TRIMERIS INC
10-K, 1998-03-31
COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 10-K

[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, 1997

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

                For the transition period from _______ to _______

                         Commission File Number 0-23155

                                 TRIMERIS, INC.
             (Exact name of registrant as specified in its charter)

                Delaware                               56-1808663
     (State or other jurisdiction of                (I.R.S. Employer
     incorporation or organization)                Identification No.)

                        4727 UNIVERSITY DRIVE, SUITE 100
                          DURHAM, NORTH CAROLINA 27707

          (Address of principal executive offices, including Zip Code)

                                 (919) 419-6050
               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, $.001 par value (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
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. [x] Yes [ ] 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  aggregate  market value of the voting stock held by  non-affiliates  of the
registrant,  as of March 27, 1998 was approximately $67,731,000 (based on the
last sale price of such stock as reported by the NASDAQ National Market System):

     The number of shares of the  registrant's  Common Stock  outstanding  as of
March 27, 1998 was 10,551,410.

                       DOCUMENTS INCORPORATED BY REFERENCE

Portions  of the  registrant's  definitive  proxy  statement  to be filed by the
Company with the  Securities and Exchange  Commission  within 120 days after the
end of the fiscal year are  incorporated  by  reference in Part III of this Form
10-K.


<PAGE>



                                 TRIMERIS, INC.

                             FORM 10-K ANNUAL REPORT

                   For the Fiscal Year Ended December 31, 1997

                                Table of Contents

<TABLE>
<CAPTION>
Item Number                                                                     Page
- -----------                                                                     ----
<S>       <C>                                                                    <C>
PART I.

Item 1.   Business                                                                1

Item 2.   Properties                                                             22

Item 3.   Legal Proceedings                                                      23

Item 4.   Submission of  Matters to a Vote of Security Holders                   23

PART II

Item 5.   Market for Registrant's Common Equity and Related Stockholder Matters  23

Item 6.   Selected Financial Data                                                25

Item 7.   Management's Discussion and Analysis of Financial Condition and
          Results of Operations                                                  26

Item 8.   Financial Statements and Supplementary Data                            29

Item 9.   Changes in and Disagreements With Accountants on Accounting
          and Financial Disclosure                                               29

PART III.

Item 10.  Directors and Executive Officers of the Registrant                     30

Item 11.  Executive Compensation                                                 32

Item 12.  Security Ownership of Certain Beneficial Owners and Management         32

Item 13.  Certain Relationships and Related Transactions                         32

PART IV.

Item 14.  Exhibits, Financial Statement Schedules, and Reports on Form 8-K       33

Signature Page                                                                   34

Exhibit Index                                                                    35
</TABLE>



<PAGE>


                                     PART I.


Item 1.  Business

     Statements   in  this  Form  10-K   that  are  not   historical   fact  are
forward-looking statements.  These forward-looking statements include statements
regarding Trimeris,  Inc.'s (the "Company" or "Trimeris")  expectations,  hopes,
beliefs,  intentions  or  strategies  regarding  the future and are subject to a
number of known and unknown  risks and  uncertainties,  many of which are beyond
the Company's control. The results of the Company's previous clinical trials are
not necessarily  indicative of future clinical trials,  and the Company's actual
prospective results could differ materially from those discussed herein. Factors
that could cause or contribute to such differences  include, but are not limited
to,  those  discussed  herein  under  the  heading  "Risk  Factors",  in Item 7,
"Management's  Discussion  and  Analysis of Financial  Condition  and Results of
Operations" and elsewhere in this Form 10-K. Further information regarding these
factors,  as well as other  factors  that could cause  actual  results to differ
materially from those set forth in such forward-looking statements, is discussed
under the heading "Risk  Factors"  included in the  Company's  S-1  Registration
Statement  on Form S-1 as declared  effective  by the  Securities  and  Exchange
Commission  (the  "SEC") on October  6, 1997 and from time to time in  Trimeris'
filings with the SEC, which should be read in  conjunction  with this Form 10-K.
The Company  undertakes  no  obligation  to release  publicly the results of any
revisions  to the  statements  contained  in this  report to  reflect  events or
circumstances arising after the date hereof.

Overview

     Trimeris, Inc. was incorporated under Delaware law as SL-1 Pharmaceuticals,
Inc. on January 7, 1993 and changed its name to  Trimeris,  Inc. on February 11,
1993.  Trimeris is a  biopharmaceutical  company  engaged in the  discovery  and
development of novel therapeutic agents that block viral infection by inhibiting
viral fusion with host cells. Viral fusion is a complex process by which viruses
attach to and penetrate host cells. The Company's lead product candidate,  T-20,
inhibits fusion of Human Immunodeficiency  Virus-1 ("HIV") with host cells. T-20
has been tested in a multidose  Phase I/II clinical  trial as a monotherapy  for
HIV-infected patients in the United States. The results from this clinical trial
indicate that short-term administration of T-20 in an intravenous formulation is
safe and well  tolerated.  Furthermore,  all four patients in the clinical trial
who received the highest dose of T-20  experienced a reduction in HIV viral load
to below  detectable  levels  (less than 500  copies/ml)  during  the  treatment
period.  T-20 and the Company's other product candidates are designed to inhibit
viral fusion,  unlike other currently  approved  therapeutic  agents that target
replicating  viruses inside already  infected cells. The Company has developed a
proprietary  technology  platform  in the field of fusion  inhibition,  which is
being  applied  to the  discovery  and  development  of novel  products  for the
treatment of a variety of viral diseases.

     The Company is a  development  stage  company.  The Company  completed  its
initial public offering in October 1997,  raising  approximately  $34.5 million.
Prior to that time, the Company  financed its operations  primarily  through the
private  placement of equity  securities,  the issuance of notes to stockholders
and  equipment  lease  financing.  Since  inception,  substantially  all  of the
Company's   resources  have  been  dedicated  to  the  development,   patenting,
preclinical  testing and a Phase I/II clinical trial of T-20, the development of
a  manufacturing  process  for T-20,  production  of drug  material  for  future
clinical  trials,  the  development  of  the  Company's  proprietary  technology
platform,  and  research  and  development  and  preclinical  testing  of  other
potential  product  candidates  and  compounds  discovered  by the Company.  The
Company has incurred  losses since its  inception  and, as of December 31, 1997,
had an  accumulated  deficit of  approximately  $29.4  million.  The Company has
received revenue solely from Small Business  Innovation Research ("SBIR") grants
and an  investigative  contract and has yet to generate any revenue from product
sales  or  royalties,  and  there  can be no  assurance  that it will be able to
generate any such revenues or royalties in the future.


<PAGE>


The Company's Technology

     The  Company's  academic  founders,  Dr.  Dani  Bolognesi  and  Dr.  Thomas
Matthews,  both of the Duke  University  Center for AIDS Research,  discovered a
novel method to block HIV infection by inhibiting  viral fusion with host cells.
This discovery was licensed to the Company and led to the Company's  development
of its  proprietary  technology  platform.  The Company is using its proprietary
technology  platform to support its discovery and development  programs.  Unlike
therapeutic agents targeting viral replication  processes inside host cells, the
Company's  product  candidates  prevent one of the first steps in the  infection
process that occurs  outside of the host cell.  The Company's goal is to use its
expertise  in the field of fusion  inhibition  to  discover,  develop and market
novel peptides or small molecules to inhibit viral fusion for the treatment of a
variety of diseases.

     T-20, the Company's lead product candidate, inhibits HIV infection. T-20 is
a proprietary 36 amino acid synthetic peptide that binds to a key peptide domain
of the HIV gp41  protein  and blocks HIV viral  fusion by  interfering  with the
interactions between peptide domains within viral proteins that are required for
HIV entry into a host cell.  In a  multidose  Phase I/II  clinical  trial,  T-20
exhibited  dose-dependent  anti-HIV  activity  while  eliciting no  drug-related
adverse events and no dose-limiting toxicities during the treatment period.

     Through its study of the HIV fusion  process,  the Company has  developed a
proprietary  technology platform aimed at discovering  antiviral compounds.  The
cornerstone of this platform is Computerized  Anti-Fusion  Searching  Technology
("CAST"),  a proprietary  computer  algorithm which identifies  target sequences
within  certain viral  proteins  that have the potential to interact  during the
fusion process.  Once identified by the CAST algorithm,  these target  sequences
form the basis for designing highly  selective and potent peptide  inhibitors of
viral  fusion.  CAST has enabled the Company to design  product  candidates  for
Respiratory  Syncytial  Virus  ("RSV") and Human  Parainfluenza  Virus  ("HPIV")
fusion inhibition. The Company has identified, and has filed patent applications
disclosing,  numerous discrete peptide sequences, which include potential fusion
targets in other viruses such as hepatitis B and C, influenza and herpes.

     In addition to viral targets,  CAST has identified  protein sequences which
may have a role in bacterial  pathogenesis,  thus providing the Company with the
basis for future work aimed at the  potential  discovery of  antibiotic  agents.
Ultimately, the Company plans to explore CAST-identified sequences across a wide
range of  targets,  including  those  associated  with  cancer,  immunology  and
neurology.

Business Strategy

     The Company's goal is to become a leader in anti-fusion  viral therapy.  To
achieve this objective, the principal elements of the Company's strategy are to:

     Validate fusion  inhibition  therapy by obtaining  regulatory  approval for
T-20. T-20 has been shown in preclinical testing to inhibit HIV fusion. T-20 has
been tested in a Phase I/II clinical trial,  and the Company  anticipates that a
Phase II pivotal trial will begin in 1998. The Company  believes that it will be
able to conduct  its  pivotal  T-20  clinical  trials  program  pursuant  to the
accelerated approval procedure authorized by the FDA for drugs intended to treat
serious or  life-threatening  illnesses.  The Company  believes that  regulatory
approval of T-20, if obtained,  will provide  important  evidence to support the
validity of viral fusion inhibition therapy.

     Leverage anti-fusion  expertise to develop other antiviral  therapies.  The
Company believes that its proprietary  technology  platform,  including CAST, is
applicable  to many  other  viral  targets  that may be  susceptible  to  fusion
inhibition. For example, using CAST, the Company designed T-786 for treatment of
RSV  infection.  Upon the  successful  completion of  preclinical  testing,  the
Company  anticipates  that it will file a request for  authorization  to conduct
clinical  trials on an  investigational  drug (an "IND") for T-786 in 1998.  The
Company  also has  research  and  discovery  programs to identify  compounds  to
inhibit fusion of other viruses,  including HPIV, influenza,  hepatitis B and C,
and  Epstein-Barr  Virus  ("EBV").  Additionally,  as the  Company  refines  and
enhances  CAST,  the  Company  believes  that it will  be able to  develop  new,
high-throughput screening assays for multiple targets.



                                       2
<PAGE>


     Tailor  commercialization  capabilities to specific  product  markets.  The
Company intends to evaluate the appropriate  commercialization strategy for each
of its product  candidates,  depending on the size and nature of the market. For
example, the Company believes that it may develop its own capability to sell and
market T-20 in the United States because a relatively small number of physicians
write the majority of prescriptions for HIV drugs in the United States.

Programs and Product Candidates Under Development

     The following  table  describes the various  stages of  development  of the
Company's programs and product candidates:

     INDICATION             PRODUCT CANDIDATE              DEVELOPMENT STATUS(1)
     ----------             -----------------              ---------------------

     HIV                    T-20                           Phase I/II Completed
     RSV                    T-786                          Preclinical
     HIV                    Second generation inhibitors   Preclinical
     RSV                    Small molecules                Preclinical
     HPIV                   T-205                          Research
     HPIV                   Small molecules                Research
     HIV                    Small molecules                Research
     Influenza Virus        Small molecules                Discovery
     Hepatitis B Virus      Small molecules                Discovery
     Hepatitis C Virus      Small molecules                Discovery
     Epstein-Barr Virus     Small molecules                Discovery


(1) "Phase I/II Completed"  indicates that the product candidate has been tested
in a Phase  I/II  clinical  trial for  safety  and  preliminary  indications  of
biological  activity in a limited patient  population.  "Preclinical"  indicates
that the Company is testing a product  candidate  in animal  models.  "Research"
indicates  the Company is pursuing  the  discovery of  prototype  compounds  and
evaluating prototype compounds in in vitro testing.  "Discovery"  indicates that
the Company is developing  assay systems to screen  chemical  libraries of small
molecules.

Clinical Development Program

     T-20

     T-20  is  a  proprietary   compound  which  has  demonstrated   significant
inhibition of HIV in preclinical  testing.  T-20 has been tested in a Phase I/II
clinical trial in which T-20 exhibited  dose-dependent  anti-HIV  activity while
eliciting no drug-related adverse events and no dose-limiting  toxicities during
the  treatment  period.  T-20 inhibits HIV viral fusion with host cells and thus
operates  by  a  completely   different  mechanism  of  action  than  any  other
currently-approved  HIV antiviral.  HIV targets primarily the human immune cells
known as CD4+ T-cells and macrophages.  HIV-infected cells ultimately lose their
immune function,  leading to eventual  degeneration of the immune system,  which
results in opportunistic infections,  neurological  dysfunctions,  neoplasms and
death.

     In August 1997, the Company  concluded a Phase I/II clinical trial in which
an intravenous  formulation of T-20 was  administered to HIV-infected  patients.
The clinical trial  consisted of four groups of four  patients,  with each group
receiving a different dose of T-20.  Patients received doses of T-20 at either 3
mg, 10 mg, 30 mg or 100 mg by bolus  intravenous  infusion every 12 hours for 14
consecutive   days.  No  drug-related   adverse  events  were  recorded  and  no
dose-limiting  toxicities  were  observed for any patient  during the  treatment
period.  Furthermore,  a  dose-dependent  decrease  in  HIV  viral  load  and  a
dose-dependent  increase in CD4+ T-cell count were  observed.  All four patients
who received the 100 mg dose  experienced  a decrease in HIV viral load to below
detectable levels (less than 500 copies/ml)  during the treatment period.  


                                       3

<PAGE>


     There can be no  assurance  that the results  from the Phase I/II  clinical
trial will support future  clinical trials or will be predictive of results that
will be obtained in pivotal clinical trials.

     T-20 Clinical Development

     The Company believes that delivery of a continuous therapeutic dose of T-20
using a subcutaneous  infusion delivery system may suppress HIV more effectively
than other delivery mechanisms. Accordingly, the Company, together with MiniMed,
Inc.  ("MiniMed"),  is developing a continuous,  subcutaneous  infusion delivery
system for  administering  T-20. The Company  believes that the ease of use of a
continuous,   subcutaneous   infusion   delivery  system  may  increase  patient
compliance.  In addition, the Company believes that such a system may reduce the
amount of T-20 necessary to maintain effective HIV suppression.  The Company has
announced a Phase II clinical  trial that will be conducted at the University of
Alabama at Birmingham  under the supervision of Dr. Michael Saag and Dr. Michael
Kirby,  the  University of North  Carolina  under the  supervision of Dr. Joseph
Eron, and at the UCLA Medical Center under the  supervision of Dr. Ron Mitsuyasu
and  Dr.  Margrit  Carlson.   The  Company  is  currently  conducting  non-human
hypersensitivity studies with T-20 administered subcutaneously before initiation
of continuous  subcutaneous dosing in HIV positive subjects, as was requested by
the FDA. The Phase II clinical trial will enroll up to 48 HIV-infected  patients
who have begun to fail their existing triple combination  therapy.  The first 10
days  of this  trial  will  assess  the  safety,  plasma  pharmacokinetics,  and
antiviral  activity of multiple  ascending doses of T-20, along with the optimal
dosing  for  T-20  and the  feasibility  of T-20  administration  via a  MiniMed
continuous  subcutaneous  infusion  pump.  At the  completion  of  that  period,
subjects will be eligible to participate in an extension  period of at least six
months,  during which T-20 will be  administered  in combination  with SustivaTM
(efavirenz),   The  Dupont  Merck  Pharmaceutical   Company's  ("Dupont  Merck")
non-nucleoside reverse transcriptase inhibitor in Phase III development, and two
protease inhibitors. The Company has signed a letter of intent with Dupont Merck
to  conduct  this trial and DuPont  Merck has  agreed to  provide  SustivaTM  to
Trimeris.

     After completion of the continuous,  subcutaneous  infusion Phase II trial,
the Company intends to begin a pivotal Phase II trial in a larger  population of
HIV-infected  patients who are either  resistant to, or intolerant of, currently
approved antiviral therapies (RT and protease inhibitors). Historically, pivotal
Phase  II  trials  of  this  type   involving  HIV   antivirals   have  included
approximately  300-400  patients  and have taken  approximately  18-24 months to
complete. The Company anticipates that this pivotal Phase II trial will begin in
the second half of 1998.  Concurrently  with the start of the  pivotal  Phase II
trial,  the Company intends to begin a study of T-20 in  HIV-infected  pediatric
patients.  Historically,  studies of this type  involving  HIV  antivirals  have
included  approximately  40-60 pediatric  patients and have taken  approximately
18-30 months to complete.

     Throughout  the T-20 clinical trial  process,  the Company  intends to work
with the FDA to design and  implement a clinical  trial  strategy  involving the
administration of T-20 to HIV-infected patients in combination with approved HIV
antiviral agents.  The Company also believes that it will be able to conduct its
T-20 clinical  trial programs  pursuant to the  accelerated  approval  procedure
authorized by the FDA for drugs  intended to treat  serious or  life-threatening
illnesses.  However,  there can be no  assurance  that T-20 will be eligible for
accelerated development and/or approval under these regulations.  Further, there
can be no assurance that T-20 (if eligible for  accelerated  development  and/or
approval under these  regulations)  will be approved by the FDA for marketing on
an accelerated  basis, or at all. The  anticipated  timing of the Company's T-20
clinical  trials may be delayed or cancelled for a number of reasons,  including
the  receipt  of   unanticipated   T-20  clinical  trial   results,   additional
non-clinical studies required by the FDA, changes in the focus of the Company or
its collaborators,  financial requirements and resources,  manufacturing issues,
technological  developments and competitive factors.  Accordingly,  no assurance
can be given that the  Company's  T-20  clinical  trials will  commence on their
target dates,  or at all.  Delays in such clinical  trials could have a material
adverse  effect on the Company's  business,  financial  condition and results of
operations.


                                       4
<PAGE>


     HIV Market And Existing Therapies

     HIV infection causes Acquired  Immunodeficiency Syndrome ("AIDS"), which is
one of the leading causes of death in the United States in men and women between
the ages of 25 and 44. The World Health Organization  estimates that, as of late
1996,  approximately 750,000 people were infected with HIV in the United States,
and approximately 510,000 people were infected in Western Europe.

     T-20 Commercialization Strategy

     The Company has entered into a strategic  alliance with MiniMed under which
the parties will collaborate to deliver T-20 using MiniMed's continuous infusion
pump. MiniMed pumps,  currently used for insulin therapy, are generally attached
to a belt,  strapped to a leg or draped on a cord  around the neck.  These pumps
weigh  approximately  3.5 ounces and are  approximately the size of a pager. The
Company  expects that  MiniMed will play an active role in the  marketing of its
pump for T-20 delivery and will provide  patient support and product service for
the pump and related  disposable  products.  The Company  plans to work directly
with MiniMed to pursue necessary  regulatory  approvals for the delivery of T-20
using the MiniMed pump.

     The manufacture of peptides requires significant expertise,  facilities and
equipment.  Accordingly,  the  Company  has  elected  to work  with  third-party
contract  manufacturers to supply quantities of T-20 to be used in the Company's
currently  planned  clinical  trials.  The  Company  may  continue  to  rely  on
third-party  manufacturers throughout the clinical and initial commercialization
phases of T-20  development.  The Company is currently  attempting  to develop a
novel  manufacturing  process for T-20 which could be more  cost-effective  than
currently available methods of production.  There can be no assurance of success
of this process development. Currently available manufacturing methodologies are
expensive and such costs, as well as the Company's  current  dependence on third
parties  for the  manufacture  of its  products  and product  candidates,  could
adversely  affect the Company's  profit margins and its ability to commercialize
T-20.  There can be no assurance  that the Company  will be able to  manufacture
T-20 on a cost-effective or timely basis.

     The Company  does not  currently  have  sales,  marketing  or  distribution
capabilities  and  is  evaluating   strategies  for  the  sale,   marketing  and
distribution of T-20,  including  developing internal  capabilities and entering
into collaborative arrangements. The Company believes that it may be feasible to
develop internal sales,  marketing and  distribution  capability for T-20, since
the  market  for HIV  therapeutics  is  comprised  of a  concentrated  group  of
physicians  in medical  practices  that treat HIV  patients.  The  Company  will
continue to explore alternative  opportunities to market T-20, either internally
or in conjunction with appropriate marketing partners.

Preclinical Development Programs

     The Company is using its  proprietary  technology  platform to discover and
develop fusion  inhibitors for other viral diseases where there are  substantial
unmet medical needs.

