AGOURON PHARMACEUTICALS INC
10-K, 1998-08-04
PHARMACEUTICAL PREPARATIONS
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                UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                    FORM 10-K
(Mark One)
  X ANNUAL REPORT  PURSUANT TO SECTION 13 OR 15(d) OF THE  SECURITIES  EXCHANGE
    ACT OF 1934 For the fiscal year ended June 30, 1998
                                       OR
   TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE 
    ACT OF 1934

Commission file number 0-15609

                          Agouron Pharmaceuticals, Inc.
             (Exact name of registrant as specified in its charter)


          California                                      33-0061928
(State or other jurisdiction of              (I.R.S. EmployerIdentification No.)
 incorporation or organization)

10350 North Torrey Pines Road, La Jolla, California                92037-1020
(Address of principal executive offices)                           (Zip Code)

Registrant's telephone number, including area code:              (619) 622-3000

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

Securities registered pursuant to Section 12(g) of the Act:

                         Common Stock, without 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. Yes X No
                                             ---

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

     On July 28, 1998,  the  aggregate  market value of the common stock held by
nonaffiliates  totaled  approximately  $724,738,000  based on the closing  stock
price as reported by The Nasdaq Stock Market.

     On July 28,  1998,  there were  approximately  31,097,000  shares of common
stock, without par value, of the registrant issued and outstanding.

                       DOCUMENTS INCORPORATED BY REFERENCE

         The registrant's  definitive proxy statement to be prepared pursuant to
Regulation  14A and filed in  connection  with  solicitation  of proxies for its
Annual Meeting of Stockholders,  to be held on October 28, 1998, is incorporated
by reference into Part III of this Form 10-K.

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<PAGE>


                                     PART I

Item 1.  BUSINESS

     Except for the  historical  information  contained  herein,  the  following
"Business"  section contains  forward-looking  statements that involve risks and
uncertainties  which could cause actual results to differ  materially from those
discussed  here.  Readers are  cautioned  not to place  undue  reliance on these
forward-looking statements, which speak only as of the date hereof. Factors that
could cause or contribute to such differences  include,  but are not limited to,
those discussed in the "Business"  section and Exhibit 99 to this Form 10-K. The
Company  undertakes  no  obligation  to  publicly  release  the  results  of any
revisions to these forward-looking statements to reflect events or circumstances
after the date hereof or to reflect the occurrence of unanticipated events.

General

     Agouron  Pharmaceuticals,  Inc.  ("Agouron" or the "Company") was organized
and  incorporated  in  California  in  June  1984.   Agouron  is  an  integrated
pharmaceutical  company committed to the discovery,  development,  manufacturing
and  marketing of  innovative  therapeutic  products  engineered  to  inactivate
proteins which play key roles in cancer,  AIDS and other serious  diseases.  The
Company,  through  its  own  sales  and  marketing  organization,  is  currently
marketing in the United States its first drug, VIRACEPT(r) (nelfinavir mesylate)
for treatment of HIV  infection.  The Company is also  conducting  pivotal phase
II/III clinical trials for AG3340 for treatment of lung and prostate cancer.  In
addition,  Agouron is expected to initiate a phase II/III pivotal clinical trial
of REMUN(tm)  (AG1661),  an immune-based  therapeutic agent for treatment of HIV
infection  and AIDS  being  co-developed  by  Agouron  and The  Immune  Response
Corporation  ("IRC").  Further, the Company has a number of programs in progress
for discovery or development  of other new drugs in the fields of cancer,  viral
disease and other serious  diseases.  The Company is also using the  proprietary
core drug discovery technology of Alanex Corporation ("Alanex"),  a wholly-owned
subsidiary  of the  Company,  to  accelerate  the steps  necessary  to  discover
small-molecule  drug candidates,  from the initial  identification  of compounds
that exhibit activity against selected  biological targets to the progression of
these compounds to drug candidates for human clinical trials.

Agouron's  long-term  goal is  increasing  profitability  from the sale of drugs
generated  from  its own  drug  discovery  and  development  efforts,  and  from
development and commercialization of drugs originated outside of the Company. To
augment its  technical  capabilities,  to enhance the  likelihood  of successful
commercialization of its products and to offset some of its operating costs, the
Company has entered into  collaborative  research and  development  arrangements
with other companies.  The Company has generally retained significant commercial
rights in drugs developed in its collaborative research and development programs
funded  in whole  or in part by  other  companies  and has  secured  significant
commercial  rights  in  those  products  that  it  has  in-licensed  from  other
companies. The Company anticipates that its successfully developed products will
be commercialized both through its own direct sales and marketing  activities in
certain   pharmaceutical   markets  and  through   manufacturing  and  marketing
relationships with other pharmaceutical companies.


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<PAGE>


     The Company's common stock  capitalization  has evolved through a series of
public  offerings  and  private  placements  of its  equity  securities  and the
exercise of various  warrants and employee stock options.  Five public offerings
have generated net proceeds of  approximately  $211,600,000  and the issuance of
approximately  19,788,000 shares. The most recent public offering in 1996 raised
approximately  $77,245,000  through the  issuance of 5,470,000  shares.  Private
placements  have  generated  approximately  $17,100,000  in net proceeds and the
issuance of  approximately  5,564,000  shares.  The  exercise  of  warrants  and
employee stock options  (including  employee  stock purchase plan  transactions)
have  generated  proceeds  of  approximately  $29,750,000  and the  issuance  of
approximately  4,250,000  shares.  In 1997,  the  Company  acquired  Alanex in a
purchase  transaction through the issuance of approximately  1,444,000 shares of
the Company's common stock valued at approximately $61,000,000.  The Company has
also recorded an aggregate increase to common stock of approximately $29,000,000
which  reflects  the tax benefit of stock  options that were  exercised  through
fiscal 1998.

Narrative Description of Business

     Agouron  is  developing  innovative  drugs for  treatment  of  cancer,  HIV
infection and other serious diseases and has expended approximately $449,000,000
on  research  and  development  since its  inception,  excluding  a  $57,500,000
write-off for  in-process  technology  purchased in 1997 in the  acquisition  of
Alanex.

VIRACEPT

     In  March  1997,  the  Company  received  clearance  from the Food and Drug
Administration ("FDA") to market its first drug, VIRACEPT, a potent HIV protease
inhibitor  that  substantially  decreases  viral load and  increases  CD4+T cell
counts  when  used  in  combination   antiretroviral  drug  therapy.  An  orally
administered product, VIRACEPT is available in adult and pediatric formulations.

     VIRACEPT  sales in the United States totaled  $358,321,000  in fiscal 1998.
The Company estimated that 85,000 patients in the United States (over 120,000 in
the world) were taking VIRACEPT at the end of June 1998. It is anticipated  that
continued increasing VIRACEPT sales will make a substantial  contribution toward
profitable financial results in the future.

     Agouron  developed   VIRACEPT  in  collaboration  with  the  pharmaceutical
division of Japan  Tobacco Inc.  ("JT").  Agouron and JT have granted  exclusive
royalty bearing  marketing rights outside of North America and parts of Japan to
F.  Hoffmann-La  Roche Ltd  ("Roche").  The Company and JT share profits  and/or
royalties equally from the world-wide commercialization of VIRACEPT.

     In January and March 1998,  VIRACEPT was  approved for  marketing in Europe
and Japan, respectively.  VIRACEPT license fees and royalties from Roche totaled
$17,852,000 in 1998.

Research and Development Programs

     Agouron's  research and development  programs focus on the areas of cancer,
AIDS and other serious  diseases.  Agouron's drug  discovery  programs apply the
Company's core technologies of

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<PAGE>


three-dimensional  structure based drug design and high-throughput  screening of
chemical libraries generated by computation-directed combinatorial chemistry.

     The  following  table  outlines  the  status  of  various  programs  in the
Company's research and development portfolio.  Agouron is pursuing some of these
programs independently,  while others are being undertaken in collaboration with
other companies.
<TABLE>
<CAPTION>

                                                                                         Research
                                                                                            and
                                                                                        Development
              Program                              Indication                              Stage
- -------------------------------     --------------------------------------------        ------------
<S>                                 <C>                                                 <C>

Cancer

     AG3340                         Solid Tumors                                        Phase II/III
     AG3433                         Solid Tumors                                        Preclinical
     AG2034                         Solid Tumors                                        Phase I
     AG2037                         Solid Tumors                                        Preclinical
     cdk Inhibitors                 Solid Tumors                                        Research
     PARP(1)  Inhibitors            Solid Tumors                                        Research
     VEGF Inhibitors                Solid Tumors                                        Research
     GnRH Antagonist                Hormone-Dependent Solid Tumors                      Research


Viral Disease

     VIRACEPT(2)                    HIV Infection                                       Approved
     REMUNE (AG1661)(3)             HIV Infection                                       Phase II/III
     AG1549 (S-1153)(4)             HIV Infection                                       Phase I
     AG1776 (JE-2147)(5)            HIV Infection                                       Preclinical
     AG7088                         Common Cold                                         Preclinical
     Hepatitis C agents(6)          Viral Disease                                       Research
     HIV Integrase Inhibitors       HIV Infection                                       Research

Ophthalmology

     AG3340                         Macular Degeneration                                Phase II
     Other MMP Inhibitors           Macular Degeneration                                Preclinical
     VEGF Inhibitors                Macular Degeneration                                Research
</TABLE>


(1)  In collaboration with Cancer Research Campaign Technology Ltd.
(2)  In collaboration with Japan Tobacco Inc. and F. Hoffmann-La Roche Ltd.
(3)  In collaboration with The Immune Response Corporation.
(4)  In collaboration with Shionogi & Co., Ltd.
(5)  In collaboration with Japan Energy Corporation.
(6)  In collaboration with Japan Tobacco Inc.

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<PAGE>



Cancer

Overview

     The  development  of new drugs for treatment of cancer is a key  scientific
and commercial focus of the Company. Cancer is the second leading cause of death
in the United States and most  developed  nations.  While much progress has been
made in the  treatment of certain  forms of cancer,  most  existing  anti-cancer
drugs display limited  efficacy and  significant  toxicities that restrict their
clinical  usefulness.  As a  result,  there  remains  a  critical  need  for new
anti-cancer drugs which are less toxic and more efficacious than those currently
available    either   as    tumoricidal    (tumor-killing)    or    tumoristatic
(tumor-controlling) agents.

     The Company's  anti-cancer  drug discovery and development  programs pursue
inhibitors  of  the  following  enzymes:   matrix   metalloproteases   ("MMPs");
glycinamide ribonucleotide  formyltransferase ("GART"); cyclin dependent kinases
("cdk");  gonadotropin releasing hormone ("GnRH");  poly (ADP ribose) polymerase
("PARP"); and vascular endothelial growth factor ("VEGF") kinase.

MMP Inhibitors: AG3340 and AG3433

     AG3340 is an orally  delivered  anti-angiogenesis  drug designed to inhibit
the growth,  invasion and  metastasis  of solid tumors by  inactivating  certain
members of a family of enzymes known as MMPs. AG3340 selectively  inhibits those
MMPs believed to be involved in angiogenesis  and tumor  progression.  A primary
goal of clinical  studies of AG3340 is to  determine  whether  this  distinctive
selectivity results in a favorable clinical profile of safety and efficacy.

     In fiscal 1998,  Agouron  completed  two phase I studies of AG3340.  In one
phase I study, AG3340 was administered orally twice daily (BID) in patients with
advanced cancer,  including lung,  prostate,  kidney,  and colorectal cancers as
well as sarcoma and melanoma.

     A separate phase I study found that AG3340 in combination with chemotherapy
was generally well tolerated among patients with advanced  prostate cancer whose
disease was resistant to hormonal therapies.

     In  preclinical  studies,  AG3340 has been  shown to inhibit  angiogenesis.
AG3340   was  also   found  to  be  a  potent   inhibitor   of  the   growth  of
chemotherapy-resistant  human  non-small cell lung cancer tumors in mice.  Here,
administration  of AG3340 resulted in a dose-dependent  decrease in tumor growth
by up to 65% as compared to controls.

     In May 1998,  Agouron  initiated  phase II/III  clinical trials in patients
with advanced lung or prostate cancer.  The Company presently retains all rights
to AG3340 in the fields of cancer and ophthalmology.


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<PAGE>


     Agouron  is  also   conducting   preclinical   research   on  a  stable  of
third-generation  MMP  inhibitors,  including  AG3433,  which  has even  greater
selectivity than AG3340 for those MMPs related to cancer.

GART Inhibitors:  AG2034 and AG2037

     AG2034  is a  potent,  selective  inhibitor  of GART,  a key  enzyme in the
biochemical  pathway  through which tumor cells  synthesize  purines,  essential
components of DNA.  With the exception of liver cells,  all normal human tissues
obtain purines through an alternative pathway (the purine salvage pathway).  The
Company  believes that inhibitors of GART will show a high degree of selectivity
for  tumor  cells  and  less   significant   bone  marrow  toxicity  than  other
chemotherapeutic agents. The Company is completing dose-ranging phase I clinical
trials that will establish an appropriate dose for AG2034.

     AG2037 was designed to have markedly reduced binding to the membrane folate
binding  protein  ("mFBP")  because tight binding to this receptor is one likely
source of the toxicity  observed  with  lometrexol,  the first  molecule in this
class to be tested  clinically by Eli Lilly and Company  (assays of mFBP binding
have been routine for compounds generated in this program).  AG2037 shows potent
inhibition of GART as a monoglutamate  and can be  polyglutamylated.  Because of
its weaker binding to mFBP, AG2037 access is restricted to only those cells with
reduced folate carrier.  Preclinical studies have shown that GART inhibitors are
potentially  cytotoxic  (kills cells) to at least certain cancer cell types with
mutant p53 genes,  a common  genetic  abnormality  in human cancer.  The Company
retains all  commercial  rights to compounds  resulting  from its GART inhibitor
programs.

cdk Inhibitors

     Cdks are enzymes that play key roles in regulating the cell cycle.  Certain
members of this family of enzymes,  such as cdk4 and cdk2,  have been implicated
as drivers of cells from a normally  quiescent  state to a highly  proliferative
state  characteristic  of human cancer.  Agouron is engaged in a drug  discovery
program aimed at the design of selective small-molecule drugs with the potential
to inhibit  the  activity of such cdks and  therefore  block the  transition  of
cancer cells into their proliferative  phase. The Company retains all commercial
rights to compounds resulting from this program.

PARP Inhibitors

     PARP is an enzyme which is activated by DNA-strand  breaks and is important
in the  immediate  cellular  response  to DNA  damage.  The  activity of PARP is
involved  in  recruiting  repair  enzymes to the site of DNA damage so that cell
division can proceed faithfully.  Inhibition of PARP has profound effects on the
survival  of  cells  following  exposure  to  DNA-damaging  agents;  thus,  PARP
inhibitors may be useful in conjunction  with chemo- and  radio-therapy to treat
tumors.   PARP   inhibitors   discovered  at  Agouron  have  been  confirmed  as
chemopotentiating  agents in cells and preliminary  testing in tumors in animals
is underway.  The Company has exclusive commercial rights in compounds resulting
from this program, which are being pursued in collaboration with Cancer Research
Campaign Technology, Ltd.


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<PAGE>



VEGF Inhibitors

     The process known as angiogenesis (the formation of new blood vessels) is a
key  factor in the  maintenance  and  progression  of  several  disease  states,
including  the  metastasis of malignant  tumors.  The ability of cancer cells to
carry out  angiogenesis  depends in part upon the activity of a protein known as
VEGF,  which,  by  binding  to a  receptor  (known as kdr) on the cell  surface,
triggers the development of growth factor endothelial cells.  Agouron is engaged
in a  program  to  design  drugs  that  block  the kdr  receptor  for VEGF  and,
therefore,  compromise  the  ability  of tumors to carry  out a key  process  in
angiogenesis.  The Company retains all commercial rights to compounds  resulting
from this program.

GnRH Antagonist Program

     GnRH is a  decapeptide  that is  synthesized  in the brain and controls the
pituitary and gonadal hormones that regulate fertility and the growth of certain
hormone-dependent  tumors (in women,  this  peptide is required  for  successful
ovulation  and, in men,  it is  necessary  for  spermatogenesis).  The  Company,
through  its Alanex  subsidiary,  is  currently  pursuing a program to  discover
certain orally active  small-molecule  drugs to treat two areas of human disease
that depend on GnRH action:  endometriosis and sex-hormone dependent tumors. The
Company retains all commercial rights to compounds resulting from this program.

Viral Disease

Overview

     The development of new drugs for the treatment of certain viral diseases is
another important scientific and commercial focus of the Company. The Company is
presently  conducting  programs aimed at discovery and/or development of several
classes of  anti-viral  drugs that block viral  proteases,  enzymes  required by
several  families of pathogenic  viruses to carry out replication and infection.
Agouron's anti-viral drug programs include HIV protease inhibitors (VIRACEPT and
AG1776),  an  immune-based   therapeutic  (REMUNE),  a  non-nucleoside   reverse
transcriptase  inhibitor  (AG1549),   rhinovirus  3C  protease  inhibitors,  and
hepatitis  C enzymes.  Agouron is  developing  certain of its  anti-viral  drugs
through  collaborations  with JT,  Roche,  IRC,  Shionogi & Co.,  Ltd. and Japan
Energy Corporation.

HIV Protease Inhibitor: VIRACEPT

     HIV protease is an enzyme that performs an essential role in the infectious
cycle of HIV, and clinical  research has  demonstrated  that  inhibition  of the
protease  enzyme renders HIV unable to form new infectious  virus.  Today,  five
FDA-approved  HIV  protease  inhibitors   (including   VIRACEPT)  are  making  a
significant contribution in the management of HIV disease.

     VIRACEPT was cleared by the FDA for marketing in the United States in March
1997  pursuant  to the  FDA's  guidelines  for  accelerated  approval.  VIRACEPT
development  activities now include certain  additional  phase II/III studies to
facilitate  the full approval of the drug and certain phase IV studies  designed
to expand the utilization of the product.

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<PAGE>



Immune-based therapeutic agent:  REMUNE(tm) (AG1661)

     An important  recent goal in treatment of HIV  infection is to combine such
highly active drugs as HIV protease  inhibitors,  capable of halting replication
of HIV, with agents capable of directly enhancing recovery of the immune system.
REMUNE is an immune-based  therapeutic agent, derived from HIV itself, which has
been  shown to  stimulate  the  immune  system to  respond  specifically  to HIV
infection and to produce the increases in substances such as chemokines that may
provide   protection  to  uninfected   cells.   Discovered  by  IRC,  REMUNE  is
administered  as an  intramuscular  injection  every three months,  and has been
well-tolerated in clinical trials to date.

     In May 1997,  enrollment  was  completed at 74 centers in the United States
for a pivotal phase III, clinical end-point trial in which  approximately  2,500
patients were randomized to receive  conventional  anti-retroviral  drug therapy
with or without  REMUNE.  This study is expected to be  completed in March 1999.
More than 250 patients  have been enrolled in two other  clinical  studies which
are evaluating the effect of REMUNE in combination with anti-retroviral drugs on
virologic  and  immunologic  markers  in adults.  A smaller  study of REMUNE for
treatment of HIV infection in children is in progress at the National Institutes
of Health.

