the
Company  granted  licenses  to certain of its  technology  and patent  rights to
Lilly, Warner-Lambert and Grunenthal.

         In addition to its ongoing collaborative arrangements,  the Company has
granted  licenses to certain of its  technology and patent rights to three other
pharmaceutical companies pursuant to: (A) the Research Collaboration and License
Agreement  dated as of November  30,  1993,  as amended,  with Merck (the "Merck
Agreement");  (B) the Research and License Agreement dated as of August 4, 1994,
as amended  (the  "First  Novartis  Agreement")  and the  Research  and  License
Agreement  dated  as of May 31,  1996  (the  "Second  Novartis  Agreement,"  and
together with the First Novartis Agreement, the "Novartis Agreements");  and (C)
the  Option and  License  Agreement  dated as of March 2, 1998,  with Glaxo (the
"Glaxo  Agreement").  The Merck and Novartis licenses were granted  concurrently
with the  establishment  by Synaptic  of  collaborative  arrangements  with such
companies.  While both the Merck  collaboration  and the Novartis  collaboration
ended in February 1999 and August 1998,  respectively,  the associated  licenses
continue  for  the  respective  periods  provided  in  the  Merck  and  Novartis
Agreements.

         Following is a summary of each of the Company's existing  collaborative
and licensing arrangements.

                                       22

<PAGE>

         Lilly Agreement

         In January 1991, the Company and Lilly entered into the Lilly Agreement
to promote the discovery and development of serotonin receptor subtype-selective
drugs for the treatment of  serotonin-related  disorders.  The collaboration was
extended in January 1995 for an additional  four-year  period and then again for
an additional period expiring July 31, 1999.

         Under the terms of the Lilly Agreement, Lilly provides the Company with
funding to support a specified  number of the Company's  scientists  who conduct
research as part of the  collaboration.  Upon the  expiration of the term of the
collaboration  in July 1999,  Lilly will  cease to provide  research  funding to
Synaptic  and  Synaptic  will cease to provide  research  support to Lilly.  All
development,  manufacturing,  marketing  and sales of drugs  resulting  from the
collaboration will be conducted by Lilly.

         The  Company is  entitled  to  receive  from  Lilly  payments  upon the
achievement of certain drug development milestones and royalties on sales of all
drugs developed through the use of the Company's technology. Such royalties will
be payable in respect of sales in any country  over the period  commencing  with
the date of the first  commercial  sale of a drug and ending with the expiration
of related patent rights in that country.  Lilly's milestone and royalty payment
obligations  under  the  Lilly  Agreement  will  continue,  notwithstanding  the
expiration of the term of the collaboration.

         Under the terms of the Lilly  Agreement,  Lilly  received an  exclusive
worldwide  license to use all but two of the Company's  existing  serotonin drug
discovery systems for the development and commercialization of drugs that affect
serotonergic transmission. The Company retains the unlimited right to use two of
its existing  serotonin drug discovery systems and a limited right to use all of
its other serotonin drug discovery  systems in furtherance of its  collaboration
with Lilly and for cross-reactivity  screening of compounds in nonserotonin drug
discovery  programs.  Lilly was also  granted  certain  exclusive  rights  under
several of the Company's patents and patent applications.


         Warner-Lambert Agreement

         In  July  1997,  the  Company  and  Warner-Lambert   entered  into  the
Warner-Lambert  Agreement  pursuant to which they agreed to  collaborate  in the
identification  and  development  of galanin drugs for a variety of  therapeutic
applications.  Under the terms of the Warner-Lambert  Agreement,  Warner-Lambert
received an exclusive  worldwide  license to use the Company's  galanin receptor
subtype drug discovery  systems for the  development  and  commercialization  of
galanin receptor subtype-selective drugs for all therapeutic applications.

         The collaboration  involves two stages.  During the first stage,  which
commenced in October 1997 and will last up to 18 months,  each partner will fund
its own research and use  Synaptic's  galanin  receptor  subtype drug  discovery
systems to attempt to identify  and  characterize  drug  candidates.  The second
stage of the  collaboration,  which will last for three years,  will commence at
such time as the partners  identify galanin  compounds that are active in animal
models.  During this stage,  Warner-Lambert and Synaptic will attempt to develop
drug  candidates  identified  during  the first  stage,  as well as  attempt  to
identify additional drug candidates.  Upon the commencement of the second stage,
Synaptic is entitled to receive research funding from Warner-Lambert, as well as
to require Warner-Lambert to purchase equity in Synaptic. In addition,  Synaptic
is entitled to receive drug development milestones and royalties on sales of all
drugs identified through the collaboration.  There can be no assurance, however,
that any  suitable  galanin  compound  will be  identified  which would  trigger
commencement of the second stage of the collaboration or that, even assuming the
commencement of such stage, a product will result from this collaboration.

                                       23

<PAGE>

         Grunenthal Agreement

         In January 1998, the Company and Grunenthal entered into the Grunenthal
Agreement pursuant to which they agreed to collaborate in the identification and
development of drugs for the alleviation of pain. As part of the  collaboration,
the companies  jointly select  receptors that may play a role in the alleviation
of pain and  attempt  to  identify  compounds  that are  active at the  selected
receptors for further study in Grunenthal's  animal model systems.  The selected
receptors  may be  receptors  known  to be  implicated  in the  transmission  or
inhibition of pain or receptors  whose function has not yet been  elucidated but
which are cloned from  tissues  known to be so  implicated.  The  companies  are
responsible  for their own expenses  incurred  during the research  stage of any
project undertaken as part of the collaboration but will each be responsible for
50% of all development costs incurred as part of the project with respect to any
resulting drug candidates up to the  commencement of Phase III clinical  trials.
Synaptic will retain  manufacturing  and marketing  rights in the United States,
Canada  and  Mexico  with  respect  to any drug  candidates  resulting  from the
collaboration,  while Grunenthal will retain  manufacturing and marketing rights
in Europe, Central America (other than Mexico) and South America with respect to
any such  candidates.  The two  companies  will share these  rights in all other
countries. With respect to each country in its own territories and in the shared
territories in which it desires to market a drug candidate, each of Synaptic and
Grunenthal  will be responsible  for conducting  Phase III clinical  trials,  if
required,   for  obtaining  any  necessary  regulatory  approval,  and  for  all
associated costs.

         Under the terms of the Grunenthal  Agreement,  Synaptic  agreed to make
available to Grunenthal for evaluation all receptors cloned by Synaptic that may
be implicated in pain (to the extent not already licensed exclusively to a third
party) and not to pursue such receptors,  independently or with any third party,
as targets of potential  drugs for the alleviation of pain during the evaluation
period  applicable to the  receptors or during the period over which  activities
involving any such receptor are being jointly conducted with Grunenthal.


         Merck Agreement

         In  November  1993,  the  Company  and  Merck  entered  into the  Merck
Agreement pursuant to which they agreed to collaborate in the identification and
development of alpha-1a  antagonists,  principally for the treatment of BPH. The
initial term of the  collaboration was three years. In October 1996, the term of
the  collaboration  was extended through November 1997 and in November 1997, the
term of the  collaboration  was again  extended for an  additional  year through
November 1998. In November 1998, the term of the  collaboration was extended for
an additional three-month period which expired at the end of February 1999.

         Under  the  terms of the  Merck  Agreement,  Synaptic  granted  Merck a
nonexclusive worldwide license under certain of its patent rights, including the
Company's alpha adrenergic receptor patents and patent applications,  to develop
and commercialize alpha-1a antagonists.  In addition,  Synaptic granted Merck an
exclusive  worldwide license to use the Company's alpha-1a  selective  compounds
and  know-how,  as well as an exclusive  worldwide  license under certain of the
Company's  patent  rights,  including  its BPH use patents  and  related  patent
applications,  for the same purpose.  However, in March 1998, Merck granted back
to Synaptic such rights as were  necessary to enable  Synaptic to grant to Glaxo
pursuant to the Glaxo  Agreement a limited license under the BPH use patents and
an option to obtain an additional license under the BPH use patents. The Company
retained the right to use its alpha adrenergic technology for the development of
alpha adrenergic and other agents that are not alpha-1a antagonists.

         In consideration for the licenses granted to Merck,  Merck has provided
the Company with  research  funding and license  fees.  In  addition,  Merck has
agreed to pay the Company  additional  amounts  upon the  occurrence  of certain
events and royalties on product sales.

                                      24

<PAGE>

         Novartis Agreements

         In  August  1994,  the  Company  and  Novartis  entered  into the First
Novartis  Agreement  pursuant  to  which  they  agreed  to  collaborate  in  the
identification  and  development  of NPY drugs for the  treatment of obesity and
eating disorders, as well as cardiovascular  disorders. In May 1996, the Company
and Novartis entered into the Second Novartis  Agreement and an amendment to the
First Novartis  Agreement  pursuant to which the term of the  collaboration  was
extended by one year and the scope of the  collaboration was expanded to provide
for research on additional  targets for the design of drugs for the treatment of
obesity  and  eating  disorders.  The term of the  collaboration  under  the two
Novartis Agreements expired in August 1998.

         During the term of the  collaboration,  Novartis  provided  the Company
with funding to support a specified number of the Company's scientists dedicated
to work on the  collaboration.  As a result of the expiration of the term of the
collaboration  in August 1998,  Novartis no longer provides  research funding to
Synaptic and Synaptic no longer provides research support to Novartis.

         Under the terms of the  Novartis  Agreements,  Novartis  is required to
make  payments to the Company upon the  achievement  by Novartis of certain drug
development  milestones and, subject to certain limitations,  to pay the Company
royalties  on the  sale of  drugs  developed  through  the use of the  Company's
technology.  These payment obligations continue,  notwithstanding the expiration
of the term of the collaboration.

         As of  December  31,  1998,  Novartis  Produkte  AG,  an  affiliate  of
Novartis,  held  695,715  shares  of  Common  Stock  representing  6.5%  of  the
outstanding shares of Common Stock of the Company at that date.

         Under the terms of the Novartis  Agreements,  Synaptic granted Novartis
an exclusive  worldwide  license to use the Company's NPY receptor  subtype drug
discovery  systems for the  development  and  commercialization  of NPY receptor
subtype-selective  drugs for the treatment of obesity and eating  disorders,  as
well as  cardiovascular  disorders.  Synaptic also granted Novartis an exclusive
worldwide license to use any proprietary  technology of the Company that relates
to the subject matter of the Second  Novartis  Agreement to design drugs for the
treatment  of obesity and eating  disorders.  In addition,  the Company  granted
Novartis  certain  rights  under  several of the  Company's  patents  and patent
applications.  These licenses are exclusive  until August 2001,  following which
time they become nonexclusive.

         Under the Novartis  Agreements,  the Company  retained the right to use
its NPY receptor  subtype drug  discovery  systems and other  technology for all
other  therapeutic  applications,   although  Novartis  has  a  right  of  first
negotiation  with respect to new uses for NPY  receptors  discovered by Synaptic
during the course of the collaboration. Novartis has declined its right of first
negotiation  with respect to the use of the Company's NPY receptor  subtype drug
discovery  systems and other  technology for the discovery and development of Y2
receptor  subtype-selective  drugs for the treatment of central  nervous  system
disorders  and, as a result,  the  Company has the right to use the  technology,
independently or with third parties, for such purpose.


         Glaxo Agreement

         In March 1998,  the Company and Glaxo entered into the Glaxo  Agreement
pursuant to which the Company granted Glaxo (i) a nonexclusive license under the
Company's  alpha 1  adrenergic  receptor  patents to develop  and sell  alpha-1a
selective compounds for therapeutic applications other than the treatment of BPH
and (ii) until May 22, 1999, a nonexclusive license under its alpha 1 adrenergic
receptor  patents and its BPH use  patents to develop  but not to  commercialize
alpha-1a selective compounds for the treatment of BPH. In addition,  the Company
granted  Glaxo an  option  to obtain a  nonexclusive  license  under its alpha 1
adrenergic receptor patents and its BPH use patents to develop and commercialize
alpha-1a  selective   compounds  for  the

                                       25

<PAGE>

treatment of BPH. Such option is  exercisable  by Glaxo only until May 22, 1999,
upon the payment to Synaptic of an additional  amount.  As consideration for the
foregoing  licenses  and option,  Glaxo made a  $2,000,000  payment to Synaptic.
Synaptic  is also  entitled  to  receive  royalties  on  sales  of all  alpha-1a
selective  drugs sold by Glaxo so long as Synaptic has an issued patent relating
to an alpha 1 adrenergic  receptor subtype in at least one major market country,
as well as royalties on sales of any alpha-1a  antagonist  for the  treatment of
BPH in any country in which Synaptic has an issued BPH use patent.

         Other Agreements

         The Company's practice is to meet with pharmaceutical and biotechnology
companies on an on-going basis to discuss the possibility of collaborating  with
them on projects of mutual interest and/or  out-licensing its technology to them
on a noncollaborative  basis. At present,  the Company is in the early stages of
discussing   with  other   companies  the   possibility  of  a  number  of  such
arrangements.  There can be no assurance  that the Company will be successful in
consummating any such arrangement.


Patents, Proprietary Technology and Trade Secrets

         The Company's  success  depends,  in part, on its ability to establish,
protect and enforce  its  proprietary  rights  relating to its  technology.  The
Company's  policy  is  to  seek,  when  appropriate,  protection  for  its  gene
discoveries,  compound  discoveries and other  proprietary  technology by filing
patent  applications in the United States and other  countries.  The Company has
filed  numerous  patent  applications  both in the  United  States  and in other
countries covering its inventions. As of February 15, 1999, the Company had been
issued  United  States  patents  relating  to the genes  that code for the human
serotonin 1B,  serotonin 1D, serotonin 1E, serotonin 1F, serotonin 2A, serotonin
4, alpha-1a  adrenergic,  alpha-1b  adrenergic,  alpha-1d  adrenergic,  alpha-2b
adrenergic,  NPY2,  NPY4 and NPY5 receptor  subtypes and related drug  discovery
systems.  These patents  expire at various times from 2008 to 2016. In addition,
at  such  date,  several  United  States  patent  applications  relating  to the
Company's receptor gene discoveries were pending,  several corresponding patents
had  been  issued  in  other  countries  and  additional   corresponding  patent
applications had been filed in other countries.

         In April 1995,  the Company was issued its first  functional use patent
in  the  United  States.  This  patent  covers  the  use of  selective  alpha-1a
antagonists  for the  treatment of BPH. In addition,  in November  1996 and July
1998,  the  United  States  Patent  and  Trademark  Office  issued  the  Company
additional patents relating to the same subject matter.  These patents expire in
2012.  Additional related patent  applications are on file in the United States.
In  addition,  corresponding  patents  have been issued in other  countries  and
additional corresponding patent applications have been filed in other countries.

         The Company has also filed patent applications in the United States and
in  other  countries  covering  its  neurotransmitter  transporter  discoveries.
Whereas  receptors  are protein  molecules  which bind to and are  activated  by
certain ligands, transporters are protein molecules which serve to terminate the
action of certain  ligands by carrying  them back into the cells from which they
are released. As of February 15, 1999, the Company had been issued United States
patents covering four of these transporter discoveries. The Company is no longer
actively  working  on  its  transporter   program.   However,   the  transporter
technology,  insofar as it may be used to design  drugs for the  alleviation  of
pain,  has  been  reserved  exclusively  for  evaluation  by  Grunenthal  as the
potential focus of a joint program  between the Company and Grunenthal  pursuant
to the Grunenthal Agreement.  In addition, the Company is seeking to license its
transporter technology for other uses to one or more other companies.
                                       26

<PAGE>

         Additional  patent   applications   covering  the  Company's   compound
discoveries  and other  inventions  have been filed in the United  States and in
other countries and the Company intends to file additional  patent  applications
in the future.

         The Company has granted certain rights under several of its patents and
patent applications to Lilly, Merck,  Novartis,  Warner-Lambert,  Grunenthal and
Glaxo.

         Patent law as it relates to  inventions in the  biotechnology  field is
still evolving, and involves complex legal and factual questions for which legal
principles are not firmly  established.  Accordingly,  there can be no assurance
that  patents  will be  granted  with  respect  to any of the  Company's  patent
applications  currently  pending in the United States or in other countries,  or
with respect to applications  filed by the Company in the future. The failure by
the Company to receive patents pursuant to the  applications  referred to herein
and any future applications could have a material adverse effect on the Company.

         There is no clear  policy  involving  the breadth of claims  allowed in
patents or the degree of protection afforded  thereunder.  Accordingly,  no firm
predictions  can be made  regarding  the  breadth  or  enforceability  of claims
allowed in the patents  that have been issued to the Company or in patents  that
may be issued to the Company in the future,  and there can be no assurance  that
claims in the  Company's  patents,  either as  initially  allowed  by the United
States Patent and Trademark Office or any of its non-United States  counterparts
or as  subsequently  interpreted  by courts inside or outside the United States,
will be sufficiently broad to protect the Company's proprietary rights.

         Also,  there can be no assurance  that the Company's  patents or patent
applications  will  not be  challenged  by way of  interference  proceedings  or
opposed by third parties or that the Company will not be required to participate
in  interference  proceedings  or oppose the patents or patent  applications  of
third  parties in order to  protect  its  rights.  Interference  and  opposition
proceedings  can be  expensive  to  prosecute  and defend.  In 1998,  one of the
Company's patent  applications on file outside the United States was the subject
of  an  opposition  filed  by a  pharmaceutical  company.  During  the  year,  a
determination  favorable  to the Company was made in which most of the claims in
the Company's patent application were found to be patentable. As of February 15,
1999,  the Company was seeking to file an  amendment  to the patent  application
pursuant  to which  certain of the claims  that were found not to be  patentable
would be modified.  In addition,  as of February 15, 1999,  one of the Company's
patent  applications  on  file  in the  United  States  was  the  subject  of an
interference  proceeding  involving an issued  patent of a third party,  and the
Company was seeking to provoke an  interference  by the United States Patent and
Trademark  Office  between  another  of its  patent  applications  and a  patent
application  of a third party.  There can be no assurance  that the amendment to
the patent application that is the subject of the opposition  proceeding will be
accepted, or that the outcome of the interference  proceeding or the anticipated
interference  proceeding will be favorable to the Company. In the event that the
amendment is not accepted,  the patent that will be issued to the Company in the
country  in  which  the   proceeding  is  taking  place  will  not  include  the
unpatentable  or  modified  claims and the  Company  will not be able to prevent
third parties from practicing the subject matter of such claims in that country.
Further, whether or not the amendment is accepted, the opponent may seek to file
similar  oppositions  in other  countries.  In the event that the outcome of the
interference  proceedings were unfavorable to the Company, the Company might not
be able to practice the subject matter of the relevant  patent  applications  in
the United States.  Accordingly,  an unfavorable  outcome in any such proceeding
would have an adverse effect on the Company. Even if the ultimate outcome of the
pending opposition and interference proceedings is favorable to the Company, the
Company's participation in them could result in substantial cost to the Company.

         Further,  no assurance can be given that patents  issued to the Company
will not be infringed, invalidated or circumvented by others, or that the rights
granted  thereunder  will be commercially  valuable or will provide  competitive
advantages  to the Company and its present or future  collaborative  partners or

                                       27

<PAGE>

licensees.  Moreover,  because  patent  applications  in the  United  States are
maintained  in secrecy until  patents  issue,  because  patent  applications  in
certain other  countries  generally  are not published  until more than eighteen
months  after  they  are  filed  and  because   publication   of   technological
developments in the scientific or patent  literature  often lags behind the date
of such  developments,  the Company  cannot be certain  that it was the first to
invent the subject matter covered by its patents or patent  applications or that
it was the first to file patent applications for such inventions.

         The field of gene discovery has become intensely competitive.  A number
of pharmaceutical companies,  biotechnology companies, universities and research
institutions have significantly  expanded their gene discovery efforts in recent
years. Many of these groups are employing recent technological  advances in gene
sequencing  technology to rapidly identify partial  sequences of expressed genes
("expressed  sequence  tags" or "ESTs") and  complete  sequences  of genes whose
functions  have  not  been  characterized.   Some  of  these  groups,  including
Washington   University  (with  funding   provided  by  Merck),   are  currently
identifying ESTs through partial  sequencing and depositing these sequences into
public  databases,  while others are filing patent  applications  covering their
discoveries. The public availability of EST and other sequence information prior
to the time the Company  applies for patent  protection  on  corresponding  gene
discoveries  could  adversely  affect the  Company's  ability  to obtain  patent
protection  with  respect  to such  discoveries.  While  the  Company  routinely
conducts  searches of publicly  available  databases to determine  whether other
parties have  previously  cloned ESTs or  full-length  genes  discovered  by the
Company,  it is not always possible to determine  whether the third party or the
Company  was  the  first  inventor.   Patent  applications   covering  ESTs  and
full-length  genes filed by third parties may be competitive  with the Company's
applications  or  conflict  in  certain  respects  with  claims  made  under the
Company's  applications.  There can be no  assurance  that,  in the event of any
conflict,   the  Company  will  be  in  a  priority  position  with  respect  to
inventorship  on any of these  applications.  To the extent any patents issue to
other parties on such partial or full-length  genes, the risk increases that the
Company will not be able to obtain patents  covering certain of its discoveries,
that the Company's existing or future patents and patent applications may become
the subject of interference or opposition proceedings,  that the Company may not
be able to use such discoveries and/or that the potential products and processes
of the Company or its licensees may give rise to claims of patent infringement.

         The commercial  success of the Company depends in part on the Company's
ability to operate without  infringing  patents and proprietary  rights of third
parties.  The  Company  is  aware  of a  large  number  of  patents  and  patent
applications  of third  parties  that  contain  claims to genes  that code for G
protein-coupled  receptors,  ESTs of novel GPCRs and/or  compounds that interact
with GPCRs.  Patents  issued to others may  preclude  the Company  from using or
licensing  its  technology  or may  preclude  the  Company or its  collaborative
partners and other licensees from  commercializing  drugs developed with the use
of the Company's  technology.  The Company has acquired a license to use certain
technologies  covered by a patent  owned by Columbia  University.  The  Columbia
University license is a worldwide nonexclusive license to manufacture, use, sell
and sublicense drugs derived from the use of certain recombinant DNA technology.
In  consideration  for such license,  the Company has agreed to pay royalties on
sales  of  drugs  developed  through  the use of such  license.  The term of the
license  extends until the expiration of the last to expire of the patent rights
covered  by the  license.  The  Company  may be  required  to obtain  additional
licenses  to patents or other  proprietary  rights of other  parties in order to
pursue its own technologies.  No assurance can be given that any such additional
licenses would be made available on terms acceptable to the Company,  if at all.
The failure to obtain such  licenses  could result in delays in the Company's or
its collaborative partners' or licensees' activities, including the development,
manufacture  or  sale  of  drugs  requiring  such  licenses,  or  preclude  such
development, manufacture or sale.

         In some cases,  litigation  or other  proceedings  may be  necessary to
assert   infringement  claims  against  others,  to  defend  against  claims  of
infringement,  to  enforce  patents  issued to the  Company,  to  protect  trade
secrets, know-how or other intellectual property rights owned by the Company, or
to determine the scope and
                                       28

<PAGE>


validity of the  proprietary  rights of third  parties.  Such  litigation  could
result in  substantial  costs to and  diversion  of resources by the Company and
could have a material  adverse effect on the Company.  There can be no assurance
that any of the Company's patents would ultimately be held valid or that efforts
to defend any of its  patents,  trade  secrets,  know-how or other  intellectual
property  rights would be successful.  An adverse outcome in any such litigation
or proceeding could subject the Company to significant liabilities,  require the
Company to cease using the subject  technology or require the Company to license
the subject  technology from the third party, all of which could have a material
adverse effect on the Company's business.

         In  addition  to patent  protection,  the  Company  relies  upon  trade
secrets,  proprietary know-how and continuing  technological advances to develop
and maintain its competitive  position.  To maintain the  confidentiality of its
trade secrets and proprietary  information,  the Company requires its employees,
consultants and  collaborative  partners to execute  confidentiality  agreements
upon the commencement of their  relationships  with the Company.  In the case of
employees,  the agreements also provide that all inventions  resulting from work
performed  by them  while in the  employ of the  Company  will be the  exclusive
property  of  the  Company.  There  can be no  assurance,  however,  that  these
agreements will not be breached,  that the Company would have adequate  remedies
in the  event  of any  such  breach  or that  the  Company's  trade  secrets  or
proprietary   information   will  not   otherwise   become  known  or  developed
independently by others.


Competition

         The Company operates in a field in which new developments occur and are
expected to continue to occur at a rapid pace.  Competition  from  biotechnology
and  pharmaceutical  companies,  joint  ventures,  academic  and other  research
institutions,  including government-financed entities, and others is intense and
is expected to increase.  Although the Company believes that the elements of its
human  receptor-targeted  drug  design  technology  and the  manner in which the
Company has  integrated  these elements are  proprietary to the Company,  one or
more of such elements are currently  employed by many other  pharmaceutical  and
biotechnology  companies in their drug discovery  efforts.  Moreover,  there are
other companies with drug discovery  programs at least some of the objectives of
which are the same as or similar to those of the Company.

         The Company is aware of many pharmaceutical and biotechnology companies
that  are  engaged  in  efforts  to  develop  compounds  that  interact  with  G
protein-coupled  receptor  subtypes,  including receptor subtypes with which the
Company is working.  In addition,  there are a number of companies  and academic
and other research institutions engaged in gene sequencing, gene discovery, gene
expression  analysis and other  genomic  service  businesses.  There is a finite
number  of genes in the  human  genome,  and many  competitors  are  seeking  to
identify,  sequence and determine the  biological  function of a large number of
genes in the shortest time  possible in order to obtain a  proprietary  position
with respect to the largest number of novel genes discovered.  In addition,  the
Company is aware that other companies and research  institutions  have developed
genomic  databases  and are  marketing,  or have  announced  their  intention to
market,  their  data  to  competitors.   The  Company  expects  that  additional
competitors  will attempt to establish gene sequence,  gene  expression or other
genomic databases in the future.

         In addition,  competitors may discover and establish  patent  positions
with respect to the same gene  sequences  discovered  by the  Company.  Further,
certain entities engaged in gene sequencing have made and are continuing to make
the  results  of their  sequencing  efforts  publicly  available.  These  patent
positions or the public  availability of gene sequences  comprising  substantial
portions of the human genome could decrease the potential value of the Company's
discoveries and adversely affect the Company's  ability to realize  royalties or
other revenue from  commercialization  of this genetic  information and products
based upon this genetic information.

                                       29

<PAGE>

         Many of the Company's competitors are large biotechnology companies and
multinational pharmaceutical companies who may employ in such activities greater
financial and other resources,  including larger research and development staffs
and more extensive marketing and manufacturing  organizations,  than the Company
or its present and future  collaborative  partners or  licensees.  The  genomics
industry is characterized by extensive research efforts and rapid  technological
progress.  To remain  competitive in its genomics  efforts,  the Company will be
required to continue to expand its databases and to enhance the functionality of
its  bioinformatics  and database  software.  New  developments  are expected to
continue  and  discoveries  by others  may  render the  Company's  services  and
potential products noncompetitive.

         The Company  also  expects to encounter  significant  competition  with
respect to the drugs that it and its collaborative  partners and other licensees
plan to develop.  Companies  that  complete  clinical  trials,  obtain  required
regulatory  approvals and commence  commercial sales of their drugs before their
competitors may achieve a significant competitive advantage. In order to compete
successfully,  the Company's goal is to obtain patent  protection for certain of
its gene  discoveries  and drug  discovery  systems  and to make  these  systems
available  to  pharmaceutical  companies  through  collaborative  and  licensing
arrangements  for  use  in  discovering  drugs  for  major  markets  which  have
historically  been difficult to address using the  traditional  approach to drug
discovery.  There can be no  assurance,  however,  that the Company  will obtain
patents covering its technology that protect it against  competitors.  Moreover,
there can be no assurance  that the  Company's  competitors  will not succeed in
developing  technologies  that circumvent the Company's  technology or that such
competitors will not succeed in developing  technologies and drugs that are more
effective than those developed by the Company and its collaborative partners and
other licensees or that would render  technology or drugs of the Company and its
collaborators  and other  licensees less  competitive or obsolete.  In addition,
there can be no  assurance  that  competitors  of the  Company  will not  obtain
regulatory  approvals  of their  drugs more  rapidly  than the  Company  and its
collaborative partners and other licensees,  thereby rendering the Company's and
its  collaborative  partners'  and  other  licensees'  drugs  noncompetitive  or
obsolete.  Moreover,  there can be no assurance  that the Company's  competitors
will not obtain patent  protection or other  intellectual  property  rights that
would limit the Company's or its  collaborative  partners' and other  licensees'
ability to use the Company's technology or commercialize its or their drugs.