     T-786

     T-786 is the  Company's  lead product  candidate  for the  treatment of RSV
infection,   which  is  a  significant  cause  of  pediatric  bronchiolitis  and
pneumonia.  T-786  shows  potent,  specific  and  selective  inhibition  of  RSV
infection  in vitro.  Each year in the  United  States,  11 out of 100  children
younger than one year of age are infected with RSV, more than 90,000 infants are
hospitalized  with RSV infections,  and over 4,500 deaths are attributed to RSV.
Upon successful completion of preclinical tests, the Company anticipates that it
will file an IND for T-786 in 1998.

     Second-Generation HIV Fusion Inhibitors

     Using CAST, the Company has designed proprietary second-generation, peptide
HIV fusion  inhibitors  which bind to regions of the HIV fusion  protein  target
that are different from the region bound by T-20. In 



                                       5
<PAGE>


preclinical  testing,  these  second-generation  compounds have been shown to be
highly  effective  against a wide range of HIV strains in vitro.  In preclinical
testing,  these  compounds  have  demonstrated  pharmaceutical   characteristics
distinct from T-20. The Company believes that these second-generation  compounds
could  provide a range of future  options for the  continuing  treatment  of HIV
infection.

     Anti-RSV Small Molecules

     The Company has  identified a series of  small-molecule  inhibitors  of RSV
infection using its high-throughput screening assays. These assays were designed
based upon the CAST platform.  Using its  proprietary  knowledge of the chemical
structure  of these  compounds,  the Company  has  developed a number of analogs
which have demonstrated potency against RSV in preclinical  testing.  Several of
these analogs have also demonstrated low toxicity.  The Company is continuing to
synthesize   analogs  of  these  compounds  to  evaluate  their   pharmaceutical
properties and will continue preclinical testing to identify lead compounds.

Research And Discovery Programs

     The Company is leveraging its proprietary technology platform and expertise
in viral fusion to discover and develop lead compounds and product candidates to
treat a variety of diseases caused by other viruses.

     Anti-HPIV Compounds

     Using  CAST,  the Company has  developed a series of  proprietary  peptides
which inhibit HPIV in vitro.  T-205, the Company's lead anti-HPIV  peptide,  was
derived  from a  coiled-coil  domain of the HPIV  fusion  protein.  T-205  shows
specific,  selective and potent inhibition of HPIV infection in vitro. HPIV is a
cause of  respiratory  disease in young  infants.  There are no drugs  currently
approved for the treatment of HPIV. The Company is conducting a research program
to evaluate  T-205 and other  peptide  candidates  for possible  advancement  to
preclinical development.

     Anti-HIV Small Molecules

     The Company  has  identified  a series of  small-molecule  compounds  which
inhibit HIV infection in vitro using the Company's high-throughput HIV screening
assays. These assays were designed based on the CAST platform. The Company plans
to continue  screening its chemical  libraries to discover  additional  anti-HIV
small-molecule compounds.

     Influenza Virus

     The Company has  initiated  an  early-stage  discovery  program to create a
high-throughput   screening   assay   based  on  CAST  to   identify   potential
small-molecule inhibitors of influenza viral fusion. The Company has established
a collaboration with Dr. Judith White at the University of Virginia to assist in
the discovery and development of fusion inhibitors for influenza virus.

     Hepatitis B And C Virus

     The  Company  has  initiated   early-stage  discovery  programs  to  create
high-throughput  screening  assays that can  identify  potential  small-molecule
inhibitors of the hepatitis B and C viruses. Additionally, in collaboration with
Dr. Timothy Block of the Thomas Jefferson  Medical School,  the Company plans to
synthesize  and  test  peptides  derived  from  CAST-identified  regions  of the
hepatitis B virus.  The  Company has been  awarded a Phase I SBIR grant from the
Department of Health and Human Services for this program.


                                        6
<PAGE>


     Epstein-Barr Virus

     The Company has initiated an early-stage discovery program in EBV through a
collaboration  with Dr.  Joseph Pagano of the  University  of North  Carolina at
Chapel  Hill.  EBV  causes  infectious  mononucleosis  and has been  linked to a
variety of cancers.  Dr.  Pagano is working  with the  Company's  scientists  to
develop a strategy for  inhibiting a key protein  required for EBV  replication.
Using CAST, the Company has identified key  interactive  peptide  domains within
this molecular target and has synthesized  peptide  inhibitors for the molecular
target in vitro.

Manufacturing

     The  Company  has  no  experience  in  manufacturing  pharmaceuticals,   no
commercial  manufacturing  capacity  and  limited  experience  in  manufacturing
process  development.  The Company has established  relationships and intends to
establish  additional  relationships  with  third-party  manufacturers  for  the
production of quantities  of its product  candidates or compounds  sufficient to
conduct its planned  preclinical  testing and clinical trials and the commercial
production of any approved products or compounds.

    The Company and its third-party  manufacturers have manufactured  sufficient
quantities of T-20 using  solid-phase  sequential  peptide synthesis to complete
preclinical  testing and the Phase I/II clinical trial.  The Company has entered
into agreements with two contract  manufacturers for the solid-phase  sequential
peptide synthetic manufacture of T-20 for use in clinical trials. The Company is
currently  attempting  to develop a novel  manufacturing  process for T-20 which
could be more  cost-effective  than currently  available  methods of production.
There can be no  assurance  of success of this  process  development.  Currently
available  manufacturing  methodologies are expensive and such costs, as well as
the Company's  current  dependence on third parties for the  manufacture  of its
products,  and product  candidates  could adversely  affect the Company's profit
margins and its ability to  commercialize  T-20.  There can be no assurance that
the  Company  will be able to  manufacture  T-20 on a  cost-effective  or timely
basis.

     Commercial  production  of T-20  will  require  raw  materials  in  amounts
substantially  greater  than  those  being  used  in the  current  manufacturing
campaigns.  There can be no assurance that these  materials will be available in
sufficient  quantities or on a  cost-effective  basis to support the  commercial
manufacture of T-20.

     There  can be no  assurance  that the  Company  will be able to  retain  or
establish relationships with any third-party  manufacturers on acceptable terms,
if at all, or that such  third-party  manufacturers  will be able to manufacture
products in commercial  quantities  under the FDA's  current good  manufacturing
practices   requirements  ("GMP")  on  a  cost-effective  basis.  The  Company's
dependence  upon third  parties for the  manufacture  of its  products,  product
candidates and compounds may adversely  affect the Company's  profit margins and
its  ability to develop  and  commercialize  product  candidates,  products  and
compounds on a timely and competitive basis. Further,  there can be no assurance
that manufacturing or quality control problems will not arise in connection with
the manufacture of the Company's  products,  product  candidates or compounds or
that third-party manufacturers will maintain the necessary governmental licenses
and  approvals  to  continue  manufacturing  the  Company's  products,   product
candidates  or  compounds.  Any failure to maintain  existing or  establish  new
relationships with third parties for the Company's manufacturing requirements on
a timely basis and on acceptable  terms would have a material  adverse effect on
the Company's business, financial condition and results of operations.

Licensing And Collaborative Agreements

     The Company has an ongoing program of business  development  which may lead
to  the   establishment  of  collaborative   and  licensing   arrangements  with
collaborative partners,  licensees and third parties to seek regulatory approval
of and to manufacture  and  commercialize  certain of its existing and potential
product candidates and compounds. These collaborations could provide the Company
with funding, research and development resources, access to libraries of diverse
compounds  and  clinical  development,   manufacturing,   sales,  marketing  and
distribution capabilities.  Accordingly,  the Company's success could depend, in
part,  upon  the  subsequent   success  of  such  third  parties  in  performing
preclinical  testing and clinical  trials,



                                       7
<PAGE>


obtaining  the  requisite  regulatory   approvals,   scaling  up  manufacturing,
successfully  commercializing  the licensed product  candidates or compounds and
otherwise  performing  their  obligations.  There can be no  assurance  that the
Company  will be able to  maintain  its  existing  arrangements  or  enter  into
acceptable  collaborative  and license  arrangements in the future on acceptable
terms, if at all, that such  arrangements  will be successful,  that the parties
with which the Company has or may  establish  arrangements  will  perform  their
obligations under the  arrangements,  or that potential  collaborators  will not
compete with the Company by seeking alternative means of developing therapeutics
for the diseases  targeted by the Company.  There can also be no assurance  that
the Company's  existing or any future  arrangements will lead to the development
of product candidates or compounds with commercial  potential,  that the Company
will be able to obtain  proprietary  rights or licenses for  proprietary  rights
with respect to any technology  developed in connection with these arrangements,
or  that  the  Company  will  be  able  to  ensure  the  confidentiality  of any
proprietary rights and information developed in such arrangements or prevent the
public  disclosure  thereof.  The  Company  currently  has a  license  from Duke
University  (the  "Duke  License"),  and in the future  may  require  additional
licenses from these or other parties,  to effectively  develop potential product
candidates and compounds.

     In April  1997,  the Company and MiniMed  entered  into an  agreement  (the
"Minimed Agreement"), pursuant to which the Company and MiniMed will collaborate
in the  development  and  delivery of  therapies  for the  treatment of targeted
indications  by combining the continuous  infusion  delivery pump of MiniMed and
the antiviral  product  candidates and compounds being developed by the Company.
The first  collaborative  project under the terms of the agreement  will involve
the continuous  delivery of T-20. While MiniMed's  continuous  infusion pump has
been  approved for the  continuous,  subcutaneous  infusion of other  therapies,
there can be no  assurance  that the FDA will approve on a timely  basis,  if at
all, the use of the delivery of T-20 utilizing the MiniMed  continuous  infusion
pump. The parties are also evaluating other product candidates and compounds for
inclusion under the MiniMed Agreement. Under the terms of the MiniMed Agreement,
a joint management committee will determine an implementation  strategy for each
collaborative  project.  The MiniMed Agreement contains certain  exclusivity and
noncompetition  provisions,  subject  to  the  Company's  right,  under  certain
circumstances,  to terminate such  obligations  with respect to T-20 in exchange
for certain royalty payments.  The failure of the Company and MiniMed to achieve
their  collective  objectives  could  have  a  material  adverse  effect  on the
Company's business, financial condition and results of operations.

     Pursuant to the Duke License, the Company has obtained from Duke University
an exclusive, worldwide,  royalty-free license to all discoveries and inventions
in the field of antiviral  therapeutics  emanating from the laboratories of Drs.
Dani Bolognesi,  Thomas J. Matthews,  Michael Greenberg and Kent Weinhold of the
Duke  University  Center for AIDS  Research for the period from February 3, 1993
until February 2, 2000. The Company's  rights to each of these  discoveries  and
inventions  expire upon the  expiration  of the life of the  particular  patent.
Multiple  discoveries  and inventions  have flowed to the Company under the Duke
License and include  those upon which  United  States  patents have been issued.
None of the  technologies  licensed by the Company from Duke  University  is the
subject of a separate license  agreement.  Rather,  the Company's rights to such
technologies are licensed solely pursuant to the Duke License. While the Company
believes it will be able to  successfully  negotiate  an extension or renewal of
the Duke  License,  there can be no  assurance  that the Company will be able to
obtain such an extension or renewal or that such an extension or renewal will be
on acceptable terms. The early termination of the Duke License or the failure of
the Company to renew the Duke License on acceptable terms, if at all, could have
a material  adverse effect on the Company's  business,  financial  condition and
results of operations.

     In  September  1997,  the Company  obtained  from The New York Blood Center
("NYBC") an exclusive,  worldwide,  royalty-bearing license under certain United
States and foreign patents and patent applications relating to HIV peptides.

Sales, Marketing And Distribution

     The  Company has no  experience  in sales,  marketing  or  distribution  of
pharmaceuticals  and currently has no personnel employed in any such capacities.
However,  the Company intends to develop such  capability in certain areas.  For
example,  because a relatively  small number of physicians write the majority of
prescriptions  for HIV  drugs in the  United  States,  the  Company  intends  to
consider developing in-house 


                                       8
<PAGE>


sales,  marketing and distribution  capabilities to address the market. In other
areas, however, the Company may rely on marketing partners or other arrangements
with third parties which have established  distribution systems and direct sales
forces for the sales, marketing and distribution of such products and compounds.
In the event  that the  Company  is unable to reach  agreement  with one or more
marketing  partners to market  these other  products  and  compounds,  it may be
required to develop internal sales, marketing and distribution  capabilities for
such products and compounds.  There can be no assurance that the Company will be
able  to  establish  sales,  marketing  or  distribution  capabilities  or  make
arrangements  with third parties to perform such activities on acceptable terms,
if at all, or that any internal capabilities or third-party arrangements will be
cost-effective. The failure to establish such capabilities would have a material
adverse  effect on the Company's  business,  financial  condition and results of
operations.

     In addition,  any third parties with which the Company  establishes  sales,
marketing  or  distribution  arrangements  may  have  significant  control  over
important  aspects  of the  commercialization  of  the  Company's  products  and
compounds   including  market   identification,   marketing  methods,   pricing,
composition of sales force and promotional activities.  For example, the MiniMed
Agreement contemplates that MiniMed will participate in the sales, marketing and
distribution of any products jointly  developed by the parties.  There can be no
assurance  that the  Company  will be able to  control  the amount and timing of
resources  that  MiniMed or any other  third  party may devote to the  Company's
products  or  compounds  or prevent any third  party from  pursuing  alternative
technologies  or products that could result in the  development of products that
compete with the Company's  products and compounds and the withdrawal of support
for the Company's products and compounds.

Patents, Proprietary Technology And Trade Secrets

     The Company's success will depend, in part, on its ability, and the ability
of its  collaborators  or licensors,  to obtain  protection for its products and
technologies  under United States and foreign patent laws, to preserve its trade
secrets  and to  operate  without  infringing  the  proprietary  rights of third
parties.

     As of December  31,  1997,  the  Company  was the  assignee or owner of one
pending United States patent  application,  one pending patent application under
the Patent  Cooperation  Treaty  designating  the United States,  and 16 pending
United  States patent  applications,  along with certain  corresponding  foreign
patent  applications.  In September 1997, the Company obtained from the New York
Blood Center an  exclusive,  worldwide,  royalty-bearing  license  under certain
United  States and  foreign  patents  and patent  applications  relating  to HIV
peptides.

     The Company also relies on trade  secrets,  know-how and other  proprietary
information,   which  it  seeks  to  protect,   in  part,  through  the  use  of
confidentiality  agreements  with employees,  consultants,  advisors and others.
There can be no assurance that such agreements will provide adequate  protection
for the Company's trade secrets,  know-how, or other proprietary  information in
the  event  of any  unauthorized  disclosure,  that  employees  of the  Company,
consultants,  advisors,  or others,  will maintain the  confidentiality  of such
trade  secrets  or  proprietary  information,  or  that  the  trade  secrets  or
proprietary  know-how of the Company  will not  otherwise  become  known,  or be
independently developed by, competitors.

Competition

     The  Company is  engaged in  segments  of the  biopharmaceutical  industry,
including  the  treatment of HIV,  that are  intensely  competitive  and rapidly
changing.  If successfully  developed and approved,  the product  candidates and
compounds  that the Company is currently  developing  will compete with numerous
existing therapies. For example, at least 11 drugs are currently approved in the
United States for the  treatment of HIV. In addition,  a number of companies are
pursuing the development of novel  pharmaceutical  products that target the same
diseases that the Company is targeting,  and some companies,  including  several
multinational  pharmaceutical  companies,  are simultaneously  marketing several
different drugs and may therefore be able to market their own  combination  drug
therapies. The Company believes that a significant number of drugs are currently
under  development and will become  available in the future for the treatment of
HIV.


                                       9
<PAGE>


     Although the Company believes that there is a significant future market for
therapeutics  that treat HIV and other viral diseases,  the Company  anticipates
that it will  face  intense  and  increasing  competition  in the  future as new
products enter the market and advanced technologies become available.  There can
be no assurance that existing  products or new products for the treatment of HIV
developed by the Company's  competitors,  including  Glaxo Wellcome plc, Merck &
Co., Agouron  Pharmaceuticals,  Inc. and Abbot  Laboratories,  Inc., will not be
more effective,  or more effectively  marketed and sold, than T-20, should it be
successfully developed and receive regulatory approval, or any other therapeutic
for HIV  that may be  developed  by the  Company.  Competitive  products  or the
development  by  others  of a cure  or new  treatment  methods  may  render  the
Company's  technologies and products and compounds  obsolete,  noncompetitive or
uneconomical prior to the Company's recovery of development or commercialization
expenses  incurred  with  respect  to  any  such  technologies  or  products  or
compounds.   Many  of  the  Company's  competitors  have  significantly  greater
financial,  technical  and human  resources  than the  Company and may be better
equipped to develop,  manufacture,  sell,  market and  distribute  products.  In
addition,  many of these  companies  have  extensive  experience in  preclinical
testing and clinical trials,  obtaining FDA and other  regulatory  approvals and
manufacturing and marketing  pharmaceutical products. For use individually or in
combination therapy, many of these competitors also have products that have been
approved  or  are in  late-stage  development  and  operate  large,  well-funded
research  and  development  programs.  Smaller  companies  may also  prove to be
significant  competitors,  particularly through collaborative  arrangements with
large  pharmaceutical  and  biotechnology   companies.   Furthermore,   academic
institutions,  governmental  agencies  and other  public  and  private  research
organizations are becoming  increasingly  aware of the commercial value of their
inventions and are more actively  seeking to  commercialize  the technology they
have developed.

     New  developments  in areas in which the Company is conducting its research
and  development  are expected to continue at a rapid pace in both  industry and
academia.  If the Company's  product  candidates and compounds are  successfully
developed and approved,  the Company will face  competition  based on the safety
and  effectiveness  of its  products  and  compounds,  the  timing  and scope of
regulatory  approvals,  availability  of  manufacturing,  sales,  marketing  and
distribution  capabilities,  reimbursement coverage,  price and patent position.
There can be no assurance that the Company's  competitors  will not develop more
effective or more affordable  technology or products,  or achieve earlier patent
protection,  product development or product  commercialization than the Company.
Accordingly,  the Company's competitors may succeed in commercializing  products
more  rapidly  or  effectively  than the  Company,  which  could have a material
adverse  effect on the Company's  business,  financial  condition and results of
operations.

Government Regulation

     Human   pharmaceutical   products  are  subject  to  lengthy  and  rigorous
preclinical  testing  and  clinical  trials  and  other  extensive,  costly  and
time-consuming   procedures   mandated  by  the  FDA  and   foreign   regulatory
authorities.  The regulatory approval process,  which includes the establishment
of the safety and  effectiveness of each product candidate and compound for each
target indication and confirmation by the FDA that good laboratory, clinical and
manufacturing  practices  were  maintained  during  testing  and  manufacturing,
typically takes a number of years,  varying based upon the type,  complexity and
novelty of the pharmaceutical  product. This process requires the expenditure of
substantial   resources  and  gives  larger  companies  with  greater  financial
resources  a  competitive  advantage  over  the  Company.  To date,  no  product
candidate  or compound  being  evaluated by the Company has been  submitted  for
approval by the FDA or any other regulatory authority for commercialization, and
there can be no assurance that any such product  candidate or compound will ever
be approved for commercialization or that the Company will be able to obtain the
labeling claims desired for its product candidates or compounds.

     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
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 an New Drug  Application  (an "NDA");  and (v) review and approval of the
NDA by the FDA before the drug may be shipped or sold commercially.


                                       10
<PAGE>


     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, unless there is
objection  by the FDA,  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.

     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 a 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
pharmacokinetics.

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

     Phase III  clinical  trials are  initiated to  establish  further  clinical
safety and effectiveness 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  physician  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.

     There  can  be  no  assurance  that,  even  after   substantial   time  and
expenditures,  any  of the  Company's  product  candidates  or  compounds  under
development will receive  commercialization  approval in any country on a timely
basis,  or at all.  If the  Company  is unable to  demonstrate  the  safety  and
effectiveness of its product candidates and compounds to the satisfaction of the
FDA  or  foreign  regulatory   authorities,   the  Company  will  be  unable  to
commercialize its product candidates and compounds;  and the Company's business,
financial  condition and results of operations would be materially and adversely
affected.  Furthermore,  even if regulatory  approval of a product  candidate or
compound is obtained,  the approval may entail limitations on the indicated uses
for which the product candidate or compound may be marketed.

     The Company and its existing and potential  future  collaborative  partners
are also  subject  to  various  federal,  state and local  laws and  regulations
relating to safe working conditions, laboratory and manufacturing practices, the
experimental use of animals and the use and disposal of hazardous or potentially
hazardous  substances,  including  radioactive  compounds and infectious disease
agents,  used in connection  with the Company's  product  development  programs.
Compliance  with such  laws,  regulations  and  requirements  may be costly  and
time-consuming and the failure to maintain such compliance by the Company or its
existing and future collaborative  partners could have a material adverse effect
on the Company's business, financial condition and results of operations.