     In  June  1998,  Agouron  and  IRC  began  a  collaboration  on  the  final
development and  commercialization  of REMUNE.  Agouron has exclusive  rights to
market REMUNE in North  America,  Europe and certain other  countries;  IRC will
manufacture  commercial  supplies of REMUNE.  Agouron and IRC will share equally
all profits from the commercialization of REMUNE in the licensed territory.

Non-nucleoside reverse transcriptase inhibitor (NNRTI):  AG1549 (S-1153)

     AG1549 is a  second-generation  NNRTI for the  treatment of HIV  infection.
Discovered by Shionogi & Co., Ltd. ("Shionogi"), AG1549 is currently the subject
of several  clinical  trials  evaluating its dose and its  concomitant  use with
other anti-retroviral treatments. AG1549 is of high clinical interest because it
is ten times more  potent in vitro than  currently  approved  NNRTIs and because
AG1549 is fully active in vitro against HIV  containing  the most common genetic
mutation (at position 103) associated with resistance to other NNRTIs.

     Agouron  has   exclusive   world-wide   rights  to  the   development   and
commercialization of AG1549, except in Japan, South Korea and Taiwan, subject to
the payment of royalties to Shionogi.

HIV Protease Inhibitor:  AG1776 (JE-2147)

     AG1776  is a  protease  inhibitor  for  the  treatment  of  HIV  infection.
Preclinical  data indicate that AG1776,  discovered by Japan Energy  Corporation
("JE"),  works  synergistically  in vitro with other  protease  inhibitors.  The
compound has also exhibited activity against HIV mutations  commonly  associated
with resistance to other protease inhibitors.


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<PAGE>


     Agouron  has   exclusive   world-wide   rights  to  the   development   and
commercialization  of AG1776  except  in Japan,  South  Korea,  North  Korea and
Taiwan,  subject to the payment of  royalties  to JE; JE will  manufacture  bulk
compound for use in final drug product.

Rhinovirus 3C Protease Inhibitor:  AG7088

     Rhinoviruses  are  believed  to be the single  most  frequent  cause of the
common  cold.  While  rhinovirus  infections  are a periodic  annoyance  to most
individuals,  they may produce more severe and prolonged symptoms in people with
chronic obstructive pulmonary disease,  such as asthma and emphysema.  All known
strains of rhinoviruses depend on a critical enzyme, the 3C protease, at several
stages of their life cycle for production of new infectious viruses. Agouron has
designed potent, selective rhinovirus 3C protease inhibitors,  including AG7088,
that are currently being evaluated in preclinical  pharmacological  studies. The
Company retains all commercial rights in compounds resulting from this program.

HIV Integrase Inhibitors

     The drugs  currently  approved in the United  States for  treatment  of HIV
infection consist of reverse  transcriptase  inhibitors and protease  inhibitors
(including  VIRACEPT).  Another  mechanism  of  action  is  inhibition  of HIV-1
integrase, a key enzyme in catalyzing the integration of HIV into human cells.

     Agouron  scientists  believe  that  blocking  HIV  integrase  is  a  viable
therapeutic  strategy  that  will  abort  completion  of the viral  life  cycle,
preventing  infection of new,  uninfected target cells.  Scientists also believe
that HIV integrase is an attractive target because it is extremely unlikely that
an  HIV   integrase-specific   inhibitor  will  nonspecifically   inhibit  other
eukaryotic enzymes.  This fact may possibly reduce the incidence of side effects
of an integrase  inhibitor used to treat HIV infection.  The Company retains all
commercial rights in compounds resulting from this program.

Anti-Hepatitis C Drugs

     The hepatitis C virus ("HCV") is a virus that causes illnesses ranging from
a mild flu-like  disease to  progressive  liver  disease,  cirrhosis and primary
liver  cancer.  The ability to treat  infection by HCV  represents a significant
unmet clinical need,  particularly in Asian countries.  HCV depends upon several
key enzymes for the production of new infectious virus.  Agouron scientists have
initiated  programs  to design new classes of  anti-viral  drugs that block such
enzymes and disrupt the HCV life cycle.  The Company is pursuing  this  research
program in collaboration with JT.

Ophthalmology

Overview

     A hallmark of many serious retinal disorders,  such as age-related  macular
degeneration,  macular edema,  retinopathy  of  prematurity,  and  proliferative
diabetic retinopathy,  is an extensive proliferation of new blood vessels in the
retina and underlying choroid. This process, known as

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<PAGE>


angiogenesis  or  neovascularization,  often  leads to  retinal  hemorrage  that
results in the loss of ganglion cells,  degeneration of the central optic nerve,
and  eventually  loss of  central  and/or  peripheral  vision.  The most  common
neovascular  retinal disorder,  namely  age-related  macular  degeneration,  has
recently  become a leading  cause of blindness in the elderly  population in the
industrialized world.

     In common with other  tissues,  the growth of new blood vessels is mediated
by many  factors  including  various  members  of the  family of MMPs,  VEGF and
Fibroblast  Growth  Factors  ("FGF")  and their  respective  receptors  and some
members  of  the  integrin  family  of  receptors   involved  in  cell-cell  and
cell-matrix  interactions.  In ocular tissues,  the production of these factors,
receptors  and MMPs is increased by local  hypoxia,  the most notable  condition
believed  to  stimulate   retinal  and   subretinal   neovascularization.   Most
significantly,  in the ocular tissue of patients with any of the above mentioned
diseases,  elevated levels of growth factors,  integrins and MMPs (in particular
MMP-2 and MT-MMP-1) were consistently identified.

     Key  mediators  of  angiogenesis   have  been  associated  with  ophthalmic
disorders.  VEGF and basic FGF are strongly  implicated as causative  angiogenic
agents in a variety of  studies.  In ocular  tissues,  the  production  of these
growth factors is increased by hypoxia,  the most notable condition  believed to
stimulate  retinal  angiogenesis.  Most  significantly,  in patients  undergoing
surgery,  high levels of VEGF in ocular fluid were found associated with macular
degeneration,  active  diabetic  retinopathy,  central vein  occlusion and other
disorders.

     Current studies in the area of  ophthalmology  involve an assessment of the
impact that inhibitors of MMPs might have on therapeutic practice and in meeting
medical needs in these areas. Agouron is conducting in animal models a series of
proof-of-principle preclinical studies of ocular diseases with the MMP inhibitor
AG3340 in preparation for the  commencement of human clinical  studies.  Agouron
has recently  demonstrated  significant  accumulation  of AG3340 in the vitreous
humor of rats and monkeys following oral dosing.

     Likewise,  it is anticipated  that when suitable  inhibitors of VEGF become
available,  they will be tested in the existing ocular angiogenesis models prior
to selection of a lead compound for clinical  development.  The Company  retains
all commercial rights in compounds resulting from this program.

Business Relationships/Research and Development Agreements

     The Company has funded its research and development  primarily from working
capital  generated  from  both  private  and  public  sales of  Agouron  equity,
collaborative arrangements and the financial contribution resulting from product
sales.  The Company has an ongoing  program of business  development  which may,
from time to time,  lead to the  establishment  of corporate  collaborations  in
addition to those noted below.

Japan Tobacco Inc.

     In February 1994, the Company entered into a strategic  alliance with JT in
the  field of  anti-viral  drugs  for the  treatment  of  infections  caused  by
hepatitis C and the herpes  family of viruses.  In  December  1994,  the Company
added its anti-HIV drug, VIRACEPT, to the JT collaboration

                                       10
<PAGE>


with the execution of a world-wide development and licensing agreement.  Agouron
and JT share equally the costs of further development of VIRACEPT.

     Currently,  Agouron has exclusive  commercial  rights to VIRACEPT (with the
right to sublicense) in North America and JT has exclusive  commercial rights to
VIRACEPT (with the right to  sublicense) in certain parts of Japan.  The Company
and  JT  share   profits   and/or   royalties   equally   from  the   world-wide
commercialization of VIRACEPT.

Roche

     The Company and JT have granted Roche  certain  exclusive  royalty  bearing
marketing  rights  to  VIRACEPT  outside  of North  America  and parts of Japan.
Further,  the  Company  receives  royalties  based  either on  Roche's  sales of
VIRACEPT   or,  in   certain   circumstances,   Invirase(r)   and   Fortavase(r)
(saquinavir),   Roche's  HIV  protease  inhibitors.   Roche  has  the  right  to
manufacture  VIRACEPT  for  its  own  use  and  is  expected  to  commence  such
manufacturing in calendar 1999.

The Immune Response Corporation

     In June 1998, the Company  entered into a binding letter of intent with IRC
to  collaborate  on  final  development  and  commercialization  of  REMUNE,  an
immune-based  therapeutic  agent  discovered by IRC and currently the subject of
several  clinical  studies  including a large phase III clinical trial.  The two
companies intend to enter promptly into a definitive agreement and will endeavor
to complete development and registration of REMUNE in 1999. IRC will manufacture
commercial  supplies of REMUNE, and Agouron will have exclusive rights to market
REMUNE in North America,  Europe and certain other countries.  The two companies
will share  equally  all  profits  from the  commercialization  of REMUNE in the
licensed  territory.  Agouron paid an initial  $10,000,000 license fee to IRC in
June 1998 and also  purchased  118,256  newly  issued  common  shares of IRC for
$2,000,000.   Agouron  may  pay,   assuming  ongoing   successful   development,
registration  and approval of REMUNE,  to IRC up to  $53,000,000  in  additional
development  and milestone  payments and  $12,000,000 in purchases of additional
IRC common stock.

Shionogi & Co., Ltd.

     In June 1998,  the  Company  entered  into a binding  letter of intent with
Shionogi to develop and commercialize AG1549, a second-generation  NNRTI for the
treatment of HIV  infection.  Discovered  by Shionogi,  AG1549 is currently  the
subject of several  clinical trials  evaluating its dose and its concomitant use
with  other  antiretroviral  treatments.  AG1549  is of high  clinical  interest
because  it is ten  times  more  potent  in vitro  than  such  other  NNRTIs  as
nevirapine  (Viramune(r)  and delavirdine  (Rescriptor(r)  and because AG1549 is
fully active in vitro against HIV containing  the most common  genetic  mutation
(at  position  103)  associated  with  resistance  to  other  NNRTIs,  including
efavirenz (Sustiva(tm)).

     Agouron  has   exclusive   world-wide   rights  to  the   development   and
commercialization  of AG1549  except in Japan,  South Korea and Taiwan.  Agouron
paid an initial  $10,000,000  license fee to Shionogi in June 1998.  Agouron may
pay,  assuming  ongoing  successful  development,  registration  and approval of
AG1549, additional license fees of up to $30,000,000.  In addition, Agouron will
pay Shionogi royalties based on sales, if any, of AG1549.

                                       11
<PAGE>



Japan Energy Corporation

     In June 1998, the Company  entered into an agreement with JE to develop and
commercialize  AG1776,  a novel  protease  inhibitor  for the  treatment  of HIV
infection.  Preclinical  data  indicate  that  AG1776,  discovered  by JE, works
synergistically in vitro with other protease  inhibitors.  The compound has also
exhibited  activity  against  mutations  commonly  associated with resistance to
other protease inhibitors.

     Agouron  has   exclusive   world-wide   rights  to  the   development   and
commercialization  of AG1776  except  in Japan,  South  Korea,  North  Korea and
Taiwan; JE will manufacture bulk compound for use in final drug product. Agouron
incurred  an initial  $6,000,000  license  fee in June 1998.  Agouron may incur,
assuming ongoing  successful  development,  registration and approval of AG1776,
additional license fees of up to $20,000,000.  In addition,  Agouron will pay JE
royalties based on sales, if any, of AG1776.

Competition

     The  pharmaceutical  and  biotechnology  industries  are subject to intense
competition and rapid and significant  technological  change. Many companies and
organizations,  including  major  pharmaceutical,   biotechnology  and  chemical
companies,  universities,  and other  research  organizations,  are  engaged  in
discovery and  development  of drugs for diseases  targeted by the Company.  For
example, the Company is aware of several pharmaceutical  companies that have HIV
protease inhibitors, some of which are currently being marketed, including those
of Abbott Laboratories,  Inc. ("Abbott"), Merck & Co., Inc. ("Merck") and Roche.
Certain companies and  organizations  have  substantially  greater financial and
other  resources,  larger  research and  development  staffs and more  extensive
production and marketing  organizations,  experience and  capabilities  than the
Company. In addition, many companies have significantly more experience than the
Company in  preclinical  testing  and in  conducting  human  clinical  trials of
potential  pharmaceutical  products  and in obtaining  FDA and other  regulatory
approvals. Furthermore, many such companies and organizations maintain or pursue
extensive  patent  portfolios that could now or in the future pose a risk to the
Company's ability to obtain patent protection for, or practice,  its proprietary
technology. All of these companies and other research organizations compete with
the Company in recruiting  and retaining  highly  qualified  scientific,  sales,
marketing, manufacturing, administrative and management personnel.

     Agouron  was the first  company  to devote  itself to the  development  and
application  of  protein  structure-based  drug  design.  As such,  the  Company
believes  that  it  has  achieved  certain  competitive  advantages,   including
developmental  lead-time,   level  of  commitment  to  the  technology  and  the
development  of certain  practical or technical  capabilities.  In recent years,
however,   several   pharmaceutical   companies  have  undertaken  to  establish
capabilities  in protein  structure-based  drug  design,  either  internally  or
through academic collaborations, and can be presumed to be engaged in the use of
such technology for the same purposes as is the Company.  Certain  biotechnology
companies  and other  companies  have  also  entered  into the field of  protein
structure-based drug design. For example,  Abbott,  Novartis, Glaxo Wellcome plc
("Glaxo"),   Merck  and  Roche  have  developed   programs  focused  on  protein
structure-based drug design. The Company expects that the technology for protein
structure-based drug design will become more

                                       12
<PAGE>


widely  implemented  over time and will  ultimately  become  more  common in the
pharmaceutical industry.

     The Company believes that its ability to compete successfully will be based
on its  ability  to create  and  maintain  scientifically  advanced  technology,
attract and retain scientific personnel with a broad range of expertise,  obtain
patent  protection  or  otherwise  develop  proprietary  products or  processes,
conduct  clinical  trials and obtain required  government  approvals on a timely
basis,  select and pursue  drug design  projects  in areas in which  significant
market  opportunities  exist or are  likely  to  develop,  manufacture  (or have
manufactured) its products on a cost-effective basis and successfully market its
products  either  alone or in  conjunction  with others.  Many of the  Company's
competitors  have  substantially  greater  financial  resources,   clinical  and
regulatory  experience,  manufacturing  capabilities  and  sales  and  marketing
organizations  than Agouron.  Moreover,  the Company's  competitors could obtain
patents  relating  to  Agouron's  products  or  technology,  which could have an
adverse impact on the Company.

     Currently, five HIV protease inhibitors are available in the United States.
FDA approval dates and estimated prescription market shares at June 30, 1998 are
noted in the following table:
<TABLE>
<CAPTION>

  
         Company           Product Name          Generic Name            Approval              Market Share
         <S>               <C>                   <C>                     <C>                   <C>
         Agouron           VIRACEPT(r)           nelfinavir              March, 1997                 32%
         Roche             INVIRASE(r)           saquinavir              December, 1995               8%
         Roche             FORTOVASE(r)          saquinavir              October, 1997               13%
         Abbott            NORVIR(r)             ritonavir               March, 1996                 14%
         Merck             CRIXIVAN(r)           indinavir               March, 1996                 33%
</TABLE>

     Future competition from new HIV protease  inhibitors is expected from Glaxo
and other  pharmaceutical  companies.  Additional  competition  may  arise  from
non-protease inhibitor products as such products enter the market.  Furthermore,
competition may arise from generic manufacturers of nelfinavir,  notwithstanding
Agouron's patent protection discussed below.

Patents and Trade Secrets

     The Company seeks patent  protection  for its  proprietary  technology  and
potential  products in the United States and in foreign  countries.  Most of the
Company's  products are expected to be synthetic chemical compounds which may be
afforded patent  protection  under principles and procedures well established by
the governmental patent offices under the patent law of the particular country.

     The Company's  strategy is to pursue a strong patent  portfolio and Agouron
holds several  patents,  including a United States patent  covering the chemical
composition  of  VIRACEPT  and other  United  States  patents  covering  certain
compounds in development, such as AG3340. The Company is currently prosecuting a
number  of  patent  applications  in the  United  States  and in  various  other
countries  seeking   protection  for  certain  series  of  compounds  and  other
proprietary technology. The Company will continue to file patent applications on
its evolving technology, processes and products.

     The  Company's  and/or its  collaborators'  failure to obtain and  maintain
patent  protection for its products could have an adverse impact on the Company.
Moreover, since there can be no

                                       13
<PAGE>


assurance  that Agouron's  patents will be upheld as valid and  enforceable in a
court of law, a holding of invalidity or  unenforceability of an Agouron (or its
collaborators')  patent(s)  asserted against an alleged  infringer could have an
adverse impact on the Company.

     Many  of the  processes  and  much of the  know-how  of  importance  to the
Company's  technology  depend upon the skills,  knowledge and  experience of its
scientific and technical personnel,  which skills,  knowledge and experience are
not  patentable  per se. To  protect  its  rights in these  areas,  the  Company
requires all employees,  significant consultants and advisors, and collaborators
to  enter  into  confidentiality  agreements  with  Agouron.  There  can  be  no
assurance, however, that these agreements will provide meaningful protection for
the Company's trade secrets,  know-how or other  proprietary  information in the
event of any unauthorized  use or disclosure of such trade secrets,  know-how or
proprietary  information.  Further,  in the  absence of patent  protection,  the
Company may be exposed to competitors who  independently  develop  substantially
equivalent  technology or otherwise gain access to the Company's  trade secrets,
knowledge or other proprietary information.

     Moreover,  since there can be no assurance that another  company has not or
will not obtain any patent relevant to an Agouron product or technology;  such a
patent by another company could have an adverse impact on Agouron.

Government Regulation

     The  production  and  marketing of the  Company's  products and its ongoing
research  and  development  activities  are  subject to  regulation  for safety,
efficacy and quality by numerous  governmental  authorities in the United States
and other  countries.  Pharmaceutical  products  intended for therapeutic use in
humans are principally  governed by the FDA regulations in the United States and
by comparable  government  regulations in foreign  countries.  Various  federal,
state and local statutes and  regulations  also govern or influence the research
and  development,  manufacturing,  safety,  labeling,  storage,  record keeping,
distribution  and  marketing  of  such  products.   The  process  of  completing
preclinical  and  clinical  testing and  obtaining  the  approval of the FDA and
similar  health  authorities  in foreign  countries to market a new drug product
requires  a  significant  number of years  and the  expenditure  of  substantial
resources and may subject the Company to product liability exposure. Failures or
delays by the Company or its collaborators or licensees in obtaining  regulatory
approvals  would  adversely  affect the marketing of products being developed by
the Company and the Company's ability to receive product revenues or royalties.