Government Regulation

         The development, manufacturing and marketing of drugs developed through
the use of the  Company's  technology  are  subject to  regulation  by  numerous
Federal,  state and local  governmental  authorities in the United  States,  the
principal  one of which is the FDA, and by similar  agencies in other  countries
(each of such  Federal,  state,  local and other  authorities  and  agencies,  a
"Regulatory  Agency").  Regulatory  Agencies  impose  mandatory  procedures  and
standards for the conduct of certain preclinical testing and clinical trials and
the  production  and  marketing  of drugs for  human  therapeutic  use.  Product
development and approval of a new drug are likely to take many years and involve
the expenditure of substantial resources.

         The steps  required  by the FDA before new drugs may be marketed in the
United States include: (i) preclinical  studies;  (ii) the submission to the FDA
of a request for authorization to conduct clinical trials on an  investigational
new drug (an "IND");  (iii)  adequate  and  well-controlled  clinical  trials to
establish  the  safety  and  efficacy  of the drug for its  intended  use;  (iv)
submission to the FDA of a new drug  application (an "NDA");  and (v) review and
approval of the NDA by the FDA.

         In the United States, preclinical testing includes both in vitro and in
vivo laboratory  evaluation and characterization of the safety and efficacy of a
drug and its  formulation.  Laboratories  involved in  preclinical  testing must
comply with FDA  regulations  regarding Good Laboratory  Practices.  Preclinical
testing  results are submitted to the FDA as part of the IND and are reviewed by
the FDA prior to the  commencement  of human

                                      30

<PAGE>


clinical trials. Unless the FDA objects to an IND, the IND will become effective
30 days  following  its  receipt  by the FDA.  There  can be no  assurance  that
submission of an IND will result in the commencement of human clinical trials.

         Clinical   trials,    which   involve   the   administration   of   the
investigational  drug to healthy volunteers or to patients under the supervision
of  a  qualified  principal  investigator,  are  typically  conducted  in  three
sequential  phases,  although the phases may overlap with one another.  Clinical
trials must be  conducted  in  accordance  with Good  Clinical  Practices  under
protocols that detail the objectives of the study,  the parameters to be used to
monitor safety and the efficacy criteria to be evaluated.  Each protocol must be
submitted to the FDA as part of the IND.  Further,  each clinical  study must be
conducted under the auspices of an independent  Institutional  Review Board (the
"IRB")  at the  institution  where  the study  will be  conducted.  The IRB will
consider,  among other things, ethical factors, the safety of human subjects and
the  possible  liability  of  the  institution.  Compounds  must  be  formulated
according to the FDA's Good Manufacturing Practices ("GMP").

         Phase I clinical  trials  represent the initial  administration  of the
investigational drug to a small group of healthy human subjects or, more rarely,
to a group of selected patients with the targeted disease or disorder.  The goal
of Phase I clinical  trials is typically to test for safety  (adverse  effects),
dose  tolerance,  absorption,  bio-  distribution,   metabolism,  excretion  and
clinical  pharmacology  and,  if  possible,  to gain  early  evidence  regarding
efficacy.

         Phase II clinical  trials involve a small sample of the actual intended
patient  population and may seek to assess the efficacy of the drug for specific
targeted  indications,  to determine  dose  tolerance and the optimal dose range
and/or to gather additional information relating to safety and potential adverse
effects.

         Once an  investigational  drug is found to have  some  efficacy  and an
acceptable safety profile in the targeted patient population, Phase III clinical
trials are initiated to establish  further  clinical  safety and efficacy of the
investigational  drug in a broader sample of the general  patient  population at
geographically   dispersed  study  sites  in  order  to  determine  the  overall
risk-benefit  ratio of the drug and to provide an adequate basis for all package
labeling.  The results of the research and product  development,  manufacturing,
preclinical  testing,  clinical trials and related  information are submitted to
the FDA in the form of an NDA for approval of the  marketing and shipment of the
drug.

         Timetables for the various  phases of clinical  trials and NDA approval
cannot be predicted with any certainty.  The Company, its collaborative partners
or other  licensees or the FDA may suspend  clinical trials at any time if it is
believed  that  individuals  participating  in such trials are being  exposed to
unacceptable  health risks. Even assuming that clinical trials are completed and
that an NDA is submitted to the FDA, there can be no assurance that the NDA will
be reviewed by the FDA in a timely manner or that once reviewed, the NDA will be
approved. The approval process is affected by a number of factors, including the
severity of the targeted indications, the availability of alternative treatments
and the risks and benefits  demonstrated in clinical trials. The FDA may deny an
NDA if  applicable  regulatory  criteria  are  not  satisfied,  or  may  require
additional testing or information with respect to the investigational drug. Data
obtained from  preclinical  and clinical  activities are  susceptible to varying
interpretations  which  could also  delay,  limit or prevent  Regulatory  Agency
approval. Even if initial FDA approval is obtained,  further studies,  including
post-market  studies,  may be  required in order to provide  additional  data on
safety and will be required in order to gain  approval  for the use of a product
as a treatment for clinical  indications  other than those for which the product
was initially tested.  The FDA will also require  post-market  reporting and may
require  surveillance  programs to monitor the side effects of the drug. Results
of  post-marketing  programs  may limit or expand the further  marketing  of the
drug. Further, if there are any modifications to the drug,  including changes in
indication, manufacturing process or labeling, an NDA supplement may be required
to be submitted to the FDA.  Finally,  delays or rejections  may be  encountered
based  upon  changes  in  Regulatory  Agency  policy  during  the period of drug
development and/or
                                       31

<PAGE>


the period of review of any  application  for Regulatory  Agency  approval for a
compound.  Moreover,  because most of the Company's  collaborative  partners and
other  licensees are generally  responsible for  preclinical  testing,  clinical
trials, regulatory approvals,  manufacturing and commercialization of drugs, the
ability  to obtain  and the timing of  regulatory  approvals  are not within the
control of the Company.  There can be no assurance that the regulatory framework
described  above will not change or that additional  regulations  will not arise
that may affect approval of a potential drug.

         Each  manufacturing  establishment for new drugs is required to receive
some form of approval by the FDA.  Among the conditions for such approval is the
requirement   that  the   prospective   manufacturer's   quality   control   and
manufacturing procedures conform to GMP, which must be followed at all times. In
complying  with  standards set forth in these  regulations,  manufacturers  must
continue to expend time, monies and effort in the area of production and quality
control to ensure full technical compliance.  Manufacturing establishments, both
foreign and domestic,  are also subject to inspections by or under the authority
of the FDA and may be subject to inspections by foreign and other Federal, state
or local agencies.

         Prior to the  commencement  of marketing a product in other  countries,
approval by the Regulatory Agencies in such countries is required, regardless of
whether FDA  approval  has been  obtained  for such  product.  The  requirements
governing the conduct of clinical trials and product  approvals vary widely from
country to country,  and the time required for approval may be longer or shorter
than the time required for FDA approval.  Although there are some procedures for
unified filings for certain European countries, in general, each country has its
own procedures and requirements.

         Delays in obtaining  Regulatory Agency approvals could adversely affect
the  marketing  of any  drugs  developed  by the  Company  or its  collaborative
partners or other licensees,  impose costly procedures upon the Company's or its
collaborative partners' or other licensees' activities, diminish any competitive
advantages that the Company or its collaborative partners or other licensees may
attain and  adversely  affect the  Company's  ability  to  receive  revenues  or
royalties.   There  can  be  no  assurance   that,  even  after  such  time  and
expenditures,  Regulatory  Agency  approvals  will be obtained for any compounds
developed  by, in  collaboration  with or pursuant to licenses from the Company.
Moreover,  even if Regulatory  Agency  approval for a compound is granted,  such
approval  may  entail  limitations  on the  indicated  uses for  which it may be
marketed.  Further,  approved  drugs  and their  manufacturers  are  subject  to
continual  review,  and discovery of previously  unknown problems with a drug or
its  manufacturer  may  result in  restrictions  on such  drug or  manufacturer,
including withdrawal of the drug from the market.  Regulatory Agency approval of
prices is required in many  countries  and may be required for the  marketing of
any  drug  developed  by the  Company  or its  collaborative  partners  or other
licensees.

         As with many biotechnology and pharmaceutical  companies, the Company's
activities involve the use of radioactive compounds and hazardous materials. The
Company is subject to local, state and Federal laws and regulations  relating to
occupational safety,  laboratory practices, the use, handling and disposition of
radioactive materials, environmental protection and hazardous substance control.
Although  the Company  believes  that its safety  procedures  for  handling  and
disposing of  radioactive  compounds and other  hazardous  materials used in its
research and  development  activities  comply with the  standards  prescribed by
Federal,  state and local regulations,  the risk of accidental  contamination or
injury from these materials cannot be completely eliminated. In the event of any
such accident,  the Company could be held liable for any damages that result and
any such liability could exceed the resources of the Company.

                                       32

<PAGE>


Employees

         As of February 15, 1999, the Company had 127 full-time employees, 40 of
whom hold Ph.D. or M.D. degrees. Of the Company's full-time employees,  109 were
engaged  directly  in  scientific  research  and 18 were  engaged in general and
administrative   functions.   The  Company's   scientific   staff  members  have
diversified   experience   and   expertise  in  molecular   and  cell   biology,
biochemistry,  molecular pharmacology,  medicinal, structural, combinatorial and
computer-assisted chemistry and information systems.

         All employees have entered into agreements with the Company pursuant to
which  they are  prohibited  from  disclosing  to third  parties  the  Company's
proprietary  information and assign to the Company all rights to inventions made
by them during their employment with the Company.

         The  Company's  employees  are not covered by a  collective  bargaining
agreement,  and the Company believes that its relationship with its employees is
good.


Item 2.  Properties

         The Company  leases  laboratory  and office  space in a facility at 215
College  Road in Paramus,  New  Jersey.  The Company  recently  entered  into an
amendment to its lease which  increased  its leased space to up to 84,000 square
feet.  The term of the lease  extends  through  the year  2015.  The  Company is
currently   converting  a  portion  of  its  space  into   additional   research
laboratories and may renovate other portions of its space in 1999 for additional
laboratories  and  offices.  The Company  believes  that the space it  currently
leases is adequate to accommodate  the anticipated  administrative  and research
needs of the Company for the foreseeable future.


Item 3.  Legal Proceedings

         Other than as  described  in Item 1 above under the  caption  "Patents,
Proprietary  Technology  and Trade  Secrets,"  the Company is not a party to any
legal proceedings.


Item 4.  Submission of Matters to a Vote of Securityholders

         None.

                                       33

<PAGE>



                                     Part II


Item 5. Market For Registrant's Common Equity and Related Stockholder Matters

         The Common Stock of the Company  trades on the National  Market tier of
The Nasdaq Stock Market  under the symbol SNAP.  As of February 15, 1999,  there
were  approximately  2,324  beneficial  shareholders  of record of the Company's
Common Stock.  No dividends  have been paid on the Common Stock to date, and the
Company  does  not  currently  intend  to  declare  or  pay  dividends  for  the
foreseeable future.

         The  following  tables set forth the high and low last trade prices for
the  Common  Stock as  reported  by The  Nasdaq  Stock  Market  for the  periods
indicated below.


                                1998 Fiscal Year

                                       High              Low
                                       ----              ----
         1st Quarter 1998              14                10 7/16

         2nd Quarter 1998              15 1/8            11 1/8

         3rd Quarter 1998              15 1/8            9 3/4

         4th Quarter 1998              16 1/8            12 5/8


                                1997 Fiscal Year

                                       High              Low
                                       ----              ----
         1st Quarter 1997              15 1/2            12 1/4

         2nd Quarter 1997              14                10 3/8

         3rd Quarter 1997              15 5/8            12 3/8

         4th Quarter 1997              16 3/4            10





                                       34

<PAGE>



Item 6.       Selected Financial Data


         The  following  table  presents  selected  information  relating to the
financial  condition  and results of operations of the Company for the past five
years.  The  following  data should be read in  conjunction  with the  Company's
financial statements.

(In thousands, except per share information)


                           1998       1997       1996       1995        1994
- --------------------------------------------------------------------------------
Total revenues          $  9,352   $ 10,307   $  9,481    $  7,977   $  5,043
Total expenses          $ 19,576   $ 17,853   $ 14,319    $ 12,078   $ 11,221
Other income, net       $  3,731   $  2,200   $  2,205    $    734   $    651
Net loss                $ (6,493)  $ (5,346)  $ (2,633)   $ (3,367)  $ (5,527)
Basic and diluted net
 loss per share         $  (0.61)  $  (0.66)  $  (0.35)   $  (4.76)        --
Total assets            $ 64,696   $ 69,402   $ 40,355    $ 40,913   $ 20,024
Long term debt                --         --         --    $    107   $    259
Convertible redeemable
 preferred stock              --         --         --          --   $ 36,199
Accumulated deficit     $(35,809)  $(29,316)  $(23,970)   $(21,337)  $(17,970)
Stockholders'
 equity (deficiency)    $ 62,676   $ 67,704   $ 39,040    $ 38,668   $(17,592)
- --------------------------------------------------------------------------------



Item 7.  Management's Discussion and Analysis of Financial Condition and Results
          of Operations

Overview

         Synaptic Pharmaceutical  Corporation is a biotechnology company engaged
in the  development  of a broad platform of enabling  technology  which it calls
"human  receptor-targeted drug design technology." The Company is utilizing this
technology to discover and clone the genes that code for human receptor subtypes
that  may  be  associated   with  specific   disorders.   The  Company  and  its
collaborative  partners and other  licensees  are in turn  utilizing  the cloned
receptor genes to design  compounds  that can  potentially be developed as drugs
for treating these disorders.

         The  Company  is  currently  collaborating  with  three  pharmaceutical
companies,   Eli   Lilly   and   Company   ("Lilly"),   Warner-Lambert   Company
("Warner-Lambert")  and  Grunenthal  GmbH  ("Grunenthal"),  pursuant to: (i) the
Research, Option and License Agreement dated as of January 25, 1991, as amended,
with Lilly (the "Lilly Agreement");  (ii) the Collaborative Research and License
Agreement dated as of July 28, 1997, with  Warner-Lambert  (the  "Warner-Lambert
Agreement");  and (iii) the Cooperation  Agreement dated as of January 12, 1998,
as amended, with Grunenthal (the "Grunenthal Agreement").  Concurrently with the
establishment of these collaborative arrangements,  the Company granted licenses
to certain of its  technology  and patent  rights to Lilly,  Warner-Lambert  and
Grunenthal.

         In addition to its ongoing collaborative arrangements,  the Company has
granted  licenses to certain of its  technology and patent rights to three other
pharmaceutical companies, Merck and Company ("Merck"),

                                       35

<PAGE>



Novartis Pharma AG ("Novartis") and Glaxo Group Limited ("Glaxo"),  pursuant to:
(A) the Research  Collaboration  and License  Agreement dated as of November 30,
1993,  as amended,  with Merck (the "Merck  Agreement");  (B) the  Research  and
License  Agreement  dated as of August 4, 1994, as amended (the "First  Novartis
Agreement") and the Research and License Agreement dated as of May 31, 1996 (the
"Second Novartis Agreement," and together with the First Novartis Agreement, the
"Novartis  Agreements");  and (C) the Option and License  Agreement  dated as of
March 2, 1998,  with  Glaxo  (the  "Glaxo  Agreement").  The Merck and  Novartis
licenses  were  granted  concurrently  with the  establishment  by  Synaptic  of
collaborative   arrangements   with  such   companies.   While  both  the  Merck
collaboration and the Novartis  collaboration  ended in February 1999 and August
1998, respectively,  the associated licenses continue for the respective periods
provided in the Merck and Novartis Agreements. For convenience of reference, all
of the agreements  referred to in this paragraph and the preceding paragraph are
collectively referred to in this Item 7 as the "License Agreements."

         The Company had been receiving  research funding to support a specified
number of the  Company's  scientists  under its  collaborations  with  Merck and
Novartis.  On February 28, 1999 and August 4, 1998,  respectively,  the research
funding  ended in  accordance  with the Merck  and  Novartis  Agreements.  Since
inception, the Company has financed its operations primarily through the sale of
its stock, through contract and license revenue under certain of its agreements,
and through  interest income and capital gains  resulting from its  investments.
The Company also has received  revenues from  government  grants under the Small
Business  Innovative  Research  ("SBIR")  program of the National  Institutes of
Health.

         Under the  License  Agreements,  the Company may receive one or more of
the following  types of revenue:  contract  revenue,  license  revenue,  royalty
revenue or revenue from the sales of drugs.  Contract revenue includes  research
funding to support a specified  number of the Company's  scientists and payments
upon the achievement of specified research and development milestones.  Research
funding revenue is recognized  ratably over the period of the  collaboration  to
which it relates and is based upon predetermined funding requirements.  Research
and  development  milestone  payment  revenue  is  recognized  when the  related
research or  development  milestone  is  achieved.  License  revenue  represents
non-refundable  payments for a license to one or more of the  Company's  patents
and/or a  license  to the  Company's  technology.  Non-refundable  payments  for
licenses are recognized at such time as they are received or, if earlier, become
guaranteed.  Under each of the License  Agreements  (other  than the  Grunenthal
Agreement),  the Company is entitled to receive royalty  payments based upon the
sales of drugs that may be developed using the Company's  technology or that may
be covered by the Company's patents. Under the Grunenthal Agreement, the Company
has  development  and marketing  rights in certain  territories  with respect to
drugs,  if any, that are jointly  identified as part of the  collaboration  with
Grunenthal.  Accordingly,  the  Company may  receive  revenue  from sales in its
territories (as defined) of such drugs if it markets them  independently  or the
Company may receive  royalty  payments if it licenses its marketing  rights to a
third party.  To date, the Company has not received  either  royalty  revenue or
revenue  from the sales of drugs and the Company does not expect to receive such
revenues for a number of years, if at all.

         To  date,  the  Company's  expenditures  have  been  for  research  and
development related expenses, general and administrative related expenses, fixed
asset purchases and various patent related  expenditures  incurred in protecting
the Company's technologies.  The Company has been historically  unprofitable and
had an  accumulated  deficit of  $35,809,000  at December 31, 1998.  The Company
expects to continue to incur operating  losses for a number of years and may not
become  profitable,  if at all, unless and until it receives  royalty revenue or
revenue from sales of drugs that may be developed with the use of its technology
or its patent rights.




                                       36

<PAGE>



Results of Operations

         Comparison of Fiscal Years Ended December 31, 1998, 1997 and 1996

         Revenues. The Company recognized revenue of $9,352,000, $10,307,000 and
$9,481,000  for the  fiscal  years of 1998,  1997 and  1996,  respectively.  The
decrease  of  $955,000  from  1998 to 1997  was  attributable  primarily  to the
following:  a net decrease in contract revenue of $2,583,000 resulting primarily
from the contractual termination of the Novartis Agreements on August 3, 1998 as
well as the  reduction in  full-time  equivalent  scientists  being funded under
another of the License  Agreements  and a decrease in grant  revenue of $372,000
which were offset by an  increase of  $2,000,000  of license  revenue  under the
Glaxo Agreement.

         The increase of $826,000 from 1996 to 1997 was  attributable  primarily
to: an increase in contract  revenue of $2,842,000  resulting from the expansion
of the  Company's  collaborative  arrangement  with Lilly and increases in rates
charged per full-time equivalent scientist under those of the License Agreements
under which the Company received research funding partially offset by a decrease
of $2,000,000  of  non-recurring  license  revenue under the terms of one of the
License Agreements during the third quarter of 1996.

         Research and Development  Expenses.  The Company incurred  research and
development expenses of $15,274,000,  $13,781,000 and $11,337,000 for the fiscal
years of 1998, 1997 and 1996, respectively.  The increase of $1,493,000, or 11%,
from 1997 to 1998 was  attributable  primarily  to: an  increase  of $673,000 in
compensation  and fringe benefit  expenses;  an increase of $377,000 in facility
related costs; and an increase of $231,000 in research supply costs.

         The increase of $2,444,000,  or 22%, from 1996 to 1997 was attributable
primarily  to: an increase of  $1,274,000  in  compensation  and fringe  benefit
expenses;  an increase of $726,000 in research supply costs;  and an increase of
$397,000 in facility related costs.

         General and Administrative  Expenses.  The Company incurred general and
administrative expenses of $4,302,000,  $4,072,000 and $2,982,000 for the fiscal
years of 1998,  1997 and 1996,  respectively.  The increase of $230,000,  or 6%,
from 1997 to 1998 was  attributable  primarily  to: an  increase  of $215,000 in
compensation and fringe benefit expenses.

         The increase of $1,090,000,  or 37%, from 1996 to 1997 was attributable
primarily to an increase in patent and patent  related  expenses  resulting from
increased  patent related  activities and the expensing of all patent and patent
application costs as incurred, effective October 1, 1996.

         Other Income,  Net. The Company  recorded  other income of  $3,731,000,
$2,200,000  and  $2,205,000  for the  fiscal  years  of  1998,  1997  and  1996,
respectively.  The increase of $1,531,000  from 1997 to 1998 in other income was
primarily due to higher interest income as a result of higher average cash, cash
equivalent and marketable  securities  balances  during 1998 which resulted from
the receipt of net proceeds from a public offering of its common stock completed
in November 1997.

         Net Loss and  Basic  and  Diluted  Net  Loss  Per  Share.  The net loss
incurred by the Company was $6,493,000 ($0.61 per share),  $5,346,000 ($0.66 per
share) and $2,633,000  ($0.35 per share) for the fiscal years of 1998,  1997 and
1996,  respectively.  The  decrease  in net loss per share of $0.05 from 1997 to
1998  resulted  primarily  from higher  average  outstanding  shares during 1998
partially  offset by the recognition of higher total  expenses.  The increase in
average  outstanding shares primarily relates to the sale of 2,875,000 shares of
common stock in a public  offering in the fourth  quarter of 1997 as well as the
sale of  137,648  shares of  common  stock  pursuant  to the  exercise  of stock
warrants in January 1998.

                                       37

<PAGE>



         The increase in net loss and net loss per share $0.31 from 1996 to 1997
was  primarily  attributable  to the  recognition  during  1996 of higher  total
expenses.

         Operating Trends.  Revenues may vary from period to period depending on
numerous  factors  including  the timing of  revenue  earned  under the  License
Agreements  and revenue  that may be earned under  future  collaborative  and/or
licensing  agreements.  During  1998,  the Company  recognized  an  aggregate of
$7,182,000  in research  funding  revenue  from Lilly,  Merck and  Novartis  and
$2,000,000 in license  revenue from Glaxo.  Based on current  commitments by the
Company's  collaborative  partners, the Company expects research funding revenue
to amount to $1,759,000 in 1999. Furthermore,  under the terms of one or more of
the License  Agreements,  additional  revenues  may be  recognized  if:  certain
milestones  are  achieved;  an  option  to  obtain  additional  licenses  to the
Company's  patents  is  exercised;  a  collaboration  advances  to a new  stage,
triggering a research  funding  obligation  on the part of one of the  Company's
collaborative  partners under an existing  agreement;  or if collaborations  are
renewed. Management continues to assess the opportunity for obtaining additional
funding under new collaborative and/or licensing agreements as well as obtaining
financing  through  equity  transactions  in order to best  determine its future
expenditure  levels.  The  Company  continues  to  seek  additional  funding  by
leveraging its resources,  however,  there can be no assurance that such funding
will be available on acceptable terms or at all.

         It is also expected that  operating  expenses will increase in order to
support  on-going  collaborations  and  internal  research  efforts.   Operating
expenses  are  expected  to  continue  to grow,  at a minimum,  consistent  with
historical  trends.  Patent related  expenditures are expected to grow at a rate
that is faster than the historical operating expense growth rate.

         Other  income,  net is expected to decline in 1999 and 2000 as existing
funds are utilized to support the Company's operations.

         Property  and  equipment  costs are expected to continue to increase as
the Company's currently underutilized space is converted into laboratory space.

         At December 31, 1998, the Company held  marketable  securities  with an
estimated  fair  value of  $39,788,000.  The  Company's  primary  interest  rate
exposure results from changes in short-term interest rates. The Company does not
purchase financial instruments for trading or speculative  purposes.  All of the
marketable  securities held by the Company are classified as  available-for-sale
securities. The following table provides information about marketable securities
held by the Company at December 31, 1998:


                                                                     Estimated
       Principal Amount and Weighted Average Stated Rate                Fair
                   by Expected Maturity                                Value
- ------------------------------------------------------------         ---------
(000's)      1999    2000    2001     2002     2003    Total          (000's)
- ------------------------------------------------------------         ---------
Principal   $7,142  $3,987  $13,790  $5,500   $8,500  $38,919         $39,788

Weighted    
 Average
 Stated
 Rates       5.89%   6.80%   8.16%    6.24%    5.87%    6.83%             --
- -------------------------------------------------------------        ---------

         The  stated  rates of  interest  expressed  in the above  table may not
approximate the actual yield of the securities which the Company currently holds
since the Company has purchased some of its marketable  securities at other than
face value. Additionally,  some of the securities represented in the above table
may be

                                       38

<PAGE>



called or  redeemed,  at the option of the issuer,  prior to their  expected due
dates. If such early  redemptions  occur,  the Company may reinvest the proceeds
realized on such calls or redemptions in marketable securities with stated rates
of interest or yields  that are lower than those of current  holdings  affecting
both future cash interest streams and future earnings.

         In addition to investments in marketable securities, the Company places
some of its cash in money market  funds in order to keep cash  available to fund
operations  and to hold  cash  pending  investments  in  marketable  securities.
Fluctuations  in short  term  interest  rates  will  affect  the yield on monies
invested in such money market  funds.  Such  fluctuations  can have an impact on
future cash  interest  streams  and future  earnings  of the  Company,  but such
impacts are not expected to be material.

         Management  believes  that  it has  remedied  all  of  its  significant
information  technology  and non-  information  technology  systems  that may be
affected  by  the  year  2000  issue.  Management  has  made  inquiries  of  its
significant vendors as to their readiness for the year 2000 issue. The Company's
significant  vendors  have  represented  to the  Company  that  there  is a high
probability that the year 2000 issue will not cause a significant  disruption to
the delivery of goods and services  after 1999,  however,  the Company  gives no
assurance  as to whether or not this will be the case.  To date the  Company has
spent less than  $50,000 to remedy  systems  that may have been  affected by the
year 2000 issue and does not expect future expenses,  if any, to be material. If
it turns out that some of the Company's  systems or its vendors' systems are not
year 2000  compliant,  management  believes the most likely worst case  scenario
would be temporary reduction in the current level of productivity. The Company's
contingency plan includes,  but may not be limited to, manual  workarounds and a
temporary increase in the current staffing level.

         The Company does not believe that  inflation has had a material  impact
on its results of operations.


Liquidity and Capital Resources

         At December 31, 1998 and 1997,  cash,  cash  equivalents and marketable
securities aggregated $56,378,000 and $62,100,000, respectively. The decrease in
cash, cash equivalents and marketable  securities  resulted from the use of cash
to fund operating activities and purchase property and equipment,  both of which
were offset by cash provided by the issuance of common stock.

         To date, the Company has met its cash requirements  through the sale of
its stock, through contract and license revenue, through SBIR grants and through
interest income and gains resulting from its investments. During 1998, aggregate
research funding from Lilly, Merck and Novartis amounted to $7,182,000. Research
funding  under the Merck and Novartis  Agreements  ended  concurrently  with the
termination  of the related  collaborations.  Warner-Lambert  does not currently
provide  research  funding to the Company  and the Company  does not expect that
such funding will be provided,  if at all, until  mid-1999.  In addition,  it is
anticipated  that if the current  biotechnology  financing  environment  remains
unfavorable, raising additional capital may be difficult.

         At  December  31,  1998,  the  Company had  invested  an  aggregate  of
$10,618,000 in property and equipment.