Third Party Reimbursement And Health Care Reform Measures

     In the United States and elsewhere,  sales of prescription  pharmaceuticals
are dependent,  in part, on the  availability of  reimbursement  to the consumer
from  third-party  payors,  such as  government  agencies and private  insurance
plans.  Third-party  payors are increasingly  challenging the prices charged for
medical products and services in an effort to promote cost containment  measures
and alternative health care delivery systems and they may mandate  predetermined
discounts  from list  prices.  If the Company  succeeds in bringing  one or more
products  or  compounds  to the  market,  there can be no  assurance  that these
products or compounds will be considered cost-effective or that reimbursement to
the consumer  will be available  or will be  sufficient  to allow the Company to
sell its products or compounds on a competitive basis.  Because of the high cost
of  the  treatment  of  AIDS  or  HIV  using  combination  therapy,  many  state
legislatures  are  

                                       11

<PAGE>

reassessing  reimbursement policies for such therapy. In addition, an increasing
emphasis on managed  care in the United  States to reduce the  overall  costs of
health care has and will  continue to increase  the  pressure on  pharmaceutical
pricing.  While the Company  cannot  predict  whether  legislative or regulatory
proposals  will be adopted or the effect such  proposals or managed care efforts
may have on its business,  the announcement and/or adoption of such proposals or
efforts  could  have  a  material  adverse  effect  on the  Company's  business,
financial condition and results of operations.

Human Resources

     As of December 31, 1997, the Company had 38 full-time employees,  including
a technical  scientific staff of 29. None of the Company's employees are covered
by collective bargaining  arrangements,  and management considers relations with
its employees to be good.

Risk Factors

     In  addition  to the other  information  contained  in this Form 10-K,  the
following risk factors should be considered  carefully in evaluating the Company
and its  business.  This Form 10-K  contains  forward-looking  statements  which
involve  risks and  uncertainties.  The  Company's  actual  results could differ
materially  from those  anticipated  in these  forward-looking  statements  as a
result of  certain  factors,  including  those set forth in the  following  risk
factors and elsewhere in this Form 10-K.

     Development Stage Company. The Company commenced operations in January 1993
and is subject to all of the business risks associated with a  biopharmaceutical
company  in  the  early  stage  of  development,  including  constraints  on the
Company's financial,  personnel and other resources, and uncertainties regarding
the Company's novel product discovery and development programs. Since inception,
substantially  all  of  the  Company's  resources  have  been  dedicated  to the
development,  patenting,  preclinical testing and a Phase I/II clinical trial of
T-20, the  development of a manufacturing  process for T-20,  production of drug
material  for  future  clinical   trials,   the  development  of  the  Company's
proprietary  technology  platform,  and research and development and preclinical
testing of other potential  product  candidates and compounds  discovered by the
Company.  The Company has yet to generate  any revenues  from  product  sales or
royalties,  and there can be no  assurance  that it will be able to generate any
such  revenues or  royalties in the future.  Product  candidates  and  compounds
discovered  by  the  Company  and  developed   through  the  Company's   product
development  programs will require  significant  additional,  time-consuming and
costly  research and  development,  preclinical  testing and extensive  clinical
trials prior to submission of any regulatory application for commercial use.

     History Of Operating  Losses;  Accumulated  Deficit;  Uncertainty Of Future
Profitability.  The Company  has  incurred  losses  since its  inception.  As of
December 31, 1997, the Company's  accumulated  deficit was  approximately  $29.4
million.  Such losses have resulted  principally  from expenses  incurred in the
Company's research and development  activities  associated with the development,
patenting,  preclinical  testing and a Phase I/II  clinical  trial of T-20,  the
development  of a  manufacturing  process  for  T-20,  the  development  of  its
proprietary  technology  platform,  research  and  development  and  preclinical
testing of other potential  product  candidates and compounds  discovered by the
Company,  and from general and administrative  expenses.  The Company expects to
incur  substantial  losses  for the  foreseeable  future and  expects  losses to
increase as the  Company's  research and  development,  preclinical  testing and
clinical trial efforts expand. The amount and timing of the Company's  operating
expenses will depend on several  factors,  including the status of the Company's
research and development  activities,  product candidate and compound  discovery
and development efforts,  including preclinical testing and clinical trials, the
timing  of  regulatory  actions,  the  costs  involved  in  preparing,   filing,
prosecuting,  maintaining,  protecting  and  enforcing  patent  claims and other
proprietary  rights,  the ability of the  Company to  establish,  internally  or
through relationships with third parties,  manufacturing,  sales,  marketing and
distribution  capabilities,  technological  and other changes in the competitive
landscape,   changes  in  the  Company's   existing   research  and  development
relationships and strategic alliances, evaluation of the commercial viability of
potential product candidates and other factors, many of which are outside of the
Company's  control.  As a result,  the Company  believes  that  period-to-period
comparisons of financial  results in the future are not  necessarily  meaningful
and  results of  operations  in prior  periods  should not be relied  upon as an
indication of future

                                       12

<PAGE>


performance.  Any  deviations in results of operations  from levels  expected by
securities  analysts and investors  could have a material  adverse effect on the
market price of the Common Stock. The Company's ability to achieve profitability
will  depend,  in  part,  upon its or its  collaborative  partners'  ability  to
successfully  develop and obtain regulatory  approval for T-20 and other product
candidates and compounds discovered by the Company, and to develop the capacity,
either internally or through  relationships with third parties,  to manufacture,
sell, market and distribute approved products, if any. There can be no assurance
that the Company will ever generate  significant  revenues or achieve profitable
operations.

     Dependence  On A  Single  Product  Candidate.  T-20  is  the  only  product
candidate  developed  by the  Company  which  has been  tested  in  humans.  The
Company's  success will depend,  in  significant  part,  upon the ability of the
Company to establish the safety and  effectiveness of T-20 in humans,  to obtain
the  requisite  regulatory  approvals  for the  commercialization  of  T-20,  to
establish   relationships  for  the  commercial-scale   production  of  T-20  at
acceptable cost and with appropriate  quality,  to successfully market T-20, and
to achieve market acceptance of T-20 by the medical community,  including health
care  providers  and  third-party   payors.   Failure  of  the  Company  or  its
collaborative partners to successfully develop and commercialize T-20 would have
a material  adverse effect on the Company's  business,  financial  condition and
results of operations.

     Technological  Uncertainty.  The Company's product development programs are
based upon a novel  technology  designed to facilitate  the discovery of product
candidates and compounds which are designed to treat viral infection through the
inhibition  of viral  fusion.  The  Company  is not aware of any other  approved
antiviral  pharmaceutical  products which target the inhibition of viral fusion.
Accordingly,  product  development  utilizing the Company's  novel  mechanism of
action involves a high degree of risk, is highly uncertain,  and could result in
unanticipated  developments,  clinical or regulatory delays,  unexpected adverse
side effects or inadequate therapeutic effectiveness, any of which could slow or
suspend the Company's  product  development  efforts which could have a material
adverse  effect on the Company's  business,  financial  condition and results of
operations.  There can be no assurance that the Company's technologies will lead
to the discovery and development of any commercially  viable products,  that the
Company's research or product  development  efforts as to any particular product
candidate  or compound  will be  successfully  completed,  that any such product
candidates  or  compounds  will be  proven  to be safe  and  effective,  or that
required  regulatory  approvals  will be  obtained.  The  Company's  development
programs are subject to the risks  inherent in the  development  of new products
using new technologies and approaches. There can be no assurance that unforeseen
problems  will not develop with these  technologies  or  applications,  that the
Company  will  be able  to  address  successfully  technological  challenges  it
encounters  in its  research  and  development  programs  or  that  commercially
feasible  product  candidates or compounds  will  ultimately be developed by the
Company.

     Uncertainties  Related To  Clinical  Trials And  Clinical  Trial  Strategy.
Before obtaining required regulatory approvals for the commercial sale of any of
its product  candidates  or  compounds,  the Company  must  demonstrate  through
preclinical  testing and clinical trials that each product candidate or compound
is safe and effective for use in humans for each target indication. To date, the
Company  has  conducted  initial  preclinical  testing of certain of its product
candidates  and has conducted a Phase I/II clinical  trial of T-20.  The Company
intends to conduct a Phase II  clinical  trial and a pivotal  clinical  trial of
T-20. These clinical trials will involve a relatively small patient  population.
No assurance can be given that the results of early clinical trials will support
the  commencement  of further  clinical  trials of T-20, that the results of the
clinical trials will support the Company's applications for regulatory approval,
or  that  regulatory  authorities  will  not  require  the  Company  to  conduct
additional  clinical  trials either prior to, or after,  regulatory  approval is
obtained.  The  Company may find,  at any stage of this  complex  process,  that
potential product candidates or compounds that appeared promising in preclinical
testing and early clinical trials do not demonstrate  safety or effectiveness on
a larger  scale in advanced  clinical  trials or do not  receive  the  requisite
regulatory approvals. Accordingly, any product development program undertaken by
the Company may be curtailed,  redirected or eliminated at any time, which could
result in delays in conducting further  preclinical testing and clinical trials,
in unexpected adverse events in further preclinical testing and clinical trials,
and in  additional  development  expenses.  Furthermore,  administration  of the
Company's   potential  product   candidates  or  compounds  may  prove  to  have
undesirable or unintended side effects in humans. The occurrence of side effects
could interrupt, delay or halt clinical trials of each such product candidate or


                                       13
<PAGE>


compound  and  could  delay  or  prevent  its  approval  by the  FDA or  foreign
regulatory authorities for any and all targeted indications.  The Company or the
FDA may suspend or terminate  clinical trials at any time if it is believed that
the trial  participants  are being  exposed to  unacceptable  health  risks.  In
addition,  this Form 10-K reflects the Company's  estimates regarding the timing
of future preclinical  testing and clinical trials. Such preclinical testing and
clinical  trials may be delayed or cancelled for a number of reasons,  including
the receipt of  unanticipated,  adverse or ambiguous  results  from  preclinical
testing or clinical trials,  the demonstration of undesirable or unintended side
effects,  the  inability to locate,  recruit and qualify  sufficient  numbers of
patients,  lack of funding,  the  inability to locate or recruit  scientists  to
undertake  or  complete  planned  preclinical  testing or clinical  trials,  the
redesign of the Company's  preclinical  testing or clinical trial programs,  the
inability to  manufacture  or acquire  sufficient  quantities of the  particular
product  candidate or any other components  required for preclinical  testing or
clinical trials, regulatory delays or other regulatory actions, changes in focus
of the Company's or its collaborators'  development  efforts, and the disclosure
of clinical trial results by competitors. Accordingly, no assurance can be given
that the Company's preclinical testing or clinical trials will commence on their
target  dates,  or at all.  Delays  in  such  testing  and  trials  could  delay
regulatory    approval   for   the   Company's   product    candidates,    delay
commercialization  of  the  Company's  product  candidates,  increase  operating
expenses,  result in the expenditure of additional capital,  cause the diversion
of management time and attention,  or create adverse market perception about the
Company and its product  candidates,  any of which could have a material adverse
effect on the Company's business, financial condition and results of operations.

     The rate of completion of the Company's  clinical  trials will depend upon,
among  other  factors,  obtaining  or  manufacturing  adequate  amounts  of  the
Company's  product  candidates  from  third-party  manufacturers  and sufficient
patient enrollment.  See "Business - Manufacturing" for a description of certain
risks associated with the manufacturing of the Company's product  candidates and
compounds.  Patient enrollment is a function of many factors, including the size
of the patient population, the nature of the protocol, the proximity of patients
to clinical sites and the eligibility criteria for the clinical trial. Delays in
planned  patient  enrollment  may result in  increased  costs or delays or both,
which could have a material adverse effect on the Company's business,  financial
condition and results of operations.

     Dependence On Collaborations  And Licenses With Others. The Company intends
to  consider  entering  into   collaborative   and  license   arrangements  with
collaborative partners,  licensees and third parties to seek regulatory approval
of and to manufacture  and  commercialize  certain of its existing and potential
product  candidates  and  compounds.  Accordingly,  the  Company's  success will
depend, in part, upon the subsequent success of such third parties in performing
preclinical  testing and clinical  trials,  obtaining the  requisite  regulatory
approvals,  scaling up manufacturing,  successfully commercializing the licensed
product  candidates  or compounds and otherwise  performing  their  obligations.
There can be no assurance that the Company will be able to maintain its existing
arrangements or enter into acceptable  collaborative and license arrangements in
the  future on  acceptable  terms,  if at all,  that such  arrangements  will be
successful,  that the  parties  with  which  the  Company  has or may  establish
arrangements  will perform their obligations  under such  arrangements,  or that
potential collaborators will not compete with the Company by seeking alternative
means of developing therapeutics for the diseases targeted by the Company. There
can also be no assurance that the Company's existing or any future  arrangements
will lead to the development of product  candidates or compounds with commercial
potential,  that  the  Company  will be able to  obtain  proprietary  rights  or
licenses for the  proprietary  rights with respect to any  technology or product
candidates or compounds developed in connection with these arrangements, or that
the Company will be able to ensure the confidentiality of any proprietary rights
and information  developed in such arrangements or prevent the public disclosure
thereof.  The Company  currently has a license from Duke University,  and in the
future  may  require  additional  licenses  from  these  or  other  parties,  to
effectively develop potential product candidates and compounds.  Pursuant to the
Duke  License,  the Company  has  obtained an  exclusive,  worldwide  license to
existing and certain future technologies in the field of antiviral  therapeutics
developed  by  several  researchers  at Duke  University  for  the  life of each
particular  patent filed in connection with such  technologies.  Unless the Duke
License  is  renewed,  the  Company  will  not be  entitled  to  any  additional
technologies  developed after 2000 or after any earlier  termination.  The early
termination  of the Duke  License  due to the  Company's  failure to develop the
licensed technologies or the failure of the Company to renew the Duke License on
acceptable  terms,  or at all,  could  have a  material  adverse  effect  on the
Company's business,  financial condition and results of operations.  Pursuant to
the MiniMed  Agreement,  the



                                       14
<PAGE>


Company  and  MiniMed  have agreed to jointly  design,  develop and  implement a
system for the  continual  delivery of T-20  utilizing  the  MiniMed  continuous
infusion  pump.  The  failure  of the  Company  and  MiniMed  to  achieve  their
collective  objectives  could have a material  adverse  effect on the  Company's
business,  financial  condition  and  results  of  operations.  There  can be no
assurance that such license or agreements  can be maintained or that  additional
licenses can be obtained on acceptable terms, if at all, or will be renewable if
obtained,  or that the patents  underlying such licenses,  if any, will be valid
and  enforceable,  or that the  proprietary  nature of the  patented  technology
underlying such licenses will remain proprietary.

     Future Capital Needs;  Uncertainty Of Additional  Funding.  The Company has
experienced negative cash flows from operations since its inception and does not
anticipate  generating  sufficient positive cash flows to fund its operations in
the  foreseeable  future.  The Company has expended,  and expects to continue to
expend in the  future,  substantial  funds to pursue its product  candidate  and
compound discovery and development efforts, including expenditures for continued
clinical trials of T-20, the  development of a  manufacturing  process for T-20,
research and  development and  preclinical  testing of other  potential  product
candidates  and compounds  discovered by the Company and the  development of its
proprietary  technology platform.  The Company expects that its existing capital
resources,  together with the interest earned thereon,  will be adequate to fund
its capital  requirements  through 1998.  However,  the Company's future capital
requirements  and the adequacy of available  funds will depend on many  factors,
including the results of the clinical  trials relating to T-20, the progress and
scope of the  Company's  product  development  programs,  the magnitude of these
programs,  the results of preclinical  testing and clinical trials, the need for
additional  facilities  based on the results of these clinical  trials and other
product  development  programs,  changes  in  the  focus  and  direction  of the
Company's product development programs, the costs involved in preparing, filing,
prosecuting,  maintaining,  protecting  and  enforcing  patent  claims and other
intellectual  property rights,  competitive factors and technological  advances,
the cost, timing and outcome of regulatory reviews,  changes in the requirements
of the FDA,  administrative  and legal  expenses,  evaluation of the  commercial
viability of potential  product  candidates and compounds,  the establishment of
capacity,  either internally or through the establishment of relationships  with
third parties, for manufacturing,  sales,  marketing and distribution  functions
and other  factors,  many of which are outside of the Company's  control.  Thus,
there can be no assurance that the current capital resources,  together with the
interest  earned  thereon,  will be  sufficient  to fund the  Company's  capital
requirements  during the period  discussed  above.  The  Company  believes  that
substantial additional funds will be required to continue to fund its operations
and that the Company will be required to obtain  additional funds through equity
or debt financings or licenses,  agreements or other  arrangements with partners
and others,  or from other sources.  The terms of any such equity financings may
be dilutive to  stockholders,  and the terms of any debt  financings may contain
restrictive  covenants  which  limit the  Company's  ability  to pursue  certain
courses of action.  There can be no assurance  that such funds will be available
to the Company on acceptable  terms, if at all, or that any such financings will
be adequate to meet the Company's future capital requirements. If adequate funds
are not available, the Company may be required to delay, scale-back or eliminate
certain  aspects of its  preclinical  testing,  clinical trials and research and
development  programs  or  attempt to obtain  funds  through  arrangements  with
collaborative  partners or others  that may  require  the Company to  relinquish
rights to certain of its technologies or product candidates or compounds,  which
could  have a  material  adverse  effect on the  Company's  business,  financial
condition and results of operations.

     Uncertainty Regarding Patents And Proprietary Rights. The Company's success
will depend,  in part, on its ability,  and the ability of its  collaborators or
licensors,  to obtain protection for its products and technologies  under United
States and foreign  patent laws, to preserve its trade  secrets,  and to operate
without  infringing  the  proprietary  rights of third  parties.  Because of the
substantial  length of time and expense  associated  with  bringing new products
through  development to the marketplace,  the  pharmaceutical  and biotechnology
industries place considerable importance on obtaining,  and maintaining,  patent
and trade secret protection for new technologies, products and processes.

     The Company has obtained rights to certain patents and patent  applications
and may, in the future, seek rights from third parties to additional patents and
patent  applications.  Legal  standards  relating to the scope of claims and the
validity of patents in the  biopharmaceutical  industry are  uncertain and still
evolving, and no assurance can be given as to the degree of protection that will
be afforded any patents issued to, or



                                       15
<PAGE>


licensed  by, the Company.  There can be no assurance  that,  if  challenged  by
others in litigation,  any patents assigned to or licensed by the Company,  will
not be found invalid. Furthermore,  there can be no assurance that the Company's
activities would not infringe  patents owned by others.  Defense and prosecution
of patent matters can be expensive and time-consuming and, regardless of whether
the  outcome  is  favorable  to the  Company,  can  result in the  diversion  of
substantial financial,  management and other resources. An adverse outcome could
subject the  Company to  significant  liability  to third  parties,  require the
Company to obtain  licenses from third parties,  or require the Company to cease
any related research and development  activities and product sales. No assurance
can be given that any licenses  required  under any such patents or  proprietary
rights would be made  available on terms  acceptable to the Company,  if at all.
Moreover,   the  laws  of  certain  countries  may  not  protect  the  Company's
proprietary rights to the same extent as U.S. law.

     The Company also relies on trade  secrets,  know-how and other  proprietary
information,   which  it  seeks  to  protect,   in  part,  through  the  use  of
confidentiality  agreements with employees,  consultants,  advisors, and others.
There can be no assurance that such agreements will provide adequate  protection
for the Company's trade secrets,  know-how, or other proprietary  information in
the event of any unauthorized use or disclosure,  that employees of the Company,
consultants,  advisors or others will maintain the confidentiality of such trade
secrets or  proprietary  information,  or that the trade secrets or  proprietary
know-how of the Company will not  otherwise  become known,  or be  independently
developed, by competitors.

     In  January  1997,  the United  States  Patent and  Trademark  Office  (the
"USPTO") instituted an interference proceeding between an issued patent licensed
by the Company from Duke University and a pending patent  application owned by a
third party. An interference proceeding is an action, in the USPTO, to determine
which, of several parties, is entitled to a patent. The Company believes that no
interference-in-fact  exists, i.e., that the parties to the interference are not
claiming the same patentable invention,  and, through its licensor,  the Company
is taking all reasonable action to have the interference  proceeding  dismissed.
However,  no assurance  can be given that the  interference  proceeding  will be
dismissed.  Failure of the  Company's  licensor  to prevail in the  interference
proceeding  and any loss of the  involved  patent  rights  could have a material
adverse  effect on the Company's  business,  financial  condition and results of
operations.

     Extensive Government Regulation; No Assurance Of Regulatory Approval. Human
pharmaceutical  products are subject to lengthy and rigorous preclinical testing
and clinical trials and other extensive,  costly and  time-consuming  procedures
mandated by the FDA and foreign regulatory authorities.  The regulatory approval
process,  which includes the  establishment  of the safety and  effectiveness of
each product  candidate and compound for each target indication and confirmation
by the FDA that good  laboratory,  clinical  and  manufacturing  practices  were
maintained during testing and manufacturing,  typically takes a number of years,
varying  based  upon the type,  complexity  and  novelty  of the  pharmaceutical
product.  This process  requires the  expenditure of  substantial  resources and
gives larger companies with greater financial resources a competitive  advantage
over the Company.  To date, no product  candidate or compound being evaluated by
the Company has been  submitted for approval by the FDA or any other  regulatory
authority  for  commercialization,  and there can be no assurance  that any such
product  candidate or compound  will ever be approved for  commercialization  or
that the  Company  will be able to obtain the  labeling  claims  desired for its
product  candidates or compounds.  There can be no assurance that  submission to
the  FDA of a  request  for  authorization  to  conduct  clinical  trials  on an
investigational  drug will be approved on a trial basis, if at all. There can be
no assurance that if clinical  trials are  successfully  completed,  the Company
will be able to  submit  an NDA in a timely  manner or that any such NDA will be
approved by the FDA.  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 the clinical
trials. Any failure of the Company to successfully  complete its clinical trials
and obtain approvals of corresponding  NDAs would have a material adverse effect
on the Company's business,  financial  condition and results of operations.  The
Company is and will continue to be dependent  upon the  laboratories  conducting
its preclinical testing and clinical trials to maintain both good laboratory and
good  clinical  practices,  and, if any of the Company's  product  candidates or
compounds  obtain  the  requisite  regulatory  approvals,  the  Company  will be
dependent  upon  any  third-party  manufacturers  of its  products  to  maintain
compliance with the FDA's GMP requirements. Various federal and foreign statutes
and regulations also govern or influence the  manufacturing,  safety,  labeling,
storage, record-keeping and marketing of pharmaceutical products.