     The  steps  required  by the  FDA  before  a new  human  pharmaceutical  or
biological product may be marketed in the United States include: (a) preclinical
laboratory tests, in vivo preclinical studies and formulation  studies;  (b) the
submission to the FDA of a request for  authorization to conduct clinical trials
on an Investigational New Drug application ("IND"),  which must become effective
before human  clinical  trials may  commence;  (c) adequate and  well-controlled
human  clinical  trials to establish the safety and efficacy of the drug for its
intended  use; (d)  submission to the FDA of a New Drug  Application  ("NDA") or
Product License  Application ("PLA") and (e) review and approval of a NDA or PLA
by the FDA before the drug product may be shipped or sold commercially. Prior to
obtaining FDA approval for each product,  each  manufacturing  establishment for
new drugs must be registered with and receive appropriate approval by the

                                       14
<PAGE>


FDA. If, after  receiving  approval from the FDA, a material change is made
in the manufacturing  process or location,  additional  regulatory review may be
required.

     Preclinical  tests include  laboratory  evaluation of product chemistry and
formulation,  as well as animal studies to assess the safety and efficacy of the
product. Preclinical test results are submitted to the FDA as a part of the IND.
Clinical trials are typically conducted in three sequential phases, although the
phases may overlap. Phase I represents the initial administration of the drug to
a small group of humans,  either  healthy  volunteers  or patients,  to test for
safety, dosage tolerance,  absorption,  distribution,  metabolism, excretion and
clinical  pharmacology  and, if possible,  early  indications of  effectiveness.
Phase II  involves  studies  in a small  sample of the actual  intended  patient
population  to assess the  efficacy of the  investigational  drug for a specific
clinical indication,  to ascertain dose tolerance and the optimal dose range and
to collect  additional  clinical  information  relating to safety and  potential
adverse effects. Once an investigational drug is found to have some efficacy and
an acceptable clinical safety profile in the targeted patient population,  phase
III studies are often initiated to further  establish safety and efficacy of the
investigational  drug in a broader sample of the target patient population.  The
results of the  clinical  trials  together  with the results of the  preclinical
tests and complete  manufacturing  information  are submitted in a NDA or PLA to
the FDA for approval.

     If a NDA or PLA is  submitted to the FDA,  there can be no  assurance  that
such application will be reviewed and approved by the FDA in a timely manner, if
at all.  Even after  initial FDA approval has been  obtained,  further  studies,
including   post-market   studies,   may  be  required  to  provide   additional
information.  Results  of such  post-market  programs  may limit or  expand  the
further marketing of the product.

     The Company is also subject to foreign  regulatory  requirements  governing
development, manufacturing and sales of pharmaceutical products that vary widely
from country to country. Approval of a drug by applicable regulatory agencies of
foreign  countries  must be secured prior to the marketing of such drug in those
countries.  The  regulatory  approval  process may be more or less rigorous from
country to country and the time  required  for approval may be longer or shorter
than that required in the United States.

     In  addition  to  government  agencies  that  promulgate   regulations  and
guidelines  directly  applicable to the Company and its  products,  professional
societies, practice management groups, and health/science organizations may also
publish, from time to time, guidelines or recommendations to the health care and
patient  communities  that  affect  the  usage of  certain  therapies,  drugs or
procedures, including the Company's products. Such recommendations may relate to
such matters as usage,  dosage,  route of administration  and use of concomitant
therapies  and  could  have a  material  effect  on  the  Company's  results  of
operations.

Manufacturing

     Agouron utilizes world-wide contract manufacturing to produce VIRACEPT. The
Company  procures and transfers raw materials to contracted bulk drug producers,
sends the converted  bulk drug to finishing  facilities and moves finished goods
into a  distribution  center.  Product  supply and associated raw materials have
been  available in sufficient  quantities to meet  business  needs.  In order to
accommodate  anticipated  sales volume growth,  capacity  expansion  efforts are
being

                                       15
<PAGE>


pursued. The Company will be dependent upon its contract manufacturers to comply
with good manufacturing practices and to meet its production requirements. There
can be no  assurance  that the  Company's  contract  manufacturers  will  timely
deliver  sufficient  quantities  of the  Company's  products or that the Company
would be able to find substitute manufacturers, if necessary.

Marketing

     The Company distributes  VIRACEPT in the United States through wholesalers.
Sales  volumes in the United  States are  influenced  by  underlying  demand and
wholesale inventory management practices.

     VIRACEPT  is covered by  Medicaid  programs in all states and is covered by
virtually all state AIDS Drug Assistance Programs ("ADAPs"). Currently, VIRACEPT
is paid for predominately by Medicaid,  private insurance and ADAPs. The Company
offers a patient  assistance  program  based upon  medical need for patients who
have no other means of coverage.
     Outside of North America and parts of Japan, VIRACEPT is marketed on behalf
of the  Company  and JT by Roche.  The  Company  receives  a royalty  on Roche's
world-wide sales of VIRACEPT.

     The  Company's   sales  and  marketing   efforts   utilize  a  field  sales
organization  which focuses primarily on office and  hospital-based  physicians,
including key medical thought  leaders.  Additionally,  the Company has obtained
market  access  and  availability  for its  products  in  part  by  establishing
relationships   within  key  market  segments,   including  health   maintenance
organizations, third-party payers and governmental agencies.

Human Resources

     As of July 28, 1998,  the Company had 991  employees,  of which 619 and 146
employees,  respectively,  were engaged in, or directly supported,  research and
product development and sales and marketing efforts. The Company's employees are
not covered by a collective  bargaining  agreement and the Company considers its
relations  with its  employees  to be  excellent.  The Company has entered  into
confidentiality agreements with all of its employees.

Item 2.       PROPERTIES

     The Company  currently leases  approximately  317,000 square feet of office
and laboratory space in the Torrey Pines and Sorrento Valley areas of San Diego.

     The Company's corporate  headquarters and administrative  offices currently
comprise approximately 118,000 square feet under lease agreements, most of which
expire in calendar 1999.

     Research and development  activities are located in  approximately  197,000
square feet of leased  space under  agreements  which  expire from 1999 to 2004.
These  state-of-the-art  facilities  are designed to  implement  and support the
Company's  innovative  approach to drug design.  Included in the  facilities are
approved scale-up  laboratories in which kilogram quantities of Company-designed
drug compounds are manufactured under current good manufacturing

                                       16
<PAGE>


practices  for  use  in  clinical  trials.  Additionally,   the  Company  leases
approximately  2,000 combined square feet in the United Kingdom and Canada which
is  utilized,  respectively,  by its  European  clinical  development  staff and
Canadian marketing organization.

Item 3.       LEGAL PROCEEDINGS

     The Company is involved in certain legal proceedings  generally  incidental
to its normal  business  activities.  While the outcome of any such  proceedings
cannot be  accurately  predicted,  the Company  does not  believe  the  ultimate
resolution of any such existing matters should have a material adverse effect on
its financial position or results of operations.

Item 4.       SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

     During the fourth  quarter of the year ended June 30, 1998, no matters were
submitted to a vote of the Company's security holders.

                                       17
<PAGE>


                                     PART II


Item 5.       MARKET FOR THE REGISTRANTS' COMMON EQUITY AND RELATED STOCKHOLDER
              MATTERS

     The  Company's  common  stock  trades on The Nasdaq  Stock Market under the
symbol AGPH. There were approximately 30,000 shareholders of the common stock of
the Company as of July 28, 1998.  The Company has not paid cash dividends on its
common stock and does not intend to do so in the foreseeable future.


The  following  table  sets  forth the range of high and low  selling  prices as
reported by The Nasdaq Stock Market for the periods indicated.
<TABLE>
<CAPTION>

                                                                              High              Low
                                                                           ---------        ---------
1997
<S>      <C>                                                                  <C>              <C>

         First Quarter                                                     $  23.125        $  14.500
         Second Quarter                                                       35.750           21.125
         Third Quarter                                                        50.500           33.500
         Fourth Quarter                                                       45.500           29.187

1998

         First Quarter                                                     $  56.500        $  39.250
         Second Quarter                                                       56.500           26.750
         Third Quarter                                                        40.000           29.250
         Fourth Quarter                                                       40.250           28.750
</TABLE>




                                       18
<PAGE>


Item 6.       SELECTED CONSOLIDATED FINANCIAL DATA

     The following table summarizes certain selected consolidated financial data
for each of the five years in the period  ended June 30, 1998.  The  information
presented  should  be  read  in  conjunction  with  the  consolidated  financial
statements included elsewhere in this report.
<TABLE>
<CAPTION>

(In thousands, except
per share amounts)                                      1998         1997         1996         1995         1994
- ----------------------------------------------------------------------------------------------------------------
<S>                                               <C>          <C>          <C>          <C>           <C>

Statement of Income (Loss) Data:
Years ended June 30,
     Total revenues                               $  466,505   $  132,063   $   55,955   $   26,722    $  16,301
     Product sales                                   409,298       56,969            0            0            0
     Research and development expenses(1)            150,657      108,137       71,010       36,317       23,957
     Net income (loss) (1)  and (2)                   13,154      (42,806)     (19,523)     (12,939)      (9,462)
     Net income (loss) per share                  $      .40   $    (1.59)  $     (.99)  $     (.89)   $    (.66)
     Shares used in computing net income
          (loss) per share                            33,214       26,946       19,688       14,592       14,482

Balance Sheet Data:
At June 30,
     Working capital                              $  127,728   $  115,786   $   70,381   $    8,837    $  21,039
     Total assets                                    363,337      266,914      102,577       27,097       37,178
     Long-term liabilities                             6,915        7,217        1,734        1,884        2,285
     Stockholders' equity(3)                         236,169      191,282       75,583       12,591       24,852
</TABLE>

     (1) In 1998, includes in-licensing  expenses of $26,000,000  ($15,600,000
         net of tax) for commercial rights to three development stage anti-HIV
         products.

     (2) In 1997, includes the write-off of $57,500,000 of in-process technology
         associated with the acquisition of Alanex Corporation, partially offset
         by the  realization of  $43,800,000  of deferred tax assets  associated
         with the Company's expectation of future taxable income.

     (3) The Company has never  declared  or paid cash  dividends  on its common
         stock.

                                       19
<PAGE>


Item 7.       MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND 
              RESULTS OF OPERATIONS

Overview

     This discussion contains  forward-looking  statements.  Such statements are
subject to certain risks and  uncertainties  which could cause actual results to
differ  materially  from  those  projected.  See  "Important  Factors  Regarding
Forward-Looking  Statements"  attached as Exhibit 99 to this Form 10-K.  Readers
are cautioned not to place undue  reliance on these  forward-looking  statements
which speak only as of the date hereof.  The Company undertakes no obligation to
publicly release the result of any revisions to these forward-looking statements
which may be made to reflect events or circumstances after the date hereof or to
reflect the occurrence of unanticipated events.

     The Company is committed to the discovery,  development,  manufacturing and
marketing of human  pharmaceuticals  targeting  cancer,  AIDS, and other serious
diseases.  Operations  to date have been  principally  funded from the Company's
equity-derived  working capital,  various  collaborative  arrangements and, most
recently,  from the gross margin contribution of its first product,  VIRACEPT(r)
(nelfinavir mesylate). The net income reported in fiscal 1998 is principally due
to the  commercialization  of VIRACEPT  while the Company's  prior net operating
losses reflect primarily the result of its independent  research and substantial
investment in the clinical and  commercial  development  of VIRACEPT and certain
anti-cancer compounds.

     In March 1997, the Company  received  clearance from the United States Food
and Drug Administration ("FDA") to market VIRACEPT in the United States. For the
fiscal year ended June 30,  1998,  due  principally  to the  increasing  product
contribution  from  VIRACEPT  sales,  license  fees and  royalties,  the Company
realized a net income of $13,154,000.

Results of Operations

Product sales

     Product  sales  for the  fiscal  years  ended  June 30,  1997 and 1998 were
approximately  $57,000,000 and  $409,300,000  which included sales in the United
States of $55,559,000 and $358,321,000,  respectively.  The Company  anticipates
that  VIRACEPT  sales in the United  States  will  approximate  $430,000,000  to
$440,000,000 for fiscal 1999.

Contract revenues

     Collaborative  research and development  agreements with Japan Tobacco Inc.
("JT"), Hoffmann-La Roche Inc. and F. Hoffmann-La Roche Ltd (collectively "HLR")
accounted for  substantially  all of the Company's  contract  revenues for 1998,
1997 and 1996. Total contract revenues for 1998 decreased approximately 40% from
1997 due principally to decreased  VIRACEPT program  spending by Agouron,  which
was partially funded by JT. Additionally,  the amortization to revenue over a 24
month period of JT's $24,000,000 milestone payment, which was received in August
1995, was completed in June 1997. The increase in contract revenues

                                       20
<PAGE>


from 1996 to 1997 of approximately  59% was due principally to increased program
activity and spending on the JT collaborations.

     In December 1997, the Company agreed to end its  collaboration  with HLR in
the field of  cancer.  As a result of the  termination  agreement,  Agouron  has
regained all rights to its anti-cancer  drugs previously within the scope of the
HLR collaboration.

     The  Company  anticipates  that  contract  revenues  for  fiscal  1999 will
approximate $35,000,000 to $40,000,000.

License fees and royalties

     The Company's license fees and royalties for 1998 and 1997 were principally
derived  from F.  Hoffmann-La  Roche Ltd  ("Roche");  license  fees in 1996 were
earned from HLR. Total revenues for 1998 increased  approximately  83% from 1997
due to European marketing  approval for VIRACEPT.  The 33% decrease from 1996 to
1997 is principally due to $9,000,000 for initial European  marketing rights for
VIRACEPT in 1997 versus  $15,000,000 for initial  world-wide  development rights
for two anti-cancer drugs in 1996.

     In January and March 1998,  VIRACEPT was  approved for  marketing in Europe
and Japan,  respectively.  Upon such approvals,  the Company realized as revenue
license  fees  totaling  $12,000,000.  In July 1997,  the Company and JT granted
Roche certain exclusive rights to VIRACEPT in several Asian countries.  For such
rights, the Company received a license fee of $2,000,000.

     Royalty revenues of  approximately  $3,852,000 have been recognized in 1998
based on estimated and actual Roche sales of VIRACEPT in its licensed territory.
The Company  anticipates  that license fees and  royalties  for fiscal 1999 will
range from $30,000,000 to $35,000,000.

Cost of product sales

     The  aggregate  cost of product  sales as a percentage of product sales was
approximately  43% and 42% for 1997 and 1998,  respectively.  Gross  margins  on
United States  commercial sales were  approximately  57% and 65% during 1997 and
1998, respectively.  The Company anticipates that gross margins on United States
commercial  sales will  improve as product  sales  volumes  increase and certain
manufacturing process and scale efficiencies are realized,  and will approximate
71% in 1999.  Aggregate  gross  margins will also be impacted by the size of the
Company's  patient  assistance  program  (which  provides free goods to indigent
individuals), the Company's manufacturing supply arrangement with Roche (whereby
Roche  has  the  right  to  either  purchase  product  at  Agouron's  cost  plus
contractually  determined  mark-ups or manufacture drug product for its own use,
subject to contractually determined fees to be paid to Agouron) and the level of
sales subject to Medicaid and other discounts or rebates in the United States.


                                       21
<PAGE>


Research and development

     Research and development  ("R&D") spending  increased by approximately  39%
from 1997 to 1998 due to license fees for three  development stage HIV products,
increasing  average  R&D  staff  levels  (approximately  28%) and  staff-related
spending  (including  occupancy  and the addition of Alanex since late 1997) and
increased  expenditures for human clinical trial activities  associated with the
clinical  development  of certain of the Company's  anti-cancer  compounds.  R&D
spending  increased  by  approximately  52% from 1996 to 1997 due  generally  to
increasing  average  R&D  staff  levels  (approximately  39%) and  staff-related
expenditures  (including occupancy),  increased expenditures in support of human
clinical  trials,  an expanded  access  program  associated  with  VIRACEPT  and
increased  expenditures for clinical trial activities associated with AG3340 and
other anti-cancer compounds.  The Company anticipates that total R&D expenses in
fiscal 1999,  excluding the impact of any license fees or milestone  expenses in
either 1998 or 1999, will exceed fiscal 1998 expenses by approximately 40%.

Selling, general and administrative

     Selling,   general  and   administrative   ("SG&A")  expenses   represented
approximately  28% of total  operating  expenses  (excluding the cost of product
sales,  royalties and write-off of in-process technology purchased) in 1998, 23%
in 1997 and 10% in 1996. SG&A increased by  approximately  76% from 1997 to 1998
due  principally to a full year of expenses  associated with the sales force and
other marketing personnel. Spending increases from 1996 to 1997 were due chiefly
to increasing staff levels (approximately 214%) and staff-related  expenditures,
certain  premarketing  and advertising  and promotion costs  associated with the
launch of VIRACEPT in March 1997 and other costs associated with a growing sales
and marketing  infrastructure.  The Company anticipates that total SG&A expenses
will increase by  approximately  40% in fiscal 1999 due to increasing  sales and
marketing activities and the support of VIRACEPT phase IV marketing studies.

Royalties

     The Company's  obligation to share VIRACEPT profits with JT is reflected in
royalty  expense  for 1998 and  represents  approximately  19% of United  States
product sales. Royalties in fiscal 1997 were not significant.  It is anticipated
that  royalty  expense  for fiscal  1999 will  approximate  24% to 25% of United
States product sales.

Write-off of in-process technology purchased

     In 1997, the Company  acquired  Alanex,  a research  company engaged in the
discovery of drug leads  through the  high-speed  screening of diverse  chemical
libraries  designed by  computational  methods and  generated  by  combinatorial
chemistry. Alanex was acquired in a purchase transaction through the issuance of
approximately  1,992,000  equivalent shares  (including  548,000 for options and
warrants) of the  Company's  common stock valued at  approximately  $61,000,000,
plus $1,300,000 of related  acquisition  costs. The purchase price was allocated
to various tangible and intangible assets and either capitalized  (approximately
$4,800,000) or expensed  (approximately  $57,500,000)  as in-process  technology
based on an

                                       22
<PAGE>


independent valuation of the Alanex assets, technology and research programs at 
the date of acquisition.

Interest and other income

     Interest  income  increased  by 1%  from  1997  to  1998.  Interest  income
increased by  approximately  23% from 1996 to 1997 due  principally  to a higher
average  investment  portfolio  balance  resulting  from  the July  1996  public
offering, receipt of $15,000,000 and $9,000,000,  respectively,  in license fees
from HLR (June 1996) and Roche (January 1997),  significantly increased contract
funding from JT and HLR and the exercise of employee stock options.  The Company
anticipates that, absent additional  revenue sources or a significant  change in
interest  rates,  fiscal 1999  interest  income will be less than that of fiscal
1998.

Interest expense

     Interest expense increased in 1998 from 1997 due to borrowings under a line
of credit  which  was used to  partially  fund  quarterly  royalties  paid to JT
throughout  the  year.   Interest  expense   decreased  in  1997  from  1996  by
approximately  38%  due  to  a  decreasing  level  of  debt  and  capital  lease
obligations from year to year.