         The Company leases  laboratory and office facilities under an agreement
expiring on December 31, 2015.  The minimum  annual  payment  under the lease is
currently $1,107,000. A standby letter of credit for $580,000 has been issued to
the Company's landlord as a security deposit and is secured by investment

                                       39

<PAGE>



securities of the Company which are, to the extent of $600,000,  recorded in the
balance  sheet as  "Restricted  Cash."  This  standby  letter of credit  must be
renewed annually during the life of the lease.

         At  December  31,  1998,  the  Company had  $56,378,000  in cash,  cash
equivalents  and  marketable  securities.  The Company  intends to utilize these
funds primarily to conduct its current and future research programs,  for patent
related  expenditures,   for  general  corporate  purposes,  to  make  leasehold
improvements  to its  facilities  and to purchase  property and  equipment.  The
Company expects to continue to incur operating losses for a number of years. The
Company believes that its cash on hand,  together with the funds that it expects
to receive under certain of the License Agreements and interest income,  will be
sufficient to fund its  operations,  as well as the  Company's  share of certain
development costs under the Grunenthal Agreement, through the year 2001.

         As  of  December  31,  1998,   the  Company  had  net  operating   loss
carryforwards of approximately  $30,000,000 for Federal income tax purposes that
will expire principally in the years 2002 through 2018. In addition, the Company
had research and  development  credit  carryforwards  of  $1,610,000  which will
expire  principally in 2002 through 2018. For financial  reporting  purposes,  a
valuation  allowance  has been  recognized  to offset  the  deferred  tax assets
related to these carryforwards. Due to limitations imposed by the Tax Reform Act
of 1986, and as a result of a significant  change in the Company's  ownership in
1993  and  1997,   the   utilization   of  $25,000,000  of  net  operating  loss
carryforwards is subject to annual  limitation.  The utilization of the research
and development credits is similarly limited.


Disclosure Regarding Forward-Looking Statements

         This Report includes "forward-looking statements" within the meaning of
Section 27A of the  Securities  Act and Section 21E of the Exchange  Act.  These
forward-looking  statements  include,  but are not limited to, those relating to
future  cash  and  spending   plans,   amounts  of  future   research   funding,
patent-related  plans,  additional drug discovery  programs,  the effectiveness,
efficacy,  or other  results of any of the Company's  technology  or drugs,  any
other statements regarding future growth,  future cash needs, future operations,
business plans and financial  results,  and any other  statements  which are not
historical  facts.  When  used  in  this  document,   the  words   "anticipate,"
"estimate,"  "expect," "may," "project," and similar expressions are intended to
be  among  the  statements  that  identify  forward-looking   statements.   Such
statements involve risks and uncertainties, including, but not limited to, those
risks and  uncertainties  relating to those  described  below,  as well as other
factors  detailed  elsewhere in this Report,  including in Item 1 of this Report
under  the  captions  "Patents,   Proprietary  Technology  and  Trade  Secrets,"
"Competition"  and  "Government  Regulation"  ("Cautionary  Statements").   Such
Cautionary  Statements qualify the  forward-looking  statements included in this
Report.  Should  one or more of these  risks or  uncertainties  materialize,  or
should  underlying  assumptions  prove  incorrect,   actual  outcomes  may  vary
materially from those indicated. All subsequent written and oral forward-looking
statements  attributable  to the  Company  or  persons  acting on its behalf are
expressly qualified in their entirety by the Cautionary Statements.


Early Stage of Product Development; Technological Uncertainty

         Since its  inception  in January  1987,  the  Company  has  focused its
activities on the  discovery  and cloning of receptor  genes and the use of such
genes as tools in the design of precisely  targeted  compounds for a broad range
of  therapeutic  applications.  To  date,  neither  the  Company  nor any of its
collaborative partners or other licensees has completed the development of drugs
designed with the use of the Company's technology

                                       40

<PAGE>



and the  Company  does not  expect  that  any  drugs  resulting  from its or its
collaborative  partners' or other  licensees'  research and development  efforts
will be  commercially  available for a number of years, if at all. All compounds
discovered  by the Company and its  collaborative  partners and other  licensees
will require  extensive  preclinical and clinical testing prior to submission of
any  regulatory  application  for  commercial  use.  Extensive  preclinical  and
clinical  testing  required to establish  safety and efficacy  will take several
years, and the time required to commercialize new drugs cannot be predicted with
accuracy.  Moreover,  potential  products  that appear to be  promising at early
stages of development  may never reach the market for a number of reasons.  Such
reasons  include the  possibilities  that  potential  products  are found during
preclinical  testing or clinical  trials to be  ineffective  or to cause harmful
side effects,  that they fail to receive necessary  regulatory  approvals,  that
they are difficult or  uneconomical  to manufacture on a large scale,  that they
fail  to  achieve   market   acceptance   or  that  they  are   precluded   from
commercialization  by  proprietary  rights  of third  parties.  There  can be no
assurance  that the  Company's  approach to drug  discovery,  its  research  and
development  efforts or the efforts of Lilly, Merck,  Novartis,  Warner-Lambert,
Grunenthal or Glaxo,  or any future  collaborative  partner or other licensee of
the Company,  will result in the development of any drugs, or that any drugs, if
successfully  developed,  will be proven to be safe and  effective  in  clinical
trials, receive required regulatory approvals,  be capable of being manufactured
in commercial quantities at reasonable costs or be successfully  commercialized.
Product   development  of  new   pharmaceuticals   is  highly   uncertain,   and
unanticipated developments,  including clinical or regulatory delays, unexpected
adverse  effects  and  inadequate  therapeutic  efficacy,  would slow or prevent
product  development  efforts of the Company and its collaborative  partners and
other licensees and have a material adverse effect on the Company's operations.


Dependence on Collaborative Partners and Licensees for Development,
  Regulatory Approvals, Manufacturing, Marketing and Other Resources

         A key  element  of  the  Company's  business  strategy  is to  leverage
resources  by  entering  into  collaborative  and  licensing  arrangements  with
pharmaceutical  companies.  Under the Company's  agreements  with Lilly,  Merck,
Novartis and Warner-Lambert,  the Company's collaborative partners and licensees
are each responsible for conducting  preclinical  testing and clinical trials of
compounds  developed  through  the use of the  Company's  technology,  obtaining
regulatory  approvals and manufacturing and commercializing any resulting drugs.
Under the Grunenthal Agreement, Grunenthal is responsible for conducting certain
preclinical  testing and clinical trials of compounds  developed through the use
of the Company's technology.  The Company has no involvement in the research and
development  activities  of Glaxo under the Glaxo  Agreement.  As a result,  the
Company's  receipt  of  revenues  (whether  in  the  form  of  drug  development
milestones,  royalties  on sales or net  sales  proceeds)  in  respect  of drugs
resulting from its  collaborative  and licensing  arrangements is dependent upon
the activities of its collaborative partners and other licensees. The amount and
timing of resources dedicated by the Company's  collaborative partners and other
licensees to the development of drugs that would be subject to royalties payable
to the Company are not within the Company's control.  Moreover,  there can be no
assurance that the interests of the Company will continue to coincide with those
of its  collaborative  partners  or  other  licensees,  that  one or more of the
Company's   collaborative   partners  or  other   licensees   will  not  develop
independently  or with third  parties drugs that could compete with drugs of the
types covered by their arrangements with the Company, or that disagreements over
rights or technology or other proprietary interests will not occur.

         If any of the  Company's  collaborative  partners  or  other  licensees
breaches its agreement with the Company,  or fails to devote adequate  resources
to or conduct in a timely manner its collaborative or licensed  activities,  the
related  research  programs or the  development  and  commercialization  of drug
candidates subject to such arrangement could be materially  adversely  affected.
There can be no assurance that the Company's

                                       41

<PAGE>



collaborative or licensing  arrangements will be successful.  Further, there can
be no  assurance  that  the  Company  will  be  able to  enter  into  acceptable
collaborative or licensing  arrangements with other pharmaceutical  companies in
the future, or that, if negotiated, such arrangements will be successful.


History of Operating Losses and Accumulated Deficit

         The  Company  has  incurred  significant  operating  losses  since  its
inception  in January  1987.  At December 31, 1998,  the  Company's  accumulated
deficit was $35,809,000. Losses have resulted principally from costs incurred in
connection  with the  Company's  research and  development  activities  and from
general and administrative costs associated with the Company's  operations.  The
Company expects to continue to incur substantial  operating losses at least over
the next several years and expects losses to increase as research  funding under
its  collaborative  arrangements  diminish.  As of December 31,  1998,  the only
revenues generated by the Company had resulted from payments under collaborative
and license  agreements,  and  government  grants  under the SBIR program of the
National Institutes of Health. The Company's  revenues,  expenses and losses may
fluctuate from quarter to quarter and year to year.  Research payments under the
Novartis  Agreements  expired in 1998,  and  research  payments  under the Merck
Agreement  expired in February  1999. In addition,  research  payments under the
Lilly  Agreement  are  scheduled  to expire in July 1999,  unless  the  research
program is extended by mutual  agreement  of the Company and Lilly.  The Company
anticipates that there will initially be little,  if any,  biological  knowledge
regarding  many of its future gene  discoveries  and, as a result,  it will have
fewer  opportunities to enter into  collaborative  arrangements  focused on such
discoveries.  The Company does not expect to achieve  revenues or royalties from
sales of drugs for a number of years,  if at all.  The Company  will not achieve
revenues  or  royalties  from drug sales  unless it or one of its  collaborative
partners or other licensees  successfully completes clinical trials with respect
to a drug candidate,  obtains  regulatory  approvals for that drug candidate and
commercializes  the resulting drug.  Failure to achieve  significant  revenue or
profitable  operations could impair the Company's ability to sustain  operations
and there can be no assurance  that the Company  will ever  achieve  significant
revenues or profitable operations.


Future Capital Needs; Uncertainty of Additional Funding

         The operation of the Company's  business requires  substantial  capital
resources  and such  requirements  are likely to  increase  in the  future.  The
Company's future financial  requirements will depend on many factors,  including
the continued progress of its research and development programs,  the timing and
results of  preclinical  testing  and  clinical  trials,  if any,  of its or its
collaborative  partners'  or other  licensees'  drug  candidates,  the timing of
regulatory approvals, if any, technological  advances,  determinations as to the
commercial  potential of its or its collaborative  partners' or other licensees'
proposed products and the status of competitive products.  The Company's capital
requirements will also depend on the Company's ability to establish and maintain
collaborative  or licensing  arrangements  with others and on whether its future
collaborative   partners  provide  research  funding  to  the  Company  and  are
responsible for all development  activities,  preclinical testing and regulatory
approvals and, if such approvals are obtained,  the  manufacturing and marketing
of products. In addition,  such capital requirements will depend on the time and
expense  associated  with filing and, if  necessary,  prosecuting  and enforcing
patent claims.

         The Company  entered into the  Grunenthal  Agreement  in January  1998.
Under this  agreement,  the Company  will  retain  certain  ownership  rights to
products that result from the  collaboration.  In addition,  the Company will be
significantly involved in the development of any such potential products but may
also be required to  contribute  substantial  financial  resources  towards such
development. Accordingly, the cost to the

                                       42

<PAGE>



Company of this arrangement may be significantly  greater than the cost to it of
participating in a royalty-based collaboration.

         No assurance can be given that the Company's  existing cash on hand and
marketable  securities  and funds it will receive  under its  collaborative  and
license  agreements,  together with interest  income,  will be  sufficient.  The
Company expects that it will, in the future,  seek to raise  additional  funding
from other sources,  including other collaborative  partners and licensees,  and
through  public  or  private  financings,  including  sales  of  equity  or debt
securities.  Any such  collaborative  or licensing  arrangement  could result in
limitations on the Company's  ability to control the research and development of
potential drugs and the commercialization of resulting drugs, if any, as well as
its profits therefrom. Any such equity financing could result in dilution to the
Company's then existing stockholders.  There can be no assurance that additional
funds will be  available on  favorable  terms or at all, or that such funds,  if
raised,  would be  sufficient  to permit the  Company to continue to conduct its
operations.  If adequate funds are not available, the Company may be required to
curtail significantly or eliminate one or more of its receptor or drug discovery
programs.


Uncertainties Related to Clinical Trials

         Before obtaining required regulatory  approvals for the commercial sale
of each product under  development,  the Company or its  collaborators and other
licensees must demonstrate  through preclinical studies and clinical trials that
such product is safe and efficacious for use. The results of preclinical studies
and initial clinical trials are not necessarily  predictive of results that will
be obtained from large-scale clinical trials, and there can be no assurance that
clinical trials of any product under development will demonstrate the safety and
efficacy of such product or will result in a marketable product.  The safety and
efficacy  of a  therapeutic  product  under  development  by the  Company or its
collaborative  partners or other  licensees  must be supported by extensive data
from clinical trials. A number of companies have suffered  significant  setbacks
in advanced clinical trials,  despite  promising results in earlier trials.  The
failure to demonstrate  adequately the safety and efficacy of a therapeutic drug
under development would delay or prevent regulatory  approval of the product and
could have a material  adverse  effect on the Company.  In addition,  the FDA or
other Regulatory  Agency may require  additional  clinical  trials,  which could
result in increased costs and significant development delays.

         The rate of  completion  of  clinical  trials of the  Company's  or its
collaborative  partners' and other licensees'  products is dependent upon, among
other  factors,  obtaining  adequate  clinical  supplies and the rate of patient
accrual.  Patient  accrual is a function of many factors,  including the size of
the patient  population,  the  proximity  of patients to clinical  sites and the
eligibility  criteria for the trial.  Delays in planned  patient  enrollment  in
clinical  trials may result in increased  costs,  program delays or both,  which
could have a material adverse effect on the Company. In addition,  the Company's
collaborative  partners and other licensees  generally have the right to control
the planning and execution of product  development  and clinical  programs,  and
there can be no assurance  that such  partners and  licensees  will conduct such
programs in accordance  with  schedules  that are  satisfactory  to the Company.
There can be no assurance that, if clinical trials are completed, the Company or
its collaborative  partners and other licensees will submit NDAs with respect to
any  potential  products  or that  any such  application  will be  reviewed  and
approved by the FDA in a timely manner, if at all.


Lack of Manufacturing Experience; Reliance on Contract Manufacturers

         The Company currently has no manufacturing facilities and relies on its
collaborative partners and other licensees or other manufacturers to produce its
compounds for research and development, preclinical and

                                       43

<PAGE>



clinical  purposes.  The  products  under  development  by the  Company  and its
collaborative  partners and other  licensees have never been  manufactured  on a
commercial  scale and  there  can be no  assurance  that  such  products  can be
manufactured  at a cost or in  quantities  necessary  to make them  commercially
viable.  If the Company were unable to contract  for a sufficient  supply of its
compounds on acceptable  terms, or if it should encounter delays or difficulties
in its  relationships  with  manufacturers,  any preclinical or clinical testing
schedule of the Company would be delayed,  resulting in delay in the  submission
of products for regulatory  approval or the market  introduction  and subsequent
sales of such  products,  which  could  have a  material  adverse  effect on the
Company. Moreover, manufacturers that the Company may use must adhere to current
GMP regulations  enforced by the FDA through its facilities  inspection program.
If  these  facilities  cannot  pass a  pre-approval  plant  inspection,  the FDA
pre-market approval of the products will not be granted.


Lack of Sales and Marketing Capability

         The creation of infrastructure to commercialize pharmaceutical products
is a difficult,  expensive and time-consuming process. Synaptic currently has no
sales or marketing  capability.  To market  directly any product it may develop,
the Company  will need to establish a marketing  and sales force with  technical
expertise and  distribution  capability  or contract  with other  pharmaceutical
and/or health care companies with distribution  systems and direct sales forces.
There can be no assurance  that the Company will be able to establish  direct or
indirect sales and distribution  capabilities or be successful in gaining market
acceptance  for licensing  arrangements.  To the extent that the Company  enters
into  co-promotion  or  licensing  arrangements,  any  revenues  received by the
Company will be dependent on the efforts of third  parties,  and there can be no
assurance that any such efforts will be successful.


Dependence on Key Personnel

         The Company is highly dependent on its management and scientific staff.
Loss of the services of any key  individual  could have an adverse effect on the
Company.  The Company believes that its future success will depend,  in part, on
its  ability  to attract  and retain  highly  talented  managerial,  scientific,
software and bioinformatics personnel and consultants. The Company faces intense
competition  for  such  personnel   from,   among  others,   biotechnology   and
pharmaceutical  companies,  as well as academic and other research institutions.
There  can be no  assurance  that it will be able  to  attract  and  retain  the
personnel it requires on  acceptable  terms.  Failure to attract and retain such
personnel could have a material adverse effect on the Company.


External Environment

         Over the past several years, there has been a significant  reduction in
the number of investors who are willing to commit  capital to the  biotechnology
industry.  With over 300 public  biotechnology  companies and over 1,000 private
biotechnology  companies,  the lack of capital is severely impairing the ability
of many of these  companies  to carry out  their  research.  Additionally,  many
pharmaceutical  companies  are now  routinely  performing  many of the  types of
research and services that have  historically  been  performed by  biotechnology
companies. As a consequence,  many pharmaceutical  companies are less interested
than in the past both in engaging in collaborations with biotechnology companies
in a number  of areas and in  providing  them with  research  funding  and other
sources of revenue.


                                       44

<PAGE>



         Over time, the Company could be materially adversely affected by a lack
of available capital and/or a lack of interest on the part of the pharmaceutical
industry in its  services or products.  This  unfavorable  external  environment
could  result in the  Company's  inability  to complete  certain of its research
projects  and/or  in the need for the  Company  to  downsize  until it begins to
receive royalty income pursuant to outstanding licensing arrangements.


Item 7A.  Quantitative and Qualitative Disclosures About Market Risk

         Quantitative  and  qualitative  disclosures  about  market  risk (i.e.,
interest rate risk) are included in Item 7 of this Report.

                                       45

<PAGE>







                      (This page intentionally left blank.)














                                       46

<PAGE>



Item 8.       Financial Statements



                       SYNAPTIC PHARMACEUTICAL CORPORATION

                          INDEX TO FINANCIAL STATEMENTS





                                                                            Page
                                                                            ----
Report of Independent Auditors...............................................48

Balance Sheets at December 31, 1998 and 1997.................................49

Statements of Operations and Comprehensive Income (Loss)
  for the years ended December 31, 1998, 1997 and 1996.......................50

Statements of Stockholders' Equity for the years ended 
  December 31, 1998, 1997 and 1996...........................................51

Statements of Cash Flows for the years ended
  December 31, 1998, 1997 and 1996...........................................53

Notes to Financial Statements................................................54












                                       47

<PAGE>









                         REPORT OF INDEPENDENT AUDITORS




The Board of Directors and Shareholders
SYNAPTIC PHARMACEUTICAL CORPORATION

         We  have   audited  the   accompanying   balance   sheets  of  Synaptic
Pharmaceutical  Corporation  as of December  31, 1998 and 1997,  and the related
statements of operations and comprehensive  income (loss),  stockholders' equity
and cash flows for each of the three  years in the  period  ended  December  31,
1998.  These  financial  statements  are  the  responsibility  of the  Company's
management.  Our  responsibility  is to express  an  opinion on these  financial
statements based on our audits.

         We conducted our audits in accordance with generally  accepted auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

         In our opinion,  the  financial  statements  referred to above  present
fairly,  in  all  material   respects,   the  financial   position  of  Synaptic
Pharmaceutical Corporation at December 31, 1998 and 1997, and the results of its
operations  and its cash flows for each of the three  years in the period  ended
December 31, 1998, in conformity with generally accepted accounting principles.



                                           ERNST & YOUNG LLP


Hackensack, New Jersey
 January 29, 1999,
 except for Note 11 as
 to which the date is
 February 4, 1999









                                       48

<PAGE>



                       SYNAPTIC PHARMACEUTICAL CORPORATION

                                 BALANCE SHEETS

(in thousands, except share information)


December 31, 1998 and 1997

Assets                                                   1998         1997
- ------------------------------------------------------------------------------
Current assets:
    Cash and cash equivalents                          $ 16,590    $ 23,113
    Restricted cash                                         600         600
    Marketable securities--current maturities             7,133      10,010
    Revenue receivable under license agreement               --          40
    Other current assets                                  1,064         674
- ------------------------------------------------------------------------------
        Total current assets                             25,387      34,437

Property and equipment, net                               5,733       4,682

Marketable securities                                    32,655      28,977

Patent and patent application costs,
  net of accumulated amortization
    (1998--$1,454; 1997--$1,069)                            921       1,306
- ------------------------------------------------------------------------------
                                                       $ 64,696    $ 69,402
==============================================================================


Liabilities and Stockholders' Equity
- ------------------------------------------------------------------------------
 Current liabilities:
    Accounts payable                                   $    966    $    811
    Accrued liabilities                                     645         547
    Accrued compensation                                    326         340
    Deferred revenue                                         83          --
- ------------------------------------------------------------------------------
        Total current liabilities                         2,020       1,698

Stockholders' equity:
  Preferred Stock, $.01 par value;
   authorized--1,000,000 shares                              --          --
  Common Stock, $.01 par value; 
   authorized--25,000,000 shares;
   issued and outstanding--10,711,374 shares in 1998
   and 10,526,585 shares in 1997                            107         105
  Additional paid-in capital                             98,516      97,049
  Accumulated other comprehensive income--net
   unrealized (losses) gains on securities                  (77)         26
  Deferred compensation                                     (61)       (160)
  Accumulated deficit                                   (35,809)    (29,316)
- ------------------------------------------------------------------------------
        Total stockholders' equity                       62,676      67,704
- ------------------------------------------------------------------------------
                                                       $ 64,696    $ 69,402
==============================================================================



                       See notes to financial statements.

                                       49

<PAGE>



                       SYNAPTIC PHARMACEUTICAL CORPORATION

            STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)


(in thousands, except share and per share information)


For the Years Ended December 31, 1998, 1997 and 1996


                                          1998          1997         1996
- --------------------------------------------------------------------------

Revenues:
    Contract revenue                   $ 7,202       $ 9,785       $ 6,943
    License revenue                      2,000            --         2,000
    Grant revenue                          150           522           538
- --------------------------------------------------------------------------
        Total revenues                   9,352        10,307         9,481

Expenses:
    Research and development            15,274        13,781        11,337
    General and administrative           4,302         4,072         2,982
- --------------------------------------------------------------------------
        Total expenses                  19,576        17,853        14,319
- --------------------------------------------------------------------------
Loss from operations                   (10,224)       (7,546)       (4,838)

Other income, net:
    Interest income                      3,603         2,205         2,013
    Interest expense                        --            (5)          (20)
    Gain on sale of securities             128            --           212
- --------------------------------------------------------------------------
Other income, net                        3,731         2,200         2,205
- --------------------------------------------------------------------------

Net loss                               $(6,493)      $(5,346)$      (2,633)
===========================================================================


Comprehensive loss:

Net loss                               $(6,493)      $(5,346)      $(2,633)

Unrealized (losses) gains
 arising during period                     (82)           27            15
Less: reclassification adjustment
 for gains included in net income          (21)           --          (212)
- ---------------------------------------------------------------------------

Comprehensive loss                     $(6,596)      $(5,319)      $(2,830)
===========================================================================


Basic and diluted net loss per share   $ (0.61)      $ (0.66)      $ (0.35)
===========================================================================

Shares used in computation of
  net loss per share                10,684,892     8,129,260     7,577,610
===========================================================================


                       See notes to financial statements.

                                       50

<PAGE>
                       SYNAPTIC PHARMACEUTICAL CORPORATION

                      STATEMENTS OF STOCKHOLDERS' EQUITY

(in thousands, except share information)

<TABLE>

<S>                            <C>        <C>     <C>          <C>        <C>       <C>        <C>            <C>      <C> 

                                                                  Net
                                                               Unrealized              Notes
                                                                 Gains              Receivable                           Total
                                                    Additional  (Losses)   Deferred   From         Accumu-               Stock-
                                   Common Stock      Paid-In      on        Compen-   Stock-        lated     Treasury   holders'
                                 Shares   Amount     Capital   Securities    sation   holders      Deficit     Stock      Equity
                                 ------   ------     -------   ----------    ------   -------      -------     -----   ------------
Balance at December 31, 1996   7,326,368  $  73      $59,952       $196     $ (208)   $  (6)     $ (21,337)    $ (2)   $   38,668
Purchase of 1,190 shares of
 treasury stock at cost               --     --          --          --         --       --             --       (1)           (1)
Payments received on notes
 receivable from stockholders         --     --          --          --         --        6             --       --             6
Deferred compensation related
 to stock incentive plan              --     --         388          --       (388)      --             --       --            --
Forfeiture of deferred
 compensation related to
 stock incentive plan                 --     --        (121)         --        121       --             --       --            --
Amortization of deferred
 compensation                         --     --          --          --        179       --             --       --           179
Issuance of 48,126, shares
 of common stock pursuant
 to exercise of stock options     46,061      1          81          --         --       --             --        3            85
Issuance of 48,114 shares of
 common stock pursuant to
 exercise of stock warants        48,114     --         457          --         --       --             --       --           457
Issuance of 213,000 shares
 of common stock pursuant to
 overallotment option            213,000      2       2,474          --         --       --             --       --          2,476
Adjustment to reflect net
 unrealized loss on
 securities                           --     --          --        (197)        --       --             --       --          (197)
Net loss for the year ended
 December 31, 1996                    --     --          --          --         --       --         (2,633)      --        (2,633)
                               ---------  -------   --------  ----------  ---------  -------   ------------    -----  ------------
Balance at December 31, 1996   7,633,543     76       63,231          (1)      (296)     --         (23,970)     --        39,040

Purchase of 438 shares of
 treasury Stock at cost               --     --           --          --         --       --             --       (1)          (1)
Forfeiture of deferred        
 compensation related to      
 stock incentive plan                 --     --          (12)         --         12       --             --       --           --
Amortization of Deferred      
 compensation                         --     --           --          --        124       --             --       --          124
Issuance of 18,480, shares    
 of common stock pursuant
 to exercise of stock options     18,042      1           36          --         --       --             --        1           38
Issuance of 2,875,000 share
 of common stock in public
 offering                      2,875,000     28       33,794          --         --       --             --       --       33,822
Adjustment to reflect net
 unrealized loss on
 securities                           --     --          --          27          --       --             --       --           27
Net loss for the year ended
 December 31, 1997                    --     --          --          --          --       --         (5,346)      --       (5,346)
                              ----------  -------   --------  ----------  ---------  -------   ------------    -----  ------------
Balance at December 31, 1997  10,526,585  $  105    $ 97,049  $      26   $   (160)  $   --     $   (29,316)   $  --  $    67,704
                              ==========  =======   ========  ==========  =========  =======   =============   =====  ============

</TABLE>

                       See notes to financial statements.

                                       51

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION

                STATEMENTS OF STOCKHOLDERS' EQUITY -- (Continued)

(in thousands, except share information)

<TABLE>

<S>                            <C>        <C>     <C>          <C>        <C>       <C>        <C>            <C>      <C> 

                                                                  Net
                                                               Unrealized              Notes
                                                                 Gains              Receivable                           Total
                                                    Additional  (Losses)   Deferred   From         Accumu-               Stock-
                                   Common Stock      Paid-In      on        Compen-   Stock-        lated     Treasury   holders'
                                 Shares   Amount     Capital   Securities    sation   holders      Deficit     Stock      Equity
                                 ------   ------     -------   ----------    ------   -------      -------     -----   ------------
Balance at December 31, 1997 10,526,585  $  105    $ 97,049  $      26   $   (160)  $   --     $   (29,316)   $  --  $     67,704
Purchase of 375 shares of
 Treasury Stock at cost              --     --           --          --         --       --             --       (1)           (1)
Forfeiture of deferred        
 compensation related to      
 stock incentive plan                --     --          (20)         --         20       --             --       --            --
Amortization of deferred      
 compensation                        --     --           --          --         79       --             --       --            79
Issuance of 47,516, shares    
 of common stock pursuant
 to exercise of stock options    47,141      1          127          --         --       --             --        1           129 
Issuance of 137,648 shares of
 common stock pursuant to
 exercise of stock warrants     137,648      1        1,307          --         --       --             --       --         1,308
Adjustment to reflect net
 unrealized gain on
 securities                          --     --          --        (103)         --       --             --       --          (103)
Adjustment to reflect
 recognition of short-swing
 profits realized on sale of
 stock by stockholder                --     --          53          --          --       --             --       --            53
Net loss for the year ended
 December 31, 1998                   --     --          --          --          --       --         (6,493)      --        (6,493)
                             ----------  -------   --------  ----------  ---------  -------   ------------    -----  ------------
Balance at December 31, 1998 10,711,374  $  107    $ 98,516  $     (77)   $   (61)  $   --     $   (35,809)   $  --  $     62,676
                             ==========  =======   ========  ==========  =========  =======   =============   =====  ============

</TABLE>

                       See notes to financial statements.