                                       16
<PAGE>


     The process of obtaining these approvals and the subsequent compliance with
appropriate   United   States  and  foreign   statutes   and   regulations   are
time-consuming and will require the expenditure of substantial  resources by the
Company. In addition,  these requirements and processes vary widely from country
to country.  The time required for completing  preclinical  testing and clinical
trials  is  uncertain,  and  the  FDA  approval  process  is  unpredictable  and
uncertain,  and no  assurance  can be given  that  necessary  approvals  will be
granted  on a timely  basis,  or at all.  The  Company  may  decide to replace a
product candidate or compound in preclinical testing and/or clinical trials with
a modified product candidate or compound, thus extending the development period.
In  addition,  the FDA or similar  foreign  regulatory  authorities  may require
additional   clinical  trials,   which  could  result  in  increased  costs  and
significant  development  delays.  Delays or rejections  may also be encountered
based upon changes in  legislation,  administrative  action or FDA policy during
the period of  product  development  and FDA  review,  including  changes in FDA
policy  relating to clinical  testing  guidelines  for the use of the  Company's
product candidates or compounds in children. Similar delays or rejections may be
encountered in other countries.

     While certain of the Company's product candidates and compounds,  including
T-20,  have  been  and  will  continue  to  be  designed  to  treat  serious  or
life-threatening  illnesses,  such  product  candidates  and  compounds  may not
qualify for accelerated  development  and/or approval under FDA regulations and,
even if some of the  Company's  product  candidates  or  compounds  qualify  for
accelerated  development and/or approval, they may not be approved for marketing
on an accelerated  basis,  or at all. There can be no assurance that, even after
substantial time and expenditures,  any of the Company's  product  candidates or
compounds  under  development  will  receive  commercialization  approval in any
country on a timely  basis,  or at all. If the Company is unable to  demonstrate
the safety and  effectiveness  of its product  candidates  and  compounds to the
satisfaction of the FDA or foreign regulatory  authorities,  the Company will be
unable to commercialize  its product  candidates and compounds and the Company's
business,  financial condition and results of operations would be materially and
adversely affected.

     The effect of governmental  regulation may be to delay the marketing of new
products  or  compounds  for a  considerable  period of time,  to impose  costly
requirements on the Company's  activities or to provide a competitive  advantage
to other companies that compete with the Company.  Adverse  clinical  results by
others could have a negative  impact on the  regulatory  process and timing with
respect to the development and approval of the Company's  product  candidates or
compounds.  A delay in obtaining or failure to obtain regulatory approvals could
have a material adverse effect on the Company's  business,  financial  condition
and results of  operations.  The extent and  character  of  potentially  adverse
governmental regulation that may arise from future legislation or administrative
action cannot be predicted.

     In April 1997, the Company and MiniMed  entered into the MiniMed  Agreement
pursuant  to which the  parties  have  agreed to  jointly  design,  develop  and
implement a system for the  delivery of T-20  utilizing  the MiniMed  continuous
infusion pump. There can be no assurance that the FDA will approve,  on a timely
basis, if at all, the delivery of T-20 utilizing the MiniMed continuous infusion
pump. The failure of the Company and MiniMed to collectively develop a continual
T-20 delivery  system which receives FDA approval on a timely basis could have a
material  adverse  effect on the  Company's  business,  financial  condition and
results of operations.

     The Company and its existing and potential  future  collaborative  partners
are also  subject  to  various  federal,  state and local  laws and  regulations
relating to safe working conditions, laboratory and manufacturing practices, the
experimental use of animals and the use and disposal of hazardous or potentially
hazardous  substances,  including  radioactive  compounds and infectious disease
agents,  used in connection  with the Company's  product  development  programs.
Compliance  with such  laws,  regulations  and  requirements  may be costly  and
time-consuming and the failure to maintain such compliance by the Company or its
existing and future collaborative  partners could have a material adverse effect
on the Company's business, financial condition and results of operations.

     In addition,  this Form 10-K  reflects the  Company's  estimates  regarding
future regulatory  submission dates.  Regulatory  submissions can be delayed, or
plans to submit  proposed  products can be  cancelled,  for a number of reasons,
including the receipt of  unanticipated  preclinical  testing or clinical  trial
reports, changes



                                       17
<PAGE>


in  regulations,  adoption of new, or  unanticipated  enforcement  of  existing,
regulations,    technological   developments   and   competitive   developments.
Accordingly,   no  assurance  can  be  given  that  the  Company's   anticipated
submissions  will be made on  their  target  dates,  or at all.  Delays  in such
submissions  could have a material  adverse  effect on the  Company's  business,
financial condition and results of operations.

     Intense   Competition.   The   Company  is  engaged  in   segments  of  the
biopharmaceutical  industry,  including the treatment of HIV, that are intensely
competitive and rapidly changing.  If successfully  developed and approved,  the
product  candidates and compounds that the Company is currently  developing will
compete with numerous  existing  therapies.  For example,  at least 11 drugs are
currently approved for the treatment of HIV. In addition,  a number of companies
are pursuing the  development of novel  pharmaceutical  products that target the
same  diseases  that the Company is  targeting,  and some  companies,  including
several multinational  pharmaceutical  companies,  are simultaneously  marketing
several  different  drugs  and  may  therefore  be  able  to  market  their  own
combination drug therapies.  The Company  believes that a significant  number of
drugs are currently under  development  and will become  available in the future
for the treatment of HIV. The Company  anticipates that it will face intense and
increasing  competition  in the  future as new  products  enter the  market  and
advanced technologies become available.  There can be no assurance that existing
products or new products for the  treatment  of HIV  developed by the  Company's
competitors,   including  Glaxo  Wellcome  plc,  Merck  &  Co.,  Inc.,   Agouron
Pharmaceuticals Inc. and Abbott Laboratories,  Inc., will not be more effective,
or more  effectively  marketed and sold,  than T-20,  should it be  successfully
developed and receive regulatory approval, or any other therapeutic for HIV that
may be developed  by the Company.  Competitive  products or the  development  by
others of a cure or new treatment methods may render the Company's  technologies
and products and compounds obsolete, noncompetitive or uneconomical prior to the
Company's  recovery of development or  commercialization  expenses incurred with
respect to any such technologies or products or compounds. Many of the Company's
competitors have significantly greater financial,  technical and human resources
than the Company  and may be better  equipped  to  develop,  manufacture,  sell,
market and  distribute  products.  In  addition,  many of these  companies  have
extensive  experience in preclinical testing and clinical trials,  obtaining FDA
and other regulatory  approvals and manufacturing  and marketing  pharmaceutical
products.  Many of these  competitors also have products that have been approved
or are in late-stage  development  and operate large,  well-funded  research and
development  programs.  Smaller  companies  may  also  prove  to be  significant
competitors,   particularly  through   collaborative   arrangements  with  large
pharmaceutical and biotechnology companies.  Furthermore, academic institutions,
governmental  agencies and other public and private research  organizations  are
becoming  increasingly aware of the commercial value of their inventions and are
more actively seeking to commercialize the technology they have developed.

     New  developments  in areas in which the Company is conducting its research
and  development  are expected to continue at a rapid pace in both  industry and
academia.  If the Company's  product  candidates and compounds are  successfully
developed and approved,  the Company will face  competition  based on the safety
and  effectiveness  of its  products  and  compounds,  the  timing  and scope of
regulatory  approvals,  availability  of  manufacturing,  sales,  marketing  and
distribution  capabilities,  reimbursement coverage,  price and patent position.
There can be no assurance that the Company's  competitors  will not develop more
effective or more affordable technologies or products, or achieve earlier patent
protection,  product development or product  commercialization than the Company.
Accordingly,  the Company's competitors may succeed in commercializing  products
more  rapidly  or  effectively  than the  Company,  which  could have a material
adverse  effect on the Company's  business,  financial  condition and results of
operations.

     Lack Of  Manufacturing  Capabilities.  The  Company  has no  experience  in
manufacturing pharmaceuticals,  no commercial manufacturing capacity and limited
experience in  manufacturing  process  development.  The Company has established
relationships and intends to establish additional relationships with third-party
manufacturers  for the  production of  quantities  of its product  candidates or
compounds  sufficient  to conduct its planned  preclinical  testing and clinical
trials and the  commercial  production  of any approved  products or  compounds.
There can be no  assurance  that the Company will be able to retain or establish
relationships with third-party  manufacturers on acceptable terms, if at all, or
that such  third-party  manufacturers  will be able to  manufacture  products in
commercial  quantities under current GMP requirements on a cost-effective basis.
The Company's anticipated peptide-based therapeutics are difficult and expensive
to manufacture  using existing  technologies.  The Company,  and its third-party
manufacturers,




                                       18
<PAGE>


are currently  using  solid-phase  sequential  peptide  synthesis to manufacture
T-20.  This chemical  methodology  is inherently  inefficient  and complex.  The
Company is currently  attempting  to develop a novel  manufacturing  process for
T-20 which could be more  cost-effective  than  currently  available  methods of
production.  There can be no assurance  of success of this process  development.
Currently available manufacturing methodologies are expensive and such costs, as
well as the Company's current dependence on third parties for the manufacture of
its  products,  and product  candidates,  could  adversely  affect the Company's
profit margins and its ability to commercialize  T-20. There can be no assurance
that the Company will be able to manufacture T-20 on a cost-effective  or timely
basis.  The Company's  dependence  upon third parties for the manufacture of its
products,  product  candidates and compounds may materially and adversely affect
the  Company's  profit  margins  and its  ability to develop  and  commercialize
product  candidates,  products and compounds on a timely and competitive  basis.
Further,  there  can be no  assurance  that  manufacturing  or  quality  control
problems  will not arise in  connection  with the  manufacture  of the Company's
products, product candidates or compounds or that third-party manufacturers will
maintain  the  necessary   governmental   licenses  and  approvals  to  continue
manufacturing  the Company's  products,  product  candidates  or compounds.  Any
failure to maintain existing or establish new  relationships  with third parties
for the Company's manufacturing requirements on a timely basis and on acceptable
terms would have a material adverse effect on the Company's business,  financial
condition and results of operations.

     Lack Of Sales, Marketing And Distribution Capabilities.  The Company has no
experience in sales,  marketing or distribution of pharmaceuticals and currently
has no personnel employed in any such capacities.  Some therapeutics for HIV can
be  marketed  to a  concentrated  group of  physicians  in a  relatively  narrow
geographic scope. The Company may consider developing internal sales,  marketing
and distribution  capabilities for T-20, should it be successfully developed and
receive  regulatory  approval.  For  the  remainder  of  the  Company's  product
candidates  and  compounds,  should they be  successfully  developed and receive
regulatory  approval,  the  Company  may  rely on  marketing  partners  or other
arrangements with third parties which have established  distribution systems and
direct sales forces for the sales, marketing,  and distribution of such products
and compounds.  In the event that the Company is unable to reach  agreement with
one or more marketing partners to market these other products and compounds, the
Company would be required to develop internal sales,  marketing and distribution
capabilities for such products and compounds. There can be no assurance that the
Company will be able to establish sales, marketing or distribution  capabilities
or make arrangements with third parties to perform such activities on acceptable
terms, if at all, or that any internal capabilities or third-party  arrangements
will be cost-effective.  The failure to establish such capabilities would have a
material  adverse  effect on the  Company's  business,  financial  condition and
results of operations.

     In addition,  any third parties with which the Company  establishes  sales,
marketing  or  distribution  arrangements  may  have  significant  control  over
important  aspects  of the  commercialization  of  the  Company's  products  and
compounds,   including  market  identification,   marketing  methods,   pricing,
composition of sales force and promotional activities.  For example, the MiniMed
Agreement contemplates that MiniMed will participate in the sales, marketing and
distribution of any products jointly  developed by the parties.  There can be no
assurance  that the  Company  will be able to  control  the amount and timing of
resources  that  MiniMed or any other  third  party may devote to the  Company's
products  or  compounds  or prevent any third  party from  pursuing  alternative
technologies  or products that could result in the  development of products that
compete  with the  Company's  products  and the  withdrawal  of support  for the
Company's products.

     Uncertainty Of Market  Acceptance.  The Company's  success will depend upon
the  acceptance by the medical  community,  including  health care providers and
third-party  payors,  of the  Company's  antifusion  technology  as a  safe  and
effective  means  of  treating  viral  infection.  The  Company's  success  will
additionally  be  dependent  upon  the  acceptance  by  the  medical  community,
including  health care  providers  and  third-party  payors,  of any products or
compounds developed by the Company.  The degree of market acceptance will depend
upon a number of factors,  including  the  establishment  and  demonstration  in
clinical trials of the safety and  effectiveness  of the Company's  products and
compounds,  the receipt and scope of regulatory approvals,  the demonstration of
the potential  advantages of the Company's  products and compounds over existing
treatment methods, and the reimbursement  policies of government and third-party
payors with respect to antiviral  therapeutics based upon blocking viral fusion.
Moreover,  companies that market and sell 



                                       19
<PAGE>


HIV antivirals and other  HIV-related  therapeutics  have from time to time been
subject to protests and boycotts by patient advocacy and activist groups.  These
protests and boycotts have focused on, among other things,  availability of such
therapeutics  and pricing  concerns.  Market  acceptance  of such  therapeutics,
including  any  products or  compounds  that the Company  may  develop,  will be
dependent,  in part,  on the continued  support by such groups.  There can be no
assurance  that the  Company's  products or compounds  will achieve  significant
market  acceptance on a timely basis,  or at all.  Failure of some or all of the
Company's  products,  if successfully  developed,  to achieve significant market
acceptance  would  have a material  adverse  effect on the  Company's  business,
financial condition and results of operations.

     Dependence On Third Parties For Clinical  Trials.  The Company has engaged,
and intends to continue to engage,  third-party contract research  organizations
("CROs") to perform certain  functions in connection with the development of the
Company's  product  candidates  and  compounds.  The  Company  intends to design
clinical trials, but have CROs conduct the clinical trials, and the Company will
rely on the CROs to perform many important  aspects of the clinical trials. As a
result,  these aspects of the  Company's  product  development  programs will be
outside the direct  control of the Company.  There can be no assurance  that the
CROs or other third  parties will perform all of their  obligations  under their
arrangements with the Company.  In addition,  there can be no assurance that any
such  arrangements  will be renewed or any new arrangements will be available on
acceptable  terms,  if at all, or that any such  arrangements,  if entered into,
will be successful. In the event that the CROs do not perform clinical trials in
a  satisfactory  manner  or  breach  their  obligations  to  the  Company,   the
commercialization  of any  product  candidate  or  compound  may be  delayed  or
precluded, which could have a material adverse effect on the Company's business,
financial condition and results of operations.

     Uncertainty Of Third-Party  Reimbursement  And Health Care Reform Measures.
In the United States and elsewhere,  sales of prescription  pharmaceuticals  are
dependent,  in part, on the  availability of  reimbursement to the consumer from
third-party  payors,  such as government  agencies and private  insurance plans.
Third-party  payors are increasingly  challenging the prices charged for medical
products  and  services in an effort to promote  cost  containment  measures and
alternative  health care  delivery  systems  and they may mandate  predetermined
discounts  from list  prices.  If the Company  succeeds in bringing  one or more
products  or  compounds  to the  market,  there can be no  assurance  that these
products or compounds will be considered cost-effective or that reimbursement to
the consumer will be available or will be sufficient to allow the Company or its
potential  collaborative partners to sell the Company's products or compounds on
a  competitive  basis.  The business and financial  condition of  pharmaceutical
companies  will continue to be affected by economic,  political  and  regulatory
influences,  including  the efforts of  governments  and  third-party  payors to
contain or reduce the cost of health care  through  various  means.  A number of
legislative  and regulatory  proposals  aimed at changing the health care system
have been proposed in recent years. Because of the high cost of the treatment of
AIDS or HIV using combination  therapy,  many state legislatures are reassessing
reimbursement  policies for such therapy. In addition, an increasing emphasis on
managed care in the United States to reduce the overall costs of health care has
and will continue to increase the pressure on pharmaceutical  pricing. While the
Company  cannot  predict  whether  legislative  or regulatory  proposals will be
adopted or the effect those  proposals  or managed  care  efforts may have,  the
announcement  and/or adoption of such proposals or efforts could have a material
adverse  effect on the Company's  business,  financial  condition and results of
operations.

     Hazardous Materials. The Company's product development programs involve the
controlled  use  of  hazardous   materials,   chemicals,   viruses  and  various
radioactive compounds, including Class IV type hazardous materials. Although the
Company  believes that its handling and disposing of such materials  comply with
the  standards  prescribed  by  state  and  federal  regulations,  the  risk  of
accidental  contamination  or injury from these  materials  cannot be completely
eliminated.  In the event of such an accident,  the Company could be held liable
for any damages or fines that  result and any such  liability  could  exceed the
resources of the Company. The Company may incur substantial  additional costs to
comply with  environmental  regulations  if the Company  develops  manufacturing
capacity.

     Absence Of Product  Liability  Insurance;  Insurance  Risks.  The Company's
business will expose it to potential  product  liability risks that are inherent
in the testing,  manufacturing and marketing of pharmaceutical  products.  There
can be no assurance that product  liability  claims will not be asserted against




                                       20
<PAGE>


the  Company.  In  addition,  the use of  pharmaceutical  products  that  may be
developed by the Company's  potential  collaborators  in clinical trials and the
subsequent  sale of products by the Company or its potential  collaborators  may
cause the  Company  to bear a  portion  of those  risks.  A  successful  product
liability  claim or series of claims  brought  against the Company  could have a
material  adverse  effect on the  Company's  business,  financial  condition and
results of operations. The Company does not currently have any product liability
insurance  relating  to clinical  trials or any  products  or  compounds  it may
develop and there can be no assurance that the Company will be able to obtain or
maintain adequate product liability insurance on acceptable terms, if at all, or
that  such  insurance  will  provide   adequate   coverage   against   potential
liabilities.  Furthermore,  there can be no assurance that any  collaborators or
licensees of the Company will agree to indemnify  the Company,  be  sufficiently
insured, or have a net worth sufficient to satisfy any product liability claims.
Claims or losses in excess of any product liability  insurance coverage that may
be obtained by the Company could have a material adverse effect on the Company's
business, financial condition and results of operations.

     Need To Attract And Retain Key  Officers,  Employees And  Consultants.  The
Company is highly  dependent  upon the efforts of the  principal  members of its
scientific and management staff. The loss of the services of one or more members
of the Company's  scientific or management  staff could  significantly  delay or
prevent the  achievement  of the  Company's  research,  development  or business
objectives and could have a material  adverse effect on the Company's  business,
financial condition and results of operations.  At present, the Company only has
individual  employment  agreements  with Dr.  M.  Ross  Johnson,  the  Company's
President, Chief Executive Officer and Chief Scientific Officer, and Mr. Matthew
A. Megaro,  the Company's Chief  Operating  Officer,  Chief  Financial  Officer,
Executive  Vice  President and  Secretary.  In addition,  the Company  relies on
consultants  and  advisors,  including  the members of its  Scientific  Advisory
Board,  to assist the  Company  in  formulating  its  research  and  development
strategy.  The  loss  of the  services  of  certain  members  of  the  Company's
Scientific  Advisory Board or certain consultants could materially and adversely
affect the  Company to the extent  that the  Company  is  pursuing  research  or
development in areas of such scientific advisor's or consultant's expertise. Due
to the specialized  scientific nature of the Company's business,  the Company is
also  highly  dependent  upon  its  ability  to  attract  and  retain  qualified
scientific, technical and key management personnel. There is intense competition
for  qualified  personnel in the areas of the  Company's  activities by academic
institutions, biotechnology companies and pharmaceutical companies and there can
be no assurance  that the Company will be able to continue to attract and retain
the qualified  personnel  necessary for the development of its existing business
and its expansion into areas and activities requiring additional expertise.  The
loss of, or failure to recruit, scientific,  technical, and managerial personnel
could  have a  material  adverse  effect on the  Company's  business,  financial
condition and results of operations.