Income tax provision (benefit)

     The income tax  provision  in 1998 has been  computed  using an  effective,
combined  federal  and  state  rate of 40%.  The cash  obligation  of such  1998
provision has been mostly offset by the  utilization of its deferred tax assets.
Based on its 1998 pre-tax  profit and its estimates for future  taxable  income,
the Company  believes it is more  likely than not that its  deferred  tax assets
(comprised mostly of net operating loss carryforwards,  deductions  generated by
the exercise of stock options,  and research  credits) will be realized and has,
therefore,  recorded  the full tax  benefit  of its  deferred  tax  assets.  The
Company's accumulated net deferred tax assets totaled approximately  $55,900,000
and  $64,100,000  at June 30, 1997 and 1998.  The Company  anticipates  that its
effective  income  tax rate for fiscal  1999 will  range  from 10% to 15%.  Such
decrease from fiscal 1998 is attributed to greater expected  availability of R&D
tax credits due to the anticipated  increase in R&D spending and the anticipated
reduction in R&D contract revenues.

Year 2000

     The Year 2000 issue  results from  computer  programs and systems that were
created  to  accept  only  two  digit  dates.  Such  systems  may not be able to
distinguish  20th century  dates from 21st century  dates.  This could result in
miscalculations  and system  failures.  The Company has  established a Year 2000
project  team  that  is  currently   reviewing  computer  systems  and  computer
controlled  equipment that could be affected by this issue. In this process, the
Company  expects to both  replace and  upgrade  certain  systems and  equipment.
Additionally, the Company is in the process of contacting all of its significant
external  business  partners  to  determine  the extent to which the  Company is
vulnerable to their failure to obtain Year 2000 compliance. While the total cost
of  obtaining  Year 2000  compliance  is not  known at this  time,  the  Company
believes such cost will not have a material  effect on the  Company's  business,
financial position, or results

                                       23
<PAGE>


of operation.  However, even though the Company plans to have obtained Year 2000
compliance  prior to the year 2000, the inability of the Company or its business
partners to adequately  address year 2000 issues could have a significant impact
on the Company's business.

Liquidity and Capital Resources

     Prior to fiscal 1998, the Company relied  principally on equity  financings
and corporate collaborations to fund its operations and capital expenditures. In
fiscal 1998,  due  primarily to the  successful  commercialization  of VIRACEPT,
operating  activities  have  provided  $827,000  of  cash  compared  with  using
$73,467,000  in fiscal  1997.  Commercial  sales of  VIRACEPT  for 1997 and 1998
resulted in gross margins of approximately $32,370,000 and $236,654,000.

     At June 30,  1998,  the Company had net  working  capital of  approximately
$127,728,000,  an  increase  of  $11,942,000  over  June  30,  1997  levels  due
principally to the Company's pre-tax profit of $21,924,000.  Individual  working
capital components  significantly  impacted by the commercialization of VIRACEPT
include trade accounts receivable (an increase of $18,416,000),  inventories (an
increase of  $44,906,000),  accounts  payable (an increase of  $15,560,000)  and
accrued  liabilities  (an  increase  of  $26,467,000,  primarily  due to accrued
royalties  payable  to  JT).  It  is  anticipated  that  these  working  capital
components and cash and short-term investments will continue to be significantly
impacted as VIRACEPT  sales  increase.  At June 30, 1998,  the Company had cash,
cash equivalents and short-term  investments of approximately  $87,123,000.  The
Company  believes  that its  current  capital  resources,  existing  contractual
commitments and anticipated  VIRACEPT product sales  contribution are sufficient
to maintain its current  operations through fiscal 1999. This belief is based on
current research and clinical  development  plans,  anticipated  working capital
requirements  associated with the expanding  commercialization of VIRACEPT,  the
current  regulatory   environment,   historical   industry   experience  in  the
development of therapeutic drugs and general economic conditions.

     The Company believes that additional  financing may be required to meet the
planned operating needs after fiscal 1999 if significant and increasing positive
cash flows are not  generated  from  commercial  activities.  Such  needs  would
include the expenditure of substantial funds to continue and expand research and
development  activities,  conduct existing and planned  preclinical  studies and
human clinical trials and to support the increasing working capital requirements
of a  growing  commercial  infrastructure  including  manufacturing,  sales  and
marketing  capabilities.  As a result, the Company anticipates  pursuing various
financing alternatives such as collaborative  arrangements and additional public
offerings or private  placements of  securities.  If such  alternatives  are not
available,  the Company may be required to defer or restrict certain  commercial
activities,  delay  or  eliminate  expenditures  for  certain  of its  potential
products  under  development,  cancel  licenses from third parties or to license
third parties to commercialize  products or technologies  that the Company would
otherwise seek to develop or commercialize itself.

     During fiscal 1998, capital  expenditures totaled $33,086,000 compared with
$14,727,000 and $3,710,000 during 1997 and 1996, of which $1,579,000, $2,355,000
and $457,000  were financed  through  capital  lease  obligations.  Of the total
capital  expenditures  during 1998,  1997 and 1996,  approximately  $14,331,000,
$4,728,000 and $318,000 represented  leasehold improvement costs associated with
certain  of the  Company's  facilities.  With  the  exception  of the  leasehold
improvement costs,  virtually all of the capital  expenditures during 1998, 1997
and 1996

                                       24
<PAGE>


represented  laboratory  and office  equipment  and  scientific  instrumentation
necessary  to  support  an  expanding  research,   development,  and  commercial
infrastructure.   Capital   expenditures   during   1999  are   expected  to  be
approximately  $18,000,000  to  support  continued  product   commercialization,
development and research activities.  Of the total expected capital expenditures
during  1999,   approximately   $4,000,000  is  associated  with  the  leasehold
improvement  of existing  and  anticipated  new  administrative  and  laboratory
facilities.  The  Company  may  utilize  lease  or debt  financing  for  certain
expenditures if available on acceptable terms.

                                       25
<PAGE>


Item 8.       FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

INDEX TO FINANCIAL STATEMENTS AND SCHEDULES                               PAGE
- -------------------------------------------                               ----

Report of Independent Accountants                                          F-1

Consolidated Balance Sheet as of June 30, 1998 and 1997                    F-2

Consolidated Statement of Income (Loss) for the years ended                F-3
           June 30, 1998, 1997 and 1996

Consolidated Statement of Stockholders' Equity for the
           years ended June 30, 1998, 1997 and 1996                        F-4

Consolidated Statement of Cash Flows for the years ended
           June 30, 1998, 1997 and 1996                                    F-5

Notes to Consolidated Financial Statements                                 F-6

NOTE:  All schedules are omitted  because they are not  applicable,  or not
       required,  or because the required  information is included in the
       consolidated financial statements or notes thereto.

                                       26
<PAGE>


                                                   

REPORT OF INDEPENDENT ACCOUNTANTS


To the Board of Directors and Stockholders of Agouron Pharmaceuticals, Inc.

In our opinion,  the  accompanying  consolidated  balance  sheet and the related
consolidated  statements of income (loss),  of stockholders'  equity and of cash
flows  present  fairly,  in all material  respects,  the  financial  position of
Agouron  Pharmaceuticals,  Inc. and its  subsidiaries at June 30, 1998 and 1997,
and the results of their  operations  and their cash flows for each of the three
years in the period ended June 30, 1998, in conformity  with generally  accepted
accounting principles.  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 of these
statements  in accordance  with  generally  accepted  auditing  standards  which
require that we plan and perform an 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,  assessing the  accounting  principles
used and  significant  estimates made by management,  and evaluating the overall
financial  statement  presentation.   We  believe  that  our  audits  provide  a
reasonable basis for the opinion expressed above.



/s/ PricewaterhouseCoopers, LLP

San Diego, California
July 16, 1998





                                      F-1
<PAGE>


AGOURON PHARMACEUTICALS, INC.

CONSOLIDATED BALANCE SHEET
(Dollars in thousands)
<TABLE>
<CAPTION>


                                                                                           June 30,
                                                                                ----------------------------
                                                                                      1998              1997
                                                                                ----------       -----------
ASSETS

Current assets:
<S>                                                                             <C>              <C>

       Cash and cash equivalents                                                $   19,098       $    52,484
       Short-term investments                                                       68,025            38,833
       Accounts receivable, net                                                     51,341            31,375
       Inventories                                                                 103,706            58,800
       Current deferred tax assets                                                     564               500
       Other current assets                                                          5,247             2,209
                                                                                ----------       -----------

       Total current assets                                                        247,981           184,201

Property and equipment, net                                                         47,212            22,613

Deferred tax assets                                                                 64,644            56,000

Purchased intangibles                                                                3,500             4,100
                                                                                ----------       -----------

                                                                                $  363,337       $   266,914
                                                                                ==========       ===========

LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
       Accounts payable                                                         $   44,393       $    28,833
       Accrued liabilities                                                          35,356             8,889
       Deferred revenue and advances                                                23,563            27,567
       Current deferred tax liabilities                                              1,139               600
       Loan payable and current portion of long-term debt                           15,802             2,526
                                                                                ----------       -----------

       Total current liabilities                                                   120,253            68,415
                                                                                ----------       -----------

Long-term liabilities:
       Long-term debt, less current portion                                          5,892             5,940
       Accrued rent                                                                  1,023             1,277
                                                                                ----------       -----------

       Total long-term liabilities                                                   6,915             7,217
                                                                                ----------       -----------

Stockholders' equity:
       Common stock, no par value, 75,000,000 shares authorized,
           31,053,380 and 29,429,920 shares issued and outstanding                 348,482           317,133
       Unrealized gains (losses) on short-term investments                             384                 0
       Accumulated deficit                                                        (112,697)         (125,851)
                                                                                ----------       -----------

       Total stockholders' equity                                                  236,169           191,282
                                                                                ----------       -----------

Commitments
                                                                                $  363,337       $   266,914
                                                                                ==========       ===========
</TABLE>

See accompanying notes to consolidated financial statements.

                                      F-2
<PAGE>


AGOURON PHARMACEUTICALS, INC.

CONSOLIDATED STATEMENT OF INCOME (LOSS)
(In thousands, except per share amounts)
<TABLE>
<CAPTION>

                                                                          Years ended June 30,
                                                              --------------------------------------------
                                                                       1998           1997            1996
                                                              -------------  -------------   -------------

<S>                                                           <C>            <C>             <C> 
Revenues:
     Product sales                                            $     409,298  $      56,969   $           0
     Contracts                                                       38,855         65,094          40,955
     License fees and royalties                                      18,352         10,000          15,000
                                                              -------------  -------------   -------------

                                                                    466,505        132,063          55,955
                                                              -------------  -------------   -------------
Operating expenses:
     Cost of product sales                                          172,644         24,599               0
     Research and development                                       150,657        108,137          71,010
     Selling, general and administrative                             58,012         32,941           8,082
     Royalties                                                       68,423              0               0
     Write-off of in-process technology purchased                         0         57,500               0
                                                              -------------  -------------   -------------

                                                                    449,736        223,177          79,092
                                                              -------------  -------------   -------------

Operating income (loss)                                              16,769        (91,114)        (23,137)
                                                              -------------  -------------   -------------

Other income (expenses):
     Interest and other income                                        5,907          5,873           4,776
     Interest expense                                                  (752)          (142)           (228)
                                                              -------------  -------------   -------------

                                                                      5,155          5,731           4,548
                                                              -------------  -------------   -------------

Income (loss) before income taxes                                    21,924        (85,383)        (18,589)

Income tax provision (benefit)                                        8,770        (42,577)            934
                                                              -------------  -------------   -------------

Net income (loss)                                             $      13,154  $     (42,806)  $     (19,523)
                                                              =============  =============   =============

Earnings per share:
     Basic                                                    $         .43  $       (1.59)  $        (.99)
                                                              =============  =============   =============
     Diluted                                                  $         .40  $       (1.59)  $        (.99)
                                                              =============  ==============  =============

Shares used in calculation of:
     Basic                                                           30,571         26,946          19,688
     Diluted                                                         33,214         26,946          19,688
</TABLE>





See accompanying notes to consolidated financial statements.



                                      F-3
<PAGE>


AGOURON PHARMACEUTICALS, INC.

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY
(Dollars in thousands)
<TABLE>
<CAPTION>


                                                                       Unrealized
                                                                          gains
                                                                       (losses) on
                                                 Common Stock          short-term     Accumulated
                                             Shares         Amount     investments        Deficit          Total
                                         ----------    -----------     -----------    -----------    -----------
<S>                                      <C>           <C>             <C>            <C>            <C>

Balance at June 30, 1995                 14,718,564    $    76,113     $         0    $   (63,522)   $    12,591

   Stock issuances:
     Public sale                          6,000,000         78,579                             --         78,579
     Exercise of stock options              586,412          2,990                             --          2,990
     Exercise of stock warrants              90,000            283                             --            283
     Employee stock purchase plan            68,398            663                             --            663
   Net loss                                      --             --                        (19,523)       (19,523)
                                        -----------    -----------     -----------    -----------    -----------

Balance at June 30, 1996                 21,463,374        158,628               0        (83,045)        75,583

   Stock issuances:
     Public sale                          5,470,000         77,245                             --         77,245
     Acquisition of Alanex                1,444,236         61,051                             --         61,051
     Exercise of stock options              980,472          6,720                             --          6,720
     Employee stock purchase plan            71,838          1,389                             --          1,389
   Tax benefit of stock options exercised              --              12,100                        --
12,100
   Net loss                                      --             --                        (42,806)       (42,806)
                                        -----------    -----------     -----------    -----------    -----------

Balance at June 30, 1997                 29,429,920        317,133               0       (125,851)       191,282

Stock issuances:
     Exercise of stock options            1,344,104         11,031                             --         11,031
     Exercise of stock warrants             169,522            680                             --            680
     Employee stock purchase plan           109,834          2,742                             --          2,742
   Tax benefit of stock options exercised              --              16,896                        --
16,896
   Change in unrealized gains (losses) on
     short-term investments                                                    384                           384
   Net income                                    --             --                         13,154         13,154
                                        -----------    -----------     -----------    -----------    -----------

Balance at June 30, 1998                 31,053,380    $   348,482     $       384    $  (112,697)   $   236,169
                                        ===========    ===========     ===========    ===========    ===========
</TABLE>



See accompanying notes to consolidated financial statements.


                                      F-4
<PAGE>


AGOURON PHARMACEUTICALS, INC.

CONSOLIDATED STATEMENT OF CASH FLOWS
(In thousands)
<TABLE>
<CAPTION>

                                                                                   Years ended June 30,
                                                                       -----------------------------------------
                                                                              1998           1997           1996
                                                                       -----------    -----------    -----------

Cash flows from operating activities:
<S>                                                                    <C>            <C>            <C>        
     Cash received from product sales, contracts and licenses          $   442,484    $   116,692    $    61,376
     Cash paid to suppliers, employees and service providers              (446,863)      (195,890)       (73,738)
     Interest received                                                       5,958          5,873          4,776
     Interest paid                                                            (752)          (142)          (228)
                                                                       -----------    -----------    -----------

     Net cash provided (used) by operating activities                          827        (73,467)        (7,814)
                                                                       -----------    -----------    -----------

Cash flows from investing activities:
     Proceeds from maturities/sales of short-term investments              147,292        127,501         59,686
     Purchases of short-term investments                                  (176,100)       (91,227)      (118,224)
     Purchase of  property and equipment                                   (31,507)       (12,372)        (3,252)
     Cost to acquire Alanex, net of cash acquired                                0            608              0
                                                                       -----------    -----------    -----------

     Net cash provided (used) by investing activities                      (60,315)        24,510        (61,790)
                                                                       -----------    -----------    -----------

Cash flows from financing activities:
     Net proceeds from issuance of common stock                             14,453         85,354         82,515
     Proceeds from credit line                                              53,600              0              0
     Principal payments on credit line, long-term debt,
       and capital leases                                                  (41,951)          (364)          (818)
                                                                       -----------    -----------    -----------

     Net cash provided (used) by financing activities                       26,102         84,990         81,697
                                                                       -----------    -----------    -----------

Net increase (decrease) in cash and cash equivalents                       (33,386)        36,033         12,093
Cash and cash equivalents at beginning of year                              52,484         16,451          4,358
                                                                       -----------    -----------    -----------

Cash and cash equivalents at end of year                               $    19,098    $    52,484    $    16,451
                                                                       ===========    ===========    ===========

Reconciliation of net loss to net cash provided (used)
 by operating activities:
     Net income (loss)                                                 $    13,154    $   (42,806)   $   (19,523)
     Depreciation and amortization                                           9,087          3,910          2,411
     Write-off of in-process technology purchased                                0         57,500              0
     Provision (benefit) for deferred income taxes                           8,727        (43,800)             0
     Net (increase) decrease in inventories                                (44,906)       (58,547)             0
     Net (increase) decrease in accounts receivable and other
       current assets                                                      (23,004)       (28,209)        (1,198)
     Net increase (decrease) in accounts payable, accrued
       liabilities, deferred revenue and advances, and other liabilities    37,769         38,485         10,496
                                                                        ----------     ----------    -----------


Net cash provided (used) by operating activities                       $       827    $   (73,467)   $    (7,814)
                                                                       ===========    ===========    ===========
</TABLE>

See accompanying notes to consolidated financial statements.

                                      F-5
<PAGE>


AGOURON PHARMACEUTICALS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


Note 1 - The Company and its significant accounting policies

The Company

Agouron  Pharmaceuticals,  Inc.  ("Agouron" or the  "Company") was organized and
incorporated in California in June 1984. Agouron is an integrated pharmaceutical
company committed to the discovery, development,  manufacturing and marketing of
innovative therapeutic products engineered to inactivate proteins which play key
roles in cancer, AIDS and other serious diseases.  The Company,  through its own
sales and marketing  organization,  is currently  marketing in the United States
its  first  drug,  VIRACEPT(r)   (nelfinavir  mesylate)  for  treatment  of  HIV
infection.  The Company is also conducting  pivotal phase II/III clinical trials
for AG3340 for treatment of lung and prostate  cancer.  In addition,  Agouron is
expected  to  initiate  a phase  II/III  pivotal  clinical  trial  of  REMUN(tm)
(AG1661),  an immune-based  therapeutic agent for treatment of HIV infection and
AIDS being co-developed by Agouron and The Immune Response  Corporation ("IRC").
Further,  the Company has a number of programs  in  progress  for  discovery  or
development of other new drugs in the fields of cancer,  viral disease and other
serious diseases.  The Company is also using the proprietary core drug discovery
technology of Alanex Corporation  ("Alanex"),  a wholly-owned  subsidiary of the
Company,  to  accelerate  the steps  necessary to discover  small-molecule  drug
candidates,  from the initial  identification of compounds that exhibit activity
against  selected  biological  targets to the  progression of these compounds to
drug candidates for human clinical trials.

Principles of consolidation

     The consolidated  financial  statements include the accounts of the Company
and its wholly-owned  subsidiaries.  All significant  intercompany  accounts and
transactions have been eliminated.