                                       52

<PAGE>



                       SYNAPTIC PHARMACEUTICAL CORPORATION

                            STATEMENTS OF CASH FLOWS
(in thousands)


For the Years Ended December 31, 1998, 1997 and 1996

                                                  1998       1997       1996
- --------------------------------------------------------------------------------
Operating activities:
Net loss                                       $ (6,493)  $ (5,346)  $  (2,633)
Adjustments to reconcile net loss to net cash
  (used in) provided by operating activities:
    Depreciation and patent amortization          1,505      1,209         960
    Amortization of premiums/(discounts) on
     securities                                     226       (123)       (158)
    Amortization of deferred compensation            79        124         179
    Gain on sales of securities                    (128)        --        (212)
Changes in operating assets and liabilities:
    Increase in other assets                       (390)      (816)       (107)
    Increase in accounts payable, accrued
     liabilities and accrued compensation           239        490          44
    Decrease (increase) in license agreement
     revenue receivable                              40        152         (62)
    Increase (decrease) in deferred revenue          83         --        (821)
- --------------------------------------------------------------------------------
Net cash (used in) operating activities          (4,839)    (4,310)     (2,810)

Investing activities:
    Proceeds from sale or maturity of
     investments                                 70,797     27,666      10,710
    Purchases of investments                    (71,799)   (35,696)    (32,238)
    Purchases of property and equipment          (2,171)    (2,888)     (1,106)
    Increase in patent and patent application
     costs                                           --         --        (518)
- --------------------------------------------------------------------------------
Net cash (used in) investing activities          (3,173)   (10,918)    (23,152)

Financing activities:
    Issuance of common stock, net of
     repurchases                                  1,436     33,859       3,016
    Short-swing profits realized on sale of
     stock by stockholder                            53         --          --
    Payments on capital lease                        --       (107)       (152)
    Payments on notes receivable from
     stockholders                                    --         --           6
- --------------------------------------------------------------------------------
Net cash provided by financing activities         1,489     33,752       2,870
- --------------------------------------------------------------------------------
Net (decrease) increase in cash and cash
    equivalents                                  (6,523)    18,524     (23,092)
Cash and cash equivalents at beginning
    of period                                    23,113      4,589      27,681
- --------------------------------------------------------------------------------
Cash and cash equivalents at end of period     $ 16,590   $ 23,113   $   4,589
================================================================================


Supplemental cash flow disclosure:
    Cash paid for interest                     $     --   $      5   $      20
================================================================================


                       See notes to financial statements.

                                       53

<PAGE>



                       SYNAPTIC PHARMACEUTICAL CORPORATION
                          NOTES TO FINANCIAL STATEMENTS
                                December 31, 1998


Note 1 -- Summary of Significant Accounting Policies

        Organization.  Synaptic  Pharmaceutical  Corporation  (the "Company") is
engaged in the development of a broad platform of enabling  technology  which it
calls "human receptor-targeted drug design technology". The Company is utilizing
this  technology  to discover  and clone the genes that code for human  receptor
subtypes that may be associated with specific  disorders and to design compounds
that can  potentially  be developed as drugs for treating these  disorders.  The
Company makes available this technology to its collaborative  partners and other
licensees through  collaborative and licensing agreements from which the Company
derives the principal portion of its revenue.

        Basic and  Diluted  Net Loss Per Share.  Net loss per share is  computed
using the  weighted  average  number of shares of common stock  outstanding.  In
1997,  the  Financial  Accounting  Standards  Board  issued  Statement  No. 128,
"Earnings per Share."  Statement No. 128 replaced the calculation of primary and
fully  diluted  earnings  per share with basic and diluted  earnings  per share.
Since the Company has a history of  operating  losses,  the  adoption of the new
standard had no effect on the current and prior year net loss per share amounts.
Also, as a result of the Company's operating losses and the anti-dilutive effect
from  stock  options  and  warrants,  such  instruments  are  excluded  from the
computation of basic and diluted net loss per share.

        Revenue Recognition. Research funding revenue is recognized ratably over
the  period of the  collaboration  to which it  relates.  Payments  received  in
advance under the related  contracts are recorded as deferred  revenue until the
research is performed.  Research  milestone payment revenue is recognized at the
time the related  research  milestone is achieved.  License  revenue  represents
non-refundable  payments for licenses to the Company's  technology and/or patent
rights. Non-refundable payments for licenses are recognized at such time as they
are received or, if earlier,  become  guaranteed.  Government grant receipts are
recorded as revenue in the period in which the related research is performed.

        Cash Equivalents.  Cash equivalents consist of highly liquid investments
with a  maturity  of three  months  or less  when  purchased.  Included  in cash
equivalents  at December  31,  1998,  is  approximately  $16,393,000  related to
investments  in money market funds.  At December 31, 1997,  this amount  totaled
$23,109,000.

        Marketable  Securities.  All of the Company's marketable  securities are
classified as available-for-sale  securities and are carried at fair value, with
the  unrealized   gains  and  losses   reported  as  a  separate   component  of
stockholders'  equity.  The cost of debt securities is adjusted for amortization
of premiums  and  accretion  of discounts  to  maturity.  Such  amortization  is
included in interest  income.  Realized  gains and losses and  declines in value
judged to be other than  temporary,  if any, are included in other  income.  The
cost  of  securities  sold  is  based  on the  specific  identification  method.
Investments  held as of December 31, 1998 consist  primarily of U.S.  Government
and  Federal   Agency   obligations,   U.S.   corporate   debt   securities  and
mortgage-backed securities. The maturities range from February 22, 1999, through
November 17, 2003.

        The  Company has  established  guidelines  relative to  diversification,
credit ratings and maturities to maintain  safety and liquidity.  The guidelines
are periodically reviewed and modified to take advantage of trends in yields and
interest rates.


                                       54

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1998


        Property  and  Equipment.  Property  and  equipment  are stated at cost.
Depreciation  is computed  using the  straight-line  method  over the  estimated
useful lives of the assets. Scientific equipment, office equipment and furniture
and fixtures are depreciated over a life of 7 years.  Leasehold improvements are
depreciated  principally over the life of the facility lease, which is currently
17 years (see Note 9).  Software is depreciated  over a life of 3 years.  Assets
acquired under capital lease  arrangements were depreciated over the life of the
related leases.

        Patents.  Prior to October 1, 1996, patent and patent  application costs
were capitalized and amortized over 7 years or the estimated life of the patent,
if less, using the  straight-line  method.  Capitalized costs through October 1,
1996  will  continue  to be  amortized  over  the  remaining  portions  of their
seven-year lives. Effective October 1, 1996, patent and patent application costs
are  expensed  as  incurred.  The  effect in 1996 of this  change in  accounting
estimate was to increase expenses and net loss by $171,000,  or $0.02 per share.
The  Company   periodically   reviews   capitalized   costs  to  assess  ongoing
recoverability.

        Accrued Liabilities.  Included  in accrued  liabilities  at December 31,
1998  and 1997 are  accrued  professional  fees totaling  $506,000 and $345,000,
respectively.

        Stock-Based Compensation.  The Company  has elected to follow Accounting
Principles  Board  Opinion No. 25,  "Accounting  for Stock Issued to  Employees"
("APB No. 25"), in accounting for its employee stock options.  Under APB No. 25,
compensation  expense is recognized  only when the exercise  price of options is
below  the  market  price of the  underlying  stock on the date of  grant.  Such
expense is recognized ratably over the vesting period.

        Use of Estimates.  The preparation of financial statements in conformity
with  generally  accepted  accounting  principles  requires  management  to make
estimates  and  assumptions  that  affect  the  reported  amounts  of assets and
liabilities  and disclosure of contingent  assets and liabilities at the date of
the financial statements. Estimates also affect the reported amounts of revenues
and expenses during the reporting period. Actual results could differ from these
estimates.

        Comprehensive  Income  (Loss).  In June 1997,  the Financial  Accounting
Standards  Board issued  Statement of Financial  Accounting  Standards  No. 130,
"Reporting   Comprehensive  Income."  This  pronouncement,   which  was  adopted
effective  January  1,  1998,  requires  the  presentation  of  a  statement  of
comprehensive  income.  Comprehensive  income (loss) is defined as the change in
equity of a business  enterprise during a period resulting from transactions and
other events and circumstances from nonowner sources. Comprehensive loss for the
Company,  in  addition  to net loss,  includes  unrealized  gains and  losses on
marketable securities held for sale, currently recorded in stockholders' equity.

                                       55

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1998


Note 2 -- Marketable Securities

        The  following  is  a  summary  of  all  of  the  Company's   marketable
securities.  All  of  these  securities  are  classified  as  available-for-sale
securities.  Determination  of  estimated  fair value is based on quoted  market
prices:


                                              Gross         Gross
                                            Unrealized   Unrealized  Estimated
                                 Cost          Gains      (Losses)   Fair Value
- --------------------------------------------------------------------------------
December 31, 1998:
U.S. Treasury obligations and
 obligations of U.S.
 government agencies            $12,998,000       --    $(43,000)   $12,955,000
U.S. corporate debt securities   25,851,000  $41,000      (79,000)   25,813,000
Mortgage-backed securities        1,016,000    4,000           --     1,020,000
- --------------------------------------------------------------------------------
                                $39,865,000  $45,000    $(122,000)  $39,788,000
================================================================================
December 31, 1997:
U.S. Treasury obligations and
 obligations of U.S.
 government agencies            $21,299,000       --    $(22,000)   $21,277,000
U.S. corporate debt securities   15,966,000   57,000      (11,000)   16,012,000
Mortgage-backed securities        1,696,000    2,000           --     1,698,000
- --------------------------------------------------------------------------------
                                $38,961,000  $59,000    $(33,000)   $38,987,000
================================================================================


        The gross  realized gains on sale of  available-for-sale  securities for
the years  ending  December 31, 1998,  1997 and 1996  totaled  $128,000,  $0 and
$212,000,  respectively,  and the gross  realized  losses totaled $0, $0 and $0,
respectively.   The   net   adjustment   to   unrealized   (losses)   gains   on
available-for-sale  securities included as a separate component of stockholders'
equity totaled $(103,000) in 1998, $27,000 in 1997 and $(197,000) in 1996.

                                       56

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1998


Note 3 -- Collaborative and Licensing Arrangements

        At December 31,  1998,  the Company was engaged in  collaborations  with
three pharmaceutical companies. In addition to these collaborative arrangements,
the company has granted  licenses to certain of its technology and patent rights
to three other pharmaceutical  companies.  Details of these arrangements are set
forth below:

        Eli Lilly and Company.  The Company and Eli Lilly and Company  ("Lilly")
are parties to a collaborative  and licensing  agreement under which the Company
granted Lilly an exclusive license to use all but two of the Company's serotonin
drug  discovery  systems to promote the  discovery and  development  of receptor
subtype-selective  drugs  for  the  treatment  of  serotonin-related  disorders.
Through  1998,  Lilly  provided  funding to the  Company to support a  specified
number  of the  Company's  scientists  who  conducted  research  as  part of the
collaboration.

        Lilly is required to pay  royalties on sales of any  products  developed
through the use of the  Company's  technology  and is required to make  payments
upon the achievement of certain milestones.

        During  1998,  1997  and  1996,  the  Company   recognized   $4,659,000,
$4,748,000,  and  $2,011,000,  respectively,  in revenue  under this  agreement.
Revenues that have been recognized are not subject to repayment.

        Merck & Co.,  Inc.  The  Company  and Merck & Co.,  Inc.  ("Merck")  are
parties to a  collaborative  and  licensing  agreement  to identify  and develop
alpha-1a antagonists,  principally for the treatment of BPH. The Company granted
Merck  certain  licenses  and  know-how  to develop and  commercialize  alpha-1a
antagonists. Under the terms of the agreement, Merck is providing funding to the
Company to support a specified  number of the Company's  scientists  who conduct
research as part of the  collaboration.  Under the terms of the  agreement,  the
collaboration  and associated  research  funding is scheduled to end on February
28, 1999.

        Merck is  required  to pay  royalties  on certain  product  sales and is
required to make payments upon the achievement of certain milestones.

        During 1998, 1997 and 1996, the Company recognized $482,000,  $1,631,000
and $3,613,000,  respectively,  in revenue under this  agreement.  Revenues that
have been recognized are not subject to repayment.

        At December  31, 1998,  the Company had received  $83,000 in advance for
work to be  performed in January and February  1999.  At December 31, 1997,  the
Company  had  a  receivable  amounting  to  $40,000,  for  certain  reimbursable
expenditures.

        Novartis Pharma AG. The Company and Novartis Pharma AG ("Novartis")  are
parties to two  collaborative  and licensing  agreements under which the Company
granted   Novartis  an  exclusive   worldwide   license  to  use  the  Company's
neuropeptide Y technology to develop,  manufacture  and sell compounds that work
through neuropeptide Y receptor subtypes for the treatment of obesity and eating
disorders.  Until August 4, 1998,  Novartis  provided  funding to the Company to
support a specified number of the Company's scientists

                                       57

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1998


who  conducted  research  as part of the  collaboration.  Under the terms of the
agreements, the collaboration and associated research funding ended on August 4,
1998.

        Novartis is required to pay  royalties on certain  product  sales and is
required to make payments upon the achievement of certain milestones.

        During  1998,  1997  and  1996,  the  Company   recognized   $2,041,000,
$3,406,000  and  $3,319,000,  respectively,  in revenue  under  this  agreement.
Revenues that have been recognized are not subject to repayment.

        At December 31, 1998,  Novartis  held  695,715  shares of the  Company's
common stock which represents 6.5% of the outstanding shares of the Company.

        Warner-Lambert   Company.   The  Company  and   Warner-Lambert   Company
("Warner-Lambert")  are  parties  to a  collaborative  and  licensing  agreement
pursuant to which they are  collaborating  to identify and develop galanin drugs
for a variety of therapeutic applications.  Warner-Lambert received an exclusive
worldwide  license to use the Company's  galanin receptor subtype drug discovery
systems  for  the  development  and   commercialization   of  galanin   receptor
subtype-selective drugs for all therapeutic  applications.  To date, the Company
has not recognized any revenue under this collaboration.

        Grunenthal  GmbH. The Company and  Grunenthal  GmbH  ("Grunenthal")  are
parties to a collaborative  and licensing  agreement  pursuant to which they are
collaborating  to discover  and develop  drugs for the  treatment  of pain.  The
Company  is using its  receptor-targeted  drug  design  technology  to  identify
compounds  of interest  and  Grunenthal  is using its  expertise to evaluate the
compounds in pain model systems and conduct preclinical studies. Grunenthal will
conduct  clinical studies with promising  compounds.  The companies will each be
responsible for their own research costs and equally share the development costs
through Phase IIa clinical  trials.  The Company will retain  manufacturing  and
marketing  rights in the U.S.,  Canada  and  Mexico  and share  these  rights in
countries outside of Europe,  South and Central America where Grunenthal retains
such rights.  To date,  the Company has not  recognized  any revenue  under this
collaboration.

        Glaxo Group  Limited.  The Company and Glaxo Group Limited of the United
Kingdom  ("Glaxo") are parties to a licensing  agreement under which the Company
granted Glaxo (i) a nonexclusive  license under the Company's alpha 1 adrenergic
receptor  patents  to  develop  and  sell  alpha-1a   selective   compounds  for
therapeutic  applications other than the treatment of BPH and (ii) until May 22,
1999, a nonexclusive  license under its alpha 1 adrenergic  receptor patents and
its BPH use  patents  to develop  but not to  commercialize  alpha-1a  selective
compounds  for the  treatment  of  BPH.  During  1998,  the  Company  recognized
$2,000,000 in revenue under this  licensing  arrangement.  Revenue that has been
recognized is not subject to repayment.

        In  addition,   the  Company   granted  Glaxo  an  option  to  obtain  a
nonexclusive  license under its alpha 1 adrenergic  receptor patents and its BPH
use patents to develop and commercialize  alpha-1a  selective  compounds for the
treatment of BPH. Such option is  exercisable  by Glaxo only until May 22, 1999,
upon  the  payment  to  Synaptic  of an  additional  amount.  If the  option  is
exercised,   Glaxo  is  required  to  pay  royalties  on  any  benign  prostatic
hyperplasia  drug which reaches the market and is required to make payments upon
the achievement of certain milestones.


                                       58

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1998


Note 4 -- Property and Equipment

        Property and equipment consists of the following as of December 31, 1998
and 1997:



                                                1998               1997
- ----------------------------------------------------------------------------

Scientific equipment                       $   6,332,000   $      4,921,000
Furniture and fixtures                           188,000            188,000
Office equipment                                 514,000            454,000
Leasehold improvements                         2,003,000          1,557,000
Software                                         923,000            669,000
Equipment under capitalized leases               658,000            658,000
- ----------------------------------------------------------------------------
                                              10,618,000          8,447,000
Accumulated depreciation and amortization    (4,885,000)         (3,765,000)
- ----------------------------------------------------------------------------
                                           $   5,733,000   $      4,682,000
============================================================================


Note 5 -- Capital Leases

        The Company and a bank were  parties to a master lease  agreement  under
which the Company leased laboratory and computer  equipment with a cost basis of
$658,000.  The effective  interest rate on the leases  approximated  10.5%.  The
assets were depreciated over the related lease terms.

        Accumulated amortization on leased equipment as of December 31, 1998 and
1997 was $658,000.



                                       59

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1998


Note 6 -- Stockholders' Equity

        Common Stock. In December 1995, the Company  completed an initial public
offering  of  2,000,000  shares  of its  common  stock.  In  January  1996,  the
underwriters  of the initial  public  offering  exercised  their  over-allotment
option to purchase an additional  213,000 shares of common stock. As part of the
initial public  offering,  the then existing  convertible  redeemable  preferred
stock automatically converted into 4,928,382 shares of common stock.

        In October 1997,  the Company  completed a public  offering of 2,500,000
shares of its common stock.  In November  1997, the  underwriters  of the public
offering exercised their over-allotment option to purchase an additional 375,000
shares of common stock.

        In connection with the sale of certain convertible  redeemable preferred
stock which was  converted  into common stock upon  completion  of the Company's
initial public offering,  the placement agents of certain convertible redeemable
preferred  stock received  warrants to purchase  192,458 shares of the Company's
common  stock at an exercise  price of $9.50 per share.  In May 1996,  48,114 of
these warrants were exercised.  In January 1998,  137,648 of these warrants were
exercised and the remaining warrants expired.

        Stockholders'  Rights Plan. In November  1995,  the  Company's  Board of
Directors  approved  the  adoption of a  stockholders'  rights plan (the "Rights
Plan").  The Rights Plan provides for the  distribution of one right (a "Right")
with respect to each share of outstanding  common stock and any new issuances of
common stock.  Upon  completion of the initial public offering in December 1995,
the Board of Directors designated Series A Junior Participating  Preferred Stock
and  declared a dividend of one Right with respect to each share of common stock
outstanding. Each Right will become exercisable to purchase from the Company, at
an  exercise  price  of  $160.00,  1/1000th  of  a  share  of  Series  A  Junior
Participating  Preferred Stock or that number of shares of common stock having a
market  value  equal to two times the  exercise  price of the Right.  The Rights
generally  become  exercisable for the Series A Junior  Participating  Preferred
Stock ten days following the announcement by any person or group of an intention
to make a tender offer or exchange offer,  the consummation of which would cause
any person or group to become the owner of 15% or more of the outstanding common
stock, and generally become  exercisable for common stock ten days following the
acquisition  by any person or group of more than 15% of the  outstanding  common
stock.  The Rights will expire in the year 2005.  The Rights Plan may discourage
certain types of transactions involving an actual or potential change in control
of the Company.

        Each  1/1000th  of a share of  Series A Junior  Participating  Preferred
Stock will have one vote. Each share of Series A Junior Participating  Preferred
Stock will be entitled to a preferential  quarterly  dividend per share equal to
the larger of (i) an amount equal to any  dividend  declared on the common stock
and (ii) $.00025.  Additionally, in the event of a liquidation, each 1/1000th of
a share of the Series A Junior  Participating  Preferred Stock would be entitled
to a preferential liquidation payment equal to $0.01 plus an amount equal to the
amount that would be distributed with respect to each share of common stock.

        Preferred  Stock.  The Company is  authorized  to issue up to  1,000,000
shares of preferred  stock,  200,000 of which is  designated  as Series A Junior
Participating  and 800,000 of which is  undesignated.  The Board of Directors is
authorized to provide for the issuance of preferred stock in one or more classes
or series and to fix the number of shares constituting any such class or series,
and the voting powers, designations,

                                       60

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1998


preferences  and relative,  participating,  optional or other special rights and
qualifications,  limitations  or  restrictions  thereof,  including the dividend
rights,  dividend  rate,  terms  of  redemption,  redemption  price  or  prices,
conversion  rights and liquidation  preferences of the shares  constituting  any
class or series,  without any further vote or action by the  shareholders of the
Company.


Note 7 -- Incentive/Stock Plans

        The  Company  currently  has  three  stock  incentive  plans:  the  1996
Incentive Plan (the "1996 Plan"),  the 1988 Amended and Restated  Incentive Plan
(the "1988 Plan" and,  together with the 1996 Plan, the  "Incentive  Plans") and
the 1996 Nonemployee Director Stock Option Plan (the "Director Plan").

        The  Company  has  elected  to follow APB No. 25 in  accounting  for its
employee stock options  because,  as discussed below, the alternative fair value
accounting provided for under Financial Accounting Standards Board Statement No.
123 "Accounting for Stock-Based  Compensation"  ("SFAS No. 123") requires use of
option  valuation  models that were not  developed  for use in valuing  employee
stock  options.  Under  APB No.  25,  compensation  expense  is  required  to be
recognized when the exercise price of the Company's employee stock options is at
a price below the market price of the underlying stock on the date of grant.

        Incentive Plans. The 1996 Plan and the 1988 Plan were adopted in October
1995 and June  1988,  respectively.  In May  1998,  the  Company's  stockholders
approved an amendment  to the 1996 Plan which  increased  the maximum  number of
shares  available  for awards under the 1996 Plan from  1,100,000 to  2,100,000.
Effective  as of  January  1, 1996,  the 1996 Plan  replaced  the 1988 Plan with
respect to all future  stock and option  awards by the Company to its  employees
and  consultants.   A  committee  of  the  Company's  Board  of  Directors  (the
"Committee")  approves  the sale of shares and the granting of  nonstatutory  or
incentive  stock  options.  In addition,  under the 1996 Plan, the Committee may
grant stock appreciation rights to employees and consultants of the Company. The
purchase  price for shares and the exercise  price of options are  determined by
the Committee (although, the exercise price of incentive stock options may be no
less than the fair market value of the common stock on the date of grant).

        In  general,  options  granted  under the  Incentive  Plans  vest over a
four-year  period.  Unvested  options  are  forfeited  upon  termination  of the
employee or consulting  relationship.  Vested options, if not exercised within a
specified  period  of  time  following  the  termination  of the  employment  or
consulting relationship,  are also forfeited.  Options generally expire 10 years
from the date of grant.  Shares of common stock sold under the  Incentive  Plans
are also generally subject to vesting. Unvested shares of common stock which are
sold under the Incentive Plans may be repurchased by the Company, at its option,
at the original  sale price upon  termination  of the  employment  or consulting
relationship of the holder with the Company.  Options granted and shares sold to
employees  under the  Incentive  Plans  generally  become  fully vested upon the
occurrence  of a change in control of the  Company  (as  defined) if the holders
thereof are terminated in connection  with such change in control other than for
cause (as defined).  At December 31, 1998,  967,187 shares remain  available for
future  awards  under  the  1996  Plan.  As  of  December  31,  1998,  no  stock
appreciation rights had been awarded under the 1996 Plan.

        Director Plan.   The Director Plan was adopted by the Board of Directors
in March 1996 and approved by the  stockholders in  June 1996. In general, under
the Director Plan, each nonemployee director of the

                                       61

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1998


Company  is  automatically  granted  an  option on the date that he or she first
becomes a member of the Board of Directors. In addition, on June 1 of each year,
commencing in 1997, each nonemployee director is granted an additional option to
purchase  2,500  shares of common  stock at an exercise  price equal to the fair
market value on the date of grant.  The maximum  number of shares subject to the
Director Plan is 250,000.  In general,  options  granted under the Director Plan
become  exercisable  as to 1/24th of the total  number of shares  subject to the
option for each calendar  month  elapsed after the date of the option grant.  In
the event of a change in control of the  Company  (as  defined)  or the death or
disability  of the  optionee,  any  unvested  portion of the options will become
exercisable  in full.  Options  granted under the Director Plan will expire upon
the earliest to occur of the following: (a) the expiration of ten years from the
date of grant of the  option,  (b) one year  after the  optionee  ceases to be a
director of the Company by reason of death or disability of the optionee, or (c)
three months after the date the optionee  ceases to be a director of the Company
for any reason other than death or disability.

        Option  activities  under the Incentive  Plans and the Director Plan are
detailed in the following table:


                                                                    Weighted
                                                                     Average
                                                                     Option
                                       1996       1988    Director    Price
                                       Plan       Plan      Plan    Per Share
- ------------------------------------------------------------------------------
Outstanding at January 1, 1996            --    339,775       --     $ 1.79
Granted                              443,762         --   17,500     $13.24
Exercised                             (2,500)   (45,626)      --     $ 1.77
Forfeited                            (25,500)    (2,638)      --     $11.26
- ------------------------------------------------------------------------------
Outstanding at December 31, 1996     415,762    291,511   17,500     $ 8.55
Granted                              503,751         --   15,000     $12.99
Exercised                               (625)   (17,855)      --     $ 2.01
Forfeited                            (67,825)    (8,354)  (2,500)    $12.88
- ------------------------------------------------------------------------------
Outstanding at December 31, 1997     851,063    265,302   30,000     $10.47
Granted                              339,543         --   15,000     $13.36
Exercised                             (4,453)   (43,063)      --     $ 2.70
Forfeited                            (60,918)    (4,375)      --     $12.36
- ------------------------------------------------------------------------------
Outstanding at December 31, 1998   1,125,235    217,864   45,000     $11.39
==============================================================================
Exercisable at December 31, 1998     202,195    211,276   30,000     $ 8.10
==============================================================================
Exercisable at December 31, 1997      71,511    221,212   15,000     $ 5.27
==============================================================================
Exercisable at December 31, 1996       8,375    189,549    5,034     $ 2.72
==============================================================================


                                       62

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1998


        The  following  table  discloses at December  31, 1998,  for each of the
following  classes of options as  determined  by range of  exercise  price,  the
information  regarding  weighted-average  exercise  price  and  weighted-average
remaining contractual life of each said class:


                                           Weighted                    Weighted
                             Weighted       Average                     Average
                              Average      Remaining                   Exercise
                              Exercise    Contractual    Number Of      Price of
                 Number Of   Price of       Life Of       Options       Options
                  Options    Outstanding  Outstanding    Currently    Currently
 Option Class   Outstanding   Options       Options     Exercisable  Exercisable
 ------------   -----------   -------       -------     -----------  -----------
Prices ranging
 from
$1.76 - $2.00      232,864     $ 1.80     3.8 years       218,776        $ 1.79

Prices ranging
 from
$10.125 - $15.25 1,013,235     $12.86     9.0 years       137,945        $12.76

Prices ranging
 from              
$16.50 - $16.75    142,000     $16.58     7.3 years        86,750        $16.61


        The following  table discloses for each of the years ending December 31,
1998, 1997 and 1996, the number of options granted,  the  weighted-average  fair
values and the weighted-average  exercise prices for those options with exercise
prices that  equaled or were less than the market  price of the common  stock on
the date of grant.  There were no options  granted with an exercise  price above
the market price of the common stock on the date of grant.