     The Company's  scientific  advisors and  consultants  may be employed by or
have consulting  agreements with entities other than the Company,  some of which
may  compete  with the  Company.  To the extent  that  members of the  Company's
Scientific  Advisory Board or the consultants have consulting  arrangements with
or become  employed by any  competitor of the Company,  the Company's  business,
financial  condition or results of operations  could be materially and adversely
affected.  Under certain  circumstances,  inventions or processes  independently
discovered  by the  scientific  advisors  or the  consultants  will  remain  the
property of such persons or their employers.  In addition, the institutions with
which the  scientific  advisors  and the  consultants  are  affiliated  may make
available the research services of their scientific and other skilled personnel,
including the  scientific  advisors and the  consultants,  to competitors of the
Company pursuant to sponsored research agreements. Under such sponsored research
agreements,  such  institutions  may be  obligated  to  assign or  license  to a
competitor of the Company  patents and other  proprietary  information  that may
result from  research  sponsored by an entity other than the Company,  including
research  performed by a scientific  advisor or a consultant for a competitor of
the Company.

     The  Company  requires  all  employees,  consultants  and  certain  of  its
contractors  to  enter  into   confidentiality   agreements  that  prohibit  the
disclosure of confidential information to anyone outside the Company and require
disclosure  and  assignment  to  the  Company  of  their  ideas,   developments,
discoveries  or inventions  developed  during the course of their service to the
Company. However, no assurance can be given that competitors of the Company will
not gain access to trade secrets and other proprietary  information developed by
the Company and disclosed to the scientific advisors and the consultants.



                                       21
<PAGE>

     Control By  Directors,  Executive  Officers And  Affiliated  Entities.  The
Company's  directors,  executive officers and entities  affiliated with them, in
the aggregate, beneficially own approximately 28.7% of the Company's outstanding
shares of Common. As a result, these stockholders,  if acting together, are able
to significantly influence all matters requiring approval by the stockholders of
the Company, including the election of directors and the approval of mergers and
consolidations,  sales of all or substantially  all of the assets of the Company
or other business combination  transactions.  This may discourage a tender offer
for the Company's Common Stock or a change in control of the Company.

     Anti-Takeover Effect Of Certain Charter And Bylaw Provisions. The Company's
Board of Directors is authorized  to issue up to 10,000,000  shares of Preferred
Stock and to determine the price,  rights,  preferences and limitations of those
shares  without any further vote or action by the  Company's  stockholders.  The
rights of the holders of Common  Stock will be subject to, and may be  adversely
affected by, the rights of the holders of any Preferred Stock that may be issued
in the future.  While the Company has no present  intention  to issue  shares of
Preferred Stock, such issuance could have the effect of making it more difficult
for a third party to acquire a majority of the  outstanding  voting stock of the
Company. In addition, the Company is subject to the provisions of Section 203 of
the Delaware  General  Corporation  Law (the "DGCL")  which,  subject to certain
exceptions, prohibits the Company from engaging in certain business combinations
with certain  stockholders  (each, an "interested  stockholder") for a period of
three years after the date of the transaction in which the stockholder became an
interested  stockholder,  unless  the  business  combination  is  approved  in a
prescribed  manner.  The  application  of  Section  203 could have the effect of
delaying or preventing a change of control of the Company.  The Company's  Third
Amended and Restated  Certificate of Incorporation  provides for staggered terms
for the members of the Board of Directors. The staggered Board of Directors, the
Company's Third Amended and Certificate of Incorporation and certain  provisions
of the DGCL may have the effect of delaying, deterring or preventing a change in
control of the Company,  may  discourage  bids for the Common Stock at a premium
over the market price and may adversely  affect the market price, and the voting
and other rights of the holders, of the Common Stock.

      Possible  Volatility  Of  Stock  Price.  The  Company's  stock  price  has
fluctuated  substantially  since its initial  public  offering was  completed in
October 1997. The market price of the Common Stock,  like that of the securities
of many other biotechnology and pharmaceutical companies, is likely to be highly
volatile.  Factors such as  announcements  of  technological  innovations or new
products  by the  Company or its  competitors,  preclinical  testing or clinical
trial  results  relating  to or  regulatory  approvals  or  disapprovals  of the
Company's or competitors' product candidates, government regulation, health care
legislation,  developments or disputes  concerning  patent or other  proprietary
rights of the Company or its competitors, including litigation,  fluctuations in
the Company's  operating results,  changes in the  recommendations of securities
analysts,   and  market  prices  of  the  capital  stock  of  biotechnology  and
pharmaceutical  companies  in  general  could have a  significant  impact on the
future market price of the Common Stock. In addition,  the stock market has from
time to time  experienced  extreme  price and  volume  fluctuations  that may be
unrelated to the operating performance of particular companies.  In addition, in
the past,  following periods of volatility in the market price of the securities
of companies in the  biotechnology  and  pharmaceutical  industries,  securities
class action litigation has often been instituted against those companies.  Such
litigation, if instituted against the Company, could result in substantial costs
and a  diversion  of  management  attention  and  resources,  which would have a
material  adverse  effect on the  Company's  business,  financial  condition and
results of operations.  The  realization of any of the risks  described in these
"Risk  Factors"  could have a dramatic and adverse impact on the market price of
the Common Stock.

     No Dividends.  The Company has not paid cash  dividends on its Common Stock
since  its  inception  and does not  anticipate  paying  cash  dividends  in the
foreseeable future.

Item 2.  Properties

     The Company currently leases approximately 21,000 square feet of laboratory
and office space at 4727 University  Drive,  Suite 100, Durham,  North Carolina.
The  Company  leases  this space  under a sublease  agreement  which  expires on
September 30, 1999. Depending on the results of clinical trials and the progress




                                       22
<PAGE>


of  the  Company's  product  development  programs,   the  Company  may  require
facilities in addition to those currently under lease. The Company believes that
there will be suitable facilities available as needed.

Item 3.  Legal Proceedings

     The Company is not a party to any material legal proceedings as of the date
of this Form 10-K.

Item 4.  Submission of Matters to a Vote of Security Holders

    No matters were  submitted to a vote of security  holders  during the fourth
quarter of 1997.


                                    PART II.


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

     The Company's  Common Stock has traded on the NASDAQ National Market System
under the NASDAQ symbol "TRMS" since the Company's  initial  public  offering at
$12.00 per share was  consummated  on October 7, 1998.  The Company has not paid
cash dividends in the past and none are expected to be paid in the future. As of
March 20, 1998, the Company had  approximately  118 shareholders of record,  and
believes it has approximately 500 beneficial  shareholders.  The following table
sets forth the high and low closing sales prices for the Company's  Common Stock
since public  trading  commenced  on October 7, 1997.  Such  quotations  reflect
inter-dealer  prices  without  mark-up,  mark-down  or  commissions  and may not
necessarily represent actual transactions.


                                                Year ended December 31, 1997
                                                    High            Low
                                                -------------- ---------------
        1st Quarter...........................        *              *
        2nd Quarter...........................        *              *
        3rd Quarter...........................        *              *
        4th Quarter...........................     $17.00          $11.88


*    The Company's Common Stock began trading on October 7, 1997.


Use of Proceeds:

     The  effective  date of the Company's  Registration  Statement on Form S-1,
registering  2,875,000  shares of Common  Stock of the  Company,  was October 6,
1997. A subsequent  registration  statement on Form S-1, SEC File No. 333-37319,
filed  pursuant  to  Rule  462(b)  promulgated  under  the  Securities  Act  and
registering  287,500  additional  shares of Common  Stock,  was filed and became
effective on October 7, 1997.

     The date of the commencement of the offering of such registered  shares was
October 7, 1997,  and the offering  terminated  on November  12, 1997,  upon the
closing  of the  underwriters'  exercise  of their  over-allotment  option  with
respect to 412,500 of the registered  shares.  The managing  underwriters in the
offering were UBS Securities LLC and NationsBanc Montgomery Securities, Inc.



                                       23
<PAGE>


Information  concerning the  registered  shares as of the date of this report is
set forth below:

<TABLE>
<CAPTION>
                                   Title of Security:                            Common Stock
                                   ------------------                            ------------
<S>                                                                                <C>
       Amount Registered:........................................................     3,162,500
       Aggregate Price of the Offering Amount Registered:........................  $ 37,950,000
       Amount Sold:..............................................................     3,162,500
       Aggregate Offering Price of Amount Sold:..................................  $ 37,950,000

Actual expenses  incurred to date by the Company in connection with the issuance
and distribution of the registered shares are as follows:

       Underwriting Discounts and Commissions:...................................  $  2,656,500
       Finders' Fee:.............................................................          --
       Expenses Paid To or For Underwriters:.....................................          --
       Other Expenses:...........................................................       761,500
                                                                                   ------------
       Total:....................................................................  $  3,418,000
                                                                                   ============
</TABLE>

All of the expenses listed above were direct or indirect  payments to others and
not payments to  directors,  officers,  affiliates  or 10%  stockholders  of the
Company.  The amount of net  offering  proceeds to the  Company  after the total
expenses listed above is approximately $34,532,000.

A  reasonable  estimate of the amount of the net offering  proceeds  used by the
Company from the effective date of the Registration Statement on Form S-1 to the
date of this report for each of the purposes listed below is as follows:

   Construction of Plant, Building and Facilities:               $       --  
   Purchase and Installation of  Machinery and  Equipment        $       --  
   Purchase of Real Estate:                                      $       --
   Acquisition of Other  Businesses:                             $       --  
   Repayment of Indebtedness:                                    $       --  
   Working Capital:                                              $       --  
   Temporary Investments:                                        $       --  
   Short Term:                                                   $  34,532,000
   Long Term:                                                    $       --  
   Other (specify):                                              $       --  
   Other Purposes for which at least 5% of  the Total Proceeds               
      (or $100,000, whichever is less) Has Been Used             $       --  

     All of the  above-referenced  payments were direct or indirect  payments to
others and not payments to directors,  officers,  affiliates or 10% stockholders
of the Company.  The use of proceeds  listed above does not represent a material
change in the use of proceeds  described in the Company's  Prospectus filed as a
part of the Registration Statement on Form S-1.



                                       24
<PAGE>

Item 6.  Selected Financial Data

                             SELECTED FINANCIAL DATA

     The selected  financial  data set forth below with respect to the Company's
Statements of Operations  for the years ended  December 31, 1995,  1996 and 1997
and with  respect to the  Company's  Balance  Sheets as of December 31, 1996 and
1997 are derived from the audited Financial  Statements of the Company which are
included  elsewhere  in this Form 10-K and are  qualified  by  reference to such
Financial  Statements  and the related Notes  thereto.  Statements of Operations
data for the period from inception  (January 7, 1993) through  December 31, 1993
and the year ended  December  31,  1994 and Balance  Sheet data at December  31,
1993, 1994 and 1995 are derived from audited Financial Statements of the Company
not included herein. The selected financial data set forth below is qualified in
its  entirety  by,  and  should  be  read in  conjunction  with,  the  Financial
Statements,  the related Notes thereto and "Management's Discussion and Analysis
of Financial  Condition and Results of  Operations"  included  elsewhere in this
Form 10-K.

<TABLE>
<CAPTION>
                                Period
                                 from                                                     Cumulative
                               Inception                                                     from
                               (January                                                    Inception
                                7, 1993)                                                   (January 7,
                                through          For the Years Ended December 31,           1993) to
                               December    --------------------------------------------   December 31,
                               31, 1993      1994        1995        1996        1997        1997
                               --------    --------    --------    --------    --------   -----------
                                                (in thousands, except per share data)
<S>                            <C>         <C>         <C>         <C>         <C>         <C>
Statements of Operations
Data:
Revenue .....................  $   --      $   --      $    104    $     55    $    431    $    590
                               --------    --------    --------    --------    --------    --------
Operating expense:
Research and development
   expenses .................       691       2,747       4,012       5,146       9,734      22,330
General and administrative
   expenses .................       631         947       1,520       1,761       2,596       7,456
                               --------    --------    --------    --------    --------    --------
Total operating expenses ....     1,322       3,694       5,532       6,907      12,330      29,786
                               --------    --------    --------    --------    --------    --------
Operating loss ..............    (1,322)     (3,694)     (5,428)     (6,852)    (11,899)    (29,196)
                               --------    --------    --------    --------    --------    --------
Interest income .............        16           8          49          47         584         706
Interest expense ............        (5)       (258)       (360)       (167)       (113)       (903)
                               --------    --------    --------    --------    --------    --------
Total other income ..........        11        (250)       (311)       (120)        471        (197)
                               ========    ========    ========    ========    ========    ========
Net loss ....................  $ (1,311)   $ (3,944)   $ (5,739)   $ (6,972)   $(11,428)   $(29,393)
                               ========    ========    ========    ========    ========    ========
Basic net loss per share(1) .                                         (1.48)      (1.55)
                                                                   ========    ========
Weighted average shares used
 in computing basic net loss
 per share(1) ...............                                         4,705       7,395
                                                                   ========    ========
</TABLE>

(1)  Computed on the basis described in Note 1 to Financial Statements.


                                       25
<PAGE>


<TABLE>
<CAPTION>
                                                          As of December 31,
                                      ---------------------------------------------------------
                                        1993         1994        1995        1996       1997
                                      --------    ----------  ---------   ----------  ---------
                                                                (in thousands)
<S>                                   <C>         <C>         <C>         <C>         <C>     
Balance Sheet Data:
Cash and cash equivalents             $    509    $    277    $  1,343    $    132    $ 32,557
Working capital (deficiency)               183      (4,067)        322      (1,305)     34,733
Total assets                             1,802       1,873       3,058       1,684      38,844
Long-term notes payable and capital
  lease obligations, less current          
  portion                                  401         751         703         575         240
Accumulated deficit                     (1,311)     (5,254)    (10,994)    (17,965)    (29,393)
Total stockholders' equity (deficit)       701      (3,236)      1,324        (409)     35,810
</TABLE>


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

     The  following  discussion  of  the  financial  condition  and  results  of
operations  of the  Company  should be read in  conjunction  with the  financial
statements and the related notes thereto  included  elsewhere in this Form 10-K.
This  Form 10-K  contains  forward-looking  statements  that  involve  risks and
uncertainties.  The results of the Company's  previous  clinical  trials are not
necessarily  indicative of future  clinical trials and actual results may differ
significantly  from the results  discussed  in the  forward-looking  statements.
Factors that might cause or contribute to such differences  include, but are not
limited to, those discussed under the headings "Risk Factors" and "Business", as
well as  those  discussed  elsewhere  in this  Form  10-K.  Further  information
regarding  these  factors,  as well as other  factors  that could  cause  actual
results  to differ  materially  from  those  set  forth in such  forward-looking
statements,  is  discussed  under the  heading  "Risk  Factors"  included in the
Company's S-1 Registration Statement as declared effective by the Securities and
Exchange  Commission (SEC) on October 6, 1997 and from time to time in Trimeris'
filings with the SEC, which should be read in  conjunction  with this Form 10-K.
The Company  undertakes  no  obligation  to release  publicly the results of any
revisions  to the  statements  contained  in this  report to  reflect  events or
circumstances arising after the date hereof.

Overview

     Trimeris  commenced  operations  in January 1993,  has a limited  operating
history and is a development stage company.  Since its inception,  substantially
all  of  the  Company's  resources  have  been  dedicated  to  the  development,
patenting,  preclinical  testing and a Phase I/II  clinical  trial of T-20,  the
development of a manufacturing process for T-20, production of drug material for
future clinical trials, the development of its proprietary  technology  platform
and research and development and preclinical  testing of other potential product
candidates  and compounds  discovered  by the Company.  The Company has incurred
losses since its  inception  and, as of December 31,  1997,  had an  accumulated
deficit of approximately $29.4 million.  The Company has received revenue solely
from SBIR  grants and an  investigative  contract  and has yet to  generate  any
revenue from product sales or royalties,  and there can be no assurance  that it
will be able to generate any such revenues or royalties in the future.

    Product  candidates  and  compounds  discovered by the Company and developed
through the Company's  product  development  programs  will require  significant
additional,  time-consuming  and costly  research and  development,  preclinical
testing and extensive  clinical  trials prior to  submission  of any  regulatory
application  for  commercial  use.  The Company has  incurred  losses  since its
inception.  Such losses have resulted  principally from expenses incurred in the
Company's research and development  activities  associated with the development,
patenting,  preclinical  testing and a Phase I/II  clinical  trial of T-20,  the
development of a manufacturing process for T-20, production of drug material for
future clinical trials, the development of its proprietary  technology platform,
research and  development and  preclinical  testing of other  potential  product
candidates  and  compounds  discovered  by the  Company,  and from  general  and
administrative expenses. The Company expects to incur substantial losses for the
foreseeable  future and expects losses to increase as the Company's research and
development,  preclinical testing,  drug production,  and clinical trial efforts
expand. The amount and timing of the Company's operating expenses will depend on
several factors,  including the status of the Company's research and development
activities,  product candidate and compound  discovery and development  efforts,
including  preclinical  testing and clinical  trials,  the timing of  regulatory
actions,  the costs  involved in preparing,  filing,  prosecuting,  maintaining,
protecting and enforcing patent claims and other proprietary rights, the ability
of the Company to  establish,  internally  



                                       26
<PAGE>


or through relationships with third parties, manufacturing, sales, marketing and
distribution  capabilities,  technological  and other changes in the competitive
landscape,   changes  in  the  Company's   existing   research  and  development
relationships and strategic alliances, evaluation of the commercial viability of
potential product candidates and other factors, many of which are outside of the
Company's  control.  As a result,  the Company  believes  that  period-to-period
comparisons of financial  results in the future are not  necessarily  meaningful
and  results of  operations  in prior  periods  should not be relied  upon as an
indication of future performance. Any deviations in results from operations from
levels  expected by  securities  analysts  and  investors  could have a material
adverse effect on the market price of the Common Stock. The Company's ability to
achieve  profitability  will  depend,  in  part,  upon  its or its  collaborated
partners'  ability to successfully  develop and obtain  regulatory  approval for
T-20 and other product candidates and compounds  discovered by the Company,  and
to develop the capacity,  either internally or through  relationships with third
parties, to manufacture,  sell, market and distribute approved products, if any.
There  can be no  assurance  that the  Company  will ever  generate  significant
revenues or achieve profitable operations.

Results Of Operations

Comparison Of Years Ended December 31, 1995, 1996 And 1997

     Revenue. Total revenue was approximately $104,000, $55,000 and $431,000 for
1995,  1996 and 1997,  respectively.  An SBIR grant was  received  in 1995,  and
revenue was recognized as earned under this grant in 1995 and 1996. During 1997,
approximately $331,000 was received under SBIR grants, and $100,000 was received
under an investigative contract.

     Research And Development Expenses.  Total research and development expenses
increased from  approximately $4.0 million in 1995 to approximately $5.1 million
in 1996 and increased to  approximately  $9.7 million in 1997. The increases are
primarily due to increased  costs  related to  additional  personnel and related
laboratory  research  supplies to support  these  personnel.  During  1996,  the
Company began a Phase I/II clinical trial for T-20 and incurred costs associated
with these  clinical  trials which  continued  into 1997. To supply the clinical
trials  during  1997,  the  Company  purchased  drug  material  from third party
manufacturers,  and created an in-house group dedicated to the development of an
improved  manufacturing  process. Total research personnel were 25, 25 and 29 at
December 31, 1995, 1996 and 1997, respectively. The Company expects its research
and  development  expenses  to  increase  substantially  in  the  future  due to
continued expansion of product  development  activities,  including  preclinical
research and testing,  expanded  clinical  trials,  and the  manufacture of drug
material.

     General And  Administrative  Expenses.  Total  general  and  administrative
expenses increased from approximately $1.5 million in 1995 to approximately $1.8
million in 1996,  and  increased to  approximately  $2.6 million in 1997.  These
increases are primarily due to increased  costs related to additional  personnel
and professional fees incurred in the patent  application  process.  The Company
expects  its  administrative  expenses  to increase in the future to support the
expansion of its product development activities.

     Other Income (Expense).  Other income (expense) consists of interest income
and expense.  Total other expense decreased from approximately  $311,000 in 1995
to approximately  $120,000 in 1996 due to decreased  interest expense on capital
leases.  Total other income was  approximately  $471,000 in 1997 due to a slight
decrease in interest  expense on capital  leases and a  significant  increase in
interest income due to investment of proceeds  received in the Company's initial
public offering in October, 1997.


Liquidity And Capital Resources

     Since inception,  the Company has financed its operations primarily through
the  private  placement  of  equity   securities,   the  issuance  of  notes  to
stockholders,  equipment  lease  financing,  and an initial  public  offering in
October  1997.  Net cash used by operating  activities  was  approximately  $4.8
million, approximately $5.8 million and approximately $9.0 million in 1995, 1996
and 1997, respectively. The cash used by operating activities was used primarily
to fund research and development and general and administrative  expenses.  Cash
provided by financing  activities was approximately $6.1 million,



                                       27
<PAGE>


approximately  $4.8 million,  and approximately  $46.5 million in 1995, 1996 and
1997, respectively. The cash provided by financing activities was primarily from
the sale of equity securities and notes to stockholders.