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,  liabilities,  revenues
and expenses and related disclosures as of the date of the financial statements.
Actual results could differ from such estimates.

Cash and cash equivalents

     The Company  considers cash equivalents to be only those  investments which
are highly liquid,  readily  convertible to cash and which mature within 90 days
from date of purchase.


                                      F-6
<PAGE>


Short-term investments

     Short-term  investments  consist  principally  of  government or government
agency securities,  corporate notes and bonds, commercial paper and certificates
of deposit with original maturities of three to thirty-six months, and corporate
equity  securities.  The Company has classified  its  short-term  investments as
available-for-sale. Included in short-term investments at June 30, 1998 and 1997
is $1,262,000 and $588,000 of accrued interest receivable.

Inventories

     Inventories  are stated at the lower of cost or market.  Cost is determined
using the first-in, first-out method.

Concentration of credit and market risk

     The Company  invests its excess cash  principally in marketable  securities
from a diversified  portfolio of institutions with strong credit ratings and, by
policy,  limits  the amount of credit  exposure  at any one  institution.  These
investments  are generally not  collateralized  and primarily  mature within one
year. The Company has not realized any material losses from such  investments in
1998, 1997 or 1996.

Financial instruments and risk management

     The  Company  has  contract  manufacturing  operations  in Europe and Asia.
Accordingly,  the Company from  time-to-time  enters into  forward  contracts to
manage its exposure to fluctuations in foreign currency  exchange rates. At June
30, 1998, the Company had several forward contracts with maturities of less than
six  months  to  purchase  Japanese  Yen  for  approximately  $9,426,000.  These
contracts are  designated  and effective as hedges and,  accordingly,  gains and
losses are  recognized  in the same  period the  offsetting  gains and losses of
hedged transactions are realized and recognized.

Property and equipment

     Property and equipment is recorded at cost.  Depreciation is computed using
principally  the  straight-line  method over estimated  useful lives of three to
five years. Leasehold improvements are amortized over the life of the lease.

Purchased intangibles

     In  conjunction  with the 1997  acquisition  of  Alanex,  the  Company  has
recorded purchased intangibles (primarily drug discovery technology and chemical
compound  libraries)  which are being  amortized on a  straight-line  basis over
their estimated useful lives of seven years.

Deferred revenue and advances

     Approximately  $22,414,000 of cash received from JT has been  classified as
deferred  contract revenue and advances.  Approximately  $21,452,000 of the cash
received from JT represents JT's

                                      F-7
<PAGE>


advance of the  Company's  VIRACEPT  development  funding  obligation  which was
completed  in March  1998.  Such  amounts are to be repaid by the Company out of
future profits, if any, generated by sales of VIRACEPT in the United States. The
balance of the payments from JT are  non-refundable  and are being recognized as
contract  revenue on a  prospective  basis  generally as  collaborative  program
expenses are incurred.

Product sales

     The Company ships VIRACEPT to wholesalers  throughout the United States and
recognizes  sales  revenue upon  shipment.  Sales are reported net of discounts,
rebates, chargebacks and product returns.

     Also  included  in  product  sales  for 1998  and  1997  are  approximately
$50,979,000  and  $1,441,000  of sales  (at cost plus  contractually  determined
mark-ups) to Roche of clinical and commercial  drug supplies to be used by Roche
in its licensed territory.  The Company receives a royalty on Roche's subsequent
commercial sales of such drug supplies.

Contract revenues

     Contract revenues are earned and recognized  generally as contract research
costs are incurred  according to the  provisions of each  underlying  agreement.
Amounts  received in advance of  performance  are recorded as deferred  revenue.
Contract  milestone  payments are  recognized as revenues upon the completion of
the milestone event or requirement.

License fees and royalties

     License fees are  recognized as revenue when earned as generally  evidenced
by  certain  factors  including:  receipt  of  such  fees,  satisfaction  of any
performance obligations and the non-refundable nature of such fees.

     Royalty  revenues are  recognized  based on  estimated  and actual sales of
licensed products in licensed territories.

Research and development costs

     Research and development costs are expensed in the period incurred.

Income tax provision (benefit)

     The  Company  records a  provision  (benefit)  for income  taxes  using the
liability method.  Current income tax expense (benefit)  generally is the amount
of income taxes expected to be payable for the current year.  Deferred taxes are
recorded by applying  applicable tax rates to cumulative  temporary  differences
based on when and how they are expected to affect the tax return.


                                      F-8
<PAGE>


Earnings (loss) per share

     The Company  computes  earnings per share in accordance  with  Statement of
Financial  Accounting  Standards  No. 128  "Earnings  Per Share" Basic  earnings
(loss)  per share is based upon the  weighted  average  number of common  shares
outstanding during a period. Diluted earnings (loss) per share is based upon the
weighted  average number of common shares  outstanding and dilutive common stock
equivalents  during a period.  Common stock  equivalents  are options  under the
Company's  stock  option  plans  which are  included in the  earnings  per share
computation  under the treasury  stock method and common  shares  expected to be
issued under the Company's employee stock purchase plan.

     Common stock  equivalents of  approximately  2,643,000 shares for 1998 were
used to calculate  diluted earnings per share.  For 1997 and 1996,  common stock
equivalents  of  approximately  3,168,000 and 2,014,000  shares were not used to
calculate  diluted  earnings  (loss) per share  because  of their  anti-dilutive
effect.  There are no reconciling  items in calculating  the numerator for basic
and diluted earnings (loss) per share for any of the periods presented.

Stock-based compensation plans

     The Company measures compensation expense for its stock-based  compensation
plans using the  intrinsic  method and  provides  pro-forma  disclosures  of net
income and earnings (loss) per share as if the fair value-based  method had been
applied in measuring compensation expense.

Statement of cash flows

     For purposes of the Statement of Cash Flows,  cash  equivalents  are highly
liquid  investments  purchased with an original maturity of ninety days or less.
Non-cash financing and investing  activities are comprised  primarily of capital
lease obligations of $1,579,000, $2,355,000 and $457,000 for 1998, 1997 and 1996
and the acquisition of Alanex in 1997.

New accounting standards

     In June 1997, the Financial  Accounting  Standards  Board  ("FASB")  issued
Statement  of  Financial  Accounting  Standards  No. 130 ("FAS 130")  "Reporting
Comprehensive  Income,"  which  requires  additional  disclosures  to be adopted
beginning with the quarter ending September 30, 1998. Under FAS 130, the Company
will be required to display  comprehensive  income and its components as part of
the Company's complete set of financial statements.

     In June 1997, the FASB also issued FAS 131,  "Disclosures about Segments of
an Enterprise and Related Information," which requires additional disclosures to
be adopted on June 30, 1999. FAS 131 requires that the Company report  financial
and descriptive information about its reportable operating segments. The Company
is evaluating the impact on its disclosures, if any.


                                      F-9
<PAGE>


Note 2 -  Short-term investments

     The cost of the  Company's  investment  portfolio  by type of security  and
contractual maturity in the balance sheet is as follows:
<TABLE>
<CAPTION>

                                                                                       June 30,
                                                                      ----------------------------------
                                                                                1998                1997
                                                                      --------------      --------------

              <S>                                                      <C>                <C>
              (Dollars in thousands)

              Type of security:
                  Corporate debt                                       $      46,023      $       24,401
                  U.S. Treasury and agencies                                  10,766              11,994
                  Other interest-bearing                                       9,462               2,438
                  Corporate equity                                             1,774                   0
                                                                       -------------      --------------

                                                                       $      68,025      $       38,833
                                                                       =============      ==============

              Contractual maturity:
                  Maturing in less than twelve months                  $      41,389      $       35,827
                  Maturing between twelve and
                      thirty-two months                                       26,636               3,006
                                                                       -------------      --------------

                                                                       $      68,025      $       38,833
                                                                       =============      ==============
</TABLE>

     The  cost  of  securities   sold,  if  any,  is  based  upon  the  specific
identification  method.  The net unrealized  holding gain on  available-for-sale
securities included as a separate component of stockholders'  equity at June 30,
1998 totaled $384,000. There were no material unrealized gains or losses nor any
material  differences  between the estimated fair values and costs of securities
in the investment  portfolio at June 30, 1997.  Realized gains and losses on the
disposal  of  available-for-sale  securities  during  1998  totaled  $20,000 and
$2,000,  respectively.  During  1997 such gains and losses  totaled  $12,000 and
$4,000, respectively. During 1996, such gains totaled $22,000.


                                      F-10
<PAGE>


Note 3 - Composition of certain financial statement captions
<TABLE>
<CAPTION>

                                                                                         June 30,
                                                                                --------------------------
                                                                                      1998            1997
                                                                                ----------     -----------
(Dollars in thousands)

<S>                                                                             <C>            <C>
Accounts receivable, net:
     Trade                                                                      $   44,471     $    26,055
     Contract                                                                        2,451           4,668
     Royalties                                                                       2,339               0
     Employee                                                                          252             269
     Other                                                                           1,828             383
                                                                                ----------     -----------

                                                                                $   51,341     $    31,375
                                                                                ==========     ===========

Inventories:
     Raw materials and work in process                                          $   95,517     $    57,883
     Finished goods                                                                  8,189             917
                                                                                ----------     -----------

                                                                                $  103,706     $    58,800
                                                                                ==========     ===========

Property and equipment, net:
     Scientific instrumentation                                                 $   26,869     $    16,614
     Leasehold improvements                                                         25,135          10,804
     Computer equipment                                                             15,619           8,892
     Furniture and fixtures                                                          3,910           2,464
                                                                                ----------     -----------

                                                                                    71,533          38,774
     Less accumulated depreciation and amortization                                (24,321)        (16,161)
                                                                                ----------     -----------

                                                                                $   47,212     $    22,613
                                                                                ==========     ===========

Accrued liabilities:
     Royalties                                                                  $   21,410     $         0
     License fees                                                                    6,000               0
     Vacation                                                                        2,955           1,932
     Clinical studies                                                                2,731           3,578
     Other                                                                           2,260           3,379
                                                                                ----------     -----------

                                                                                $   35,356     $     8,889
                                                                                ==========     ===========
</TABLE>

                                      F-11
<PAGE>


Note 4 - Significant contract arrangements

Japan Tobacco Inc.

     In February 1994, the Company entered into a strategic  alliance with JT in
the  field of  anti-viral  drugs  for the  treatment  of  infections  caused  by
hepatitis C and the herpes  family of viruses.  In  December  1994,  the Company
added its anti-HIV drug, VIRACEPT, to the JT collaboration with the execution of
a world-wide  development and licensing agreement.  Agouron and JT share equally
the costs of further development of VIRACEPT.

     Currently,  Agouron has exclusive  commercial  rights to VIRACEPT (with the
right to sublicense) in North America and JT has exclusive  commercial rights to
VIRACEPT (with the right to  sublicense)  in parts of Japan.  The Company and JT
share profits and/or royalties equally from the world-wide  commercialization of
VIRACEPT.

     Under the  combined  terms of the JT  agreements,  the Company has incurred
costs of $51,898,000,  $71,825,000 and $46,969,000 and recognized  corresponding
contract  revenues of  $17,359,000,  $48,886,000  and  $37,197,000 for the years
ended June 30, 1998, 1997 and 1996.

Roche

     The Company and JT have granted Roche  certain  exclusive  royalty  bearing
marketing  rights to VIRACEPT  outside of North America and parts of Japan.  For
such  rights,  the Company has  received  (and  recognized  as revenue)  initial
license fees and  additional  product  approval  license fees.  The Company also
receives  royalties  based  either on Roche's  sales of VIRACEPT  or, in certain
circumstances,  Invirase(r) and Fortavase(r) (saquinavir),  Roche's HIV protease
inhibitors.  VIRACEPT license fees and royalties from Roche totaled  $17,852,000
and $9,000,000 for the years ended June 30, 1998 and 1997.

HLR

     In June 1996,  Agouron  granted HLR  world-wide  development  rights in two
anti-cancer   drugs  and  agreed  to  collaborate  with  HLR  on  an  additional
early-stage  anti-cancer drug discovery program.  In return for such rights, HLR
paid  $15,000,000  in  initial  license  fees and  agreed to bear 80% of certain
future  development  costs and to provide annual research support to the Company
of $3,000,000.  In December 1997, Agouron and HLR agreed to end this anti-cancer
research and development collaboration.  The Company has regained all commercial
rights  to  the   anti-cancer   drugs   previously   within  the  scope  of  the
collaboration.

     Under  the terms of the  anti-cancer  agreements  with HLR which  have been
terminated,  the Company  incurred  costs of  $23,486,000  and  $17,854,000  and
recognized  corresponding  contract  revenues of $15,428,000 and $14,270,000 for
the years ended June 30, 1998 and 1997.

The Immune Response Corporation

     In June 1998, the Company  entered into a binding letter of intent with IRC
to  collaborate  on  final  development  and  commercialization  of  REMUNE,  an
immune-based therapeutic agent
                                      F-12
<PAGE>


discovered  by IRC  and  currently  the  subject  of  several  clinical  studies
including a large phase III clinical  trial.  The two companies  intend to enter
promptly into a definitive  agreement and will endeavor to complete  development
and registration of REMUNE in 1999. IRC will manufacture  commercial supplies of
REMUNE,  and  Agouron  will have  exclusive  rights  to  market  REMUNE in North
America,  Europe and  certain  other  countries.  The two  companies  will share
equally  all  profits  from the  commercialization  of  REMUNE  in the  licensed
territory.  Agouron paid an initial  $10,000,000 license fee to IRC in June 1998
and also purchased 118,256 newly issued common shares of IRC for $2,000,000. The
Company's  development  funding  obligation  commences  October  15,  1998  and,
assuming ongoing  successful  development,  registration and approval of REMUNE,
the Company  may pay to IRC up to  $53,000,000  in  additional  development  and
milestone payments and $12,000,000 in purchases of additional IRC common stock.

Shionogi & Co., Ltd.

     In June 1998,  the  Company  entered  into a binding  letter of intent with
Shionogi  & Co.,  Ltd.  ("Shionogi")  to develop  and  commercialize  AG1549,  a
second-generation  non-nucleoside reverse transcriptase  inhibitor ("NNRTI") for
the treatment of HIV infection.  Discovered by Shionogi, AG1549 is currently the
subject of several  clinical trials  evaluating its dose and its concomitant use
with other antiretroviral treatments.

     Agouron  has   exclusive   world-wide   rights  to  the   development   and
commercialization  of AG1549  except in Japan,  South Korea and Taiwan.  Agouron
paid an initial  $10,000,000 license fee in June 1998. Agouron may pay, assuming
ongoing successful development,  registration and approval of AG1776, additional
license  fees of up to  $30,000,000.  In  addition,  Agouron  will pay  Shionogi
royalties based on sales, if any, of AG1549.

Japan Energy Corporation

     In June 1998,  the Company  entered  into an  agreement  with Japan  Energy
Corporation  ("JE")  to  develop  and  commercialize  AG1776,  a novel  protease
inhibitor for the treatment of HIV infection.  Agouron has exclusive  world-wide
rights to the development and commercialization of AG1776 except in Japan, South
Korea,  North Korea and Taiwan;  JE will  manufacture  bulk  compound for use in
final drug product.  Agouron incurred an initial  $6,000,000 license fee in June
1998. Agouron may pay, assuming ongoing successful development, registration and
approval of AG1776,  additional license fees of up to $20,000,000.  In addition,
Agouron will pay JE royalties based on sales, if any, of AG1776.


                                      F-13
<PAGE>


Note 5 - Long-term debt

     Long-term debt and capital lease obligations are as follows:
<TABLE>
<CAPTION>

                                                                                        June 30,
                                                                         -------------------------------
                                                                           
                                                                                  1998              1997
                                                                         -------------    --------------
(Dollars in thousands)

<S>                                                                      <C>              <C>
Notespayable,  secured  with  personal  property and a
     certificate  of deposit; interest at CD rate plus 1.5%,
     paid off in June 1998.                                              $           0    $          142

Capital leases with interest rates between 5.86% and 16.5%,
     maturing at various dates through June 2003.                                3,214             2,462

Line of credit, $20,000,000 secured; interest at bank reference
      rate or LIBOR plus 1.5%, expiring September 30, 1998.                     15,000                 0

Unsecured,  non-interest  bearing,  term  obligation;
     face value of $4,500,000; discounted  to an  8.95%
     effective  rate,  includes  imputed  interest  of $548,000
     due June 28, 2001.                                                          3,480             3,194

Term obligation for tenant improvements, interest
     at 11% per annum, payable in monthly installments,
     paid off in October 1997.                                                       0             2,668
                                                                         -------------    --------------

Total long-term debt and capital lease obligations                              21,694             8,466

Current portion                                                                (15,802)           (2,526)
                                                                         -------------    --------------

                                                                         $       5,892    $        5,940
                                                                         =============    ==============
</TABLE>

     Maturities of long-term debt,  excluding  capital  leases,  are as follows:
1999 - $15,000,000;  2000- $0; and 2001 - $4,500,000,  less imputed  interest of
$1,020,000.

                                      F-14
<PAGE>


Note 6 - Income taxes

(Dollars in thousands)

     The components of the provision (benefit) for income taxes are as follows:
<TABLE>
<CAPTION>

                                                          1998         1997         1996
                                                     ---------    ---------     --------
          <S>                                        <C>          <C>           <C>
          Year ended June 30,
          Current:
              Federal                                $       0    $       0     $      0
              State                                         43            1            1
              Foreign                                        0        1,222          933
                                                     ---------    ---------     --------
                                                            43        1,223          934
                                                     ---------    ---------     --------

          Deferred:
              Federal                                    8,495      (37,800)           0
              State                                        232       (6,000)           0
              Foreign                                        0            0            0
                                                     ---------    ---------     --------
                                                         8,727      (43,800)           0
                                                     ---------    ---------     --------

                                                     $   8,770    $ (42,577)    $    934
                                                     =========    =========     ========
</TABLE>

     The income tax  reconciliation  from  income  (loss)  before  income  taxes
computed at the federal  statutory rate (34%) to the Company's actual income tax
provision is as follows:
<TABLE>
<CAPTION>

          Year ended June 30,                             1998         1997         1996
                                                     ---------    ---------     --------
          <S>                                        <C>          <C>           <C>      
          Tax at U.S. federal statutory rate         $   7,454    $ (29,030)    $ (6,320)
          State taxes, net of federal benefit              181            1            1
          Foreign taxes                                      0        1,222          933
          Purchase accounting book/ tax basis
            differences                                      0       19,781            0
          Change in valuation allowance                      0      (42,449)       6,245
          Other                                          1,135          415           75
          Adjustments to carryover amounts                   0        7,483            0
                                                     ---------    ---------     --------
                                                     $   8,770    $ (42,577)    $    934
                                                     =========    =========     ========
</TABLE>

     The Company's deferred tax assets and liabilities are as follows:


                                                             June 30
                                                     ----------------------
                                                          1998         1997
                                                     ---------    ---------
          Book and tax depreciation/amortization
            differences                              $   5,891    $     831
          Accrued liabilities                            1,951        1,363
          Net operating loss carryforwards              51,281       49,348
          Tax credits                                    6,956        5,676
          Other                                         (2,010)      (1,318)
                                                     ---------    ---------
                                                        64,069       55,900
          Valuation allowance                                0            0
                                                     ---------    ---------
          Deferred taxes, net                        $  64,069    $  55,900
                                                     =========    =========

     The Company has not recorded  current  provisions for United States federal
income taxes due to net operating losses for tax reporting purposes. At June 30,
1998, the Company had net operating loss carryforwards for federal tax reporting
purposes  of  approximately  $150,000,000  expiring  from 2000 to 2013.  The net
operating  loss  includes  the tax  benefit  related  to the  exercise  of stock
options, which benefit was recorded to common stock. The Company also has
 
                                     F-15
<PAGE>


federal   research  and  development   credit   carryforwards  of  approximately
$4,800,000  at June 30,  1998.  The future  utilization  of net  operating  loss
carryforwards for federal income tax purposes may be impacted by the issuance of
additional equity securities.