<TABLE>

<S>             <C>           <C>       <C>            <C>           <C>         <C>            <C>          <C>        <C> 

 

                               1998                                     1997                                   1996
                -----------------------------------    --------------------------------------   ----------------------------------
                  Number                                  Number                                  Number
                    of          Fair     Exercise           of          Fair       Exercise         of          Fair     Exercise
                  Options      Value       Price         Options        Value       Price         Options      Value      Price
- --------------- -----------  ---------- -----------    ------------  ----------- ------------   -----------  ---------- ----------
Exercise
price equals
market price        354,543    $7.66       $13.36          518,751      $7.59       $12.99        433,262       $ 5.75      $13.92
Exercise                                               

price less
than market
price                    --       --           --               --         --           --         28,000       $14.44      $ 2.98

</TABLE>

        At December 31, 1998,  125 of the shares sold under the 1988 Plan remain
subject to repurchase at an aggregate price of $250.

        Other  Disclosures.  Pro forma  information  regarding  net  income  and
earnings  per share is required by SFAS No. 123, and has been  determined  as if
the Company had been  accounting  for its employee  stock options under the fair
value method of SFAS No. 123. The fair value for these  options was estimated at
the date of grant using a Black-Scholes  option pricing model with the following
assumptions for 1998, 1997 and 1996,  respectively:  weighted average  risk-free
interest rates of 4.70%,  5.92% and 6.34%; no dividends;  and a weighted-average
expected life of the options of 5 years.  Weighted average volatility factors of
the expected

                                       63

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1998


market price of the Company's common stock of .628, .623 and .352, were used for
1998, 1997 and 1996, respectively.

        The  Black-Scholes  option  valuation  model  was  developed  for use in
estimating the fair value of traded  options which have no vesting  restrictions
and are fully  transferable.  In addition,  option  valuation models require the
input of highly  subjective  assumptions  including  the  expected  stock  price
volatility.  Because the Company's  employee stock options have  characteristics
significantly different from those of traded options, and because changes in the
subjective input assumptions can materially  affect the fair value estimate,  in
management's  opinion, the existing models do not necessarily provide a reliable
single measure of the fair value of its employee stock options.

        For purposes of pro forma net loss disclosures, the estimated fair value
of options granted  subsequent to 1994 is amortized to expense over the options'
vesting period. The Company's pro forma net loss information is as follows:

                                    1998              1997              1996
- --------------------------------------------------------------------------------
Pro forma net loss               $ (7,863,000)  $ (6,113,000)  $ (2,847,000)
Pro forma net loss per share     $      (0.74)  $      (0.75)  $      (0.38)
- --------------------------------------------------------------------------------


        The pro forma  information  above is not likely to be  representative of
the  effects on  reported  net loss for future  years as options  are  generally
granted each year and vest over several years and only include grants subsequent
to 1994.

        For certain  options  granted  during  1996,  the  Company has  recorded
pursuant to APB No. 25 approximately  $388,000 of deferred  compensation expense
representing  the  difference  between the exercise price thereof and the market
value of the common stock as of the date of grant. This compensation  expense is
amortized  over the  vesting  period of each  option  granted.  Amortization  of
deferred  compensation  under the  Incentive  Plans  amounted  to  approximately
$79,000,  $124,000 and $179,000  during 1998,  1997 and 1996,  respectively.  In
addition,  approximately $20,000,  $12,000 and $121,000 of deferred compensation
as it relates to the Incentive  Plans was reversed  during 1998,  1997 and 1996,
respectively, due to the forfeiture of the unvested options.


Note 8 -- Income Taxes

        The liability method is used in accounting for income taxes.  Under this
method,  deferred tax assets and liabilities are determined based on differences
between  financial  reporting  and tax bases of assets and  liabilities  and are
measured  using the  enacted  tax rates and laws that will be in effect when the
differences are expected to reverse.

        At December  31,  1998 and 1997,  the  Company  had net  operating  loss
("NOL")   carryforwards   of   approximately    $30,000,000   and   $25,000,000,
respectively,  for Federal  income tax purposes that will expire  principally in
the years  2002  through  2018.  In  addition,  the  Company  had  research  and
development credit

                                       64

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1998


carryforwards of approximately  $1,610,000 which will expire principally in 2002
through 2018. For financial reporting  purposes,  a valuation allowance has been
recognized to offset the deferred tax assets related to these carryforwards. Due
to the  limitations  imposed by the Tax  Reform Act of 1986,  and as a result of
significant changes in the Company's ownership in 1993 and 1997, the utilization
of approximately  $25,000,000 of net operating loss  carryforwards is subject to
annual  limitation.  The utilization of the research and development  credits is
similarly limited.

        A reconciliation  of the Company's income tax expense  (benefit) at U.S.
federal  statutory  tax rates to  recorded  income tax expense  (benefit)  is as
follows:


                                               1998         1997         1996
- --------------------------------------------------------------------------------
Tax at U.S. statutory rates                $(2,208,000) $(1,818,000) $ (895,000)
State income taxes                            (386,000)    (318,000)   (156,000)
Research and development credit               (110,000)          --          --
Expiration of state NOL's                        2,000      356,000          --
Other                                           50,000      108,000       8,000
Valuation allowance recorded                 2,652,000    1,672,000   1,043,000
- --------------------------------------------------------------------------------
    Recorded tax provision                          --           --          --
================================================================================


        Significant  components  of the  Company's  deferred  tax  assets  as of
December 31, 1998 and 1997, are as follows:


                                                          1998           1997
- --------------------------------------------------------------------------------
Deferred tax assets:
Net operating loss carryforwards                     $  11,782,000 $  9,752,000
Research and development credit carryforwards            1,610,000    1,500,000
Book over tax amortization                               1,282,000      770,000
- --------------------------------------------------------------------------------
    Total deferred tax assets                           14,674,000   12,022,000
Valuation allowance                                    (14,674,000) (12,022,000)
- --------------------------------------------------------------------------------
Net deferred tax assets                                        --            --
================================================================================


Note 9 -- Commitments

        The Company leases  facilities  under an agreement  expiring on December
31, 2015.

        Rent  expense  for the years  ended  December  31,  1998,  1997 and 1996
approximated  $693,000,  $703,000,  and  $674,000,  respectively,  and  included
executory  costs of $126,000,  $120,000 and $93,000,  respectively.  In November
1996,  a standby  letter of credit for  $580,000 was issued to the landlord as a
security deposit (expires  February 1999). The Company is to renew the letter of
credit  annually  during the  duration of the lease.  As of December 31, 1998, a
bank  imposed  restriction  has been  placed  on  $600,000  in cash  held in the
Company's investment account to secure the letter of credit.


                                       65

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1998


        As of December 31, 1998,  future minimum annual payments under the lease
are as follows:

       1999        $ 1,107,000
       2000          1,251,000
       2001          1,309,000
       2002          1,309,000
       2003          1,309,000
 Thereafter         20,482,000
                  ------------
      Total       $ 26,767,000
                  ============


        The  Company  is  party to a  license  agreement  with a major  research
university.  Under the terms of this agreement, the Company received a worldwide
nonexclusive license under a patent issued in January 1991, which patent expires
in 2008.  The Company is  committed  under this  agreement  to pay  royalties on
future net sales of products employing the technology or falling under claims of
the patents covered by this agreement.

        The Company has an employment agreement with its Chairman, President and
Chief Executive Officer which provides for severance  payments of up to one year
of  base  salary  upon  the  occurrence  of  certain  events,   including  early
termination and termination upon a change in control, as defined. In addition to
severance  payments,  under  certain  circumstances,  the  agreement  calls  for
immediate vesting of any unvested shares of common stock and stock options.

        At December 31, 1998, the Company had entered into  agreements with each
of its Senior Vice  President and Chief  Financial  Officer,  Vice President for
Research,  Vice  President  and General  Counsel and Vice  President of Business
Development  which  provide for  severance  payments in amounts  equal to 50% of
annual base salary, on substantially the same terms as stated above. In addition
to severance,  under certain  circumstances,  the agreements  call for immediate
vesting of any unvested shares of common stock and stock options.


Note 10 -- Employee Benefit Plans

        The Company established a defined contribution  employee retirement plan
(the "Plan")  effective  January 1, 1990,  conforming  to Section  401(k) of the
Internal  Revenue Code ("IRC").  All eligible  employees with six months service
may elect to have a portion of their salary deducted and contributed to the Plan
up to the maximum  allowable  limitations of the IRC. The Company matches 50% of
each  participant's  contribution up to the first 5% of annual  compensation (as
defined)  with a  maximum  employer  contribution  of  2.5%  of a  participant's
compensation.  The Company's  matching portion,  which amounted to approximately
$117,000,  $107,000 and $103,000 for the years ended December 31, 1998, 1997 and
1996, respectively, vests over a six-year period.

                                       66

<PAGE>


                       SYNAPTIC PHARMACEUTICAL CORPORATION
                   NOTES TO FINANCIAL STATEMENTS--(Continued)
                                December 31, 1998


        The Company currently provides medical, dental, long-term disability and
life  insurance  benefits  for its  full-time  employees.  The Company  does not
presently provide any post-retirement health benefits.


Note 11 -- Subsequent Event

        On February 4, 1999,  the Company and Lilly entered into an amendment to
the  collaborative and license agreement dated as of January 25, 1991. Under the
terms of the amendment the parties extended the terms of the collaboration  from
December 31, 1998, to July,  31, 1999.  The amendment  requires Lilly to provide
research funding to the Company in  consideration  for research support provided
by the Company to Lilly.  The amount of such  research  funding has been reduced
from that level which existed at December 31, 1998.

                                       67

<PAGE>



Item 9. Changes in and Disagreements with Accountants on Accounting
         and Financial Disclosure

    None.


                                    Part III


Item 10.  Directors and Executive Officers of the Registrant

    The information  required by this item is  incorporated  herein by reference
from  the   information   under  the  captions   "ELECTION  OF  DIRECTORS"   and
"COMPENSATION AND OTHER INFORMATION  CONCERNING OFFICERS,  DIRECTORS AND CERTAIN
STOCKHOLDERS" contained in the Proxy Statement.


Item 11.  Executive Compensation

    The information  required by this item is  incorporated  herein by reference
from the  information  under the  caption  "COMPENSATION  AND OTHER  INFORMATION
CONCERNING OFFICERS,  DIRECTORS AND CERTAIN STOCKHOLDERS" contained in the Proxy
Statement.


Item 12.  Security Ownership of Certain Beneficial Owners and Management

    The information  required by this item is  incorporated  herein by reference
from the information under the caption "SECURITY OWNERSHIP OF CERTAIN BENEFICIAL
OWNERS AND MANAGEMENT" contained in the Proxy Statement.


Item 13.  Certain Relationships and Related Transactions

    The information  required by this item is  incorporated  herein by reference
from the  information  under the  caption  "COMPENSATION  AND OTHER  INFORMATION
CONCERNING OFFICERS,  DIRECTORS AND CERTAIN STOCKHOLDERS" contained in the Proxy
Statement.



                                       68

<PAGE>



                                     Part IV


Item 14.  Exhibits, Financial Statement Schedules and Reports on Form 8-K

(a)      (1)      Financial Statements

         Reference  is made to the Index to Financial  Statements  under Item 8,
Part II hereof.


         (2)      Financial Statement Schedules

         The  Financial  Statement  Schedules  have been  intentionally  omitted
either  because  they are not  required  or  because  the  information  has been
included  in the notes to the  Financial  Statements  included in this Report on
Form 10-K.


         (3)      Exhibits


Exhibit
  No.             Description
- ----------        --------------------------------------------------------------
   3.1(a)         Amended  and  Restated  Certificate  of  Incorporation  of the
                  Company, filed December 19, 1995 (incorporated by reference to
                  Exhibit 3.1(a) to the Company's  Quarterly Report on Form 10-Q
                  filed for the quarter  ended June 30,  1996,  Commission  File
                  Number 0-27324)
   3.1(b)         Certificate of Designations  of Series A Junior  Participating
                  Preferred  Stock  filed  December  19, 1995  (incorporated  by
                  reference to Exhibit 3.1(b) to the Company's  Quarterly Report
                  on Form 10-Q filed for the quarter  ended  December  31, 1995,
                  Commission File Number 0-27324)
   3.1(c)         Certificate   of   Amendment   of  the  Amended  and  Restated
                  Certificate  of  Incorporation  of the Company,  filed June 5,
                  1996  (incorporated  by  reference  to  Exhibit  3.1(c) to the
                  Company's  Quarterly Report on Form 10-Q filed for the quarter
                  ended June 30, 1996, Commission File Number 0-27324)
       3.2        Amended and  Restated  By-Laws of the  Company,  as amended on
                  February 6, 1998  (incorporated by reference to Exhibit 3.2 to
                  the Company's  Annual Report on Form 10-K filed for the fiscal
                  year ended December 31, 1997, Commission File Number 0-27324)
       4.1        Specimen  of  Certificate  of  Common  Stock  of  the  Company
                  (incorporated  by  reference  to  Exhibit  4 to the  Company's
                  Registration  Statement  on Form S-1, as amended  (File Number
                  33-98366), which became effective on December 13, 1995)


                                       69

<PAGE>




       4.2        Rights  Agreement  dated as of December 11, 1995,  between the
                  Company and Chase Mellon Shareholder Services, as Rights Agent
                  (incorporated  by  reference  to Exhibit 4.2 to the  Company's
                  Annual  Report on Form 10-K  filed for the  fiscal  year ended
                  December 31, 1995, Commission File Number 0-27324)
     *10.1        Research, Option and License Agreement dated as of January 25,
                  1991,  between  the  Company  and Eli  Lilly and  Company,  as
                  amended by Addendum dated as of January 1, 1995  (incorporated
                  by  reference to Exhibit  10.1 to the  Company's  Registration
                  Statement  on Form S-1,  as amended  (File  Number  33-98366),
                  which became effective on December 13, 1995)
     *10.2        Research  Collaboration  and  License  Agreement  dated  as of
                  November 30, 1993,  between the Company and Merck & Co., Inc.,
                  as amended by  Amendment  No. 1 dated as of February 15, 1995,
                  and as modified by the Letter  Agreement dated August 25, 1995
                  (incorporated  by reference  to Exhibit 10.2 to the  Company's
                  Registration  Statement  on Form S-1, as amended  (File Number
                  33-98366), which became effective on December 13, 1995)
     *10.3        Research  and  License  Agreement  dated as of August 4, 1994,
                  between     the     Company     and     Ciba-Geigy     Limited
                  (predecessor-in-interest   of  Novartis   AG,  the  parent  of
                  Novartis Pharma AG) (incorporated by reference to Exhibit 10.3
                  to the  Company's  Registration  Statement  on  Form  S-1,  as
                  amended  (File Number  33-98366),  which  became  effective on
                  December 13, 1995)
     +10.4        1988  Amended  and  Restated  Incentive  Plan  of the  Company
                  (incorporated  by reference  to Exhibit 10.9 to the  Company's
                  Registration  Statement  on Form S-1, as amended  (File Number
                  33-98366), which became effective on December 13, 1995)
     +10.5        Form of Restricted  Stock  Purchase  Agreement  under the 1988
                  Amended   and   Restated   Incentive   Plan  of  the   Company
                  (incorporated  by reference to Exhibit  10.10 to the Company's
                  Registration  Statement  on Form S-1, as amended  (File Number
                  33-98366), which became effective on December 13, 1995)
     +10.6        Form of  Incentive  Stock  Option  Agreement  under  the  1988
                  Amended   and   Restated   Incentive   Plan  of  the   Company
                  (incorporated  by reference to Exhibit  10.11 to the Company's
                  Registration  Statement  on Form S-1, as amended  (File Number
                  33-98366), which became effective on December 13, 1995)
     +10.7        Form of  Nonqualified  Stock Option  Agreement  under the 1988
                  Amended   and   Restated   Incentive   Plan  of  the   Company
                  (incorporated  by reference to Exhibit  10.12 to the Company's
                  Registration  Statement  on Form S-1, as amended  (File Number
                  33-98366), which became effective on December 13, 1995)
      10.8        Third Amended and Restated Registration Rights Agreement dated
                  as of January 19, 1993, as amended by Amendment No. 1 dated as
                  of August 4, 1994  (incorporated by reference to Exhibit 10.13
                  to the  Company's  Registration  Statement  on  Form  S-1,  as
                  amended  (File Number  33-98366),  which  became  effective on
                  December 13, 1995)


                                       70

<PAGE>




      10.9        Form of Common Stock Purchase Warrant dated as of January 1993
                  (incorporated  by reference to Exhibit  10.15 to the Company's
                  Registration  Statement  on Form S-1, as amended  (File Number
                  33-98366), which became effective on December 13, 1995)
      10.10       License Agreement dated June 3, 1991,  between the Company and
                  the  Trustees of Columbia  University  in the City of New York
                  (incorporated  by reference to Exhibit  10.16 to the Company's
                  Registration  Statement  on Form S-1, as amended  (File Number
                  33-98366), which became effective on December 13, 1995)
     +10.11       Employment  Agreement  dated as of February 14, 1994,  between
                  the Company and Robert I. Taber  (incorporated by reference to
                  Exhibit 10.21 to the Company's  Registration Statement on Form
                  S-1, as amended (File Number 33-98366), which became effective
                  on December 13, 1995)
     +10.12       Employment  Agreement  dated as of April 6, 1995,  between the
                  Company and Richard L. Weinshank (incorporated by reference to
                  Exhibit 10.24 to the Company's  Registration Statement on Form
                  S-1, as amended (File Number 33-98366), which became effective
                  on December 13, 1995)
      10.13       Form of Indemnification Agreement between the Company and each
                  of its  executive  officers  and  directors  (incorporated  by
                  reference to  Exhibit  10.25  to  the  Company's  Registration
                  Statement on Form S-1,as amended (File Number 33-98366), which
                  became effective on December 13, 1995)
     +10.14       1996 Incentive Plan of the Company, as amended on May 12, 1998
                  (filed herewith)
     +10.15       Incentive  Stock  Option  Agreement  dated  October  1,  1993,
                  between the Company and Kathleen P. Mullinix  (incorporated by
                  reference  to  Exhibit  10.28  to the  Company's  Registration
                  Statement  on Form S-1,  as amended  (File  Number  33-98366),
                  which became effective on December 13, 1995)
     +10.16       Incentive  Stock  Option  Agreement  dated  February 14, 1994,
                  between  the  Company  and  Robert I. Taber  (incorporated  by
                  reference  to  Exhibit  10.29  to the  Company's  Registration
                  Statement  on Form S-1,  as amended  (File  Number  33-98366),
                  which became effective on December 13, 1995)
     +10.17       Incentive  Stock  Option  Agreement  dated  February  7, 1994,
                  between  the  Company  and  Lisa L.  Reiter  (incorporated  by
                  reference  to  Exhibit  10.30  to the  Company's  Registration
                  Statement  on Form S-1,  as amended  (File  Number  33-98366),
                  which became effective on December 13, 1995)
     +10.18       Incentive  Stock Option  Agreement dated as of March 21, 1996,
                  between the Company and Kathleen P. Mullinix  (incorporated by
                  reference to Exhibit 10.25 to the Company's  Quarterly  Report
                  on Form  10-Q  filed for the  quarter  ended  March 31,  1996,
                  Commission File Number 0-27324)


                                       71

<PAGE>




     +10.19       Incentive  Stock Option  Agreement dated as of March 21, 1996,
                  between  the Company  and Robert L.  Spence  (incorporated  by
                  reference to Exhibit 10.26 to the Company's  Quarterly  Report
                  on Form  10-Q  filed for the  quarter  ended  March 31,  1996,
                  Commission File Number 0-27324)
     +10.20       Incentive  Stock Option  Agreement dated as of March 21, 1996,
                  between  the  Company  and  Lisa L.  Reiter  (incorporated  by
                  reference to Exhibit 10.27 to the Company's  Quarterly  Report
                  on Form  10-Q  filed for the  quarter  ended  March 31,  1996,
                  Commission File Number 0-27324)
     +10.21       Nonqualified  Stock  Option  Agreement  dated as of March  21,
                  1996,   between  the   Company   and   Richard  L.   Weinshank
                  (incorporated  by reference to Exhibit  10.28 to the Company's
                  Quarterly  Report on Form 10-Q  filed  for the  quarter  ended
                  March 31, 1996, Commission File Number 0-27324)
     +10.22       Form of  Incentive  Stock  Option  Agreement  under  the  1996
                  Incentive Plan  (incorporated by reference to Exhibit 10.29 to
                  the  Company's  Quarterly  Report on Form  10-Q  filed for the
                  quarter ended March 31, 1996, Commission File Number 0-27324)
     +10.23       Form of  Nonqualified  Stock Option  Agreement  under the 1996
                  Incentive Plan  (incorporated by reference to Exhibit 10.30 to
                  the  Company's  Quarterly  Report on Form  10-Q  filed for the
                  quarter ended March 31, 1996, Commission File Number 0-27324)
   ***10.24       Research  and  License  Agreement  dated  as of May 31,  1996,
                  between     the     Company     and     Ciba-Geigy     Limited
                  (predecessor-in-interest  of Novartis  AG,  parent of Novartis
                  Pharma AG)  (incorporated by reference to Exhibit 10.31 to the
                  Company's  Quarterly  Report  on  Form  10-Q/A  filed  for the
                  quarter ended June 30, 1996, Commission File Number 0-27324)
   ***10.25       Supplement No. 1 to Research and License Agreement dated as of
                  August 4, 1994,  between the Company  and  Ciba-Geigy  Limited
                  (predecessor-in-interest  of Novartis  AG,  parent of Novartis
                  Pharma AG)  (incorporated by reference to Exhibit 10.32 to the
                  Company's  Quarterly  Report  on  Form  10-Q/A  filed  for the
                  quarter ended June 30, 1996, Commission File Number 0-27324)
      10.26       1996  Nonemployee  Director  Stock  Option Plan of the Company
                  (incorporated  by reference to Exhibit  10.33 to the Company's
                  Quarterly Report on Form 10-Q filed for the quarter ended June
                  30, 1996, Commission File Number 0- 27324)
      10.27       Form of Stock  Option  Agreement  under  the 1996  Nonemployee
                  Director  Stock  Option Plan of the Company  (incorporated  by
                  reference  to  Exhibit  A  attached  to  Exhibit  10.33 to the
                  Company's  Quarterly Report on Form 10-Q filed for the quarter
                  ended June 30, 1996, Commission File Number 0-27324)
    **10.28       Addendum No. 2 to Research, Option and License Agreement dated
                  as of  October 31, 1996, between the Company and Eli Lilly and
                  Company  (incorporated  by  reference  to Exhibit 10.35 to the
                  Company's Annual Report on Form 10-K filed for the fiscal year
                  ended December 31, 1996, Commission File No. 0-27324)


                                       72

<PAGE>




   ***10.29       Amendment No.2 to Research Collaboration and License Agreement
                  dated as of  October  9, 1996, between the Company and Merck &
                  Co., Inc. (incorporated  by reference  to Exhibit 10.36 to the
                  Company's Annual Report on Form 10-K filed for the fiscal year
                  ended December 31, 1996, Commission File No. 0-27324)
     +10.30       Incentive  Stock  Option  Agreement  dated as of December  13,
                  1996,   between   the  Company   and   Kathleen  P.   Mullinix
                  (incorporated  by reference to Exhibit  10.37 to the Company's
                  Annual  Report on Form 10-K  filed for the  fiscal  year ended
                  December 31, 1996, Commission File No. 0-27324)
     +10.31       Form of Incentive Stock Option Agreement dated as of  December
                  13, 1996,  entered into between the Company and each of Robert
                  L. Spence, Robert I.  Taber,  Lisa  L. Reiter  and  Richard L.
                  Weinshank (incorporated by reference to  Exhibit  10.38 to the
                  Company's Annual Report on Form 10-K filed for the fiscal year
                  ended December 31, 1996, Commission File No. 0-27324)
   ***10.32       Collaborative  Research and License Agreement dated as of July
                  28, 1997, between the Company and the  Warner-Lambert  Company
                  (incorporated  by reference to Exhibit  10.39 to the Company's
                  Quarterly  Report on Form 10-Q  filed  for the  quarter  ended
                  September 30, 1997, Commission File Number 0- 27324)
     +10.33       Executive Employment Agreement effective as of October 1,1997,
                  between the Company and Dr. Kathleen P. Mullinix (incorporated
                  by reference to  Exhibit 10.34  to the Company's Annual Report
                  on Form 10-K filed for  the  fiscal  year  ended  December 31,
                  1997, Commission File No. 0-27324)
      10.34       Lease Agreement  dated November 19, 1997,  between the Company
                  and Century  Associates,  which becomes  effective  January 1,
                  1998  (incorporated  by  reference  to  Exhibit  10.35  to the
                  Company's Annual Report on Form 10-K filed for the fiscal year
                  ended December 31, 1997, Commission File No. 0- 27324)
      10.35       Amendment  No.  3  to  Research   Collaboration   and  License
                  Agreement  dated as of December  1, 1997,  between the Company
                  and Merck & Co.,  Inc.  (incorporated  by reference to Exhibit
                  10.36 to the  Company's  Annual  Report on Form 10-K filed for
                  the fiscal year ended December 31, 1997,  Commission  File No.
                  0-27324)
     +10.36       Amended and Restated Employment  Agreement dated as of January
                  1,  1998,   between   the   Company   and  Robert  L.   Spence
                  (incorporated  by reference to Exhibit  10.37 to the Company's
                  Annual  Report on Form 10-K  filed for the  fiscal  year ended
                  December 31, 1997, Commission File No. 0-27324)
   ***10.37       Cooperation  Agreement  dated as of January 12, 1998,  between
                  the Company and Grunenthal GmbH  (incorporated by reference to
                  Exhibit  10.38 to the  Company's  Annual  Report  on Form 10-K
                  filed for the fiscal year ended December 31, 1997,  Commission
                  File No. 0-27324)


                                       73

<PAGE>




     +10.38       Amended and Restated Employment Agreement dated as of February
                  7, 1998, between the Company and Lisa L. Reiter  (incorporated
                  by reference to Exhibit 10.39 to the  Company's  Annual Report
                  on Form 10-K filed for the  fiscal  year  ended  December  31,
                  1997, Commission File No. 0-27324)
      10.39       Amendment No.4 to Research Collaboration and License Agreement
                  dated as  of  March  2, 1998,  between the Company and Merck &
                  Co., Inc. (incorporated  by  reference to Exhibit 10.40 to the
                  Company's Annual Report on Form 10-K filed for the fiscal year
                  ended December 31, 1997, Commission File No. 0-27324)
   ***10.40       Option  and  License  Agreement  dated as of  March  2,  1998,
                  between the Company and Glaxo Group Limited  (incorporated  by
                  reference to Exhibit 10.41 to the  Company's  Annual Report on
                  Form 10-K filed for the fiscal year ended  December  31, 1997,
                  Commission File No. 0-27324)
     +10.41       Employment  Agreement  dated as of April 1, 1998,  between the
                  Company and Theresa A. Branchek  (incorporated by reference to
                  Exhibit 10.1 to the  Company's  Quarterly  Report on Form 10-Q
                  filed for the quarter  ended March 31, 1998,  Commission  File
                  Number 0-27324)
     +10.42       Incentive  Stock  Option  Agreement  dated as of May 12, 1998,
                  between the Company and Theresa A. Branchek  (incorporated  by
                  reference to Exhibit 10.1 to the Company's Quarterly Report on
                  Form  10-Q  filed  for  the  quarter   ended  June  30,  1998,
                  Commission File Number 0-27324)
     +10.43       Nonqualified  Stock Option Agreement dated as of May 12, 1998,
                  between the Company and Theresa A. Branchek  (incorporated  by
                  reference to Exhibit 10.2 to the Company's Quarterly Report on
                  Form  10-Q  filed  for  the  quarter   ended  June  30,  1998,
                  Commission File Number 0-27324)
      10.44       Amendment No. 1 to Cooperation  Agreement  between the Company
                  and Grunenthal GmbH (incorporated by reference to Exhibit 10.1
                  to the Company's  Quarterly  Report on Form 10-Q filed for the
                  quarter  ended  September  30,  1998,  Commission  File Number
                  0-27324)
      10.45       First  Amendment  to Lease  dated  as of  November  25,  1998,
                  between  ARE-215  College  Road,  LLC, and the Company  (filed
                  herewith)
      10.46       Amendment No.5 to Research Collaboration and License Agreement
                  dated as of December  1, 1998, between the Company and Merck &
                  Co., Inc. (filed herewith)
      10.47       Addendum No. 3  to  Research,  Option  and  License  Agreement
                  effective as of  January  1, 1999, between the Company and Eli
                  Lilly and Company (filed  herewith)
      23.1        Consent of Independent Auditors, Ernst & Young LLP
      24          Powers of Attorney
      27          Financial Data Schedule

- -----------------

                                       74

<PAGE>



*     Portions of this Exhibit were omitted and confidential  treatment  thereof
      has  been  granted  by  the  Secretary  of  the  Securities  and  Exchange
      Commission  in  response  to  the  Registrant's   Application   Requesting
      Confidential Treatment under Rule 406 under the Securities Act of 1933, as
      amended.