     As of December 31, 1997,  the Company had  approximately  $37.4  million in
cash and cash equivalents and short-term investments,  compared to approximately
$132,000 as of December 31,  1996.  The  increase  resulted  from the receipt of
approximately  $12.8 million from the sale of private equity  securities and the
Company's initial public offering of $34.5 million during 1997, partially offset
by approximately $9.0 million used by operations.

     The Company has experienced  negative cash flows from operations  since its
inception and does not anticipate  generating  sufficient positive cash flows to
fund its operations in the  foreseeable  future.  The Company has expended,  and
expects to  continue to expend in the  future,  substantial  funds to pursue its
product  candidate and compound  discovery and  development  efforts,  including
expenditures for continued clinical trials of T-20, research and development and
preclinical testing of other product candidates and compounds  discovered by the
Company,  manufacture of drug material,  and the  development of its proprietary
technology  platform.  As of December 31, 1997,  the Company had  commitments of
approximately  $1 million  to  purchase  product  candidate  materials  and fund
various  clinical  studies,  and expects to expend  approximately  $1 million in
capital  expenditures  during  1998.  These  expenditures  may be financed  with
capital or operating leases,  debt or working capital.  The Company expects that
its existing capital resources,  together with the interest earned thereon, will
be  adequate  to fund  its  capital  requirements  through  1998.  However,  the
Company's  future capital  requirements and the adequacy of available funds will
depend on many factors, including the results of the clinical trials relating to
T-20, the progress and scope of the Company's product development programs,  the
magnitude of these  programs,  the results of  preclinical  testing and clinical
trials,  the need  for  additional  facilities  based  on the  results  of these
clinical trials and other product development programs, changes in the focus and
direction of the Company's product development  programs,  the costs involved in
preparing,  filing,  processing,  maintaining,  protecting and enforcing  patent
claims  and  other  intellectual   property  rights,   competitive  factors  and
technological  advances,  the cost,  timing and outcome of  regulatory  reviews,
changes  in the  requirements  of the FDA,  administrative  and legal  expenses,
evaluation  of the  commercial  viability of potential  product  candidates  and
compounds,   the  establishment  of  capacity,   either  internally  or  through
relationships  with third  parties,  for  manufacturing,  sales,  marketing  and
distribution  functions  and other  factors,  many of which are  outside  of the
Company's  control.  Thus,  there can be no assurance  that the current cash and
investment  balance,   together  with  the  interest  earned  thereon,  will  be
sufficient  to  fund  the  Company's  capital  requirements  during  the  period
discussed above. The Company believes that substantial  additional funds will be
required  to  continue  to fund its  operations  and that  the  Company  will be
required  to  obtain  additional  funds  through  equity  or debt  financing  or
licenses,  agreements  or other  arrangements  with  collaborative  partners and
others,  or from other sources.  The terms of any such equity  financings may be
dilutive  to  stockholders  and the  terms of any debt  financings  may  contain
restrictive  covenants  which  limit the  Company's  ability  to pursue  certain
courses of action.  There can be no assurance  that such funds will be available
to the Company on acceptable  terms,  if at all, or that such financings will be
adequate to meet the Company's  future capital  requirements.  If adequate funds
are not available, the Company may be required to delay, scale-back or eliminate
certain  aspects of its  preclinical  testing,  clinical trials and research and
development  programs  or  attempt to obtain  funds  through  arrangements  with
collaborative  partners or others  that may  require  the Company to  relinquish
rights to certain of its technologies or product candidates or compounds,  which
could  have a  material  adverse  effect on the  Company's  business,  financial
condition and results of operations.

Net Operating Loss Carryforwards

     As of December 31, 1997, the Company had a net operating loss  carryforward
of approximately $28.3 million. The Company has recognized a valuation allowance
equal to the deferred asset  represented by this net operating loss carryforward
and therefore  recognized no tax benefit.  The Company's  ability to utilize its
net  operating  loss  carryforwards  may be subject to an annual  limitation  in
future periods  pursuant to the "change in ownership rules" under Section 382 of
the Internal Revenue Code of 1986, as amended.  See Note 6 of Notes to Financial
Statements. 


                                       28
<PAGE>


Accounting and Other Matters

     In June  1997,  the FASB  issued  SFAS No.  130,  "Reporting  Comprehensive
Income" ("Statement 130"). Statement 130 establishes standards for reporting and
display  of   comprehensive   income  and  its  components  in  a  full  set  of
general-purpose  financial statements. It does not address issues of recognition
or measurement for  comprehensive  income and its components.  The provisions of
Statement 130 are effective for fiscal years  beginning after December 15, 1997.
The  Company  plans to adopt  this  statement  in fiscal  1998 and will make the
necessary disclosures of comprehensive income for periods beginning in 1998.

     In June 1997, the FASB issued SFAS No. 131,  "Disclosures about Segments of
an Enterprise and Related Information" ("Statement 131"). Statement 131 requires
that public  business  enterprises  report certain  information  about operating
segments in complete sets of financial  statements  issued to  shareholders.  It
also requires that public business  enterprises report certain information about
their  products and  services,  the  geographic  areas in which they operate and
their major customers.  The provisions of Statement 131 are effective for fiscal
years beginning after December 15, 1997.  Adoption of this  pronouncement is not
expected to have a material effect on the Company's financial statements.

     In February  1998,  the FASB issued SFAS No. 132,  "Employers'  Disclosures
about  Pensions and Other  Postretirement  Benefits". This  statements  does not
change any measurement or recognition  provisions,  and thus will not materially
impact the Company. This statement is effective for fiscal years beginning after
December 15, 1997.

     The FASB also issues exposure  drafts for proposed  statements of financial
accounting  standards.  Such  exposure  drafts are  subject to comment  from the
public, to revisions by the FASB and to final issuance by the FASB as statements
of  financial  accounting  standards.  Management  considers  the  effect of the
proposed  statements  on the  financial  statements of Trimeris and monitors the
status of changes to issued exposure drafts and to proposed effective dates.

     The Company has reviewed its critical computer  applications for the impact
that the year 2000 and the  requirement  for four digit  fields to identify  the
year will have on its operations.  The Company believes that the cost to convert
any non-compliant critical applications will be immaterial, and the consequences
of any non-compliant applications will be insignificant.

Item 8.  Financial Statements and Supplementary Data

     The  information  required  by Item 8 is  included  in Item 14 of this Form
10-K.

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

     There  have  been  no  changes  in  or  disagreements  with  the  Company's
independent auditors, KPMG Peat Marwick LLP.




                                       29
<PAGE>



                                    PART III


Item 10. Directors and Executive Officers of the Registrant

     The  information  required by Item 10 as to  directors is  incorporated  by
reference from the Company's Proxy Statement to be filed by the Company with the
Securities and Exchange  Commission  within 120 days after the end of the fiscal
year.

     The  following  table  sets  forth  certain  information  with  respect  to
executive officers, directors and certain key employees of the Company:

<TABLE>
<CAPTION>
NAME                                  AGE        POSITION
- ----                                  ---        --------
<S>                                    <C>       <C>
M. Ross Johnson, Ph.D...............   53        President, Chief Executive Officer, Chief Scientific
                                                   Officer and Director

Matthew A. Megaro...................   39        Chief Operating Officer, Chief Financial Officer,
                                                   Executive Vice President and Secretary

Samuel Hopkins, Ph.D................   39        Vice President of Medical Affairs

Dennis M. Lambert, Ph.D.............   50        Vice President of Biological and Molecular Sciences

M.C. Kang, Ph.D.....................   46        Director of Chemistry

Michael A. Recny, Ph.D..............   42        Director of Business Development

Timothy J. Creech...................   37        Director of Finance and Administration

Jesse I. Treu, Ph.D.(1).............   50        Chairman of the Board of Directors

Dani P. Bolognesi, Ph.D.(2).........   57        Director

Brian H. Dovey(2)...................   56        Director

Charles A. Sanders, M.D.(1)(2)......   66        Director
</TABLE>

(1)  Member of the Audit Committee.

(2)  Member of the Compensation Committee.


                                       30
<PAGE>


M. Ross  Johnson,  Ph.D.  joined the Company as Chief  Scientific  Officer and a
Director in January 1995 and was named President and Chief Executive  Officer in
March 1996.  Prior to joining the Company,  Dr.  Johnson was President and Chief
Executive  Officer  of  Parnassus   Pharmaceuticals,   Inc.   ("Parnassus"),   a
biopharmaceutical  company,  from March 1994 to October  1994.  In October 1994,
Parnassus  filed for protection  under the United States  Bankruptcy  Code. From
1987 to March  1994,  Dr.  Johnson  served  as Vice  President  of the  Chemical
Development  Division  and  Division of  Chemistry,  respectively,  at Glaxo,  a
multinational pharmaceutical company. Prior to joining Glaxo, Dr. Johnson held a
number of  scientific  management  positions  at Pfizer  Inc.,  a  multinational
pharmaceutical  company.  Dr.  Johnson  received  his Ph.D.  degree  in  Organic
Chemistry from the University of California at Santa Barbara.

Matthew  A.  Megaro  joined  the  Company as Chief  Financial  Officer  and Vice
President of Business  Development  in March 1995 and was named Chief  Operating
Officer,  Executive  Vice  President  and Secretary of the Company in June 1997.
Prior to  joining  the  Company,  Mr.  Megaro  was Chief  Operating  Officer  of
Parnassus  from January 1994 to October 1994. In October 1994,  Parnassus  filed
for  protection  under the  United  States  Bankruptcy  Code.  Prior to  joining
Parnassus,  Mr. Megaro was Chief Financial Officer and Vice President of Finance
and Administration of Athena Neurosciences,  Inc., a biopharmaceutical  company,
from 1988 to January 1994.

Samuel  Hopkins,  Ph.D.  joined the Company as Director of Drug  Development  in
April 1995 and was named Vice President of Medical  Affairs in June 1997.  Prior
to joining the Company,  Dr. Hopkins was Director of Oncology and Antiviral Drug
Product  Development and Senior Clinical Research  Scientist,  respectively,  at
Cato Research,  Ltd., a contract research  organization from 1991 to April 1995.
From 1987 to 1991, Dr. Hopkins was a Senior  Research  Scientist in the Division
of Virology at Burroughs Wellcome Co., a multinational  pharmaceutical  company.
Dr. Hopkins  received his Ph.D.  degree in Biochemisty  and Biophysics  from the
Medical College of Virginia.

Dennis M.  Lambert,  Ph.D.  joined the  Company as Director of Virology in March
1993, was named Senior  Director of Virology and Molecular  Biology in September
1995,  and was named Vice  President of  Biological  Molecular  Sciences in June
1997.  Prior to  joining  the  Company,  Dr.  Lambert  was  Assistant  Director,
Department of Molecular Virology and Host Defense,  at SmithKline Beecham Corp.,
a pharmaceutical company, from 1988 to July 1993. Dr. Lambert received his Ph.D.
degree in Microbiology/Virology from Indiana State University at Terre Haute.

M.C.  Kang,  Ph.D.  joined the Company as a  consultant  in October 1995 and was
named  Director of Chemistry in August 1996.  Prior to joining the Company,  Dr.
Kang held various  positions at Glaxo from 1990 to October  1995,  most recently
serving as Director of Chemical  Development.  Prior to joining Glaxo,  Dr. Kang
was a Development  Chemist in the Medical  Products  Division at E.I.  DuPont de
Nemours and Company, a chemical company from 1986 to 1990. Dr. Kang received his
Ph.D. degree in Synthetic Organic Chemistry from Oregon State University.

Michael A. Recny,  Ph.D. joined the Company as Director of Biochemical  Sciences
in March 1995, and was named Director of Business  Development in November 1996.
Prior to joining  the  Company,  Dr.  Recny was Senior  Director  of  Biological
Sciences at Parnassus from November 1993 to October 1994.  From 1988 to November
1993,  Dr.  Recny was  Director  of Protein  Biochemistry  at Procept,  Inc.,  a
biopharmaceutical company. Prior to joining Procept, Inc., Dr. Recny was a Staff
Scientist/Laboratory  Head  at  Genetics  Institute  Inc.,  a  biopharmaceutical
company. Dr. Recny received his Ph.D. degree in Biochemistry from the University
of Illinois at Urbana-Champaign.

Timothy  J.  Creech,  C.P.A.  joined  the  Company as  Director  of Finance  and
Administration  in July  1997.  Prior to joining  the  Company,  Mr.  Creech was
Corporate Controller at Performance Awareness  Corporation,  a software company,
from July 1996 to June 1997.  From  December  1993 to July 1996,  Mr. Creech was
Director  of Finance at Avant!  Corporation,  a software  company.  From 1990 to
December  1993,  Mr.  Creech  was a senior  manager  at KPMG Peat  Marwick  LLP,
independent auditors for the Company.

Jesse I. Treu,  Ph.D. has been Chairman of the Board of Directors of the Company
since its inception. Dr. Treu has been a general partner of Domain Associates, a
venture capital firm  specializing in investments in



                                       31
<PAGE>


life sciences, since 1986. Dr. Treu serves on the Boards of Directors of Biosite
Diagnostics,  Inc. and GelTex Pharmaceuticals,  Inc. Dr. Treu received his Ph.D.
in Physics from Princeton University.

Dani P.  Bolognesi,  Ph.D.  was a founder of the Company and has been a Director
since  its  inception.  Dr.  Bolognesi  has held a number of  positions  at Duke
University  since 1971,  and now serves as James B. Duke  Professor  of Surgery,
Professor of Microbiology/Immunology, Vice Chairman of the Department of Surgery
for Research and Development and Director of the Duke University Center for AIDS
Research. Dr. Bolognesi is the Co-Chair of the National Institute of Allergy and
Infectious Diseases Vaccine Working Group ("NIAID"), Chair of the Office of AIDS
Research  Coordinating  Committee  for  Vaccines,  Chair of the  Office  of AIDS
Research Task Force Vaccine Research and Development Area Review Panel, Chair of
the panel to recommend  strategies  for the long-term  care of the United States
biomedical chimpanzee population, and is a member of the NIAID Vaccine Selection
Committee. Dr. Bolognesi received his Ph.D. in Virology from Duke University.

Brian H. Dovey has been a Director of the Company since its inception. Mr. Dovey
has been a  general  partner  of  Domain  Associates,  a  venture  capital  firm
specializing in investments in life sciences, since 1988. Mr. Dovey is President
of the National  Venture  Capital  Association  and is a member of the Boards of
Trustees of the Coriell  Institute and the University of Pennsylvania  School of
Nursing.   Mr.  Dovey  is  Chairman  of  the  Board  of  Directors  of  Creative
BioMolecules   and  also  serves  on  the  Boards  of   Directors  of  Connetics
Corporation, Geron Corporation, NABI and Vivus, Inc.

Charles A. Sanders,  M.D. has been a Director of the Company since October 1996.
From 1989 to May 1995,  Dr.  Sanders was Chairman of the Board of Directors  and
Chief Executive Officer of Glaxo and a member of the Board of Directors of Glaxo
plc.  Prior to joining  Glaxo,  Dr. Sanders held a number of positions at Squibb
Corporation,  a  multinational   pharmaceutical   corporation,   including  Vice
Chairman,  Chief  Executive  Officer of the  Science  and  Technology  Group and
Chairman of the Science  and  Technology  Committee  of the Board.  Dr.  Sanders
serves  on  the  Boards  of  Directors  of  Magainin   Pharmaceuticals,   Vertex
Pharmaceuticals  and Staff Mark,  Inc. Dr. Sanders  received an M.D. degree from
Southwestern Medical College of the University of Texas.

The  information  required  by Item 10 as to the filings of Forms 3, 4, and 5 as
required by Section 16(a) of the Securities Exchange Act of 1994 is incorporated
by reference from the Company's  Proxy Statement to be filed by the Company with
the  Securities  and  Exchange  Commission  within 120 days after the end of the
fiscal year.

Item 11.   Executive Compensation

     The  information  required by Item 11 is incorporated by reference from the
Company's  Proxy  Statement to be filed by the Company with the  Securities  and
Exchange Commission within 120 days after the end of the fiscal year.

Item 12.   Security Ownership of Certain Beneficial Owners and Management

     The  information  required by Item 12 is incorporated by reference from the
Company's  Proxy  Statement to be filed by the Company with the  Securities  and
Exchange Commission within 120 days after the end of the fiscal year.

Item 13.   Certain Relationships and Related Transactions

         The  information  required by Item 13 is incorporated by reference from
the Company's  Proxy to be filed by the Company with the Securities and Exchange
Commission within 120 days after the end of the fiscal year.


                                       32
<PAGE>


                                     PART IV


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

     The following documents are filed as part of this report:

<TABLE>
<CAPTION>
                                                                                     Page Number
                                                                                     -----------
(a) 1. Financial Statements
<S>                                                                                      <C>
       Independent Auditors' Report .................................................... F-1
       Balance Sheets as of  December 31, 1996 and 1997 ................................ F-2
       Statements of Operations for the Years Ended December 31,
         1995,  1996 and 1997 and for the period from Inception to December 31, 1997.... F-3
       Statements of Stockholders' Equity (Deficit) for the Years Ended
         December 31, 1993, 1994, 1995, 1996 and 1997................................... F-4
       Statements of Cash Flows for the Years Ended December 31,
         1995, 1996 and 1997 and for the period from Inception to December 31, 1997..... F-5
       Notes to Financial Statements.................................................... F-6
</TABLE>

(a)2.  Financial Statement Schedules

     All financial statement schedules required under Regulation S-X are omitted
as the required information is not applicable.


(a)3.  Exhibits

     The  Exhibits  filed as part of this  Form 10-K are  listed on the  Exhibit
Index immediately preceding such Exhibits and are incorporated by reference.


(b)    Reports on Form 8-K

       None.




                                       33
<PAGE>


                                   SIGNATURES

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.

                                              Trimeris, Inc.
                                              (Registrant)


March  30, 1998                               /s/  M. ROSS JOHNSON
                                              --------------------
                                              M. Ross Johnson
                                              President, Chief Executive Officer
                                              and Chief Scientific Officer

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


<TABLE>
<CAPTION>
     Signature                                 Capacity                                   Date
     ---------                                 --------                                   ----

<S>                                      <C>                                          <C> 
/s/  M. ROSS JOHNSON                     President (principal executive               March 30 , 1998
- ----------------------------             officer), Chief Executive Officer             
     M. Ross Johnson                     Chief Scientific Officer and Director 


/s/  MATTHEW A. MEGARO                   Chief Operating Officer, Chief Financial     March  30, 1998
- ----------------------------             Officer, Executive Vice President and
     Matthew A. Megaro                   Secretary (principal accounting officer and 
                                         principal financial officer)                


/s/  JESSE I. TREU.                      Chairman of the Board of Directors           March  30, 1998
- ----------------------------                                                          
     Jesse I. Treu, Ph.D.


/s/ DANI P. BOLOGNESI                    Director                                     March 30, 1998
- ----------------------------                                                          
    Dani P. Bolognesi, Ph.D.


/s/ BRIAN H. DOVEY                       Director                                     March 30, 1998
- ----------------------------                                                           
    Brian H. Dovey

/s/ CHARLES A. SANDERS                   Director                                     March 30, 1998
- ----------------------------                                                           
    Charles A. Sanders, M.D.
</TABLE>


                                       34
<PAGE>


                                  EXHIBIT INDEX


(a)   Exhibits
<TABLE>
<S>           <C>
     1.1*     Form of Underwriting Agreement
     3.1*     Second Restated Certificate of Incorporation of the Registrant.
     3.2*     Form of Third Amended and Restated Certificate of Incorporation of the Registrant (to be
                 filed with the Secretary of  State of Delaware upon the completion of the Offering).
     3.3*     Bylaws of the Registrant.
     3.4*     Form of Amended and Restated Bylaws of the Registrant (to be adopted upon the
                 completion of the Offering).
     4.1*     Specimen certificate for shares of Common Stock.
     4.2*     Description of Capital Stock (contained in the Third Amended and Restated  Certificate of  
                 Incorporation of the Corporation of the Registrant, filed as Exhibit 3.2).
     5.1*     Opinion  of  Hutchison  & Mason  PLLC with  respect  to the legality of the shares being 
                 registered.
     10.1*    License Agreement dated February 3, 1993, between the Registrant and Duke University.  
     10.2 *   Sublease Agreement dated November 19, 1993, by and among the Registrant, Sphinx
                 Pharmaceutical Corporation and University Place Associates and as amended by the 
                 Lease  Amendment  dated August 15, 1994, and Second Agreement of Sublease dated 
                 January 16, 1995.
     10.3*    Cooperation and Strategic  Alliance  Agreement dated April 21, 1997, between the Registrant 
                 and MiniMed Inc.
     10.4*    Trimeris, Inc. Amended and Restated Stock Incentive Plan.
     10.5*    Trimeris, Inc. Employee Stock Purchase Plan.
     10.6*    Form of Promissory Notes executed by certain executive officers in favor of the Registrant, 
                 and related collateral documents.
     10.7*    Form of Stock Restriction Agreements between the Registrant and certain executive officers.
     10.8*    Form of Stock Pledge  Agreement  between the  Registrant and certain executive  officers.  
     10.9 *   Employment  Offer Letter with M. Ross Johnson dated  December 15, 1994.  
     10.10*   Employment  Offer Letter with Matthew A. Megaro  dated  February  23,  1995.
     10.11 *  Sixth Amended  and  Restated Registration Rights Agreement dated
              June 27, 1997, by and among the Registrant and certain
              stockholders of the Registrant.
     10.12 *  Agreement with Max N. Wallace dated July 10, 1997.
     10.13 *  Form of Indemnification Agreements.
     10.14 *  License Agreement dated September 9, 1997 between the Registrant and The New York Blood Center.
     11.1     Computation of Basic Net Loss Per Share.
     27       Financial Data Schedule
</TABLE>

- ----------------
*    Previously filed with Form S-1 on October 7, 1997.