     Due to California's  partial conformity with federal  provisions  regarding
net operating loss and research and development credit  carryforwards,  and as a
result of the Company's use of certain state tax planning strategies,  for state
tax reporting  purposes at June 30, 1998,  the Company has no net operating loss
carryforwards  and  has  research  and  development   credit   carryforwards  of
approximately $2,200,000. Such credits do not expire.

     Based on its 1998  operating  results and its  estimates of future  taxable
income,  the Company  believes that it is more likely than not that its deferred
tax assets  (comprised  mostly of net operating loss  carryforwards and research
credits) will be realized and has therefore recorded the full tax benefit of its
deferred tax assets as of June 30, 1998.

     Foreign tax expense  represents  certain  withholding taxes associated with
collaboration payments from JT.


                                      F-16
<PAGE>


Note 7 -  Stockholders' equity

Stock Options

     The Company's stock option plans, as amended, are administered by the Board
of Directors or its designees and provide  generally  that, for incentive  stock
options,  the exercise price shall not be less than the fair market value of the
shares at the date of grant and, for certain  non-qualified  stock options,  the
price shall not be less than 85% of the fair  market  value of the shares at the
date of  grant  and  others  may be at any  price  determined  by the  Board  of
Directors.  The  options  expire  not later  than ten years from the date of the
grant and generally become exercisable  ratably over a three or four year period
beginning one year from the grant date. In February 1998, the Board of Directors
adopted  the most  recent  plan  and  reserved  1,000,000  shares  for  issuance
thereunder.  At June 30, 1998, the Company had 1,898,556  shares of common stock
available  for future grant under its stock option plans.  The  following  table
summarizes stock option activity for 1996 through 1998:
<TABLE>
<CAPTION>
                                                                              Shares                Prices
                                                                       -------------     -----------------

<S>                                                                    <C>               <C>        <C>   
           Outstanding June 30, 1995                                       5,171,384     $  .24-    $12.25
                Options granted                                            2,324,950      11.78-     23.00
                Options exercised                                           (586,412)      2.70-      9.19
                Options canceled                                             (81,208)      3.94-     19.57
                                                                       -------------

           Outstanding June 30, 1996                                       6,828,714       2.70-     23.00

                Alanex options assumed                                       378,084        .27-      3.98
                Options granted                                            2,798,500      15.19-     47.13
                Options exercised                                           (980,472)       .27-     22.19
           Options canceled                                                 (205,536)      4.32-     36.35
                                                                       -------------

           Outstanding June 30, 1997                                       8,819,290        .27-     47.13

                Options granted                                            1,115,394      28.00-     55.13
           Options exercised                                              (1,344,104)       .27-     34.82
           Options canceled                                                 (169,312)       .27-     55.13
                                                                       -------------

           Outstanding June 30, 1998                                       8,421,268     $  .27-    $55.13
                                                                       =============
</TABLE>

                                      F-17
<PAGE>


     The following  table  summarizes  information  concerning  outstanding  and
exercisable options as of June 30, 1998:
<TABLE>
<CAPTION>

                                                 Options Outstanding                      Options Exercisable
                                -------------------------------------------------     --------------------------
                                   Number           Weighted         Weighted            Number         Weighted
                                 Outstanding         Average          Average          Exercisable       Average
          Ranges of Exercise        as of           Remaining        Exercise             as of         Exercise
          Prices                June 30, 1998     Life (years)         Price          June 30, 1998       Price
                                -------------    --------------   ---------------     -------------   ----------
 
          <S>                  <C>               <C>              <C>               <C>              <C>          
          Less than $20.00         3,601,287               6.14   $         8.70        2,810,426    $        7.47
          $20.00 to $40.00         3,276,381               8.25            27.18        1,149,617            23.74
          Greater than $40.00      1,543,600               8.99            42.56          370,058            41.26
                               -------------     --------------   --------------    -------------    -------------
                                   8,421,268               7.48   $        22.10        4,330,101    $       14.68
                               =============     ==============   ==============    =============    =============
</TABLE>

     The Company  applies APB  Opinion  No. 25 and  related  Interpretations  in
accounting  for  its  plans.  Accordingly,  no  compensation  expense  has  been
recognized  for  its  stock  option  plans.  Had  compensation  expense  for the
Company's  stock option plans been  determined  based upon the fair value method
prescribed  under  FAS 123,  the  Company's  reported  results  would  have been
impacted as follows:
<TABLE>
<CAPTION>

(In thousands, except per share amounts)                   1998          1997           1996
                                                      ---------      --------      ---------

                  <S>                                 <C>           <C>             <C>
                  Net income (loss)
                    As reported                       $ 13,154      $(42,806)       $(19,523)
                    Compensation expense:
                      Stock options                    (19,891)       (9,496)         (1,133)
                      Employee stock purchase plan      (1,441)         (394)           (204)
                                                      --------       -------        --------
                    Pro-forma                         $ (8,178)     $(52,696)       $(20,860)
                                                      ========      ========        ========

                  Pro-forma earnings (loss) per share:
                    Basic                             $   (.27)      $ (1.96)       $  (1.06)
                    Diluted                           $   (.27)      $ (1.96)       $  (1.06)
</TABLE>

     The  weighted-average  fair value of each option  grant is estimated on the
date of grant using the Black  Scholes  option-pricing  model with the following
weighted-average  assumptions  used  for  1998,  1997  and  1996,  respectively:
expected volatility of 50% each year;  risk-free interest rate of 5.7%, 6.1% and
6.1%;  an  average  expected  life of 3  years,  4  years  and 4  years;  and no
dividends.  The weighted average fair value of stock option grants was $16.57 in
1998, $15.25 per share in 1997 and $8.97 per share in 1996.

     In connection with its 1997 acquisition of Alanex,  the Company assumed all
of the issued and  outstanding  options of Alanex  which  resulted in options to
purchase  an  aggregate  of  378,084  shares of the  Company's  common  stock at
exercise prices ranging from $.27 to $3.98 per share.

Employee Stock Purchase Plan

     The Company  has a stock  purchase  plan in which  eligible  employees  may
purchase  shares of the Company's  common stock through  payroll  deductions.  A
total of 500,000  shares of common stock have been  reserved for issuance  under
the plan,  of which  131,156  shares  remain  available for purchase at June 30,
1998. Funds deducted from participating employees' salaries are used to purchase
common stock at prices equal to 85% of the fair market value of the common stock
on either  the first or last day of a  purchase  period.  During  1998,  109,834
shares were issued at a

                                      F-18
<PAGE>


price of $24.97 per share.  During 1997,  9,730 shares were issued at a price of
$14.29 per share,  47,036  shares were issued at a price of $17.37 per share and
15,072  shares were issued at a price of $28.69 per share.  During 1996,  12,262
shares were issued at a price of $4.94 per share, 46,480 shares were issued at a
price of $9.99 per share and 9,656  shares  were issued at a price of $14.29 per
share.

     Under FAS 123,  pro-forma  compensation  expense equal to the fair value of
the purchase rights granted under the employee stock purchase plan was estimated
using the Black-Scholes model with the following  assumptions for 1998, 1997 and
1996:  an  expected  life of one year;  expected  volatility  of 50  percent;  a
risk-free interest rate of 5.6 percent;  and no dividends.  The weighted-average
fair value of purchase  rights  granted was $13.12 per share in 1998,  $5.96 per
share in 1997 and $3.47 per share in 1996.

Warrants

     In connection with its 1997  acquisition of Alanex,  the Company assumed an
issued and outstanding warrant to purchase Alanex common stock. Accordingly,  at
June 30,  1997,  a warrant to purchase  an  aggregate  of 169,522  shares of the
Company's  common stock at an exercise price of $4.01 per share was outstanding.
In July 1997, the warrant was exercised in its entirety  generating net proceeds
to the Company of approximately $679,800.

Stockholder Rights Plan

         In November 1996, the Company's Board of Directors  declared a dividend
of one preferred  stock purchase right ("Right") for each  outstanding  share of
the  Company's  common stock held on the date (this  dividend now amounts to one
half of a Right  per share of common  stock now  outstanding  as a result of the
two-for-one  split of common  stock in August  1997).  The Rights will expire 10
years after issuance,  and will be exercisable only if a person or group becomes
the beneficial owner of 15% or more of the common stock (such person or group, a
"15% holder") or commences a tender or exchange  offer which would result in the
offeror  beneficially  owning 15% or more of the common  stock.  Each Right will
entitle  stockholders  to buy one  one-ten  thousandth  of a share  of  Series B
Participating Preferred Stock of the Company at an exercise price of $500.00 per
share subject to certain anti-dilution adjustments.

     If a person or group  accumulates  15% or more of the  common  stock,  each
Right (other than Rights held by a 15% holder and certain related parties, which
will be voided) will be adjusted so that upon  exercise the holder will have the
right  to  receive  that  number  of  shares  of  common  stock  (or in  certain
circumstances,  a combination  of securities  and/or  assets)  having a value of
twice the  exercise  price of the Right.  In addition,  if following  the public
announcement  of the  existence  of a 15%  holder,  the Company is involved in a
merger or business  combination or a sale of 50% or more of the Company's assets
or earning power, each Right (other than Rights held by a 15% holder and certain
related parties,  which will be voided) will represent the right to purchase, at
the exercise price, common stock of the acquiring entity having a value of twice
the exercise price at the time. The Board of Directors will also have the right,
following the public  announcement  of the  existence of a 15% holder,  to cause
Rights  (other than Rights held by the 15% holder and certain  related  parties,
which will be voided) to be exchanged  for one share of common stock  (presently
at an exchange ratio of two shares of common stock for each Right).

                                      F-19
<PAGE>


Note 8 - Commitments

     Certain  scientific  instrumentation,  computers  and other  equipment  are
subject to leases which are classified as capital  leases.  At June 30, 1998 and
1997,  $4,331,000  ($3,408,000,  net) and $2,895,000  ($2,629,000,  net) of such
leased equipment are included in property and equipment.

     Rental  expenses   (principally  for  leased   facilities  under  long-term
operating  lease  commitments)  were  $5,031,000,  $3,509,000 and $2,548,000 for
1998, 1997 and 1996. Future minimum payments for capital and operating leases at
June 30, 1998 are as follows:
<TABLE>
<CAPTION>

                                                      Capital Leases               Operating Leases
                                                      --------------               ----------------
(Dollars in thousands)
<S>                                                   <C>                           <C>

           1999                                       $        819                  $        7,472
           2000                                                812                           5,507
           2001                                                818                           5,314
           2002                                                578                           3,943
           2003                                                243                           2,630
           Thereafter                                            0                           2,047
                                                      ------------                  --------------

           Total minimum lease payments                      3,270                  $       26,913
                                                                                    ==============
           Less amount representing interest                   (56)
                                                      -------------

           Obligations under capital leases           $      3,214
                                                      ============
</TABLE>

     The Company is involved in certain legal proceedings  generally  incidental
to its normal  business  activities.  While the outcome of any such  proceedings
cannot be  accurately  predicted,  the Company  does not  believe  the  ultimate
resolution of any such existing matters should have a material adverse effect on
its financial position or results of operations.


                                      F-20
<PAGE>


Note 9 - Alanex acquisition

     In April 1997, the Company executed a merger  agreement with Alanex,  which
now operates as a wholly-owned subsidiary of Agouron. For all outstanding shares
of Alanex common stock and related options and warrants, approximately 2,000,000
shares of Agouron  common  stock were issued,  subject to certain  restrictions.
Such  shares had an  aggregate  fair  market  value on the  measurement  date of
approximately  $61,000,000 and transaction costs were approximately  $1,300,000.
Of the total purchase  price  (including  transaction  costs),  $57,500,000  was
allocated  (as more  fully  described  below) to certain  intangible  assets and
expensed as in-process technology and approximately  $4,800,000 was allocated to
certain tangible and intangible assets and capitalized.

     The  identifiable  intangibles of Alanex include  several drug research and
discovery programs, a proprietary drug discovery technology, a chemical compound
library and an assembled work force.  These intangibles were valued using either
a replacement cost approach (work force, library and proprietary  technology) or
an income approach (research programs). Values assigned to the chemical compound
library and proprietary drug discovery technology have been capitalized, as such
intangibles are of a general nature and may have a number of alternative  future
uses. Values assigned to the drug discovery programs have been expensed, as such
programs  are  pursuing  specific  drug  targets  or  chemical  compounds,   the
technological  feasibility of which having not been demonstrated,  and there may
be no  alternative  future uses for such  targets or chemical  compounds  if the
programs are ultimately less than successful.

     The Company's statement of income (loss) includes the results of operations
related to the  acquisition  since  April  1997.  The  following  are  unaudited
pro-forma  results of operations as if the transaction  had been  consummated on
July 1, 1995:

(In thousands except for per share amounts.)

         Year ended June 30,                    1997              1996
                                             (unaudited)       (unaudited)

         Revenues                           $     138,872    $      62,392
                                            =============    =============

         Net income (loss)                  $      14,276    $     (19,421)
                                            =============    =============

         Earnings (loss) per share          $         .51    $        (.92)
                                            =============    =============


                                      F-21
<PAGE>



Note 10 - Quarterly financial data (unaudited)

(In thousands, except for
per share amounts)
<TABLE>
<CAPTION>
                                                                   Quarter Ended
                                        ---------------------------------------------------------------
                                         September 30     December 31         March 31          June 30
                                        -------------     -------------    -------------     ----------
<S>                                     <C>               <C>              <C>               <C>    

1997
Product sales                           $           0     $           0    $      13,401     $   43,568
Gross margin from product sales                     0                 0            7,378         24,992
Net loss                                      (14,447)          (12,556)          (4,999)       (10,804)
Earnings (loss) per share:
  Basic                                          (.57)             (.46)            (.18)          (.38)(1)
  Diluted                                        (.57)             (.46)            (.18)          (.38)(1)

1998
Product sales                           $      79,502     $      91,800    $     111,950     $  126,046
Gross margin from product sales                45,429            53,858           62,730         74,637
Net income (loss)                               3,630             4,922           13,525         (8,923)
Earnings (loss) per share:
  Basic                                           .11               .16              .44           (.29)(2)
  Diluted                                         .11               .15              .41           (.29)(2)

</TABLE>

(1)  During the fourth  quarter of 1997,  the Company  recorded a  write-off  of
     $57,500,000 ($2.03 per share) of in-process  technology associated with the
     acquisition of Alanex,  partially  offset by the realization of $43,800,000
     ($1.54 per share) of  deferred  tax assets  associated  with the  Company's
     expectation of future taxable income.

(2)  During the fourth quarter of 1998, the Company incurred in-licensing costs
     of $26,000,000 (tax-effected $.50 per share) for commercial rights to three
     development stage anti-HIV products.


                                      F-22
<PAGE>




Item 9.       CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
              FINANCIAL DISCLOSURE

                                      None.


                                     29
<PAGE>


                                    PART III

Item 10.      DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

     The executive officers and directors of the Company are as follows:
<TABLE>
<CAPTION>

                  Name                          Age                        Position
                  ----                          ---                        --------

           <S>                                   <C>          <C>                                                         
           Peter Johnson                         53           President, Chief Executive Officer and Director

           Marvin R. Brown, M.D.                 51           Vice President, and President of Alanex

           Neil J. Clendeninn, M.D., Ph.D.       49           Corporate Vice President, Head of Clinical Affairs

           Steven S. Cowell                      49           Corporate Vice President, Finance and Chief
                                                                Financial Officer

           William C. Denby                      43           Vice President, Head of Marketing and Sales

           Gary E. Friedman                      51           Corporate   Vice    President,    General    Counsel,
                                                                Secretary and Director

           Donna C. Nichols                      41           Vice President, Head of Corporate Communications

           Barry D. Quart, Pharm.D.              41           Senior Vice President, Head of Drug Development

           R. Kent Snyder                        44           Senior Vice President, Head of Commercial Affairs

           Michael D. Varney, Ph.D.              40           Vice President, Head of Research

           Stephanie Webber, Ph.D.               50           Vice President, Head of Development Pharmacology

           Glenn R. Zinser                       55           Corporate Vice President, Head of Operations

           John N. Abelson, Ph.D.(1)             59           Director

           Patricia M. Cloherty(2)               56           Director

           A.E. Cohen(1)                         62           Director

           Michael E. Herman(1)                  57           Director

           Irving S. Johnson, Ph.D.              73           Director

           Antonie T. Knoppers, M.D.(2)          83           Director

           Melvin I. Simon, Ph.D.(2)             61           Director
</TABLE>



(1)  Member of Directors Compensation Committee
(2)  Member of Audit Committee

                                       30
<PAGE>


     Peter  Johnson,  a founder of the Company,  has served as a director and as
president  and chief  executive  officer of the Company  since its  inception in
1984.  Through  1989,  Mr.  Johnson  held  various  positions  with The  Agouron
Institute,  including executive  director.  Mr. Johnson received a M.A. from the
University of California, San Diego.

     Marvin R. Brown joined the Company in 1997 as vice president, and president
of Alanex.  In 1991,  Dr. Brown founded  Alanex and, from 1993 until joining the
Company, served as president,  chief executive officer and chairman of the board
of Alanex.  Prior to joining  Alanex,  Dr. Brown served as professor of medicine
and surgery and director of the peptide biology  laboratory at the University of
California,  San Diego from 1986 through 1991 and was on the faculty of the Salk
Institute for Biological  Studies from 1975 to 1986. Dr. Brown received his M.D.
from the University of Arizona.

     Neil J. Clendeninn  joined the Company in 1993 as vice president,  clinical
affairs. In 1997, Dr. Clendeninn was promoted to corporate vice president,  head
of clinical  affairs.  From 1985 until joining the Company,  Dr. Clendeninn held
various   positions  with  Burroughs   Wellcome  Co.,   including  head  of  the
chemotherapy  section from 1988. From 1981 through 1985, Dr.  Clendeninn  worked
with the  clinical  oncology and  clinical  pharmacology  groups at the National
Institutes of Health. Dr. Clendeninn received a M.D. and a Ph.D. in pharmacology
from New York University.