**    Portions of this Exhibit have been omitted and filed  separately  with the
      Secretary  of the  Securities  and  Exchange  Commission  pursuant  to the
      Registrant's  Application  Requesting  Confidential  Treatment  under Rule
      24b-2 under the Securities Exchange Act of 1934, as amended.

***   Portions of this Exhibit were omitted and confidential  treatment  thereof
      has  been  granted  by  the  Secretary  of  the  Securities  and  Exchange
      Commission  in  response  to  the  Registrant's   Application   Requesting
      Confidential  Treatment under Rule 246-2 under the Securities Act of 1933,
      as amended.

+     Management contracts and compensatory plans or arrangements


(b)   Reports on Form 8-K

      There  were no  reports  on Form 8-K filed by the  Registrant  during  the
fourth quarter of the fiscal year ended December 31, 1998.


Supplemental Information

      Copies of the Registrant's Proxy Statement and copies of the form of proxy
to be used at the Annual Meeting of Stockholders to be held on May 6, 1999, will
be furnished to the  Securities  and  Exchange  Commission  at the time they are
distributed to the Registrant's stockholders.










      Amerge(R),   Imitrex(R),   Wellbutrin(R),   Zantac(R)   and  Zyban(R)  are
registered  trademarks of Glaxo Wellcome Inc.  Benzedrine(R),  Dexedrine(R)  and
Paxil(R)  are  registered  trademarks  of  SmithKline  Beecham  Pharmaceuticals.
Hytrin(R) is the registered trademark of Abbott  Laboratories.  Prozac(R) is the
registered  trademark of Lilly and Dista Products.  Maxalt(R) and Proscar(R) are
registered trademarks of Merck.  Pondimin(R) is the registered trademark of A.H.
Robins  Company,  Inc.  Redux(R) is the  registered  trademark  of Wyeth  Ayerst
Laboratories.  Zoloft(R) and Cardura(R) are registered trademarks of Pfizer Inc.
Flomax(R) is the registered  trademark of Boehringer  Ingelheim  Pharmaceuticals
Inc.   Claritin(R)  is  the  registered   trademark  of  Schering   Corporation.
Propulsid(R) is the registered  trademark of Johnson & Johnson.  Zomig(R) is the
registered  trademark of Zeneca Inc.  Meridia(R) is the registered  trademark of
Knoll  Pharmaceutical  Co.  Celexa(R)  is the  registered  trademark  of  Forest
Laboratories.  All other brand names or trademarks  appearing in this Report are
the property of their respective owners.


                                       75

<PAGE>


                                 SIGNATURE PAGE


      Pursuant  to the  requirements  of Section  13 or 15(d) of the  Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

                                SYNAPTIC PHARMACEUTICAL CORPORATION

Date: March 23, 1999            By:   /s/ Kathleen P. Mullinix
                                      ---------------------------
                                Name:     Kathleen P. Mullinix
                                Title:    Chairman, President and
                                           Chief Executive Officer


      Pursuant to the  requirements  of the Securities Act of 1934,  this report
has been  signed by the  following  persons on behalf of the  registrant  in the
capacities and on the dates indicated.



    Signature                   Title                                  Date
- ---------------------------     --------------------------------  --------------

/s/ Kathleen P. Mullinix        Chairman, President and
- ---------------------------       Chief Executive Officer         March 23, 1999
Kathleen P. Mullinix, Ph.D.


/s/ Robert L. Spence            Senior Vice President and
- ---------------------------       Chief Financial Officer
Robert L. Spence                  (Principal Accounting Officer)  March 23, 1999


         *                      Director                          March 23, 1999
- ---------------------------
Jonathan J. Fleming


         *                      Director                          March 23, 1999
- ---------------------------
Zola P. Horovitz, Ph.D.


         *                      Director                          March 23, 1999
- ---------------------------
Eric R. Kandel, M.D.


         *                      Director                          March 23, 1999
- ---------------------------
John E. Lyons


         *                      Director                          March 23, 1999
- ---------------------------
Sandra Panem


         *                      Director                          March 23, 1999
- ---------------------------
Alison Taunton-Rigby, Ph.D.




* By:   /s/ Kathleen P. Mullinix
      Name: Kathleen P. Mullinix, Ph.D.
      Title:   Attorney-in-Fact


                                                           EXHIBIT 10.14
                                                           -------------


                       SYNAPTIC PHARMACEUTICAL CORPORATION

                               1996 INCENTIVE PLAN


                                    ARTICLE 1

                            ESTABLISHMENT AND PURPOSE

         1.1   Establishment   and  Effective  Date.   Synaptic   Pharmaceutical
Corporation,  a Delaware corporation (the  "Corporation"),  hereby establishes a
stock  incentive  plan to be known as the "Synaptic  Pharmaceutical  Corporation
1996 Incentive Plan" (the "Plan"). The Plan shall become effective as of January
1, 1996, subject to the approval of the stockholders of the Corporation.  In the
event that such stockholder approval is not obtained,  any awards made hereunder
shall be cancelled and all rights of employees and  consultants  with respect to
such awards shall  thereupon  cease.  Upon  approval of the Plan by the Board of
Directors of the  Corporation  (the "Board"),  awards may be made by the Board's
Compensation Committee (the "Committee"), as provided herein.

         1.2  Purpose.  The purpose of the Plan is to  encourage  and enable key
employees and consultants  (subject to such requirements as may be prescribed by
the Committee) of the Corporation and its  subsidiaries to acquire a proprietary
interest in the Corporation  through the ownership of the  Corporation's  common
stock, par value $0.01 per share ("Common Stock"), and other rights with respect
to the Common Stock.  Such ownership will provide such employees and consultants
with a more direct stake in the future welfare of the  Corporation and encourage
them to remain with the  Corporation and its  subsidiaries.  It is also expected
that the Plan will  encourage  qualified  persons to seek and accept  employment
with the Corporation and its subsidiaries.


                                    ARTICLE 2

                                     AWARDS

         2.1 Form of Awards.  Awards under the Plan may be granted in any one or
all of the following  forms:  (i)  incentive  stock  options  ("Incentive  Stock
Options")  meeting the  requirements of Section 422 of the Internal Revenue Code
of  1986,   as  amended  (the   "Code");   (ii)   non-qualified   stock  options
("Non-qualified  Stock Options") (unless otherwise indicated,  references in the
Plan to "Options" shall include both Incentive  Stock Options and  Non-qualified
Stock Options);  (iii) stock appreciation rights ("Stock Appreciation  Rights"),
as  described  in Article 6 hereof,  which may be awarded  either in tandem with
Options  ("Tandem  Stock  Appreciation   Rights")  or  on  a  stand-alone  basis
("Nontandem Stock Appreciation  Rights");  (iv) shares of Common Stock which are
subject to vesting  requirements  as provided  in Article 9 hereof  ("Restricted
Shares"); (v) shares of


                                        1

<PAGE>



Common  Stock that are not  subject to any vesting  requirements  ("Unrestricted
Shares"); and (vi) tax offset payments ("Tax Offset Payments"),  as described in
Article 11 hereof.

         2.2 Maximum Shares Available. The maximum aggregate number of shares of
Common Stock  available for award under the Plan is 2,100,000 (as constituted on
March 6, 1998),  subject to adjustment pursuant to Article 12 hereof.  Shares of
Common Stock issued  pursuant to the Plan may be either  authorized but unissued
shares or issued shares  reacquired by the Corporation.  In the event that prior
to the end of the period during which Options may be granted under the Plan, any
Option  or any  Nontandem  Stock  Appreciation  Rights  under  the Plan  expires
unexercised or is terminated, surrendered or cancelled (other than in connection
with the exercise of Stock Appreciation Rights) without being exercised in whole
or in part for any reason,  or any Restricted  Shares are forfeited,  or if such
awards are settled in cash in lieu of shares of Common  Stock,  then such shares
shall be available for subsequent  awards under the Plan, upon such terms as the
Committee may determine. The aggregate number of shares of Common Stock that may
be  represented  by grants of Options or Stock  Appreciation  Rights made to any
individual during any two-year period may not exceed 250,000 shares,  subject to
adjustment pursuant to Article 12 hereof.

         2.3 Return of Prior Awards. As a condition to any subsequent award, the
Committee shall have the right, in its sole discretion,  to require employees to
return to the Corporation  awards previously  granted under the Plan. Subject to
the  provisions  of the  Plan,  such new  award  shall be upon  such  terms  and
conditions  as are  specified  by the  Committee  at the time  the new  award is
granted.


                                    ARTICLE 3

                                 ADMINISTRATION

         3.1  Committee.  Awards  shall be  determined,  and the  Plan  shall be
administered,  by the  Committee  as  appointed  from time to time by the Board,
which  Committee  shall  consist of not less than two (2)  members of the Board;
provided,  however,  that from and after the  consummation of the initial public
offering of the Common Stock and so long as the Plan shall be required to comply
with Rule 16b-3  ("Rule  16b-3")  promulgated  by the  Securities  and  Exchange
Commission  (the "SEC") under the  Securities  Exchange Act of 1934,  as amended
(the  "1934  Act"),  in order to  permit  transactions  pursuant  to the Plan by
employees of the  Corporation  to be exempt from the provisions of Section 16(b)
of the 1934 Act,  each member of the  Committee,  at the  effective  date of his
appointment to the Committee, shall be a "disinterested person," as that term is
defined in subparagraph (c)(2)(i) of Rule 16b-3, as in effect from time to time,
under the 1934 Act.

         3.2 Powers of the Committee.  Subject to the express  provisions of the
Plan, the Committee  shall have the power and authority (i) to grant Options and
to determine the purchase price of the Common Stock covered by each Option,  the
term of each Option,  the number of shares of Common Stock to be covered by each
Option,  the time or times at which each Option shall become exercisable and the
duration of the exercise  period  applicable  to each Option;  (ii) to designate
Options  as  Incentive  Stock  Options or  Non-qualified  Stock  Options  and to
determine


                                        2

<PAGE>



which Options, if any, shall be accompanied by Tandem Stock Appreciation Rights,
(iii) to grant Tandem Stock Appreciation Rights and Nontandem Stock Appreciation
Rights and to determine the terms and  conditions of such rights;  (iv) to grant
or cause to be sold  Restricted  Shares and to determine the purchase  price, if
any, of such shares and the vesting period and other conditions and restrictions
applicable to such shares; (v) to grant or cause to be sold Unrestricted  Shares
and to determine the purchase price,  if any, of such shares;  (vi) to determine
the  amount  of,  and to make,  Tax  Offset  Payments;  (vii) to  determine  the
employees and the consultants to whom, and the time or times at which,  Options,
Stock Appreciation Rights, Restricted Shares, Unrestricted Shares and Tax Offset
Payments  shall  be  granted  or made  and  (viii)  to take  all  other  actions
contemplated  to be taken by the Committee  under the Plan,  including,  but not
limited to,  authorizing the amendment of any written agreement  relating to any
award made hereunder.  Without limiting the foregoing, in the event of a merger,
consolidation,   combination,   exchange   of  shares,   separation,   spin-off,
reorganization,  liquidation or other similar transaction, the Committee may, in
its sole  discretion,  accelerate  the  lapse of  Restricted  Periods  and other
vesting periods and waiting periods and extend the exercise  periods  applicable
to any award made under the Plan.

         3.3  Delegation.  The  Committee  may  delegate  to one or  more of its
members or to any other person or persons such ministerial duties as it may deem
advisable;  provided,  however,  that the  Committee may not delegate any of its
responsibilities  hereunder if such  delegation  would cause the Plan to fail to
comply with the  "disinterested  administration"  rules under  Section 16 of the
Act. The Committee may also employ attorneys, consultants,  accountants or other
professional advisors and shall be entitled to rely upon the advice, opinions or
valuations of any such advisors.

         3.4  Interpretations.  The  Committee  shall  have  sole  discretionary
authority  to  interpret  the terms of the  Plan,  to adopt  and  revise  rules,
regulations  and policies to  administer  the Plan and to make any other factual
determinations   which  it  believes  to  be  necessary  or  advisable  for  the
administration  of  the  Plan.  All  actions  taken  and   interpretations   and
determinations  made by the  Committee  in good faith shall be final and binding
upon the  Corporation,  all employees and  consultants  who have received awards
under the Plan and all other interested persons.

         3.5 Liability;  Indemnification.  No member of the  Committee,  nor any
person to whom  ministerial  duties  have been  delegated,  shall be  personally
liable for any action,  interpretation or determination made with respect to the
Plan or awards made thereunder,  and each member of the Committee shall be fully
indemnified and protected by the Corporation with respect to any liability he or
she may incur with respect to any such action,  interpretation or determination,
to the extent  permitted  by  applicable  law and to the extent  provided in the
Corporation's  Certificate of Incorporation  and Bylaws, as amended from time to
time, or under any agreement between any such member and the Corporation.





                                        3

<PAGE>



                                    ARTICLE 4

                                   ELIGIBILITY

                  Awards may be made to all  employees  and  consultants  of the
Corporation or any of its subsidiaries  (subject to such  requirements as may be
prescribed  by  the  Committee).  Awards  may  be  made  to a  director  of  the
Corporation  who is not  also a  member  of the  Committee,  provided  that  the
director is also an employee.  In determining  the employees and  consultants to
whom  awards  shall be  granted  and the  number of shares to be covered by each
award, the Committee shall take into account the nature of the services rendered
by such employees and consultants,  their present and potential contributions to
the success of the  Corporation and its  subsidiaries  and such other factors as
the Committee in its sole discretion shall deem relevant.

                  Notwithstanding   the   foregoing,   only   employees  of  the
Corporation  and  any  present  or  future  corporation  which  is or  may  be a
"subsidiary  corporation" of the Corporation (as such term is defined in Section
424 (f) of the Code) shall be eligible to receive Incentive Stock Options.


                                    ARTICLE 5

                                  STOCK OPTIONS

         5.1 Grant of  Options.  Options  may be granted  under the Plan for the
purchase of shares of Common  Stock.  Options  shall be granted in such form and
upon such terms and  conditions,  including  the  satisfaction  of  corporate or
individual performance objectives and other vesting standards,  as the Committee
shall from time to time determine.

         5.2  Designation  as  Non-qualified  Stock  Option or  Incentive  Stock
Option.  In connection with any grant of Options,  the Committee shall designate
in the written  agreement  required  pursuant  to Article 14 hereof  whether the
Options granted shall be Incentive Stock Options or Non-qualified Stock Options,
or in the case both are granted, the number of shares of each.

         5.3 Option  Price.  The purchase  price per share under each  Incentive
Stock Option shall be the Market  Price (as  hereinafter  defined) of the Common
Stock on the date the Incentive Stock Option is granted.  The purchase price per
share  under  each  Non-qualified  Stock  Option  shall  be  determined  by  the
Committee.  In no case, however, shall the purchase price per share of either an
Incentive Stock Option or Non-qualified  Stock Option be less than the par value
of the Common Stock ($0.01). In the case of an Incentive Stock Option granted to
an employee  owning  (actually or  constructively  under  Section  424(d) of the
Code),  more than 10% of the total combined voting power of all classes of stock
of the  Corporation or of a subsidiary (a "10%  Stockholder"),  the option price
shall not be less than 110% of the Market  Price of the Common Stock on the date
of grant.

                  The  "Market  Price" of the  Common  Stock on any day shall be
determined  as  follows:  (i)  if the  Common  Stock  is  listed  on a  national
securities  exchange or quoted through the NASDAQ  National  Market System,  the
Market Price on any day shall be, in the sole discretion of the


                                        4

<PAGE>



Committee,  either  (x) the  average of the high and low  reported  Consolidated
Trading sales prices, or if no such sale is made on such day, the average of the
closing bid and asked prices  reported on the  Consolidated  Trading listing for
such day or (y) the closing price reported on the  Consolidated  Trading listing
for such day;  (ii) if the  Common  Stock is quoted  on the  NASDAQ  interdealer
quotation  system,  the  Market  Price on any day  shall be the  average  of the
representative  bid and asked  prices at the close of business  for such day; or
(iii) if the Common Stock is not listed on a national  stock  exchange or quoted
on NASDAQ,  the Market Price on any day shall be the average of the high bid and
low asked prices reported by the National  Quotation Bureau,  Inc. for such day.
In no event  shall the  Market  Price of a share of Common  Stock  subject to an
Incentive  Stock  Option be less than the fair market  value as  determined  for
purposes of Section 422(b)(4) of the Code.

                  The Option price so  determined  shall also be  applicable  in
connection  with the exercise of any Tandem Stock  Appreciation  Rights  granted
with respect to such Option.

         5.4  Limitation on Amount of Incentive  Stock  Options.  In the case of
Incentive Stock Options,  the aggregate Market Price (determined at the time the
Incentive  Stock  Option is granted) of the Common  Stock with  respect to which
Incentive  Stock  Options  are  exercisable  for the first time by any  optionee
during any calendar year (under all plans of the Corporation and any subsidiary)
shall not exceed $100,000.

         5.5 Limitation on Time of Grant.  No grant of an Incentive Stock Option
shall be made under the Plan more than ten (10) years after the date the Plan is
approved by the stockholders of the Corporation.

         5.6 Exercise and Payment. Options may be exercised in whole or in part.
Common Stock  purchased  upon the  exercise of Options  shall be paid for at the
time of purchase.  Such payment shall be made in cash or, in the sole discretion
of the  Committee,  through  delivery  of shares of  Common  Stock,  installment
payments under the optionee's  promissory note or a combination of cash,  Common
Stock  and/or  installment   payments,  in  accordance  with  procedures  to  be
established by the Committee.  Any shares so delivered  shall be valued at their
Market Price on the date of  exercise.  Upon receipt of a notice of exercise and
payment in accordance  with  procedures to be established by the Committee,  the
Corporation  or its agent shall deliver to the person  exercising the Option (or
his or her designee) a certificate for such shares.

                  The  Committee in its sole  discretion  may, on an  individual
basis  or  pursuant  to a  general  program  established  by  the  Committee  in
connection with the Plan, lend money to an optionee to exercise all or a portion
of an Option granted  hereunder.  If the exercise price is paid in whole or part
with an  optionee's  promissory  note,  such  note  shall (i)  provide  for full
recourse  to the maker,  (ii) be  collateralized  by the pledge of the shares of
Common Stock that the optionee  purchases  upon  exercise of such Option,  (iii)
bear  interest at a rate no less than the  applicable  Federal  rate (within the
meaning of Section  1274 of the Code),  and (iv) contain such other terms as the
Committee in its sole  discretion  shall require.  In the event that payment for
exercised  Options is made through the delivery of shares of Common  Stock,  the
Committee, in accordance with procedures established by the Committee, may grant
Non-qualified Stock Options ("Restoration Options") to the person exercising the
Option for the purchase of a number of shares equal to the


                                        5

<PAGE>



number of shares of Common Stock delivered to the Corporation in connection with
the payment of the exercise  price of the Option and the payment of or surrender
of shares for any withholding  taxes due upon such exercise.  The purchase price
per share under each Restoration  Option shall be the Market Price of the Common
Stock on the date the Restoration Option is granted.

         5.7 Term. The term of each Option granted hereunder shall be determined
by the Committee;  provided,  however, that, notwithstanding any other provision
of the Plan, in no event shall an Incentive  Stock Option be  exercisable  after
ten (10) years from the date it is granted, or in the case of an Incentive Stock
Option granted to a 10% Stockholder, five (5) years from the date it is granted.

         5.8 Rights as a  Stockholder.  A  recipient  of  Options  shall have no
rights as a stockholder with respect to any shares issuable or transferable upon
exercise thereof until the date a stock certificate  representing such shares is
issued to such recipient.  Except as otherwise expressly provided in the Plan or
by the Committee, no adjustment shall be made for cash dividends or other rights
for which the record date is prior to the date such stock certificate is issued.

         5.9 General  Restrictions.  Each Option granted under the Plan shall be
subject to the requirement  that, if at any time the Board shall  determine,  in
its sole  discretion,  that the listing,  registration or  qualification  of the
shares  issuable or  transferable  upon  exercise  thereof  upon any  securities
exchange  or under any state or Federal  law,  or the consent or approval of any
governmental regulatory body, is necessary or desirable as a condition of, or in
connection with, the granting of such Option or the issue, transfer, or purchase
of shares  thereunder,  such  Option  may not be  exercised  in whole or in part
unless such listing,  registration,  qualification,  consent,  or approval shall
have been  effected or obtained  free of any  conditions  not  acceptable to the
Board.

                  The  Board  or the  Committee  may,  in  connection  with  the
granting  of any  Option,  require  the  individual  to whom the Option is to be
granted  to enter  into an  agreement  with the  Corporation  stating  that as a
condition  precedent to each exercise of the Option,  in whole or in part,  such
individual  shall  if  then  required  by  the  Corporation   represent  to  the
Corporation in writing that such exercise is for investment  only and not with a
view to distribution,  and also setting forth such other terms and conditions as
the Board or the Committee may prescribe.

         5.10 Cancellation of Stock Appreciation Rights. Upon exercise of all or
a portion of an Option,  the related Tandem Stock  Appreciation  Rights shall be
cancelled with respect to an equal number of shares of Common Stock.


                                    ARTICLE 6

                            STOCK APPRECIATION RIGHTS

         6.1 Grants of Stock  Appreciation  Rights.  Tandem  Stock  Appreciation
Rights may be awarded by the  Committee in  connection  with any Option  granted
under the Plan,  either at the time the Option is granted or  thereafter  at any
time prior to the exercise, termination or expiration of the


                                        6

<PAGE>



Option. Nontandem Stock Appreciation Rights may also be granted by the Committee
at any time. At the time of grant of Nontandem Stock  Appreciation  Rights,  the
Committee  shall  specify the number of shares of Common  Stock  covered by such
right and the base price of shares of Common Stock to be used in connection with
the calculation  described in Section 6.4 below. The base price of any Nontandem
Stock  Appreciation  Rights shall be not less than 100% of the Market Price of a
share of Common Stock on the date of grant. Stock  Appreciation  Rights shall be
subject to such terms and conditions not inconsistent  with the other provisions
of the Plan as the Committee shall determine.

         6.2 Limitations on Exercise.  Tandem Stock Appreciation Rights shall be
exercisable  only to the extent that the related Option is exercisable and shall
be exercisable only for such period as the Committee may determine (which period
may  expire  prior  to the  expiration  date of the  related  Option).  Upon the
exercise of all or a portion of Tandem Stock  Appreciation  Rights,  the related
Option  shall be  cancelled  with respect to an equal number of shares of Common
Stock.  Shares  of  Common  Stock  subject  to  Options,  or  portions  thereof,
surrendered  upon  exercise of Tandem  Stock  Appreciation  Rights  shall not be
available for subsequent  awards under the Plan.  Nontandem  Stock  Appreciation
Rights shall be exercisable during such period as the Committee shall determine.

         6.3 Surrender or Exchange of Tandem Stock Appreciation  Rights.  Tandem
Stock  Appreciation  Rights  shall  entitle the  recipient  to  surrender to the
Corporation  unexercised  the related  Option,  or any portion  thereof,  and to
receive  from the  Corporation  in  exchange  therefor  that number of shares of
Common Stock having an aggregate Market Price equal to (A) the excess of (i) the
Market  Price of one (1) share of Common  Stock as of the date the Tandem  Stock
Appreciation Rights are exercised over (ii) the option price per share specified
in such Option,  multiplied  by (B) the number of shares of Common Stock subject
to the Option, or portion thereof, which is surrendered. Cash shall be delivered
in lieu of any fractional shares.

         6.4 Exercise of Nontandem Stock  Appreciation  Rights.  The exercise of
Nontandem Stock Appreciation  Rights shall entitle the recipient to receive from
the Corporation that number of shares of Common Stock having an aggregate Market
Price equal to (A) the excess of (i) the Market Price of one (1) share of Common
Stock  as of the date on which  the  Nontandem  Stock  Appreciation  Rights  are
exercised over (ii) the base price of the shares covered by the Nontandem  Stock
Appreciation  Rights,  multiplied  by (B) the  number of shares of Common  Stock
covered by the Nontandem Stock Appreciation Rights, or the portion thereof being
exercised. Cash shall be delivered in lieu of any fractional shares.

         6.5 Settlement of Stock  Appreciation  Rights. As soon as is reasonably
practicable after the exercise of any Stock Appreciation Rights, the Corporation
shall (i) issue, in the name of the recipient,  stock certificates  representing
the total  number  of full  shares of  Common  Stock to which the  recipient  is
entitled  pursuant to Section  6.3 or 6.4 hereof and cash in an amount  equal to
the  Market  Price,  as of the date of  exercise,  of any  resulting  fractional
shares,  and (ii) if the Committee causes the Corporation to elect to settle all
or part of its obligations arising out of the exercise of the Stock Appreciation
Rights in cash  pursuant  to Section  6.6 hereof,  deliver to the  recipient  an
amount in cash equal to the Market  Price,  as of the date of  exercise,  of the
shares of Common Stock it would otherwise be obligated to deliver.


                                        7

<PAGE>



         6.6 Cash Settlement.  The Committee, in its sole discretion,  may cause
the  Corporation to settle all or any part of its obligation  arising out of the
exercise of Stock  Appreciation  Rights by the payment of cash in lieu of all or
part of the shares of Common Stock it would otherwise be obligated to deliver in
an amount equal to the Market Price of such shares on the date of exercise.


                                    ARTICLE 7

           NONTRANSFERABILITY OF OPTIONS AND STOCK APPRECIATION RIGHTS

                  No Option or Stock  Appreciation  Rights  may be  transferred,
assigned,  pledged or  hypothecated  (whether by operation of law or otherwise),
except as provided by will or the applicable  laws of descent and  distribution,
and no  Option or Stock  Appreciation  Rights  shall be  subject  to  execution,
attachment or similar  process.  Any  attempted  assignment,  transfer,  pledge,
hypothecation or other disposition of an Option or Stock Appreciation Rights not
specifically  permitted  herein  shall be null and void and without  effect.  An
Option or Stock  Appreciation  Rights may be  exercised  by the  recipient  only
during his or her lifetime,  or following  his or her death  pursuant to Section
8.3 hereof.

                  Notwithstanding  anything  to the  contrary  in the  preceding
paragraph,  the  Committee  may,  in its  sole  discretion,  cause  the  written
agreement  relating to any  Non-qualified  Stock  Options or Stock  Appreciation
Rights  granted  hereunder to provide that the  recipient of such  Non-qualified
Stock   Options  or  Stock   Appreciation   Rights  may  transfer  any  of  such
Non-qualified  Stock Options or Stock Appreciation  Rights other than by will or
the laws of descent and  distribution in any manner  authorized under applicable
law; provided,  however, that in no event may the Committee permit any transfers
which  would cause the Plan to fail to satisfy the  applicable  requirements  of
Rule  16b-3  under the 1934 Act or which  would  cause any  recipient  of awards
hereunder to fail to be entitled to the benefits  Rule 16b-3 or other  exemptive
rules under Section 16 of the 1934 Act or be subject to liability thereunder.


                                    ARTICLE 8

                      EFFECT OF TERMINATION OF EMPLOYMENT,
                        DISABILITY, RETIREMENT, OR DEATH

         8.1 General Rule. Except as expressly provided in the written agreement
relating to any Option or Stock  Appreciation  Rights or as otherwise  expressly
determined  by the  Committee  in its  sole  discretion,  in  the  event  that a
recipient of Options or Stock  Appreciation  Rights  ceases to be an employee or
consultant of the Corporation and its  subsidiaries (a "Terminated  Person") for
any reason other than  Disability  or  Retirement  (as  hereinafter  defined) or
death, any Options or Stock  Appreciation  Rights which were held by such Person
on the date on which he or she  ceased  to be an  employee  or  consultant  (the
"Termination  Date") and which  were  otherwise  exercisable  on such Date shall
expire unless  exercised  within the period of 30 days following the Termination
Date,  but in no event  after  the  expiration  of the  exercise  period of such
Options or Stock Appreciation Rights.