All financial  statement schedules have been omitted because either they are not
required,  are not applicable,  or the information is otherwise set forth in the
Financial Statements and Notes thereto.



                                       35




             Exhibit 11.1 Computations of Basic Net Loss Per Share.

                                 Trimeris, Inc.

             STATEMENTS RE: COMPUTATIONS OF BASIC NET LOSS PER SHARE
                  (amounts in thousands except per share data)


<TABLE>
<CAPTION>
                                                                     Year ended December 31,
                                                                --------------------------------
                                                                  1995        1996        1997
                                                                --------    --------    --------
<S>                                                             <C>         <C>         <C>      
Common shares outstanding (weighted average) ............         2,541       4,605       7,295
Common stock equivalents                                     
   (using the treasury stock method):                        
   Stock Options and Awards (weighted average)               
   Pursuant to Staff Accounting Bulletin No. 83(A) ......           100         100         100
                                                                ========    ========    ========
Total ...................................................          2,641       4,705       7,395
                                                                ========    ========    ========
Net loss ................................................       $ (5,739)   $ (6,972)   $(11,428)
                                                                ========    ========    ========
Basic net loss per common share .........................       $  (2.17)   $  (1.48)   $  (1.55)
                                                                ========    ========    ========
</TABLE>

(A)  Treated as if outstanding for all periods presented.




                                       36



<PAGE>

                          INDEPENDENT AUDITORS' REPORT


The Board of Directors and Stockholders
Trimeris, Inc.:

We have audited the accompanying balance sheets of Trimeris, Inc. (A Development
Stage Company) (the "Company") as of December 31, 1996 and 1997, and the related
statements of operations,  stockholders'  equity  (deficit),  and cash flows for
each of the years in the  three-year  period ended December 31, 1997 and for the
cumulative  period  from the date of  inception  to  December  31,  1997.  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 the Company as of December 31,
1996 and 1997,  and the results of its operations and its cash flows for each of
the  years  in the  three-year  period  ended  December  31,  1997,  and for the
cumulative period from the date of inception to December 31, 1997, in conformity
with generally accepted accounting principles.

January 30, 1998                                   KPMG PEAT MARWICK LLP

Raleigh, North Carolina




                                      F-1
<PAGE>



                                 TRIMERIS, INC.
                          (A Development Stage Company)

                                 BALANCE SHEETS
                                 (in thousands)

<TABLE>
<CAPTION>
                                                                                          As of December 31,
                                                                                        ---------------------
                                                                                          1996        1997
                                                                                        ---------   ---------
<S>                                                                                     <C>         <C>     
Assets
Current assets:
     Cash and cash equivalents ......................................................   $    132    $ 32,557
     Short-term investments .........................................................         --       4,863
     Accounts receivable ............................................................         33         101
     Loans to employees .............................................................          3          --
     Prepaid expenses ...............................................................         45           6
                                                                                        --------    --------
       Total current assets .........................................................        213      37,527
                                                                                        --------    --------
Property, furniture and equipment, net of accumulated
     depreciation of $1,612 and $2,169 at December 31, 1996 and 1997, respectively ..        897         756
                                                                                        --------    --------
Other assets:
    Equipment held for resale, less allowance of  $54 at December 31, 1996 ..........         54          --
    Exclusive license agreement, net of accumulated amortization of $9 and $11 at
          December 31, 1996 and 1997,  respectively .................................         32          30
    Patent costs, net of accumulated amortization of $2 and $6 at December 31, 1996
    and 1997, respectively ..........................................................        413         442
Equipment deposits ..................................................................         59          86
    Other assets, net of accumulated amortization of $15 and $18
         at December 31, 1996 and 1997,  respectively ...............................         16           3
                                                                                        --------    --------
           Total other assets .......................................................        574         561
                                                                                        --------    --------
           Total assets .............................................................   $  1,684    $ 38,844
                                                                                        --------    --------
Liabilities and Stockholders' Equity (Deficit)
Current liabilities:
   Accounts payable .................................................................   $    255    $    722
   Current installments of obligations under capital leases .........................        500         259
   Accrued compensation .............................................................        329         608
   Accrued expenses .................................................................        434       1,205
                                                                                        --------    --------
           Total current liabilities ................................................      1,518       2,794
Notes payable .......................................................................        259          --
Obligations under capital leases, excluding current installments ....................        316         240
                                                                                        --------    --------
           Total liabilities ........................................................      2,093       3,034
                                                                                        --------    --------
Stockholders' equity (deficit):
   Preferred Stock at $0.001 par value per share 62,667 shares authorized; issued and
     outstanding 33,469 and zero shares at December 31,1996 and 1997,  respectively..         33          --

Common Stock at $0.001 par value per share. Authorized 80,000 shares; issued
   and outstanding 437 and 10,549 shares at December 31, 1996 and
   1997,  respectively ..............................................................          1          11
   Additional paid-in capital .......................................................     17,536      67,360
   Deficit accumulated during the development stage .................................    (17,965)    (29,393)
   Deferred compensation ............................................................         --      (1,950)
   Notes receivable from stockholders ...............................................        (14)       (218)
                                                                                        --------    --------
           Total stockholders' equity (deficit) .....................................       (409)     35,810
                                                                                        --------    --------
Commitments and contingencies (notes 2, and 9)
           Total liabilities and stockholders' equity (deficit) .....................   $  1,684    $ 38,844
                                                                                        ========    ========
</TABLE>


                 See accompanying notes to financial statements.


                                      F-2

<PAGE>


                                 TRIMERIS, INC.
                          (A Development Stage Company)

                            STATEMENTS OF OPERATIONS
                      (in thousands, except per share data)


<TABLE>
<CAPTION>
                                                                                                          Cumulative  
                                                                                                        from Inception
                                                                                                          (January 7, 
                                                                      For the Years Ended December 31,     1993) to  
                                                                 -------------------------------------    December 31,
                                                                   1995         1996          1997           1997    
                                                                 -------       -------      --------       --------
<S>                                                              <C>           <C>          <C>            <C>     
Revenue ..............................................           $   104       $    55      $    431       $    590
                                                                 -------       -------      --------       --------
    Operating expenses:
    Research and development .........................             4,012         5,146         9,734         22,330
    General and administrative .......................             1,520         1,761         2,596          7,456
                                                                 -------       -------      --------       --------
        Total operating expenses .....................             5,532         6,907        12,330         29,786
                                                                 -------       -------      --------       --------
    Operating loss ...................................            (5,428)       (6,852)      (11,899)       (29,196)
                                                                 -------       -------      --------       --------
        Other income (expense):
        Interest income ..............................                49            47           584            706
        Interest expense .............................              (360)         (167)         (113)          (903)
                                                                 -------       -------      --------       --------
                                                                    (311)         (120)          471           (197)
                                                                 -------       -------      --------       --------
     Net loss ........................................           $(5,739)      $(6,972)     $(11,428)      $(29,393)
                                                                 =======       =======      ========       ========
 Basic net loss per share ............................           $ (2.17)      $ (1.48)     $  (1.55)
                                                                 =======       =======      ========
   Weighted average shares used
     in per share computations .......................             2,641         4,705         7,395
                                                                 =======       =======      ========
</TABLE>


                 See accompanying notes to financial statements.

                                       F-3
<PAGE>

                                 TRIMERIS, INC.
                          (A Development Stage Company)

                   STATEMENT OF STOCKHOLDERS' EQUITY (DEFICIT)
            Years Ended December 31, 1993, 1994, 1995, 1996 and 1997
                                 (in thousands)

<TABLE>
<CAPTION>
                                           Preferred Stock           Common Stock                    Deficit               
                                         -------------------     --------------------              accumulated             
                                                                                       Additional   during the             
                                         Number of      Par      Number of      Par     paid-in    development   Deferred  
                                          shares       value      Shares       value    capital       stage    compensation
                                         --------    --------    --------    --------  ----------  ----------- ------------
<S>                                       <C>        <C>             <C>     <C>        <C>         <C>         <C>        
Balance at January 7, 1993 ...........         --    $     --          --    $     --   $     --    $     --    $     --   
Issuances of Common Stock ............         --          --         218          --          2          --          --   
Issuances of Series A Preferred  Stock      3,000           3          --          --      1,997          --          --   
Stock issuance costs .................         --          --          --          --        (34)         --          --   
Common Stock issued in exchange  for
   exclusive license .................         --          --          96          --         41          --          --   
Common Stock issued in exchange
   for  consulting  services .........         --          --           6          --          2          --          --   
Loss for the period ..................         --          --          --          --         --      (1,311)         --   
                                         --------    --------    --------    --------   --------    --------    --------   
Balance as of December 31, 1993 ......      3,000           3         320          --      2,008      (1,311)         --   
Issuances of Common  Stock ...........         --          --          12          --          5          --          --   
Common Stock issued in exchange
   for consulting  services ..........         --          --           5          --          2          --          --   
Loss for the period ..................         --          --          --          --         --      (3,943)         --   
                                         --------    --------    --------    --------   --------    --------    --------   
Balance as of December 31, 1994 ......      3,000           3         337          --      2,015      (5,254)         --   
Issuances of Common Stock ............         --          --          16          --          8          --          --   
Issuances of Series B Preferred Stock      20,636          21          --          --     10,297          --          --   
Stock issuance costs .................         --          --          --          --        (27)         --          --   
Loss for the period ..................         --          --          --          --         --      (5,739)         --   
                                         --------    --------    --------    --------   --------    --------    --------   
Balance as of December 31,1995 .......     23,636          24         353          --     12,293     (10,993)         --   
Issuances of Common Stock ............         --          --          84           1         28          --          --   
Issuances of Series B Preferred Stock       6,500           6          --          --      3,244          --          --   
Issuances of Series C Preferred Stock       3,333           3          --          --      1,997          --          --   
Stock issuance costs .................         --          --          --          --        (26)         --          --   
Loss for the period ..................         --          --          --          --         --      (6,972)         --   
Notes receivable from stockholders
    for the purchase of shares .......         --          --          --          --         --          --          --   
                                         --------    --------    --------    --------   --------    --------    --------   
Balance as of December 31, 1996 ......     33,469          33         437           1     17,536     (17,965)         --   
Issuances of Series C Preferred Stock       9,984          10          --          --      5,981          --          --   
Issuances of Series D Preferred Stock       9,048           9          --          --      6,777          --          --   
Issuances of Common Stock ............         --          --         656           1        255          --          --   
Conversion of Preferred Stock to
    Common Stock .....................    (52,501)        (52)      6,262           6         46          --          --   
Issuance of shares in initial public
    offering, net ....................         --          --       3,163           3     34,529          --          --   
Exercise of stock options ............         --          --          32          --          9          --          --   
Repayment of notes receivable from
    Stockholders .....................         --          --          --          --         --          --          --
Repurchase of Common Stock ...........         --          --          (1)         --         --          --          --   
Stock issuance costs .................         --          --          --          --       (109)         --          --   
Issuances of Common Stock and
    options at below market value ....         --          --          --          --      2,336          --      (2,336)  
Amortization of deferred
    compensation .....................         --          --          --          --         --          --         386   
Loss for the period ..................         --          --          --          --         --     (11,428)         --   
                                         ========    ========    ========    ========   ========    ========    ========   
Balance as of December 31, 1997 ......         --    $     --      10,549    $     11   $ 67,360    $(29,393)   $ (1,950)  
                                         ========    ========    ========    ========   ========    ========    ========   

<CAPTION>                             
                                                                         
                                                Notes          Net         
                                              receivable   Stockholders  
                                                from          Equity       
                                             stockholders    (Deficit)     
                                             ------------  ------------  
<S>                                          <C>             <C>             
Balance at January 7, 1993 ...........       $     --        $     --        
Issuances of Common Stock ............             --               2        
Issuances of Series A Preferred  Stock             --           2,000
Stock issuance costs .................             --             (34)
Common Stock issued in exchange  for
   exclusive license .................             --              41
Common Stock issued in exchange
   for  consulting  services .........             --               2
Loss for the period ..................             --          (1,311)
                                             --------        --------
Balance as of December 31, 1993 ......             --             700
Issuances of Common  Stock ...........             --               5
Common Stock issued in exchange
   for consulting  services ..........             --               2
Loss for the period ..................             --          (3,943)
                                             --------        --------
Balance as of December 31, 1994 ......             --          (3,236)
Issuances of Common Stock ............             --               8
Issuances of Series B Preferred Stock              --          10,318
Stock issuance costs .................             --             (27)
Loss for the period ..................             --          (5,739)
                                             --------        --------
Balance as of December 31,1995 .......             --           1,324
Issuances of Common Stock ............             --              29
Issuances of Series B Preferred Stock              --           3,250
Issuances of Series C Preferred Stock              --           2,000
Stock issuance costs .................             --             (26)
Loss for the period ..................             --          (6,972)
Notes receivable from stockholders
    for the purchase of shares .......            (14)            (14)
                                             --------        --------
Balance as of December 31, 1996 ......            (14)           (409)
Issuances of Series C Preferred Stock              --           5,991
Issuances of Series D Preferred Stock              --           6,786
Issuances of Common Stock ............           (254)              2
Conversion of Preferred Stock to
    Common Stock .....................             --              --
Issuance of shares in initial public
    offering, net ....................             --          34,532
Exercise of stock options ............             --               9
Repayment of notes receivable from
    Stockholders .....................             50              50
Repurchase of Common Stock ...........             --              --
Stock issuance costs .................             --            (109)
Issuances of Common Stock and
    options at below market value ....             --              --
Amortization of deferred
    compensation .....................             --             386
Loss for the period ..................             --         (11,428)
                                             ========        ========
Balance as of December 31, 1997 ......       $   (218)       $ 35,810        
                                             ========        ========        
</TABLE>                                                   
                                                           
                 See accompanying notes to financial statements.
                                                           
                                                           
                                                       
                                      F-4
<PAGE>


                                 TRIMERIS, INC.
                          (A Development Stage Company)

                            STATEMENTS OF CASH FLOWS
                                 (in thousands)


<TABLE>
<CAPTION>
                                                                          For the years ended December 31,            
                                                                        -----------------------------------      Cumulative from 
                                                                                                                   Inception 
                                                                                                               (January 7, 1993) to
                                                                          1995         1996          1997        December 31, 1997 
                                                                        --------     --------      --------     -------------------
<S>                                                                     <C>          <C>           <C>             <C>      
Cash flows from operating activities:
       Net loss ....................................................    $ (5,739)    $ (6,972)     $(11,428)       $(29,393)
       Adjustments to reconcile net loss to net cash used
           by operating activities:
           Depreciation and amortization of  property,
                furniture and equipment ............................         544          690           558           2,189
           Amortization of deferred compensation ...................          --           --           386             386
           Other amortization ......................................           7            9            11              37
           Provision for equipment held for resale .................          --           --            --              61
           Stock issued for consulting services ....................          --           --            --               5
           Stock issued to repay interest on  notes to
                stockholders .......................................         195           --            --             195
           Debt issued for research and development ................          --          194            --             194
         Decrease (increase) in assets:
           Loss on disposal of property and equipment ..............          --           --            --              16
           Accounts receivable and loans to employees ..............           7          (35)          (65)           (101)
           Prepaid expenses ........................................          (4)         (36)           39              (6)
           Other assets ............................................         (16)          --           (18)            (87)
           Increase (decrease) in liabilities:
           Accounts payable ........................................         (21)         137           467             722
           Accrued compensation ....................................          --          329           279             608
           Accrued expenses ........................................         271         (145)          771           1,115
                                                                        --------     --------      --------        --------
           Net cash used by operating activities ...................      (4,756)      (5,829)       (9,000)        (24,059)
                                                                        --------     --------      --------        --------

 Cash flows from investing activities:
       Purchase of property and equipment ..........................         (97)         (27)         (205)           (635)
       Purchase of short-term investments ..........................          --           --        (4,863)         (4,863)
       Equipment held for resale ...................................          --            7            54             (61)
       Organizational costs ........................................          --           --            --              (8)
       Patent costs ................................................        (214)        (116)          (34)           (449)
                                                                        --------     --------      --------        --------
           Net cash used in investing activities ...................        (311)        (136)       (5,048)         (6,016)
                                                                        --------     --------      --------        --------

 Cash flows from financing activities:
       Proceeds from issuance of notes payable .....................       2,717           92          (259)          6,150
       Lease costs .................................................          --           --            --             (13)
       Principal payments under capital lease
           obligations .............................................        (433)        (577)         (529)         (1,827)
       Proceeds from issuance of Common Stock ......................           8           15             2              31
       Proceeds from issuance of Preferred Stock ...................       3,869        5,250        12,777          23,896
       Proceeds from initial public offering, net ..................          --           --        34,532          34,532
       Proceeds from exercise of stock options .....................          --           --             9               9
       Repayment of notes receivable from  stockholders ............          --           --            50              50
       Stock issuance costs ........................................         (27)         (26)         (109)           (196)
                                                                        --------     --------      --------        --------
       Net cash provided by financing activities ...................       6,134        4,754        46,473          62,632
                                                                        --------     --------      --------        --------

       Net increase (decrease) in cash and cash
           equivalents .............................................       1,067       (1,211)       32,425          32,557

Cash and cash equivalents at beginning of  period ..................         276        1,343           132              --
                                                                        --------     --------      --------        --------

Cash and cash equivalents at end of  period ........................    $  1,343     $    132      $ 32,557        $ 32,557
                                                                        ========     ========      ========        ========
Supplemental disclosure of cash flow
       information:
Cash paid during the period for interest ...........................    $    179     $    154      $    126        $    817
                                                                        ========     ========      ========        ========
</TABLE>

   Supplemental disclosures of noncash investing and financing activities are
                              described in Note 8.
                                                                         
                See accompanying notes to financial statements.



                                      F-5
<PAGE>

<PAGE>


                                 TRIMERIS, INC.
                          (A Development Stage Company)

                          NOTES TO FINANCIAL STATEMENTS

1.   Organization and Summary of Significant Accounting Policies

     Organization

     Trimeris,  Inc. was incorporated on January 7, 1993 to discover and develop
novel  therapeutic  agents that block viral infection by inhibiting viral fusion
with host cells. The financial  statements have been prepared in accordance with
Statement of Financial  Accounting Standards No. 7, "Accounting and Reporting by
Development  Stage  Enterprises,"  to  recognize  the fact that the  Company  is
devoting  substantially  all of its efforts to  establishing  a new business and
planned principal operations have not commenced.

     Cash and Cash Equivalents

     The Company  considers all highly liquid debt  instruments with an original
maturity of three months or less to be cash  equivalents.  Cash  equivalents are
stated at cost and consist  primarily of overnight  commercial  paper,  variable
rate demand  notes,  commercial  paper,  and  short-term  debt  securities.  The
carrying amount of cash and cash equivalents approximates fair value.

     Short-Term Investments

     Short-term   investments,   which  consist  of  short-term  corporate  debt
securities, are reported at fair value, and are classified as available-for-sale
securities.  The  cost of  securities  sold is  determined  using  the  specific
identification  method when computing  realized gains and losses.  Fair value is
determined  using  available  market  information.  At December 31,  1997,  cost
approximated  the fair value of short-term  investments.  There were no realized
gains or losses on investments sold during 1995, 1996 or 1997.

     Concentration of Credit and Market Risk and off Balance Sheet Risk

     The Company  invests its excess cash  primarily  in  short-term  marketable
securities,  and, in accordance with its investment policy, limits the amount of
credit  exposure  with any one  issuer.  These  investments  are  generally  not
collateralized  and  typically  mature  within one year.  There were no realized
gains or losses on these investments during 1995, 1996 or 1997.

     Property, Furniture and Equipment

     Property, furniture and equipment are recorded at cost. Property, furniture
and equipment  under capital leases are initially  recorded at the present value
of minimum lease payments at the inception of the lease.

     Depreciation  is  calculated  using  the  straight-line   method  over  the
estimated  useful lives of the assets.  Property,  furniture and equipment  held
under capital leases and leasehold improvements are amortized using the straight
line  method over the lesser of the lease term or  estimated  useful life of the
asset.

     Intangible Assets

     The recoverability of the carrying values of intangible assets is evaluated
on an ongoing basis, primarily by comparing the estimated  profitability related
to the asset  compared to its  carrying  value.  Provision  against the carrying
value of the asset is recorded when impairment is identified.