     Steven S. Cowell joined the Company in 1991 as vice president,  finance and
chief  financial  officer.  In 1997,  Mr. Cowell was promoted to corporate  vice
president.  From 1982  until  joining  the  Company,  Mr.  Cowell  held  various
positions,  the most recent of which was vice  president and controller at Cetus
Corporation,   a  public   biotechnology   company   primarily  engaged  in  the
development, manufacture and marketing of pharmaceutical products. Mr. Cowell is
a Certified  Public  Accountant  in  California  and received a B.S. in business
administration from the University of California, Berkeley.

     William  C.  Denby  joined  the  Company in 1995 and in 1997 was named vice
president,  head of marketing and sales. Previously,  Mr. Denby served as senior
director of marketing and sales. From 1978 until joining the Company,  Mr. Denby
held  various  positions  at  Marion  Laboratories,  Inc.  (now  Hoechst  Marion
Roussel),  including  strategic  planning  manager  and managed  care  marketing
manager.  Mr. Denby received a B.A. in English from the State  University of New
York, and holds a M.B.A. in Finance from Rockhurst College.

     Donna C.  Nichols  joined  the  Company  in 1987 and in 1997 was named vice
president,  head of  corporate  communications.  Previously,  Ms.  Nichols  held
various  positions  within  the  Company,  most  recently  as  senior  director,
corporate communications. Ms. Nichols attended Kent State University.

     Gary E. Friedman,  a founder of the Company, has served as a director since
its inception,  as the secretary of the Company since 1986 and as vice president
and general  counsel since 1991. In 1997, Mr. Friedman was promoted to corporate
vice president.  Previously,  from 1982 until joining the Company,  Mr. Friedman
was a  principal  of the law firm of  Friedman,  Jay &  Cramer,  a  Professional
Corporation. Mr. Friedman is a California Certified Specialist in Taxation. Mr.

                                       31
<PAGE>


Friedman  received a J.D. and a M.B.A.  from the  University of California,
Berkeley and a L.L.M. in taxation from the University of San Diego.
     
     Barry D. Quart  joined the  Company in 1993 as vice  president,  regulatory
affairs.  In 1997,  Mr. Quart was named to senior vice  president,  head of drug
development.  From 1983 until  joining  the  Company,  Dr.  Quart  held  various
positions with  Bristol-Myers  Squibb Company,  including  executive director of
international  regulatory  affairs from 1992. Dr. Quart  received a Pharm.D.  in
clinical pharmacy from the University of California, San Francisco.

     R. Kent  Snyder  joined  the  Company in 1991 as vice  president,  business
development.  In  1995,  Mr.  Snyder's  title  was  changed  to vice  president,
commercial  affairs and in 1997, he was named senior vice  president,  corporate
affairs.  From 1982 until joining the Company, Mr. Snyder held various positions
with Marion Laboratories,  Inc. (now Hoechst Marion Roussel), including director
of  U.S./European  licensing.  Prior to his  employment at Marion,  from 1978 to
1982, he held various sales and marketing positions with Hoffmann-LaRoche Ltd.
Mr. Snyder received a M.B.A. from Rockhurst College.

     Michael D. Varney  joined the  Company in 1987 and in 1997 was  promoted to
vice president,  head of research.  A synthetic organic chemist,  Dr. Varney has
been  involved  in all  aspects  of drug  discovery  at the  Company  since  its
inception.  Dr.  Varney  received his B.S. in Chemistry  from UCLA and Ph.D.  in
Natural Product  Synthesis from the California  Institute of Technology.  Before
joining the Company, he completed  postdoctoral research in Bioorganic Chemistry
at Columbia University.

     Stephanie  Webber  joined the  Company in 1988 and in 1997 was  promoted to
vice president, head of development pharmacology.  Previously, Dr. Webber served
as senior director,  pharmacology and toxicology.  From 1980 to 1988, Dr. Webber
was a  research  fellow at the  Scripps  Clinic  and  Research  Foundation.  She
received her B.S. in Biology from the University of Sussex, England, and holds a
Ph.D. in Zoology from the University of London.

     Glenn R. Zinser joined the Company in 1987 and,  since 1995,  has served as
vice president,  operations.  In 1997, Mr. Zinser was promoted to corporate vice
president,  head of operations.  Previously,  from 1987 through 1995, Mr. Zinser
held various management  positions with the Company,  including senior director,
operations  from 1993  through  1995.  Mr.  Zinser  received  a M.B.A.  from the
University of California, Los Angeles.

     John N. Abelson,  a founder of the Company,  has served as a director since
its inception.  Dr. Abelson, a molecular biologist,  is a member of the National
Academy of Sciences. Since 1982, Dr. Abelson has been a member of the faculty of
the Division of Biology at the California  Institute of Technology  where,  from
1989 until 1995, he served as chairman.  Previously, Dr. Abelson was a member of
the faculty in the Department of Chemistry at the University of California,  San
Diego.  Dr.  Abelson  received  a Ph.D.  in  biophysics  from The Johns  Hopkins
University and was a postdoctoral  fellow at the Laboratory of Molecular Biology
in  Cambridge,  England.  Dr.  Abelson  also serves as a director of The Agouron
Institute.


                                       32
<PAGE>


     Patricia M. Cloherty joined the Board in 1988. Since 1970, Ms. Cloherty has
been  associated  with Patricof & Co.  Ventures,  Inc.  (formerly  Alan Patricof
Associates, Inc.), a New York venture capital firm ("Patricof"),  and has been a
general partner of its funds since 1973.  From1993 until 1997, she was president
of  Patricof.  From  1997  to the  present,  Ms.  Cloherty  has  been  executive
co-chairman as well as general partner of Patricof.  Ms. Cloherty also served as
deputy  administrator  for the U.S.  Small Business  Administration  in 1977 and
1978.  Ms.  Cloherty  also serves on the board of directors  of several  private
companies.

     A.E. Cohen joined the Board in 1992. Mr. Cohen is an independent management
consultant.  From 1957 until his  retirement  in 1992,  Mr.  Cohen held  various
positions at Merck & Co., Inc., including senior vice president and president of
the Merck Sharp & Dohme  International  Division.  Currently,  Mr.  Cohen is the
chairman of the board of Neurobiological  Technologies,  Inc. and is a member of
the board of directors of Akzo Nobel N.v., Teva Pharmaceutical  Industries Ltd.,
Smith Barney (Mutual Funds), and Pharmaceutical  Product Development,  Inc., all
of which are public  companies.  Mr.  Cohen also serves as a  consultant  to The
Population  Council and Chugai  Pharmaceutical  Co. Ltd., Tokyo ("Chugai"),  and
serves as chairman of the board of Chugai's U.S. subsidiary companies. Mr. Cohen
also is a member of the board of directors of Lung Check, Inc.

     Michael  E.  Herman  joined  the  Board in 1992.  Mr.  Herman  is a private
investor,  as well as president and chief  operating  officer of the Kansas City
Royals  Baseball  Team.  From 1974 until his retirement in 1990, Mr. Herman held
various  positions at Marion  Laboratories,  Inc. (now Hoechst Marion  Roussel),
including executive vice president and chief financial officer.  Currently,  Mr.
Herman serves as chairman of the finance  committee of the Ewing Marion Kauffman
Foundation, a private foundation located in Kansas City, where from 1985 through
1990,  he was the president and chief  operating  officer.  Mr. Herman is also a
member of the board of directors of Cerner Corporation, Seafield Capital and SLH
Corporation,  all of which  are  public  companies,  and  serves on the board of
directors of several private companies.

     Irving S. Johnson  joined the Board in 1989.  Dr. Johnson is an independent
consultant in biomedical research working with numerous private companies.  From
1953 until his  retirement in 1988,  Dr.  Johnson held various  positions at Eli
Lilly and Company,  including  vice  president of research from 1973 until 1988.
Dr.  Johnson  also  served on  several  committees  of the  National  Academy of
Sciences,  the Office of Technology  Assessment  and the National  Institutes of
Health.  Currently,  he is a  member  of  the  board  of  directors  of  Allelix
Biopharmaceuticals Inc. and Ligand Pharmaceuticals  Incorporated,  and is on the
scientific  advisory  board  of  ELAN  Corporation,  all  of  which  are  public
companies.  Dr.  Johnson  received a Ph.D.  in  developmental  biology  from the
University of Kansas.

     Antonie  T.  Knoppers  joined  the  Board  in  1991.  Dr.  Knoppers  is  an
independent management  consultant.  From 1952 until his retirement in 1975, Dr.
Knoppers held various positions at Merck & Co., Inc., including vice chairman of
the board and president and chief operating officer. Dr. Knoppers is a member of
the board of directors of Centocor,  Inc., a public  biotechnology  company.  In
addition,  he is a former  chairman  of the U.S.  Council  of the  International
Chamber  of  Commerce  and  a  member  of  the  advisory  board  of  PaineWebber
Development Corporation, an affiliate of PaineWebber Incorporated.  Dr. Knoppers
received a

                                       33
<PAGE>


M.D. from the University of Amsterdam and a Ph.D. from the University of Leiden,
The Netherlands.

     Melvin I. Simon,  a founder of the Company,  has served as a director since
its inception.  Dr. Simon, a molecular  geneticist,  is a member of the National
Academy of Sciences. Currently, Dr. Simon is chairman of the Division of Biology
at the  California  Institute  of  Technology  where he has been a member of the
faculty  since 1982.  Previously,  Dr.  Simon was a member of the faculty in the
Department of Biology at the  University  of  California,  San Diego.  Dr. Simon
received a Ph.D. in biochemistry from Brandeis University. Dr. Simon also serves
as a director of The Agouron Institute.

Item 11.      EXECUTIVE COMPENSATION

Item 12.      SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

Item 13.      CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

     The information  required under Part III, Items 10 (in part), 11, 12 and 13
has been  omitted  from this report  since the Company  intends to file with the
Securities and Exchange  Commission,  not later than 120 days after the close of
its fiscal year, a definitive  proxy statement  prepared  pursuant to Regulation
14A, which information is hereby incorporated by reference.


                                       34
<PAGE>


                                     PART IV


Item 14.      EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K

 (a)          List of documents filed as part of this report:

              (1)     Financial Statements and Supplementary Data
                      Reference is made to the Index to Financial Statements and
                      Schedules  under  Item 8 in Part II  hereof,  where  these
                      documents are listed.
              (2)     Exhibits - see (c) below

 (b)          Reports on Form 8-K

     No reports on Form 8-K were filed during the fourth quarter of fiscal 1998.

(c)           Exhibits

         Exhibit
         Number                             Exhibit
         --------     ----------------------------------------------------------

           2.1(a)     Agreement and Plan of Reorganization dated as of April 28,
                      1997,  between  Agouron  Pharmaceuticals,   Inc.,  Agouron
                      Acquisition Corporation and Alanex Corporation.
           3.1(b)     Restated Articles of Incorporation (December 10, 1992).
           3.2(c)     Amended and Restated Bylaws (Restated June 17, 1991).
           4.1(d)     Rights  Agreement  dated  November 7, 1996,  as amended on
                      November  27,  1996,  between the Company and Chase Mellon
                      Shareholder  Services.  L.L.C., which includes, as Exhibit
                      A,  the  Certificate  of  Determination,  Preferences  and
                      Rights of Series B Participating  Preferred Stock as filed
                      with the  California  Secretary  of State on November  20,
                      1996.
         10.01(h)     1990 Stock Option Plan (Restated November 2, 1995).
         10.02(k)     Form of 1990 Incentive Stock Option Agreement.
         10.03(k)     Form of 1990 Non-Statutory Stock Option Agreement for 
                      Employees/Officers/Directors.
         10.04(k)     Form of 1990 Non-Statutory Stock Option Agreement for 
                      Consultants.
         10.05(c)     1985 Stock Option Plan (Last Amended August 14, 1991).
         10.06(e)     Agouron Pharmaceuticals, Inc. 401(k) Plan
                      (Amended August 1992).
         10.07(b)     Agouron Pharmaceuticals, Inc. Employee Stock Purchase Plan
                      (October 15, 1992).
         10.08(b)     Agouron Pharmaceuticals, Inc. Flexible Benefits Plan 
                      (December 10, 1992).
         10.09(f)     Agreement  Two  dated  February  28,  1994  between  Japan
                      Tobacco  Inc.  and  the  Company.
                      (Portions of the agreement receive confidential  treatment
                      pursuant to an application  filed April 25, 1994; File No.
                      0-15609).

                                       35
<PAGE>


         Exhibit
         Number                             Exhibit
         --------     ----------------------------------------------------------

         10.10(g)     Development  and License  Agreement dated December 1, 1994
                      between  Japan  Tobacco Inc. and the Company  (Portions of
                      the agreement receive  confidential  treatment pursuant to
                      an application dated January 31, 1995).
         10.11(h)     First  Amendment  to  Development  and  License  Agreement
                      effective  December 1, 1994 between Japan Tobacco Inc. and
                      the Company.  (Confidential  treatment has been  requested
                      for portions of this agreement  pursuant to an application
                      dated January 31, 1996. The underlying agreement was filed
                      as  Exhibit  10.54  on  Form  10-Q  for the  period  ended
                      December  31,   1994,   and   portions   thereof   receive
                      confidential   treatment  pursuant  to  an  order  of  the
                      Securities and Exchange Commission dated June 28, 1995.)
         10.12(i)     Amendment effective January 1, 1996 to the Agouron
                      Pharmaceuticals, Inc. 401(k) Plan.
         10.13(j)     1996 Stock Option Plan.
         10.14(j)     Form of 1996 Incentive Stock Option Agreement.
         10.15(j)     Form  of  1996  Non-Statutory   Stock  Option  Agreement
                      for Employees/Officers/Directors.
         10.16(j)     Form  of  1996  Stock  Option
                      Agreement for Consultants  10.17(l) Second Amendment to 
                      Development and License Agreement effective January 17, 
                      1997 between Japan   Tobacco  Inc.   and  the  Company
                      (Confidential treatment   has  been   requested  for  
                      portions  of  this agreement  pursuant  to an  application
                      dated  August 21, 1997, as separately filed with the
                      Securities and Exchange Commission.  The underlying 
                      agreement was filed as Exhibit 10.54 on Form 10-Q for the
                      period ended December 31, 1994, and  portions  thereof  
                      receive   confidential   treatment pursuant  to an  orde
                      of  the  Securities  and  Exchange Commission dated
                      June 28, 1995.)
         10.18(l)     Third  Amendment  to  Development  and  License  Agreement
                      effective  December 1, 1996 between Japan Tobacco Inc. and
                      the Company.  (Confidential  treatment has been  requested
                      for portions of this agreement  pursuant to an application
                      dated  August  21,  1997,  as  separately  filed  with the
                      Securities   and  Exchange   Commission.   The  underlying
                      agreement  was filed as Exhibit 10.54 on Form 10-Q for the
                      period  ended  December 31,  1994,  and  portions  thereof
                      receive confidential treatment pursuant to an order of the
                      Securities and Exchange Commission dated June 28, 1995.)
         10.19(l)     VIRACEPT License  Agreement  between the Company and Japan
                      Tobacco Inc. and F.  Hoffmann-La  Roche Ltd dated June 30,
                      1997.  (Confidential  treatment  has  been  requested  for
                      portions  of this  agreement  pursuant  to an  application
                      dated  August  21,  1997,  as  separately  filed  with the
                      Securities and Exchange Commission.)
         10.20(m)     Form of 1998 Employee Stock Option Plan.
         10.21(m)     Form of 1998 Employee Non-Statutory Stock Option
                      Agreement.


                                       36
<PAGE>


         Exhibit
         Number                             Exhibit
         --------     ----------------------------------------------------------

         10.22        License and Supply Agreement between the Company and Japan
                      Energy   Corporation   effective  as  of  June  30,  1998.
                      (Confidential treatment has been requested for portions of
                      this agreement  pursuant to an application dated August 4,
                      1998, as separately filed with the Securities and Exchange
                      Commission.)
         10.23        Common  Stock  Purchase   Agreement   between  The  Immune
                      Response  Corporation and the Company dated June 11, 1998.
                      (Confidential treatment has been requested for portions of
                      this agreement  pursuant to an application dated August 4,
                      1998, as separately filed with the Securities and Exchange
                      Commission.)
         10.24        Amendment to the VIRACEPT  License  Agreement  between the
                      Company and Japan  Tobacco Inc. and F.  Hoffmann-La  Roche
                      Ltd as of May 1, 1998.  (Confidential  treatment  has been
                      requested  for portions of this  agreement  pursuant to an
                      application dated August 4, 1998, as separately filed with
                      the Securities and Exchange Commission.)
         21           Subsidiaries of Agouron Pharmaceuticals, Inc.
         23.1         Consent of Independent Accountants.
         27           Financial  Data  Schedule.  (Exhibit 27 is  submitted  as
                      an exhibit  only in the  electronic format of this  Annual
                      Report on Form 10-K submitted to the Securities and
                      Exchange Commission.)
         99           Important Factors Regarding Forward-Looking Statements.


     (a) Incorporated by Reference to Form 8-K filed on May 23, 1997.
     (b)  Incorporated  by  Reference  to Form 10-Q filed for the quarter  ended
     December 31, 1992. (c) Incorporated by Reference to Form 10-K filed for the
     year ended June 30, 1991.  (d)  Incorporated  by  Reference  for Form 8-K/A
     filed on December  20,  1996.  (e)  Incorporated  by Reference to Form 10-K
     filed for the year ended June 30, 1992.  (f)  Incorporated  by Reference to
     Form 10-Q/A filed for the quarter ended March 31, 1994. (g) Incorporated by
     Reference to Form 10-Q filed for the quarter ended  December 31, 1994.  (h)
     Incorporated by Reference to Form 10-Q filed for the quarter ended December
     31, 1995. (i)  Incorporated by Reference to Form 10-Q filed for the quarter
     ended March 31, 1996.  (j)  Incorporated  by Reference to Form S-8 filed on
     November  26,  1996.  (k)  Incorporated  by  Reference to Form 10-Q for the
     quarter ended December 31, 1996. (l) Incorporated by Reference to Form 10-K
     for the year ended June 30, 1997. (m) Incorporated by Reference to Form S-8
     filed on February 19, 1998.

                                       37
<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.
                                   AGOURON PHARMACEUTICALS, INC.

August 4, 1998                     By:  /s/ Peter Johnson
                                   ---------------------------------
                                   Peter Johnson
                                   President, Chief Executive Officer
                                   and Director

     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 date indicated.
<TABLE>
<CAPTION>

Signature                                                 Title                         Date
- ---------                                                 -----                         ----
<S>                                         <C>                                         <C>

/s/ Peter Johnson                           President, Chief Executive                  August 4, 1998
- ------------------------------------
Peter Johnson                               Officer and Director

/s/ Steven S. Cowell                        Corporate Vice President, Finance           August 4, 1998
- ------------------------------------
Steven S. Cowell                            and Chief Financial Officer

/s/ Gary E. Friedman                        Corporate Vice President,                   August 4, 1998
- ------------------------------------
Gary E. Friedman                            General Counsel, Secretary
                                            and Director

/s/ John N. Abelson                         Director                                    August 4, 1998
John N. Abelson, Ph.D.