                                        8

<PAGE>



                  Except as expressly provided in the written agreement relating
to the Options or Stock Appreciation Rights or as otherwise expressly determined
by the  Committee  in its  sole  discretion,  the  Committee  may,  in its  sole
discretion,  cause any Option or Stock Appreciation  Rights to be forfeited upon
an employee's  termination  of employment or the  termination  of a consultant's
consulting  arrangement if the employee or consultant was terminated for one (or
more) of the following reasons:  (i) the employee's or consultant's  conviction,
or plea of guilty or nolo  contendere to the commission,  of a felony,  (ii) the
employee's  or  consultant's  commission  of  any  fraud,   misappropriation  or
misconduct which causes  demonstrable injury to the Corporation or a subsidiary,
(iii) an act of dishonesty  by the employee or consultant  resulting or intended
to result, directly or indirectly, in gain or personal enrichment at the expense
of the  Corporation  or a  subsidiary,  (iv) any  breach  of the  employee's  or
consultant's  fiduciary  duties  to  the  Corporation,  (v)  the  employee's  or
consultant's  willful  failure to perform  those  duties  which the  employee or
consultant  is  required  to  perform  as  an  employee  or  consultant  of  the
Corporation  or a  subsidiary,  (vi) in the case of an  employee,  a failure  to
devote his full time and  attention  exclusively  to the business and affairs of
the Corporation or a subsidiary; provided, however, that "cause," in the case of
an employee or consultant who has an employment or consulting agreement with the
Corporation or a subsidiary  thereof,  shall have the meaning, if any, set forth
in such  employment  or  consulting  agreement.  It  shall  be  within  the sole
discretion of the Committee to determine  whether an employee's or  consultant's
termination  was for one of the  foregoing  reasons,  and  the  decision  of the
Committee shall be final and conclusive.

         8.2 Disability or Retirement. Except as expressly provided otherwise in
the  written  agreement  relating  to any  Option or Stock  Appreciation  Rights
granted  under the Plan or as otherwise  determined by the Committee in its sole
discretion,   in  the  event  of  a  termination  of  employment  or  consulting
arrangement  of a Terminated  Person due to the Disability or Retirement of such
Person, any Options or Stock Appreciation  Rights which were held by such Person
on the Termination Date and which were otherwise  exercisable on such Date shall
expire unless  exercised  within the period of 180 days following such Date, but
in no event after the expiration  date of the exercise period of such Options or
Stock Appreciation Rights; provided, however, that any Incentive Stock Option of
such  Terminated  Person shall no longer be treated as an Incentive Stock Option
unless  exercised within three (3) months of the Termination Date (or within one
(1) year in the case of an  employee  who is  "disabled"  within the  meaning of
Section 22(e)(3) of the Code).

                  "Disability"  shall  mean any  termination  of  employment  or
consulting  arrangement  with  the  Corporation  or a  subsidiary  because  of a
long-term  or total  disability,  as  determined  by the  Committee  in its sole
discretion.  "Retirement"  shall mean a termination  of employment or consulting
arrangement with the Corporation or a subsidiary with the written consent of the
Committee in its sole  discretion.  The decision of the Committee shall be final
and conclusive.

         8.3  Death.  Except as  expressly  provided  in the  written  agreement
relating to the Options or Stock Appreciation  Rights or as otherwise  expressly
determined by the Committee in its sole discretion, in the event of the death of
a  recipient  of Options  or Stock  Appreciation  Rights  while an  employee  or
consultant  of  the  Corporation  or  any  subsidiary,   any  Options  or  Stock
Appreciation  Rights  which  were  held by such  Person at the date of death and
which  were  otherwise  exercisable  on such date  shall be  exercisable  by the
beneficiary designated by the employee or consultant for


                                        9

<PAGE>



such purpose (the  "Designated  Beneficiary")  or if no  Designated  Beneficiary
shall  be  appointed  or if the  Designated  Beneficiary  shall  predecease  the
employee,  by the employee's personal  representatives,  heirs or legatees for a
period of one (1) year from the date of death,  but in no event  later  than the
expiration  date of the exercise  period of such  Options or Stock  Appreciation
Rights,  at which time such Options or Stock  Appreciation  Rights shall expire;
provided,  however,  that any Incentive  Stock Option of such recipient shall no
longer be treated as an Incentive Stock Option unless exercised within three (3)
months of the date of the recipient's death.

                  In the event of the death of a Terminated  Person  following a
termination of employment due to Disability or Retirement,  any Options or Stock
Appreciation  Rights which were held by such Person on the Termination  Date and
which were  exercisable on such Date shall be  exercisable  by such  recipient's
Designated Beneficiary, or if no Designated Beneficiary shall be appointed or if
the Designated Beneficiary shall predecease such recipient,  by such recipient's
personal  representatives,  heirs or legatees  for a period of one (1) year from
the date of death but in no event later than the expiration date of the exercise
period of such Options or Stock Appreciation  Rights, at which time such Options
or Stock Appreciation Rights shall expire; provided, however, that any Incentive
Stock  Option  of such  Terminated  Person  shall no  longer  be  treated  as an
Incentive  Stock Option within three (3) months of the date of such  Termination
Date (or within one (1) year in the case of an employee who is "disabled" within
the meaning of Section 22(e)(3) of the Code).

         8.4 Termination of Unvested Options. All Options and Stock Appreciation
Rights which were not  exercisable by a Terminated  Person as of the Termination
Date of such  Terminated  Person  shall  terminate  as of such  Date,  except as
expressly  provided  in the written  agreement  relating to the Options or Stock
Appreciation Rights or as otherwise expressly determined by the Committee in its
sole discretion.  Options and Stock Appreciation Rights shall not be affected by
any change of employment  so long as the  recipient  continues to be employed by
either the Corporation or a subsidiary.


                                    ARTICLE 9

                                RESTRICTED SHARES

         9.1 Grant or Sale of Restricted  Shares. The Committee may from time to
time cause the Corporation to grant or to sell Restricted  Shares under the Plan
to employees and consultants, subject to such restrictions, conditions and other
terms as the Committee may determine. The purchase price, if any, for Restricted
Shares shall be determined by the Committee in its sole discretion.

         9.2 Restrictions. At the time a grant of Restricted Shares is made, the
Committee shall  establish a period over which such Restricted  Shares will vest
(the "Restricted  Period").  Each grant of Restricted Shares may be subject to a
different  Restricted Period. The Committee may, in its sole discretion,  at the
time a grant is made  prescribe  restrictions  in  addition to or other than the
expiration of the Restricted Period,  including the satisfaction of corporate or
individual  performance  objectives,  which  shall be  applicable  to all or any
portion of the Restricted Shares. The Committee may also,


                                       10

<PAGE>



in its sole discretion,  at any time shorten or terminate the Restricted  Period
or  waive  any  other  restrictions  applicable  to all  or a  portion  of  such
Restricted  Shares.  None of the  Restricted  Shares  may be sold,  transferred,
assigned,  pledged or otherwise  encumbered or disposed of during the Restricted
Period or prior to the satisfaction of any other restrictions  prescribed by the
Committee with respect to such Restricted Shares.

         9.3 Restricted Stock Certificates.  The Corporation shall issue, in the
name of each employee or consultant to whom Restricted  Shares have been granted
or sold, stock  certificates  representing the total number of Restricted Shares
granted or sold to the employee or consultant, as soon as reasonably practicable
after the grant or sale.  The  Corporation,  at the direction of the  Committee,
shall hold such certificates, properly endorsed for transfer, for the employee's
or consultant's  benefit until such time as the Restricted  Shares are forfeited
to or repurchased by the Corporation or the restrictions lapse.

         9.4 Rights of  Holders  of  Restricted  Shares.  Holders of  Restricted
Shares  shall have the right to vote such  shares  and the right to receive  any
cash dividends with respect to such shares. All distributions,  if any, received
by an employee or consultant  with respect to  Restricted  Shares as a result of
any stock split, stock  distribution,  a combination of shares, or other similar
transaction shall be subject to the restrictions of this Article 9.

         9.5 Forfeiture; Repurchase. Except as expressly provided in the written
agreement relating to the Options or Stock  Appreciation  Rights or as otherwise
expressly  determined by the Committee in its sole  discretion,  any  Restricted
Shares held by an employee or consultant pursuant to the Plan shall be forfeited
or subject to  repurchase  by the  Corporation  at a price equal to the original
price paid therefor by the employee or consultant upon the termination of his or
her  employment  or  consulting   arrangement   with  the   Corporation  or  its
subsidiaries,  as the case may be, prior to the expiration or termination of the
Restricted  Period and the  satisfaction of any other  conditions  applicable to
such Restricted Shares.  Upon any such forfeiture or repurchase,  the Restricted
Shares shall be retained in the treasury of the  Corporation  and  available for
subsequent  awards  under the  Plan,  unless  the  Committee  directs  that such
Restricted Shares be cancelled.

         9.6 Delivery of Restricted  Shares.  Upon the expiration or termination
of  the  Restricted   Period   applicable  to  any  Restricted  Shares  and  the
satisfaction  of any  other  conditions  prescribed  by the  Committee  that are
applicable to such Shares, the restrictions  applicable to the Restricted Shares
shall lapse and a stock  certificate  for the number of  Restricted  Shares with
respect to which the  restrictions  have lapsed shall be delivered,  free of all
such restrictions,  to the employee,  consultant,  beneficiary or estate, as the
case may be.


                                   ARTICLE 10

                               UNRESTRICTED SHARES

         10.1 Grant or Sale of Unrestricted  Shares. The Committee may cause the
Corporation to grant or to sell Unrestricted Shares to employees and consultants
at such time or times, in such


                                       11

<PAGE>



amounts and for such reasons as the  Committee,  in its sole  discretion,  shall
determine.  The  purchase  price,  if any,  for  Unrestricted  Shares  shall  be
determined by the Committee in its sole discretion.

         10.2 Delivery of Unrestricted  Shares.  The Corporation shall issue, in
the name of each employee or consultant  to whom  Unrestricted  Shares have been
granted  or  sold,   stock   certificates   representing  the  total  number  of
Unrestricted  Shares  granted or sold to the employee or  consultant,  and shall
deliver such  certificates  to the employee or  consultant as soon as reasonably
practicable  after  the  date of  grant  or sale  or on such  later  date as the
Committee shall determine at the time of grant or sale.


                                   ARTICLE 11

                               TAX OFFSET PAYMENTS

         The  Committee  shall have the authority at the time of any award under
the Plan or anytime  thereafter to make Tax Offset Payments to assist  employees
in paying income taxes incurred as a result of their  participation in the Plan.
The Tax Offset Payments shall be determined by applying a percentage established
by the Committee to all or a portion (as the Committee  shall  determine) of the
taxable   income   recognizable   by  an  employee  upon  (i)  the  exercise  of
Non-qualified  Stock Options or Stock Appreciation  Rights, (ii) the disposition
of shares received upon exercise of Incentive Stock Options,  (iii) the lapse of
restrictions  on  Restricted  Shares or (iv) the  award or sale of  Unrestricted
Shares. The percentage shall be established, from time to time, by the Committee
at that rate  which the  Committee,  in its sole  discretion,  determines  to be
appropriate and in the best interests of the Corporation to assist  employees in
paying  income  taxes  incurred  as a  result  of the  events  described  in the
preceding sentence.  Tax Offset Payments shall be subject to the restrictions on
transferability  applicable  to  Options  and Stock  Appreciation  Rights  under
Article 7.


                                   ARTICLE 12

                    ADJUSTMENT UPON CHANGES IN CAPITALIZATION

         Notwithstanding any other provision of the Plan, the Committee may: (i)
at any time,  make or provide for such  adjustments to the Plan or to the number
and class of  shares  available  thereunder  or (ii) at the time of grant of any
Options,  Stock  Appreciation  Rights or  Restricted  Shares,  provide  for such
adjustments to such Options,  Stock Appreciation Rights or Restricted Shares, in
each case as the  Committee  shall  deem  appropriate  to  prevent  dilution  or
enlargement of rights, including,  without limitation,  adjustments in the event
of stock dividends, stock splits,  recapitalizations,  mergers,  consolidations,
combinations or exchanges of shares,  separations,  spin-offs,  reorganizations,
liquidations and the like.





                                       12

<PAGE>



                                   ARTICLE 13

                            AMENDMENT AND TERMINATION

         The Board may suspend,  terminate,  modify or amend the Plan,  provided
that any amendment  that would (i) materially  increase the aggregate  number of
shares which may be issued under the Plan, (ii) materially increase the benefits
accruing  to  employees  under  the  Plan,  or  (iii)   materially   modify  the
requirements as to eligibility for  participation  in the Plan, shall be subject
to the approval of the Corporation's stockholders, except that any such increase
or modification that may result from adjustments authorized by Article 12 hereof
shall not require such  stockholder  approval.  If the Plan is  terminated,  the
terms of the Plan shall, notwithstanding such termination,  continue to apply to
awards  granted  prior  to  such   termination.   No  suspension,   termination,
modification  or amendment of the Plan may,  without the consent of the employee
or consultant to whom an award shall  theretofore  have been granted,  adversely
affect the rights of such employee or consultant under such award.


                                   ARTICLE 14

                                WRITTEN AGREEMENT

         Each award of Options,  Stock Appreciation  Rights,  Restricted Shares,
Unrestricted  Shares and Tax Offset  Payments  shall be  evidenced  by a written
agreement  containing such  restrictions,  terms and conditions,  if any, as the
Committee may require.  In the event of any conflict between a written agreement
and the Plan, the terms of the Plan shall govern.


                                   ARTICLE 15

                            MISCELLANEOUS PROVISIONS

         15.1 Tax Withholding.  The Corporation  shall have the right to require
employees  or  their  beneficiaries  or  legal  representatives  to remit to the
Corporation an amount sufficient to satisfy Federal, state and local withholding
tax requirements,  or to deduct from all payments under the Plan,  including Tax
Offset Payments, amounts sufficient to satisfy all withholding tax requirements.
Whenever  payments  under the Plan are to be made to an employee  in cash,  such
payments  shall be net of any amounts  sufficient to satisfy all Federal,  state
and  local  withholding  tax  requirements.  The  Committee  may,  in  its  sole
discretion,  permit an employee to satisfy his or her tax withholding obligation
either by (i)  surrendering  shares  owned by the  employee  or (ii)  having the
Corporation withhold from shares otherwise  deliverable to the employee.  Shares
surrendered  or withheld shall be valued at their Market Price as of the date on
which income is required to be recognized for income tax purposes.

         15.2 Compliance With Section 16(b). In the case of employees who are or
may be subject to Section 16 of the 1934 Act,it is the intent of the Corporation
that the Plan and any award


                                       13

<PAGE>



granted  hereunder  satisfy and be  interpreted  in a manner that  satisfies the
applicable  requirements  of Rule 16b-3 so that such persons will be entitled to
the benefits of Rule 16b-3 or other exemptive rules under Section 16 of the 1934
Act and will not be subjected to liability  thereunder.  If any provision of the
Plan or any award would  otherwise  conflict with the intent  expressed  herein,
that provision, to the extent possible,  shall be interpreted and deemed amended
so as to avoid  such  conflict.  To the extent of any  remaining  irreconcilable
conflict with such intent,  such provision shall be deemed void as applicable to
employees who are or may be subject to Section 16 of the 1934 Act.

         15.3  Successors.  The  obligations of the  Corporation  under the Plan
shall be binding upon any successor  corporation or organization  resulting from
the merger,  consolidation or other  reorganization of the Corporation,  or upon
any successor corporation or organization succeeding to all or substantially all
of the  assets  and  business  of the  Corporation.  In the  event of any of the
foregoing, the Committee may, in its discretion prior to the consummation of the
transaction  and  subject  to  Article 13  hereof,  cancel,  offer to  purchase,
exchange,  adjust or modify  any  outstanding  awards,  at such time and in such
manner as the Committee deems appropriate and in accordance with applicable law.

         15.4 General Creditor Status.  Employees and consultants  shall have no
right,  title,  or  interest  whatsoever  in or to  any  investments  which  the
Corporation  may make to aid it in  meeting  its  obligations  under  the  Plan.
Nothing  contained in the Plan, and no action taken pursuant to its  provisions,
shall  create or be  construed  to create a trust of any  kind,  or a  fiduciary
relationship between the Corporation and any employee,  consultant,  beneficiary
or legal  representative of such employee or consultant.  To the extent that any
person acquires a right to receive payments from the Corporation under the Plan,
such right shall be no greater than the right of an unsecured  general  creditor
of the  Corporation.  All payments to be made  hereunder  shall be paid from the
general  funds of the  Corporation  and no  special  or  separate  fund shall be
established and no segregation of assets shall be made to assure payment of such
amounts except as expressly set forth in the Plan.

         15.5 No  Right to  Employment.  Nothing  in the Plan or in any  written
agreement  entered  into  pursuant  to Article  14 hereof,  nor the grant of any
award, shall confer upon any employee any right to continue in the employ of the
Corporation  or a subsidiary or to be entitled to any  remuneration  or benefits
not set forth in the Plan or such written  agreement or interfere  with or limit
the right of the Corporation or a subsidiary to modify the terms of or terminate
such employee's  employment at any time. The preceding sentence shall be equally
applicable with respect to consultants of the Corporation or a subsidiary.

         15.6  Other  Plans.  Effective  upon  the  adoption  of the Plan by the
stockholders,  no further awards shall be made under the Synaptic Pharmaceutical
Corporation  Amended and Restated Incentive Plan,  originally adopted on June 3,
1988,  and last  amended  and  restated  on June 16,  1992 (the  "Prior  Plan").
Thereafter,  all awards  made under the Prior Plan prior to the  adoption of the
Plan by the  stockholders  shall  continue in  accordance  with the terms of the
Prior Plan.

         15.7 Notices.  Notices  required or permitted to be made under the Plan
shall be  sufficiently  made if personally  delivered to the employee or sent by
regular  mail  addressed  (a) to the employee at the  employee's  address as set
forth in the books and records of the Corporation or its subsidiaries,


                                       14

<PAGE>


or (b) to  the  Corporation  or  the  Committee  at  the principal office of the
Corporation clearly marked "Attention: Compensation Committee."

         15.8 Severability. In the event that any provision of the Plan shall be
held illegal or invalid for any reason,  such illegality or invalidity shall not
affect the  remaining  parts of the Plan,  and the Plan shall be  construed  and
enforced as if the illegal or invalid provision had not been included.

         15.9  Governing  Law. To the extent not  preempted  by Federal law, the
Plan, and all agreements  hereunder,  shall be construed in accordance  with and
governed by the laws of the State of New Jersey.



                                       15


                                                           EXHIBIT 10.45
                                                           -------------


                            FIRST AMENDMENT TO LEASE

         THIS FIRST AMENDMENT TO LEASE (this  "Amendment") is entered into as of
November 25, 1998, by and between AREB215 COLLEGE ROAD, LLC, a Delaware  limited
liability  company  ("Landlord"),  and SYNAPTIC  PHARMACEUTICAL  CORPORATION,  a
Delaware corporation ("Tenant").

         WHEREAS, Century Associates,  a New Jersey partnership ("Century"),  as
landlord,  previously entered into those certain lease agreements and amendments
set forth on, and attached to,  Schedule 1 attached  hereto  (collectively,  the
"Overlease"),  pursuant to which Playtex Apparel, Inc., as successor-in-interest
to  International   Playtex   Corporation  and  International   Playtex  Company
("Apparel"),   as  tenant,   leased  and  hired  from  Century  the  land,   the
approximately  110,666 rentable square foot building and the other  improvements
thereon  located at 215 College Road,  Paramus,  New Jersey  (collectively,  the
"Paramus Facility");

         WHEREAS,  Tenant, as  successor-in-interest to Neurogenetic Corporation
under that certain Sublease dated October 31, 1991 (as amended,  the "Sublease")
attached  hereto as  Schedule  2, by and  between  Apparel,  as  sublessor,  and
Neurogenetic  Corporation,  as  sublessee,   occupies  as  of  the  date  hereof
approximately  41,274 rentable square feet (the "Current  Space") in the Paramus
Facility as depicted on Exhibit "A" hereto;

         WHEREAS,  Century  and  Tenant  previously  entered  into that  certain
Agreement  dated November 11, 1997 (the  "Agreement"),  with respect to Tenant's
possession  and  occupancy  of space at the  Paramus  Facility,  a copy of which
Agreement is attached  hereto as Schedule 3. Any  capitalized  term used but not
otherwise  defined  herein  shall  have  the  meaning  given  such  term  in the
Agreement;

         WHEREAS,  Playtex  Products,  Inc.,  an  entity  unrelated  to  Apparel
("Playtex"),  currently  occupies  certain  portions  of  the  Paramus  Facility
pursuant to certain agreements by and among Apparel, Playtex and Century;

         WHEREAS, Century succeeded  to Apparel's  interest in the Overlease and
the Overlease has been terminated;

                                       1

<PAGE>

         WHEREAS,  the  Agreement  provides  that, in the event the Overlease is
terminated,  the  Agreement,  together  with the  Sublease  and the terms of the
Overlease incorporated by reference in the Sublease (collectively, the "Lease"),
create and  constitute  a direct  lease  between  Century or its  successor,  as
lessor, and Tenant, as lessee;

         WHEREAS, Landlord previously acquired Century's fee simple ownership of
the Paramus Facility and has succeeded to all of Century's rights, interests and
obligations as landlord under the Lease;

         WHEREAS,  the Lease  obligates  Tenant to lease and hire from  Landlord
approximately 32,644(A) rentable square feet at the Paramus  Facility  currently
occupied by Playtex as depicted on Exhibit "B" attached hereto ("Expansion Space
A")  immediately  after the date on which Playtex  vacates the Paramus  Facility
(the "Playtex Vacation Date");

         WHEREAS,  Landlord  and Tenant  have  agreed  that,  upon the terms and
conditions set forth herein,  Tenant shall lease and hire from Landlord space in
the Paramus  Facility in addition to Expansion  Space A comprised of (i) an area
totaling  approximately  6,235  rentable  square feet as depicted on Exhibit "C"
attached hereto  ("Expansion Space B"), and (ii) an area totaling  approximately
3,690 rentable square feet as depicted on Exhibit "D" attached hereto("Expansion
Space C");

         WHEREAS, Landlord and Tenant wish to amend the Lease on  the  terms and
conditions hereinafter set forth;

         NOW, THEREFORE,  for good and valuable  consideration,  the receipt and
sufficiency of which are hereby  acknowledged,  Landlord and Tenant hereby agree
as follows:

         1.  Acknowledgment of Direct Lease.   Landlord    and    Tenant  hereby
acknowledge and agree that the Lease, as modified by this Amendment, constitutes
a direct  lease between  Landlord and  Tenant, and  that Tenant  is and shall be
bound  by all of the terms of (i) the Overlease which were applicable to Apparel
as tenant under the Overlease, notwithstanding the termination of the Overlease,
(ii) the Agreement, and (iii) the Sublease.

_____________________________
(A)Calculated by subtracting the Current Space (41,274 sq. ft.) from the Minimum
Rentable Square Feet defined in paragraph 5(a) of the Agreement (73,918 sq.ft ).


                                       2

<PAGE>




         2.  Delivery of Expansion Space.

                  a. Expansion Space A and B. Landlord shall deliver  possession
of Expansion  Space A and Expansion  Space B to Tenant,  and Tenant shall accept
delivery  and  possession  of such space,  on the date (the "Space A/B  Delivery
Date") which is the first Business Day (as  hereinafter  defined)  following the
Playtex Vacation Date; provided,  however, that Landlord shall not be liable for
any delay in the Space A/B Delivery  Date caused by Playtex's  failure to timely
vacate such space. From and after the date Expansion Space A and Expansion Space
B are actually  delivered by Landlord to Tenant (the "Actual  Space A/B Delivery
Date"),  both of Expansion  Space A and Expansion Space B shall become a part of
(and be included in) the Demised Premises and all references in the Lease to the
Demised  Premises  shall  thereafter  be deemed to include  the  Current  Space,
Expansion  Space A and  Expansion  Space B. From and after the Actual  Space A/B
Delivery Date,  Tenant shall be deemed to have complied with its  obligations to
lease the Minimum  Rentable  Square  Feet,  and all  references  in the Lease to
Minimum  Rentable  Square  Feet shall be deemed to mean the  aggregate  rentable
square feet of the Current Space, Expansion Space A and Expansion Space B.

                  b.  Expansion  Space C. Landlord  shall deliver  possession of
Expansion  Space  C to  Tenant  with  Landlord's  Space C Work  (as  hereinafter
defined) substantially complete, and Tenant shall accept delivery and possession
of such space, on the earlier to occur of (i) the first Business Day which is 18
months after the Playtex Vacation Date (the "Primary Space C Delivery Date"), or
(ii) the first Business Day which is 120 days after Tenant  delivers to Landlord
written notice of Tenant's desire to occupy Expansion Space C, which in no event
shall be earlier than the Playtex Vacation Date (the "Requested Space C Delivery
Date");  provided,  however, that Landlord shall not be liable to Tenant for any
delay in delivering  Expansion Space C on the Requested Space C Delivery Date if
Landlord is not reasonably able to  substantially  complete  Landlord's  Space C
Work prior to the  Requested  Space C  Delivery  Date,  and so long as  Landlord
continues to  diligently  proceed  with  Landlord's  Space C Work,  Tenant shall
remain obligated to lease and hire from Landlord Expansion C Space upon the date
Landlord's Space C Work is substantially  complete;  and further provided,  that
Landlord  shall in no event  be  liable  for any  delay in the  Primary  Space C
Delivery Date or the Requested Space C Delivery Date caused by Playtex's failure
to timely vacate Expansion Space C. From and after the date Expansion Space C is
actually  delivered by Landlord to Tenant (the "Actual Space C Delivery  Date"),
Expansion Space C shall become a part of

                                       3

<PAGE>

(and be included in) the Demised Premises and all references in the Lease to the
Demised  Premises  shall  thereafter  be deemed to include  the  Current  Space,
Expansion  Space A,  Expansion  Space B and  Expansion  Space C. As used herein,
"Landlord's  Space C Work" shall mean (i) the removal or legal  encapsulation of
any friable  asbestos  present in Expansion Space C, (ii) demolition and removal
of all alterations, including all lab benches and fixtures, in Expansion Space C
other than the cinder block walls,  and (iii) the construction of demising walls
necessary to separate Expansion Space C from other space in the Paramus Facility
not then occupied by Tenant.

         3.  Rent. That portion of Paragraph 4 A of the Sublease which was added
thereto  by Paragraph 6(a) of the Agreement, is  deleted  in  its  entirety  and
replaced with the following:

         "Tenant shall be liable for, and shall pay to Landlord, annual rent for
the Demised  Premises  in equal  monthly  installments  on the first day of each
month, without set-off, deduction or counterclaim, absolutely net, calculated as
follows:

                  (i) for the period from and after the date hereof, through and
including  the Playtex  Vacation  Date with  respect to the Current  Space,  the
annual rate of $13.73 per rentable square foot on the rentable square footage of
the Current Space.

                  (i) for the  period  from the day  immediately  following  the
Playtex Vacation Date through and including December 31, 2004:

                         (I) with respect to the Current Space,  the annual rate
of $13.00 per rentable square foot on the rentable square footage of the Current
Space; plus

                         (II) with  respect to Expansion  Space A and  Expansion
Space B, from and after the Actual Space A/B Delivery  Date,  the annual rate of
$13.00 per rentable  square foot on the aggregate of the rentable square footage
of Expansion Space A and Expansion Space B; plus

                         (III) with respect to Expansion Space C, from and after
the  date  which  is  18  months  after  the  Primary  Space  C  Delivery  Date,

                                       4

<PAGE>


irrespective  of the Actual Space C Delivery Date, the annual rate of $13.00 per
rentable square foot on the rentable square footage of Expansion Space C.