                                      F-6
<PAGE>

                                 TRIMERIS, INC.
                          (A Development Stage Company)

                    NOTES TO FINANCIAL STATEMENTS - Continued

     Organization  costs are amortized using the straight-line  method over five
years. The exclusive  license is amortized using the  straight-line  method over
seventeen  years.  The costs of patents are  capitalized and are amortized using
the  straight-line  method over the remaining lives of the patents from the date
the patents are granted.  Financing costs were incurred as part of the Company's
capital lease agreements and are amortized straight-line over the lease term.


     Research and Development

          Research and development costs are charged to operations as incurred.

     Income Taxes

          The Company  uses the asset and  liability  method of  accounting  for
     income taxes.

     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  and the  reported  amounts  of  revenues  and  expenses  during  the
reporting period. Actual results could differ from those estimates.

     Net Loss Per Share

     For the year ended  December  31, 1997,  the Company  adopted SFAS No. 128,
"Earnings  Per Share"  ("SFAS No.  128").  In  accordance  with this  statement,
primary net loss per common  share is replaced  with basic loss per common share
which is  calculated  by  dividing  net loss by the  weighted-average  number of
common shares  outstanding for the period after certain,  adjustments  described
below.  Fully  diluted net income per common share is replaced  with diluted net
income per common share  reflecting the maximum  dilutive effect of common stock
issuable upon  exercise of stock  options,  stock  warrants,  and  conversion of
preferred  stock.  Diluted  net loss per common  share is not  shown,  as common
equivalent  shares  from  stock  options,  and  stock  warrants,  would  have an
antidilutive  effect.  Prior period per share data has been  restated to reflect
the  adoption  of SFAS No. 128.  In  accordance  with  Securities  and  Exchange
Commission  Staff  Accounting  Bulletin No. 83 ("SAB 83"), all common shares and
common  equivalent  shares  issued during the  twelve-month  period prior to the
initial filing of the registration  statement  relating to the Company's initial
public offering, even when anti-dilutive,  have been included in the calculation
as if they were  outstanding  for all periods,  using the treasury stock method.
The basic net loss per common share gives  retroactive  effect to the conversion
of all  outstanding  shares of Preferred  Stock into 6,261,615  shares of Common
Stock upon the completion of the Company's initial public offering.

The following is a  reconciliation  of the weighted  average  shares used in the
computation of basic earnings per share (in thousands):

                                                      1995       1996       1997
                                                     -----      -----      -----
Weighted average common shares ................      2,541      4,605      7,295

Common equivalent shares under SAB 83 .........        100        100        100
                                                     -----      -----      -----
                                                     2,641      4,705      7,395
                                                     =====      =====      =====


                                      F-7
<PAGE>


                                 TRIMERIS, INC.
                          (A Development Stage Company)

                     NOTES TO FINANCIAL STATEMENTS-Continued

     Stock-Based Compensation

     Statement  of  Financial  Accounting  Standards  No. 123,  "Accounting  for
Stock-Based  Compensation," encourages, but does not require companies to record
compensation cost for stock-based employee compensation plans at fair value. The
Company has chosen to continue to account for stock-based compensation using the
method prescribed in Accounting Principles Board Opinion No. 25, "Accounting for
Stock  Issued  to   Employees,"   and  related   Interpretations.   Accordingly,
compensation  cost for stock  options is measured as the excess,  if any, of the
quoted  market  price of the  Company's  stock at the date of the grant over the
amount an employee must pay to acquire the stock.

     Stock Split

     Effective July 11, 1997, the Company  declared a one for eight and one-half
reverse  stock  split  for  common  stockholders.  This  stock  split  has  been
retroactively  applied  and  all  periods  presented  have  been  restated.  The
conversion  prices for the Preferred  Stock were adjusted for this reverse stock
split.

2.   Leases

     The Company is obligated  under  various  capital  leases for furniture and
equipment  that expire at various  dates  during the next four years.  The gross
amount of furniture and equipment and related accumulated  amortization recorded
under capital  leases and included in property,  furniture and equipment were as
follows at December 31, 1996 and 1997 (in thousands):

                                                          1996             1997
                                                       -------          -------
Furniture and equipment ......................         $ 1,930          $ 2,326

Less accumulated amortization ................          (1,084)          (1,655)
                                                       -------          -------

                                                       $   846          $   671
                                                       =======          =======

     The Company also has several non-cancelable operating leases, primarily for
office space and office  equipment,  that extend through  September 1999. Rental
expense,  including  maintenance charges, for operating leases during 1995, 1996
and 1997 was $532,000, $552,000, and $612,000 respectively.




                                      F-8
<PAGE>


                                 TRIMERIS, INC.
                          (A Development Stage Company)

                    NOTES TO FINANCIAL STATEMENTS - Continued

     Future minimum lease payments under  non-cancelable  operating leases (with
initial  or  remaining  lease  terms in excess of one year) and  future  minimum
capital lease payments as of December 31, 1997 (in thousands) are:

<TABLE>
<CAPTION>
                                                                   CAPITAL                  OPERATING 
                                                                   LEASES                    LEASES
                                                                 ----------                ------------
<S>                                                                  <C>                         <C> 
Year ending December 31:
   1998 ..........................................................   $312                        $521
   1999 ..........................................................    189                         419
   2000 ..........................................................     78                          --
   2001 ..........................................................     10                          --
                                                                     ----                        ----
Total minimum lease payments .....................................    589                        $940
                                                                                                 ====
                                                                                                
Less amount representing interest ................................     90                       
                                                                     ----                       
                                                                                                
Present value of net minimum capital lease payments ..............    499                       
Less current installments of obligations under capital leases ....    259                       
                                                                     ----                       
                                                                                                
Obligations under capital leases,  excluding current                                            
    installments .................................................   $240                       
                                                                     ====                       
</TABLE>

     Additionally,  under a  warrant  agreement  dated  August  24,  1993 with a
lessor,  the Company issued  warrants to acquire Series B Preferred Stock at the
initial  Series B  Preferred  Stock  per  share  offering  price,  such that the
aggregate  purchase price for the shares equals $119,000.  The warrants shall be
exercisable  prior to the earlier of the tenth  annual  anniversary  date of the
grant date or fifth anniversary date of Trimeris'  Initial Public Offering.  The
shares have not been issued as of December 31, 1997.

     During the year ended December 31, 1995, the lease with the  aforementioned
lessor was amended to increase the credit limit by $750,000 to $2.0 million.  As
part of this  amendment,  Trimeris  granted  the lessor  additional  warrants to
purchase shares valued at $71,000 of Series B Preferred Stock at the initial per
share offering price.

3.   Notes Payable

     In March 1995, the Company  entered into a Financial  Assistance  Agreement
with  the  North  Carolina  Biotechnology  Center  (the  "Center").  Under  this
agreement,  the  Center  agreed to extend to the  Company a line of credit up to
$250,000 for the funding of certain research performed by the Company.

     This note payable is unsecured and bears interest at 8.5% on the balance of
all  outstanding  principal.  The note  matures  in March  2000,  at which  time
principal and accrued  interest is to be repaid.  At December 31, 1996 the total
principal and interest due was $263,000.

     In  November  1995,  the  Company  entered  into  a  Collaborative  Funding
Assistance Agreement with the Center. Under this agreement, the Center agreed to
lend the Company up to $10,000 for the funding of certain research  performed by
the Company.  This note payable is unsecured and bears  interest at 8.75% on the
balance of all  outstanding  principal.  The note matures in December  2000,  at
which time principal and accrued interest is to be repaid.  At December 31, 1996
the total principal due was $9,000.

     These notes were paid in full during 1997 in connection  with the Company's
initial public offering.


                                      F-9
<PAGE>

                                 TRIMERIS, INC.
                          (A Development Stage Company)

                    NOTES TO FINANCIAL STATEMENTS - Continued

4.   Stockholders' Equity (Deficit)

     In connection  with the Company's  initial public  offering,  the Company's
Certificate of Incorporation  was restated to grant the Company the authority to
issue  40,000,000  shares of stock  consisting  of  30,000,000  shares of Common
Stock, par value $0.001 per share, and 10,000,000 shares of Preferred Stock, par
value $0.001 per share.

     At December 31, 1996 and 1997,  loans with an interest  rate of 8% totaling
$14,000 and $218,000, respectively, were outstanding to employees of the Company
for  purchase  of shares of the  Company's  Common  Stock.  This amount has been
presented as contra-equity in the statement of stockholders' equity (deficit).

     Initial Public Offering

     In October 1997, the Company  closed its initial public  offering of common
stock at $12 per share. The net proceeds of the offering were $34,532,000  after
deducting applicable costs and expenses. In connection with the public offering,
all outstanding  shares of Preferred Stock were converted into 6,261,615  shares
of Common Stock.

     Preferred Stock

     Prior  to the  conversion  of the  Preferred  Stock  into  Common  Stock in
connection with the initial public offering,  Preferred Stockholders had certain
rights regarding dividends,  liquidation preferences,  conversion rights, voting
rights,  and  restrictions  on  future  debt or equity  issuances.  The Board of
Directors has the authority to issue future shares of Preferred Stock and to fix
the rights, preferences, privileges and restrictions thereof, including dividend
rights,  conversion rights, voting rights, terms of redemption,  and liquidation
preferences, without any further vote or action by the stockholders.

     Equity Financing

     An initial  investment  of $2 million was  provided by Domain  Partners II,
L.P.  ("Domain")  and  Biotechnology  Investments  Limited  ("BIL")  to fund the
start-up phase of the Company.

     During the year ended December 31, 1995, Domain, BIL and others invested an
additional $3.9 million to fund continued  operations of the Company through the
purchase  of  shares of Series B  Preferred  Stock.  In  addition,  the  Company
exchanged notes payable,  including accrued interest, of $6.4 million for shares
of Series B Preferred Stock. These notes were payable to Domain and BIL and were
entered  into during the years  ended  December  31,  1994 and 1995.  A total of
20,635,564 shares were issued for a total consideration of $10.3 million.

     In March and October 1996 and April, 1997, Domain, BIL, and others invested
an additional $11.3 million to fund continued  operations of the Company through
the purchase of Series B Preferred Stock and Series C Preferred  Stock. In June,
1997,  various other  investors  invested  $6.8 million  through the purchase of
Series D Preferred Stock.

     Common stock was issued during 1994, 1995, and 1996 through the purchase by
Company personnel and through the exercise of stock options.



                                      F-10
<PAGE>


                                 TRIMERIS, INC.
                          (A Development Stage Company)

                    NOTES TO FINANCIAL STATEMENTS - Continued

5.   Stock Option Plan

     In 1993,  the  Company  adopted a stock  option  plan which  allows for the
issuance  of  non-qualified  and  incentive  stock  options.  During  1996,  the
Trimeris,  Inc. New Stock Option Plan (the "Stock Option Plan") was  implemented
that replaced the 1993 plan.  Under the Stock Option Plan, the Company may grant
non-qualified  or  incentive  stock  options for up to 852,941  shares of Common
Stock.  The exercise price of each incentive stock option shall not be less than
the fair market value of the Company's  Common Stock on the date of grant and an
option's  maximum term is ten years.  Outstanding  incentive  stock options have
been issued at prices ranging from $.34 to $12.56 per share.  The vesting period
occurs  ratably over four years.  All  incentive  stock  options  which had been
granted under the 1993 plan were cancelled at inception of the Stock Option Plan
while the non-qualified stock options remain outstanding at an exercise price of
$.43.  No more  grants will be made under the 1993 plan.  At  December  31, 1997
there were approximately 226,000 options remaining available for grant.

Stock option  transactions  for the years ended December 31, 1995, 1996 and 1997
are as follows:

<TABLE>
<CAPTION>
                                   Weighted            Weighted            Weighted
                                    Average             Average             Average
                                   Exercise            Exercise            Exercise
                          1995       Price     1996      Price    1997       Price
                        --------   --------  -------   -------- --------   --------
<S>                      <C>        <C>      <C>        <C>      <C>        <C>
 Options outstanding
     at  January 1 ..    141,000    $0.34    166,000    $0.34    483,000    $0.34
  Granted ...........     38,000     0.34    572,000     0.34    144,000     1.56
  Exercised .........     (5,000)    0.34    (28,000)    0.34   (341,000)    0.34
  Cancelled .........     (8,000)    0.34   (227,000)    0.34    (19,000)    0.34
                        --------    -----   --------    -----   --------    -----

Options outstanding
    at  end of period    166,000    $0.34    483,000    $0.34    267,000    $0.75
                        ========    =====   ========    =====   ========    =====
</TABLE>

The  following  summarizes  information  about stock options  outstanding  as of
December 31, 1997:

<TABLE>
<CAPTION>
                                      Options Outstanding                        Options Exercisable
                        -----------------------------------------------     --------------------------------
                                          Weighted
                                           Average
                           Number         Remaining         Weighted                            Weighted
 Range of Exercise      Outstanding      Contractual        Average           Number            Average
       Price            as of 12/31/97      Life         Exercise Price     Exercisable       Exercise Price
 -----------------      --------------      ----         --------------     -----------       --------------
<S>                      <C>                 <C>           <C>                 <C>               <C>
$          0.34          229,000             8.70          $   0.34            114,000           $   0.34
$          1.00           31,000             9.65          $   1.00              3,000           $   1.00
$  12.00-$12.56            7,000             9.93          $  12.36                 --           $  12.36
                         -------             ----          --------            -------           --------
$   0.34-$12.56          267,000             8.84          $   0.75            117,000           $   0.41
                         =======             ====          ========            =======           ========
</TABLE>

     The Company  applies APB  Opinion  No. 25 and  related  interpretations  in
accounting  for its  plans.  Accordingly,  compensation  cost  related  to stock
options  issued to employees  would be recorded on the date of grant only if the
current market price of the underlying  stock exceeded the exercise  price.  For
the year ended December 31, 1997, the Company has recorded a deferred  charge of
$2,336,000,  representing  the  difference  between the  exercise  price and the
deemed fair value of the  Company's  Common  Stock for 348,000  shares of Common
Stock and 132,000 shares  subject to Common Stock Options  granted in the second
and third  quarters of 1997.  The  deferred  compensation  will be  amortized to
expense over the period the shares and options vest, generally four years.



                                      F-11
<PAGE>


                                 TRIMERIS, INC.
                          (A Development Stage Company)

                    NOTES TO FINANCIAL STATEMENTS -Continued

     SFAS 123,  Accounting for  Stock-Based  Compensation,  permits  entities to
recognize as expense over the vesting  period the fair value of all  stock-based
awards on the date of grant. Alternatively, SFAS No. 123 also allows entities to
continue to apply the provisions of APB Opinion No. 25 and provide pro forma net
income and pro forma  earnings per share  disclosures  for employee stock option
grants  as if the  fair-value-based  method  defined  in SFAS  No.  123 had been
applied.  The Company has  elected to  continue to apply the  provisions  of APB
Opinion No. 25. Had the Company  determined  compensation  expense  based on the
fair value at the grant date for its stock options under SFAS 123, the Company's
net loss and basic  loss per share  would have been  increased  to the pro forma
amounts indicated below for the years ended December 31:

                                                         1996              1997
                                                     --------          --------
Net loss:
As reported ................................         $ (6,972)         $(11,428)

Compensation cost recorded
   under APB 25 ............................               --               386
Additional compensation cost
   resulting from:                                         --                --
      Common Stock Options .................               --              (100)
      Restricted Stock .....................               --              (240)
                                                     --------          --------
Pro forma ..................................         $ (6,972)         $(11,382)

                                                     ========          ========
Basic Loss Per Share:
   As reported .............................         $  (1.48)         $  (1.55)

   Pro forma ...............................         $  (1.48)         $  (1.54)
                                                                        


     The fair value of common stock options and restricted stock is estimated on
the  date of  grant  using  the  Black-Scholes  option-pricing  model  with  the
following assumptions used:


     Estimated dividend yield                                     0.00%
     Expected stock price volatility                              29.00%
     Risk-free interest rate                                      5.07-6.00%
     Expected life of options                                     5-7 years

     The effects of applying SFAS 123 for disclosing  compensation  cost may not
be representative of the effects or reported net income for future years because
pro forma net loss reflects compensation costs only for stock options granted in
1996 and 1997 and does not consider  compensation cost for stock options granted
prior to January 1, 1995.

6.   Income Taxes

     At December  31, 1997,  the Company has net  operating  loss  carryforwards
(NOL's) for federal  income tax purposes of  approximately  $28.3  million which
expire in varying amounts between 2010 and 2013. The Company has NOL's for state
tax purposes of  approximately  $28.3  million  which expire in varying  amounts
between 2000 and 2003.  Additionally,  the Company has research and  development
credits of $339,000 which expire in varying amounts between 2008 and 2011.

     The Tax Reform Act of 1986 contains  provisions  which limit the ability to
utilize net operating loss carryforwards in the case of certain events including
significant changes in ownership interests. If the


                                      F-12
<PAGE>


                                              TRIMERIS, INC.
                                      (A Development Stage Company)

                                      NOTES TO FINANCIAL STATEMENTS -Continued

Company's NOL's are limited, and the Company has taxable income which exceeds
the permissible yearly NOL, the Company would incur a federal income tax
liability even though NOL's would be available in future years.

     The  components of deferred tax assets and deferred tax  liabilities  as of
December 31, 1996 and 1997 are as follows:


                                                        1996              1997
                                                     --------          --------
                                                           (in thousands)
Deferred tax assets:
Tax loss carryforwards .....................         $  6,823          $ 11,094
Tax credits ................................              261               339
Reserves and accruals ......................              211               257
Start-up costs .............................              109                76
                                                     --------          --------
                                                        7,404            11,766

Valuation allowance ........................           (7,404)          (11,766)
                                                     --------          --------

Net deferred asset .........................               --                --

Deferred tax liabilities:
Deferred tax liability .....................               --                --
                                                     --------          --------

Net deferred tax assets and ................         $     --          $     --
(liability)
                                                     ========          ========

     The Company has established a valuation  allowance against its deferred tax
assets due to the uncertainty surrounding the realization of such assets.

7.   Employee Benefit Plans

     401 (K) Plan

     The Company has adopted a 401(k) Profit Sharing Plan (the "Plan")  covering
all qualified employees. The effective date of the Plan is January 1, 1994.

     Participants  may elect a salary reduction from 1% to 10% as a contribution
to the Plan.  Modifications of the salary  reductions may be made annually.  The
Plan  permits the Company to match up to 8% of a  participant's  salary,  but to
date, the Company has elected not to match participants' contributions.

     The  normal  retirement  age  shall be the  later of a  participant's  65th
birthday  or the  fifth  anniversary  of the first day of the Plan year in which
participation commenced. The Plan does not have an early retirement provision.



                                      F-13
<PAGE>


                                 TRIMERIS, INC.
                          (A Development Stage Company)

                     NOTES TO FINANCIAL STATEMENTS-Continued

     Employee Stock Purchase Plan

     The Company has an Employee  Stock  Purchase  Plan which  permits  eligible
employees  to  purchase  newly  issued  common  stock  of the  Company  up to an
aggregate of 250,000  shares.  Under this plan,  employees may purchase from the
Company a designated number of shares through payroll  deductions at a price per
share  equal to 85% of the  lesser  of the fair  market  value of the  Company's
common  stock as of the date of the grant or the date the right to  purchase  is
exercised. No shares were issued under this plan during 1995, 1996 or 1997.

8.   Supplementary Cash Flow Information

     Capital lease obligations of $345,000,  $330,000 and $211,000 were incurred
in 1995, 1996 and 1997, respectively, for leases of new furniture and equipment.

     During 1995, the Company exchanged notes payable to stockholders, including
accrued interest of $6.4 million for Series B Preferred Stock.

     Shares issued under the license and consulting  agreements have been valued
by the Board of Directors taking into  consideration  the fair value of the most
recently issued preferred stock or the value of the services,  whichever is more
readily determinable.

9.   Commitments and Contingencies

     The Company is involved in certain claims and legal actions  arising in the
ordinary  course  of  business.  In the  opinion  of  management,  the  ultimate
disposition  of these  matters  will not have a material  adverse  effect on the
financial position or results of operations of the Company.




<TABLE> <S> <C>


<ARTICLE>                     5
<MULTIPLIER>                                   1,000
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                              DEC-31-1997
<PERIOD-END>                                   DEC-31-1997
<CASH>                                         32,557
<SECURITIES>                                   4,863
<RECEIVABLES>                                  101
<ALLOWANCES>                                   0
<INVENTORY>                                    0
<CURRENT-ASSETS>                               37,527
<PP&E>                                         2,925
<DEPRECIATION>                                 2,169
<TOTAL-ASSETS>                                 38,844
<CURRENT-LIABILITIES>                          2,794
<BONDS>                                        0
                          0
                                    0
<COMMON>                                       11
<OTHER-SE>                                     35,799
<TOTAL-LIABILITY-AND-EQUITY>                   38,844
<SALES>                                        0
<TOTAL-REVENUES>                               431
<CGS>                                          0
<TOTAL-COSTS>                                  0
<OTHER-EXPENSES>                               12,330
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             113
<INCOME-PRETAX>                                (11,428)
<INCOME-TAX>                                   0
<INCOME-CONTINUING>                            (11,428)
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   (11,428)
<EPS-PRIMARY>                                  (1.55)
<EPS-DILUTED>                                  (1.55)
        

</TABLE>


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