                  (ii)  for the  period  from and  including  January  1,  2005,
through and including  December 31, 2009, the annual rate of $16.00 per rentable
square foot on the then total rentable square feet of the Demised Premises; and

                  (iii) for the  period  from and  including  January  1,  2010,
through and including  December 31, 2015, the annual rate of $20.00 per rentable
square foot on the then total rentable square feet of the Demised Premises."

         4. Operating Costs for Expansion Space C.  Notwithstanding  anything to
the contrary set forth herein or in the Lease,  including,  without  limitation,
the  provisions  of  Paragraph 5 of the  Sublease  as amended by the  Agreement,
Tenant shall not be responsible for any Operating Costs (as defined in Paragraph
7 of the Agreement)  with respect to Expansion  Space C until the Actual Space C
Delivery  Date.  From and after the Actual Space C Delivery  Date,  the rentable
square  footage of Expansion  Space C shall be included in the Demised  Premises
for purposes of calculating  Tenant's pro rata share of Operating Costs pursuant
to the Lease.

         5.  Alterations.  Paragraph  6  of  the  Sublease,  as  amended  by the
Agreement, is hereby further amended as follows:


    a. The second to the last sentence of Paragraph 6A(b) which reads "Sublessor
consents to Gerald Fantel as a contractor" is hereby deleted.  Landlord will not
unreasonably withhold its consent to any contractor proposed by Tenant.

    b. Regardless  of  whether  Landlord's  consent  shall  be required  for any
alteration pursuant to the terms of Paragraph 6,Tenant shall give Landlord prior
written  notice  of  any  alteration  not  less  than  10 Business Days prior to
commencing work on such alteration.

    c. Tenant  shall  deliver  to  Landlord  as-built  plans  for  any  and  all
alterations promptly upon completion of such alteration.

                                       5

<PAGE>

         6. Tenant  Improvements.  Tenant acknowledges that neither Landlord nor
any agent of Landlord has made any  representation  or warranty  with respect to
the condition of all or any part of the Paramus Facility, or with respect to the
suitability  of all or any  part of the  Paramus  Facility  for the  conduct  of
Tenant's business,  and Tenant's taking possession of each of Expansion Space A,
Expansion Space B and Expansion Space C shall be conclusive evidence that Tenant
accepts each such  expansion  space in the condition in which each exists at the
time possession is taken.  All work to be performed to or in connection with the
Demised Premises,  including  Expansion Space A, Expansion Space B and Expansion
Space C, other than  Landlord's  Space C Work,  shall be  performed by Tenant in
accordance  with the terms  and  conditions  of the  Lease,  including,  without
limitation,  Paragraph 6 of the  Sublease as amended by the  Agreement  and this
Amendment.

         7. Tenant Improvement Allowance.  Landlord  shall  provide to Tenant an
allowance  in the amount of $129,116 (the "Tenant Improvement Allowance"), which
may  only  be used by Tenant to make improvements and alterations to the Demised
Premises  (exclusive  of  Landlord's  Space  C  Work).  The  Tenant  Improvement
Allowance  shall  be  payable  to  Tenant  by  Landlord  on the Actual Space A/B
Delivery Date.

         8. Parking.  Paragraph 23 of the Sublease is hereby  amended to provide
that Tenant  shall be  entitled to use parking  spaces in the parking lot on the
Paramus  Facility on a pro rata basis  based on the  aggregate  rentable  square
footage of the Current Space, Expansion Space A, Expansion Space B and Expansion
Space C,  notwithstanding the Actual Space A/B Delivery Date or the Actual Space
C Delivery Date, to the total rentable  square footage of the Paramus  Facility.
Three of such parking spaces shall be the reserved spaces  currently  marked for
Tenant. Landlord and Tenant acknowledge and agree that the parking facilities at
the Paramus Facility include a total of 301 parking spaces. All parking shall be
in accordance with the terms and conditions of the Lease.

                                       6


<PAGE>



         9.  Notice Provisions.   Paragraph  26 H of the Sublease, as amended by
Paragraph  17 of the Agreement, is hereby modified  to replace the addresses and
telephone numbers therein specified with the following:


                  "As to Landlord:

                  ARE-215 College Road, LLC
                  c/o Alexandria Real Estate Equities, Inc.
                  135 N. Los Robles Avenue, Suite 250
                  Pasadena, California 91101
                  Attn: General Counsel
                  Telephone: (626) 578-0777
                  Facsimile: (626) 578-0770

                  As to Tenant:

                  Synaptic Pharmaceutical Corporation
                  215 College Road
                  Paramus, New Jersey 07652
                  Attn:  Mr. Robert L. Spence
                  Telephone: (201) 261-1331
                  Facsimile: (201) 261-0623"

         10.  Ratification of  Agreement.  Except  as  specifically modified and
amended  pursuant  to  this Amendment, the terms and conditions of the Lease are
hereby ratified and confirmed by each of Landlord and Tenant.

         11. Brokers. Landlord and Tenant each hereby represent,  warrant to and
agree with each other that it has not had, and shall not have, any dealings with
any  third  party  to whom  the  payment  of any  broker's  fee,  finder's  fee,
commission or other similar compensation ("Commissions") shall or may become due
or payable  other than with  Insignia/ESG,  Inc.  and Cushman & Wakefield of New
Jersey, Inc. (collectively,  the "Brokers").  Landlord shall pay all Commissions
due to the Brokers in connection  with the  transaction  contemplated  hereby in
accordance  with the terms and  conditions  of a  separate  agreement.  Landlord
hereby  indemnifies and agrees to protect,  defend and hold Tenant harmless from
and against any and all claims, losses,  damages, costs and expenses (including,
without limitation,  reasonable attorneys' fees) incurred by Tenant by reason of
any breach or  inaccuracy  of the  representation,  warranty  and  agreement  of
Landlord  contained in this Paragraph.  Tenant hereby

                                       7

<PAGE>

indemnifies  and agrees to protect,  defend and hold Landlord  harmless from and
against any and all claims,  losses,  damages,  costs and  expenses  (including,
without limitation,  reasonable  attorneys' fees) incurred by Landlord by reason
of any breach or  inaccuracy  of the  representation,  warranty and agreement of
Tenant contained in this Paragraph.

         12.  Headings.  The  Paragraph  headings  of  this  Amendment  are  for
convenience  of  reference  only  and  shall  not  be deemed to modify, explain,
restrict, alter or affect the meaning or interpretation of any provision hereof.

         13.  Counterparts.  This  Amendment  may  be  executed   in   as   many
counterparts  as  may  be  deemed necessary and convenient, and by the different
parties  hereto on separate counterparts, each of which, when so executed, shall
be  deemed  an  original, but all such counterparts shall constitute one and the
same instrument.

         14.  Severability.  Any  provision  or  part of this Amendment which is
invalid  or unenforceable in any situation in any jurisdiction shall, as to such
situation  and  such  jurisdiction,  be  ineffective  only to the extent of such
invalidity  and shall not affect the  enforceability of the remaining provisions
hereof  or  the  validity  or  enforceability of any such provision in any other
situation or in any other jurisdiction.

         15.  Attorneys' Fees.   In  the  event  that any party hereto brings an
action  or proceeding against any other party to enforce or interpret any of the
terms,  agreements or provisions of the Lease, as amended by this Amendment, the
prevailing  party  in  such  action  shall be entitled to recover all reasonable
costs  and expenses of such action or proceeding, including, without limitation,
attorneys'  fees,  charges,  disbursements  and  the  fees  and  costs of expert
witnesses.

         16.  Construction.  This Amendment shall not be construed more strictly
against one party hereto than against any other party hereto merely by virtue of
the fact that it may have been prepared by counsel for one of the parties.


                                       8


<PAGE>




         17.  Business Day.   As used herein, the term "Business Day" shall mean
a day  that is  not a  Saturday, Sunday or legal holiday.  In the event that the
date  for the performance of any obligation under this Amendment shall fall on a
Saturday,  Sunday,  or  legal holiday, the date for performance thereof shall be
extended  to  the  next Business Day.  All references in the Amendment to "days"
other than "Business Days" shall mean calendar days.

         IN WITNESS  WHEREOF,  the parties  have  executed  and  delivered  this
Amendment as of the day and year first above written.

                   LANDLORD

                   ARE-215 COLLEGE ROAD, LLC, a Delaware limited
                   liability company

                   By: ALEXANDRIA REAL ESTATE EQUITIES, L.P., a Delaware limited
                       partnership, its managing member

                       By:  ARE-QRS CORP., a Maryland corporation,
                            its general partner

                            By:/s/Lynn Anne Shapiro
                               --------------------
                                  Lynn Anne Shapiro
                                  General Counsel

                   TENANT

                   SYNAPTIC PHARMACEUTICAL CORPORATION, a Delaware corporation



                   By:/s/Robert L. Spence
                      -------------------
                      Robert L. Spence




                                       9


<PAGE>

                                   Schedule 1

                                    OVERLEASE

1. Lease  Agreement  dated February 4, 1969, by and between  Century  Associates
("Century"),  as landlord,  and International  Playtex  Corporation  ("IPC"), as
tenant (copy attached).

2. Land  Lease  Agreement  dated  June 21,  1973,  by and  between  Century,  as
landlord, and IPC, as tenant (copy attached).

3. Lease Agreement dated October 7, 1974,  by and  between Century, as landlord,
and  International  Playtex  Company  a  Division  of Rapid-America  Corporation
("IPC-Rapid"), as tenant (copy attached).

4. Amendment to Lease dated August 7, 1973, by and between Century, as landlord,
and IPC, as tenant (copy attached).

5.  Amendment  to Lease  dated  August 30,  1973,  by and  between  Century,  as
landlord, and IPC, as tenant (copy attached).

6. Amendment to Lease Agreement  dated October 7, 1974, by and between  Century,
as landlord, and IPC-Rapid, as tenant [Landlord has no copy].

7. Letter Agreement dated May 30, 1974, by and between Century, as landlord, and
IPC-Rapid, as tenant [Landlord has no copy].


                                       10

<PAGE>



                                   Schedule 2

                                    SUBLEASE

                                           Sublease dated October  31,  1991, by
                                           and between  Playtex  Apparel,  Inc.,
                                           as sublessor,    and     Neurogenetic
                                           Corporation, as sublessee, as amended
                                           by  that   certain   First   Sublease
                                           Amendment dated August,  1994, by and
                                           between  Playtex  Apparel,  Inc.,  as
                                           sublessor,        and        Synaptic
                                           Pharmaceutical     Corporation,    as
                                           sublessee. (copy attached)




<PAGE>



                                   Schedule 3

                                    AGREEMENT

Agreement dated  November  11, 1997,  by  and  between  Century  Associates,  as
sublessor, and Synaptic Pharmaceutical Corporation, as sublessee.
                                 (copy attached)




<PAGE>



                                   Exhibit "A"

                                  CURRENT SPACE

                                    Attached.




<PAGE>



                                   Exhibit "B"

                                EXPANSION SPACE A

                                    Attached.




<PAGE>



                                   Exhibit "C"

                                EXPANSION SPACE B

                                    Attached.




<PAGE>


                                   Exhibit "D"

                                EXPANSION SPACE C

                                    Attached.



                                                           EXHIBIT 10.46
                                                           -------------


                        AMENDMENT NO. 5 AND SUPPLEMENT TO
                  RESEARCH COLLABORATION AND LICENSE AGREEMENT



                                                     Amendment    No.    5   and
                                                     Supplement     dated    and
                                                     effective as of December 1,
                                                     1998,    between   SYNAPTIC
                                                     PHARMACEUTICAL CORPORATION,
                                                     a   Delaware    corporation
                                                     ("Synaptic"),  and  MERCK &
                                                     CO.,  INC.,  a  New  Jersey
                                                     corporation ("Merck").


                                                       Recitals

                  WHEREAS,   Merck  and  Synaptic  are  parties  to  a  Research
Collaboration  and License  Agreement  dated as of November 30, 1993, as amended
(the "Agreement"); and

                  WHEREAS,  Merck and Synaptic  desire to extend the term of the
Research  Program  (capitalized  terms used and not  defined  herein  having the
meanings set forth in the Agreement)  under the Agreement as set forth herein in
order  to  continue  to  work  towards  the  identification  of  back-up  safety
assessment candidates;

                  NOW THEREFORE,  in consideration of the premises and covenants
set forth herein, the parties agree as follows:

         1.       The term of the  Research  Program is hereby  extended  for an
                  additional  three-month  period  expiring on February 28, 1999
                  (the  "Third  Extension  Period").  The  term  may be  further
                  extended  only upon the  mutual  agreement  of the  parties in
                  writing.

         2.       During the Third  Extension  Period,  as part of the  Research
                  Program,  Synaptic  shall  devote the efforts of two full time
                  equivalents  in  support  of  the  continuing  pharmacological
                  characterization of Merck compounds.

         3.       Merck shall pay to Synaptic,  within 30 days of the  effective
                  date of this Amendment No. 5, an amount equal to $125,000 (one
                  hundred twenty-five  thousand dollars) in consideration of the
                  support set forth in Article 2.

         4.       From and after the date first written above, all references in
                  the  Agreement  to "this  Agreement,"  "hereunder,"  "hereof,"
                  "herein," or words of similar import,  shall be a reference to
                  the  Agreement,  as  amended  by  this  Amendment  No.  5  and
                  Supplement.



<PAGE>


         5.       From and after the date first written above, all references in
                  the Agreement to "the Research  Program"  shall be a reference
                  to the Research Program  conducted during the period beginning
                  on November  30, 1993,  and ending on February  28,  1999,  in
                  accordance with the Agreement,  as amended and supplemented by
                  this Amendment No. 5 and Supplement.

         6.       Except as expressly amended and supplemented by this Amendment
                  No. 5 and Supplement, the Agreement shall remain in full force
                  and effect and unchanged.


                  IN WITNESS WHEREOF, the parties have caused this Amendment No.
5 and  Supplement  to be executed  and  delivered  as of the date first  written
above.

                                          SYNAPTIC PHARMACEUTICAL CORPORATION



                                         By:/s/Kathleen P. Mullinix
                                            ------------------------------
                                             Kathleen P. Mullinix
                                             Chairman, President and Chief
                                               Executive Officer



                                         MERCK & CO., INC.



                                         By:/s/Bennett M. Shapiro
                                            ----------------------------------
                                            Bennett M. Shapiro
                                            Executive Vice President, Worldwide
                                              Basic Research


                                                           EXHIBIT 10.47
                                                           -------------


                                ADDENDUM NO. 3 TO
                     RESEARCH, OPTION AND LICENSE AGREEMENT


         This  Addendum No. 3,  effective  as of January 1, 1999 (the  "Addendum
Effective Date"),  between ELI LILLY AND COMPANY, a corporation  organized under
the laws of the State of  Indiana,  having its  principal  place of  business at
Lilly  Corporate  Center,  Indianapolis,   Indiana  46285,  and  its  Affiliates
(hereinafter collectively called "LILLY"),

                                       AND

SYNAPTIC   PHARMACEUTICAL    CORPORATION   (formerly   known   as   Neurogenetic
Corporation),  a corporation  organized under the laws of the State of Delaware,
having its principal place of business at 215 College Road, Paramus,  New Jersey
07652, and its Affiliates (hereinafter collectively called "SYNAPTIC").

                                    Recitals

         1. LILLY and  SYNAPTIC  are parties to a  Research,  Option and License
Agreement dated as of January 25, 1991(the "Original Agreement"),  as amended by
the Addendum to Research, Option and License Agreement,  effective as of January
1, 1995  ("Addendum No. 1"), and Addendum No. 2 to Research,  Option and License
Agreement,  effective as of October 31, 1996  ("Addendum  No. 2"; and,  together
with the  Original  Agreement  and  Addendum  No. 1, the  "Current  Agreement"),
pursuant  to which they have  collaborated  in a  research  effort  directed  at
certain  serotonin (5-  hydroxytryptamine  or 5-HT)  receptors and  5-HT-related
disorders.  Capitalized  terms used and not defined in this  Addendum No. 3 have
the meanings ascribed to them in the Current Agreement.

                                        1

<PAGE>



         2. The Agreement  provides that the Project shall terminate on December
31,  1998,  but  may  be  extended  for  additional  periods  which  contemplate
additional  funding by LILLY and continuing  studies by SYNAPTIC and LILLY.  The
parties  desire to extend the term of the Project  until July 31,  1999,  on the
terms and conditions set forth herein.

         3. In  addition,  the parties  desire to  expressly  state that LILLY's
right to submit compounds under a certain  provision  contained in the March 13,
1996 letter agreement,  as amended (the "March 1996 Letter Agreement"),  between
them is not,  by  virtue  of the  extension  of the term of the  Project,  being
extended.

         NOW,  THEREFORE,  in  consideration  of the  premises  and  the  mutual
covenants hereinafter recited, the parties agree as follows:

         Section 1.  Definitions.

         (a) Modification of Definition.  The definition of "Project"  contained
in  Section  1.05 of the  Current  Agreement  is hereby  amended  to read in its
entirety as follows:

                  '"Project"  means (i) with respect to the period  beginning on
         January 25, 1991,  and ending on December  31,  1994,  the research and
         development program conducted by SYNAPTIC in the Field in collaboration
         with  LILLY  during  such  period  and (ii) with  respect to the period
         beginning  on  January  1,  1995,  the  continuation  of such  program;
         provided,  however, that from January 1, 1995, until December 31, 1998,
         such program shall be limited to the continued provision by SYNAPTIC to
         LILLY of support in (A) the  evaluation by SYNAPTIC of LILLY  Compounds
         at  Project  Receptors  and at  the  5-HT4  Receptors  in  binding  and
         functional  assays, (B) tissue  localization  studies involving Project
         Receptors,   (C)  the  conduct  of  neurotransmitter   release  studies
         involving   Project   Receptors   and  5-HT4   Receptors  and  (D)  the
         identification of new species homologues of Project  Receptors,  all in
         accordance  with  Sections  2.00,  2.01 and 5.00 and to the extent that
         LILLY's  license  shall not have  terminated  pursuant to Section 6.02;
         provided  further,  however,  that from January 1, 1999, until July 31,
         1999, such program shall be limited to the activities  described in the
         foregoing clause (A)."'




                                        2

<PAGE>



         Section 2.  Staffing, Planning and Execution of Project.

         (a) SYNAPTIC Effort on Project.  Section 2.00 of the Current  Agreement
is hereby amended by deleting the second sentence thereof in its entirety and by
inserting in lieu thereof the following new sentences:

                  "During the period from January 1, 1997,  through December 31,
         1998,  SYNAPTIC  shall devote a minimum of  twenty-two  Scientific  Man
         Years per year to the Project, at least four of which shall be provided
         by  scientists  with Ph.D.  degrees.  During the period from January 1,
         1999,  through  July 31,  1999,  SYNAPTIC  shall devote an aggregate of
         14,570  Scientific Man Hours to the Project.  As used herein,  the term
         "Scientific Man Hour" shall mean one man hour of scientific work, on or
         directly related to the Project, carried out by a SYNAPTIC employee. Of
         all the SYNAPTIC  employees  assigned to the Project  during the period
         from  January 1, 1999,  through  July 31,  1999,  at least two shall be
         scientists with Ph.D.  degrees and the balance shall be scientists with
         at least Bachelors  degrees in a science.  SYNAPTIC  desires to provide
         LILLY  with a  reasonable  level of  continuity  in terms of  personnel
         assigned to the Project during the period from January 1, 1999, through
         July 31, 1999. Accordingly,  SYNAPTIC will assign to the Project during
         this period as many of the  scientists who were assigned to the Project
         during the calendar  quarter ended  December 31, 1998, as is reasonably
         practicable."

         Section 3.  Funding of the Project.

         (a)  Duration  and  Amount  of  Funding.  Section  3.00 of the  Current
Agreement is hereby amended to read in its entirety as follows:

                  "Section  3.00.  Duration  and  Amount of  Funding.  LILLY has
         provided  SYNAPTIC with financial  support over the period from January
         1, 1991,  to December  31,  1998.  LILLY shall  provide  SYNAPTIC  with
         further  financial  support for the Project for the period from January
         1, 1999,  through July 31, 1999.  SYNAPTIC shall use the funds supplied
         by LILLY  solely for  purposes of the  Project.  During the period from
         January 1, 1999,  through July 31, 1999, the financial support provided
         to SYNAPTIC by LILLY shall be $115 per  Scientific  Man Hour for 14,570
         Scientific Man Hours,  or $1,675,550 in the  aggregate.  The amount per
         Scientific Man Hour shall be the total amount paid to SYNAPTIC by LILLY
         for SYNAPTIC's  effort on the Project,  with SYNAPTIC being responsible
         for all wages, supplies,  facilities,  utilities and all other expenses
         in  connection  with  the  performance  by it of its  services  for the
         Project."

                                        3

<PAGE>



         (b)  Section  3.01 of the  Current  Agreement  sets forth the manner in
which  funding  payments  are to be made by  LILLY to  SYNAPTIC,  as well as the
required  timing of such  payments,  but provides  that the parties may agree in
writing to other terms.  SYNAPTIC  and LILLY hereby agree that,  notwithstanding
the  provisions  of Section 3.01 of the Current  Agreement,  the  $1,675,550  of
funding  required to be paid by LILLY to SYNAPTIC in respect of research support
during the period from January 1, 1999,  through July 31, 1999, shall be payable
in two  equal  installments,  the  first  of which  shall  be due no later  than
February  15,  1999,  and the second of which  shall be due no later than May 1,
1999. Such payments shall be made in the same manner provided in Section 3.01 of
the Current Agreement.

         Section 4.  Commercial Terms.

         Under Section 6.00 of the Current  Agreement,  Lilly is required to pay
Synaptic a running  royalty of three percent (3%) or six percent (6%) of the Net
Sales of each Product  comprising  any Existing  Lilly Compound or New Compound,
respectively,  and to make certain milestone  payments to Synaptic for each such
Compound,  subject to the other terms and  conditions  contained  in the Current
Agreement.  Under  Section  3 of the  March  1996  Letter  Agreement,  Lilly and
Synaptic agreed to make certain modifications to their economic arrangement with
respect to a limited number of Lilly Compounds that met all of the  requirements
set forth in Section 3(b) of such Letter  Agreement  and that were  submitted by
Lilly to Synaptic for testing after December 31, 1995, and before the expiration
or  termination  of the Project.  The parties  have agreed that  effective as of
January 1, 1999, Lilly may not submit any additional Lilly Compounds to Synaptic
for  testing  pursuant  to  Section  3(b) of the March  1996  Letter  Agreement.
Accordingly, Section 3(a) of the

                                        4

<PAGE>



Letter  Agreement is hereby  amended (a) by deleting  therefrom  "and before the
expiration or  termination  of the Project" and (b) by inserting in lieu thereof
"until December 31, 1998".

         Section  5.  Term and  Termination.  Pursuant  to  Section  9.01 of the
Current  Agreement,  the  parties  hereby  agree to extend  the  Project  for an
additional seven-month period beginning as of January 1, 1999. Accordingly,  the
reference  in Section 9.01 of the Current  Agreement  to "December  31, 1998" is
hereby replaced with a reference to "July 31, 1999."

         Section 6.  Counterparts.  This   Addendum  may  be  executed  in   two
counterparts, each of which shall be an  original  instrument, but both of which
together shall constitute one agreement.

         Section 7. Effect of Addendum.  From and after the  Addendum  Effective
Date, (a) all references in the Current Agreement, as amended or supplemented by
this Addendum No. 3, to "this Agreement,"  "hereunder,"  "hereof,"  "herein," or
words of similar import,  shall be a reference to the Current  Agreement,  as so
amended  or  supplemented  and (b)  all  references  in the  March  1996  Letter
Agreement,  as amended by this  Addendum No. 3, to "this  letter,"  "hereunder,"
"hereof,"  "herein,"  or words of similar  import,  shall be a reference  to the
March 1996 Letter  Agreement,  as so  amended.  Except as  expressly  amended or
supplemented by this Addendum No. 3, each of the Current Agreement and the March
1996 Letter Agreement shall remain in full force and effect and unchanged.



                                        5

<PAGE>


         IN WITNESS  WHEREOF,  the  parties  have  caused  this  Addendum  to be
executed and  delivered as of the Addendum No. 3 Effective  Date by their proper
and duly authorized representatives.




                                    ELI LILLY AND COMPANY

                                    By: /s/August M. Watanabe
                                        -------------------------------
                                    Name:  August M. Watanabe
                                    Title: Executive Vice President,
                                           Science and Technology


                                    SYNAPTIC PHARMACEUTICAL CORPORATION

                                    By: /s/Robert L. Spence
                                        -------------------------------
                                    Name:  Robert L. Spence
                                    Title: Senior Vice President and
                                           Chief Financial Officer













                                        6


                                                            EXHIBIT 23.1
                                                            ------------


                         Consent of Independent Auditors

We consent to the incorporation by reference in the Registration Statement (Form
S-8 No. 333- 05793) pertaining to the 1988 Amended and Restated  Incentive Plan,
1996  Incentive  Plan and the 1996  Nonemployee  Director  Stock  Option Plan of
Synaptic Pharmaceutical Corporation of our report dated January 29, 1999 (except
for Note 11 as to which the date is  February  4,  1999),  with  respect  to the
financial  statements  of Synaptic  Pharmaceutical  Corporation  included in the
Annual Report (Form 10-K) for the year ended December 31, 1998.


                                            /s/ ERNST & YOUNG LLP

Hackensack, NJ
March 23, 1999






                                                                  EXHIBIT 24
                                                                  ----------

                                POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS,  that each person whose  signature  appears
below  constitutes and appoints each of Kathleen P. Mullinix and Lisa L. Reiter,
or either of them, such person's true and lawful attorney-in-fact and agent with
full power of substitution  and re-  substitution  for such person and in his or
her name, place and stead, in any and all capacities, to sign this Annual Report
on Form 10-K and any or all  amendments  thereto and to file the same,  with all
exhibits  thereto,  and  other  documents  in  connection  therewith,  with  the
Securities and Exchange  Commission  and the National  Association of Securities
Dealers, granting unto said attorney-in-fact and agent full power and authority,
to do and perform each and every act and thing requisite or necessary to be done
in and about the premises, to all intents and purposes and as fully as he or she
might or could do in  person,  hereby  ratifying  and  confirming  all that said
attorney-in-fact  and agent or her  substitutes  may  lawfully do or cause to be
done by virtue hereof.



          Signature                       Title                     Date
- ------------------------------     ----------------------      --------------

/s/ Kathleen P. Mullinix           Chairman of the Board,      March 9, 1999
- ------------------------------     President, and Chief
    Kathleen P. Mullinix           Executive Officer


/s/ Robert L. Spence               Senior Vice President,      March 9, 1999
- ------------------------------     Chief Financial Officer,
    Robert L. Spence               and Treasurer


/s/ Jonathan J. Fleming            Director                    March 9, 1999
- ------------------------------
    Jonathan J. Fleming


/s/ Zola P. Horovitz, Ph.D         Director                    March 9, 1999
- ------------------------------
    Zola P. Horovitz, Ph.D


/s/ Eric R. Kandel, M.D            Director                    March 9, 1999
- ------------------------------
    Eric R. Kandel, M.D


/s/ John E. Lyons                  Director                    March 9, 1999
- ------------------------------
    John E. Lyons


/s/ Sandra Panem, Ph.D             Director                    March 9, 1999
- ------------------------------
    Sandra Panem, Ph.D


/s/ Alison Taunton-Rigby, Ph.D     Director                    March 9, 1999
- ------------------------------
    Alison Taunton-Rigby, Ph.D

<TABLE> <S> <C>

<ARTICLE> 5
       
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<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               DEC-31-1998
<CASH>                                      16,590,000
<SECURITIES>                                39,788,000
<RECEIVABLES>                                        0
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<PP&E>                                      10,618,000
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<CURRENT-LIABILITIES>                        2,020,000
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<COMMON>                                       107,000
<OTHER-SE>                                  62,569,000
<TOTAL-LIABILITY-AND-EQUITY>                64,696,000
<SALES>                                              0
<TOTAL-REVENUES>                             9,352,000
<CGS>                                                0
<TOTAL-COSTS>                               19,576,000
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                            (6,493,000)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                        (6,493,000)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                               (6,493,000)
<EPS-PRIMARY>                                   (0.61)
<EPS-DILUTED>                                   (0.61)
        

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