/s/ Patricia M. Cloherty                    Director                                    August 4, 1998
- ------------------------------------
Patricia M. Cloherty

/s/ A. E. Cohen                             Director                                    August 4, 1998
A. E. Cohen

/s/ Michael E. Herman                       Director                                    August 4, 1998
- ------------------------------------
Michael E. Herman

/s/ Irving S. Johnson                       Director                                    August 4, 1998
Irving S. Johnson, Ph.D.

/s/ Antonie T. Knoppers                     Director                                    August 4, 1998
Antonie T. Knoppers, M.D.

/s/ Melvin I. Simon                         Director                                    August 4, 1998
Melvin I. Simon, Ph.D.
</TABLE>

                                       38



                          LICENSE AND SUPPLY AGREEMENT

     This License and Supply Agreement ("Agreement"),  effective as of the 30th
day of June 1998, is by and between Japan Energy Corporation, a corporation duly
organized and existing under the laws of Japan and having its principal place of
business  at  10-1,  Toranomon  2-chome,   Minato-ku,   Tokyo  105-8407,   Japan
(hereinafter  referred  to  as  "JE"),  and  Agouron  Pharmaceuticals,  Inc.,  a
corporation  duly  organized  and  existing  under  the  laws  of the  State  of
California,  U.S.A.,  and having its principal  place of business at 10350 North
Torrey Pines Road, La Jolla,  California 92037, U.S.A.  (hereinafter referred to
as "Agouron").  JE and Agouron are sometimes  hereinafter  each referred to as a
Party (collectively "Parties") to this Agreement.

                          BACKGROUND

     JE possesses  technical  information  and know-how  pertaining to a certain
pharmaceutical compound designated JE-2147 and its related compounds that may be
useful  in  the  treatment  and  prevention  of  Human   Immunodeficiency  Virus
infections and other diseases.

     The Parties entered into a Confidentiality Agreement effective December 31,
1997  (the  "Confidentiality  Agreement")  and  a  Material  Transfer  Agreement
effective  December 31, 1997 (the "Material  Transfer  Agreement"),  pursuant to
which Agouron has undertaken certain evaluations of JE-2147.

     JE holds patents rights pertaining to JE-2147 and its related compounds.

     Agouron  desires to obtain a license  from JE to enable  Agouron to develop
and commercialize  Product (as hereinafter  defined) in certain countries of the
world,  and JE is  willing to grant  such  license  on the terms and  conditions
hereinafter  set forth.

     The Parties wish to cooperate under the terms of this Agreement to optimize
the development and commercialization of Product.

     The Parties also wish to confirm their arrangement  regarding the supply of
Compound by JE to Agouron and the supply of Product by Agouron to JE (both terms
as hereinafter defined).

     On June 30,  1998,  the parties  executed and  delivered to each other,  by
telefax,  a prior version of this  Agreement.  The parties now wish to supersede
such prior  version of this  Agreement  and to formally  enter into this revised
version of this Agreement.

     NOW, THEREFORE, in consideration of the premises, and the mutual covenants,
benefits and obligations set forth herein, the Parties agree as follows:
<PAGE>


                        ARTICLE I - DEFINITIONS

     When used in this  Agreement,  the following  terms shall have the meanings
set  out in this  Article  I.  Except  as  otherwise  explicitly  provided,  all
references to Articles and Sections  shall refer to the Articles and Sections of
this Agreement, and all references to Attachments,  Exhibits and Schedules shall
refer to the Attachments, Exhibits and Schedules to this Agreement, all of which
are incorporated herein by reference.

     Section 1.01 "Affiliate"  means any person, organization or entity that is,
directly or indirectly, controlling, controlled by, or under common control with
JE or  Agouron,  as the  case  may  be.  The  term  "control"  (including,  with
correlative meaning, the terms "controlled by" and "under common control with"),
as  used  with  respect  to  any  person,  organization  or  entity,  means  the
possession,  directly  or  indirectly,  of the  power to  direct,  or cause  the
direction  of, the  management  and  policies of such  person,  organization  or
entity,  whether through the ownership of voting  securities,  or by contract or
court  order or  otherwise.  The  ownership  of voting  securities  of a person,
organization  or entity shall not, in and of itself,  constitute  "control"  for
purposes  of this  definition,  unless  said  ownership  is of a majority of the
outstanding securities entitled to vote of such person,  organization or entity.
Affiliate shall also mean a limited partnership in which a subsidiary of Agouron
and/or JE is a general partner.

      Section 1.02      "Combination Product" means *



     Section 1.03  "Compound"  means the chemical compound known by the JE code
name JE-2147 ("JE-2147"), whose chemical structure is as follows:
                                                         *

                          (chemical structure)




The definition of Compound also means:  (i) *



     Section  1.04  "Compound  Supply Plan" means the supply plan under which JE
will provide  Compound to Agouron in accordance  with the  provisions of Section
4.04.

     Section 1.05      "Control," "Controlled" or "Controlling" means *




                                       2
<PAGE>



     Section 1.06      "Development Program" means *














      Section 1.07      "Development Program Patent Rights" means *


















        Section 1.08      "Development Program Technology" means *











                                       3
<PAGE>



     Section 1.09  "Dossier"  means the document that is filed with and approved
by a government or health authority for purposes of Registration, for example, a
Marketing Authorization Application.

     Section 1.10   "Effective Date" means June 30, 1998.

     Section  1.11  "EMEA"  means the  European  Agency  for the  Evaluation  of
Medicinal Products.

     Section 1.12   "FDA" means the United States Food and Drug Administration.

     Section 1.13   "Field" means *


     Section 1.14 "Initial Commercial Sale" means the first commercial sale of a
Product *



     Section  1.15 "JE  Territory"  means Japan,  Taiwan,  South Korea and North
Korea.

     Section 1.16 "JE Patent Rights" means: *






     Section 1.17 "JE Technology" means *








     Section 1.18 "Licensed  Territory" means all countries of the world, except
for Japan, Taiwan, South Korea and North Korea.

     Section 1.19 "MAA" means Marketing Authorization Application.



                                       4
<PAGE>


     Section 1.20 "Major  Market  European  Country"  means the United  Kingdom,
France, Germany, Spain or Italy.

     Section  1.21 "Net Sales"  means the gross  amount  invoiced for Product by
Agouron, its Affiliates and sublicensees to non-Affiliated third parties,  other
than separately itemized  transportation  costs, and sales taxes and other taxes
that are  directly  linked to and  included  in the gross  amount  invoiced,  as
computed on a product-by-product basis for the countries concerned, less: *







     Section 1.22 "New Drug  Application" or "NDA" means a new drug application,
product license application or comparable  regulatory submission to the FDA, the
EMEA or an equivalent  agency of a country in the  Territory  for  permission to
commence commercial sale of a Product.

     Section 1.23 "Patent Rights" means, collectively, *


     Section 1.24     "Product" means any *



     Section 1.25  "Registration"  means the official approval by the government
or health authority in a country (or  supra-national  organization,  such as the
European Agency for the Evaluation of Medicinal Products) that is required for a
Product to be offered for sale in such country, including such authorizations as
may be required for the production, importation, pricing, reimbursement and sale
of such  Product,  and for  subsequent  regulatory  filings for line  extensions
and/or additional indications of such Product.

     Section 1.26 "Territory" means *

     Section 1.27 "Trade  Dress" means any  materials  directly  supporting  the
commercialization  of a  Product,  including,  but not  limited  to,  packaging,
package inserts,  advertising or selling aids, brochures,  mailings and/or other
marketing or packaging materials.

     Section 1.28  "Trademark(s)"  means any  trademark  selected and owned by a
Party and  registered  (or applied  for) by such  Party,  its  Affiliate(s)  and
sublicensee(s)  in the  Territory  for use in  connection  with the marketing of
Products.  The  definition  of  Trademark(s)  shall not refer to trade  names or
designs such as logos used by a Party to designate the name of such Party.


                                       5
<PAGE>


     Section 1.29 "United  States" or "U.S." means the United States of America,
its territories,  possessions and protectorates (including Puerto Rico), and the
District of Columbia.

     Section 1.30 "Valid Claim" means a *




                        ARTICLE II - COMMERCIAL RIGHTS

     Section   2.01  License   Grants.   To  implement   the   development   and
commercialization of Compound and/or Products, the Parties, subject to the other
applicable  provisions of this  Agreement,  grant and accept the license  rights
provided below in this Article II.

     (a) Subject to the provisions of Section 2.01(c),  and Article V, JE grants
Agouron the exclusive right,  even as to JE (with right of sublicense),  to use,
offer for sale, sell and/or import in or into the Licensed  Territory,  Compound
and Products under  applicable JE Patent Rights and  Development  Program Patent
Rights, and using applicable JE Technology and Development Program Technology.

     (b) *















     (c) *










                                       6
<PAGE>





     (d) *





     (e) Agouron grants JE *




     (f) Agouron grants JE *









     (g) Agouron grants JE *











                                       7
<PAGE>






     (h) Subject to the provisions of Section 4.04, Agouron shall have *




     Subject to the provisions of Section 4.04, JE shall have a *











     (i) *












     (j) *








     (k) *







                                       8
<PAGE>





     (l) Agouron  agrees to use  reasonable  efforts to not sell  Product in the
Licensed  Territory to persons who it knows,  or has reason to know, will resell
and/or transfer such Product outside of the Licensed Territory.

     Section 2.02 Discontinuance of the Development Program

     (a) Agouron  shall,  in a timely manner,  use  reasonable  diligence in the
development  and  Registration  of a  Product  in  the  Field  in  the  Licensed
Territory.  Reasonable  diligence  means a commercially  reasonable  standard of
effort  based on the  commercial  potential  for such  Product  in the  Licensed
Territory.   Development   efforts   undertaken  by  Agouron's   Affiliates  and
sublicensees shall be attributed to Agouron. *













     (b) *
















                                       9
<PAGE>




     Section 2.03 Diligent Efforts to Market *


















           ARTICLE III - SHARING AND PROTECTION OF INTELLECTUAL PROPERTY

     Section 3.01 Patents.

     (a) *



















                                       10
<PAGE>


     (b) *








     (c) *










     (d) *











     (e) *









                                       11
<PAGE>



     (f) *





     (g) *













     (h) *


















     (i) *




                                       12
<PAGE>



     (j) *









     (k) *






















     (l) *



     Section 3.02  Infringement  of Patents of Third  Parties.  Each Party,  its
Affiliates and sublicensees, and their respective employees and agents shall use
diligent efforts to avoid known 


                                       13
<PAGE>

infringement  of patents of any third party *



































          Section 3.03 Trademarks. *







                                       14
<PAGE>













          Section 3.04 Information Exchange. *











          Section 3.05 Confidentiality.  Except as otherwise expressly specified
     in this Agreement and except for the proper  exercise of any license rights
     granted or rights reserved under this Agreement,  JE and Agouron shall each
     keep in  confidence  and  shall  each use its  best  efforts  to cause  its
     respective Affiliates,  employees, directors, agents, consultants, clinical
     research  associates,  outside  contractors,   clinical  investigators  and
     sublicensees  to whom it is permitted to disclose  information  pursuant to
     the terms of this  Agreement to retain in confidence all  confidential  and
     proprietary information of the other Party, including the *



          Without limiting the foregoing, JE and Agouron shall each exercise the
     same  degree of  diligence  and care with  respect  to the  above-described
     information  as  it  exercises  with  respect  to  its  other   proprietary
     information.  Each Party  represents  to the other Party that it  maintains
     policies and procedures designed to prevent the unauthorized  disclosure of
     its proprietary data and information. *






                                       15
<PAGE>






          The preceding  obligations  of  confidentiality  shall be waived as to
     information  that the  Party  claiming  waiver  can  demonstrate,  based on
     written  records:  (i) was in the public  domain at the time of  disclosure
     hereunder;  (ii) comes into the public domain through no fault of the Party
     claiming waiver;  (iii) was known to the Party claiming waiver prior to its
     disclosure under this Agreement,  unless such information was obtained from
     the  other  Party  on  a  confidential   basis;  (iv)  is  disclosed  on  a
     non-confidential basis to the Party claiming waiver by a third party having
     a lawful right to make such disclosure on a non-confidential  basis; (v) is
     published  with the prior mutual  agreement  of the  Parties,  after having
     given consideration to appropriate  commercial factors; (vi) comes into the
     public domain through governmental publication of a patent application;  or
     (vii) is  required  to be  disclosed  to file a patent or other  regulatory
     application or to comply with applicable laws and regulations. *



          The  Parties  acknowledge  and  agree  that the  Parties'  rights  and
     obligations under the  Confidentiality  Agreement and the Material Transfer
     Agreement  between the Parties which were both  originally  entered into on
     December 22, 1997 are hereby  superseded by the  provisions of this Section
     3.05.

          Section  3.06  Publication.  JE  and  Agouron  each  acknowledges  the
     interests  of the other Party in  publishing  certain of the results of its
     development and Registration of a Product to obtain  recognition within the
     scientific community and to advance the state of scientific knowledge.  The
     Parties also  recognize  their mutual  interests in obtaining  valid patent
     protection for their drug products. Consequently, a Party, its employees or
     consultants wishing to make a publication shall *



















                                       16
<PAGE>










              ARTICLE IV - DEVELOPMENT AND COMMERCIALIZATION STRUCTURE

          Section 4.01  Coordination.  Coordination of the Parties'  development
     and  commercialization  efforts for  Compound  and Products in the Licensed
     Territory shall be carried out as specified in Sections 4.02 and 4.03.

          Section  4.02  Development  and   Registration;   Responsibility   for
     Development  Costs. JE and Agouron  acknowledge  their mutual  intention to
     cooperate in a commercially  reasonable manner in the timely development of
     Compound and Products in the  Territory.  The Parties  further  acknowledge
     their  mutual  willingness  to  discuss  ad  hoc  agreements  to  establish
     appropriate mechanisms for such cooperation.  Recognizing the importance of
     timely initiation of development activities,  however, JE and Agouron agree
     to the following  basic approach to development of Compound and Products in
     the Licensed Territory,  and to the conduct and funding of their respective
     development activities.

         (a)      *








          (b) The Parties  acknowledge  that it will be  necessary  to amend and
     update the Development Program as additional  information becomes available
     concerning the  prerequisites  necessary for Registration of Product in the
     Licensed Territory. *





                                       17
<PAGE>





          (c) As soon as possible  after the  execution of this  Agreement,  the
     Parties shall  promptly  reach  agreement on the basic terms under which JE
     will  manufacture  and supply  Compound  to  Agouron,  its  Affiliates  and
     sublicensees *



          (d) Agouron shall be responsible *







          (e) Agouron,* , shall be responsible  for submission of Dossiers for a
     Product to the regulatory  authorities in the Licensed Territory in pursuit
     of approvals to sell such Product and *


          All Dossiers for Product in the Licensed  Territory  shall be owned by
     and be in the name of Agouron.

         (f)      JE shall cooperate with Agouron to *




         (g)      JE will be responsible for *



         (h)      JE shall be responsible *



          (i) To the extent required to support Registrations of a Product (such
     as for  Investigational  New Drug Applications and New Drug  Applications),
     Agouron shall have

                                       18
<PAGE>


*





          (j) Each Party agrees to use its diligent  efforts in  responding in a
     timely manner, *






          (k) Agouron shall keep JE informed of its progress in the  development
     and Registration of Products. This information exchange shall include, *




















          (l) JE and Agouron shall each use qualified persons in the development
     activities of the Development Program.

          (m) All  work in  connection  with  the  development  of  Compound  or
     Products,  to the extent required by applicable laws or regulations,  shall
     be  conducted  in  accordance   with  Good   Laboratory   Practices,   Good
     Manufacturing  Practices  and Good  Clinical  Practices,  as such  rules of
     practice  are amended  from time to time.  Each Party in the conduct of its
     activities  shall comply with all applicable laws, rules and regulations of
     each  jurisdiction   within  the  Territory 

                                       19
<PAGE>

     that are applicable to the  development,  testing,  manufacture,  labeling,
     packaging,  storage,  marketing,  distribution,  sale,  promotion  and
     import or export of  Product.distribution,  sale, promotion and import
     or export of Product.


          (n) *



          Section 4.03 Marketing.  * JE and Agouron agree to the following basic
     approach to the marketing of Products in the Licensed Territory, and to the
     conduct  of  their  marketing  activities  in  their  respective  marketing
     territories.

         (a)      Agouron shall be responsible for *






         (b)      *




          (c) Agouron  shall keep JE informed of  Agouron's  current and planned
     marketing activities in the Licensed Territory. *

          JE shall keep Agouron informed of JE's marketing  activities in the JE
     Territory. *











          (d) Unless prohibited by law or regulation, the labeling for a Product
     in the countries in the Licensed Territory shall *

                                       20
<PAGE>




         (e)      *





          (f) Agouron and JE shall each use  qualified  persons in its marketing
     activities for a Product in its respective marketing territories.

          (g) Agouron shall be responsible for responding, in a timely manner, *















          (h) Each Party, its Affiliates and sublicensees, agrees throughout the
     duration of this Agreement to notify the other Party immediately in English
     of *













                                       21
<PAGE>









          (i) Each Party further agrees to immediately notify the other Party of
     any information *





          The information to be provided hereunder shall be provided in English.

          (j) Without  limiting the foregoing,  it is also  understood that each
     Party may notify its Affiliates or sublicensees of *

          Section  4.04  Supply  of  Compound.  It is  anticipated  that  timely
     development  of Compound  and/or a Product will require the  manufacture of
     significant  amounts  of  the  Compound,   and  that  successful  worldwide
     commercialization  of a Product will  require  annual  production  of large
     quantities of the Compound.

          (a) In accordance  with the provisions of Section 4.04,  Agouron shall
     purchase  from JE,  and JE shall  timely  deliver  Compound  for use in the
     development  and  Registration  activities  for  Compound  and/or  Product,
     including using Compound to make Product to be used in clinical studies and
     trials and for special license sales. *

















                                       22
<PAGE>





















          (b) In accordance  with the provisions of Section 4.04,  Agouron shall
     purchase  from JE, and JE shall timely  deliver  Compound for use in making
     the  finished  dosage  form(s)  of  Product  to be  sold  in  the  Licensed
     Territory, *


          (c) JE shall  maintain  books of account  and  complete  and  accurate
     records of all of its FBMCC of procuring and/or producing such Compound *












          (d) *







                                       23
<PAGE>







          (e) *


          (i)


          (ii)





          (iii)


                                       24
<PAGE>

                                                                                
          (iv) Sale and delivery of Compound  will be subject to an  agreed-upon
form of purchase order being issuedby Agouron and accepted by JE. *

                                                                                




          (v) *








          (vi) *











          (vii) *



          (f) *








                                       25
<PAGE>
 
               (i) *



               (ii) *

          (g) *















          Section 4.05 Supply of Product. The details for manufacturing  Product
     will be determined after the execution of this Agreement,  according to the
     following conditions:

          (a) Agouron shall be responsible for manufacturing Product.

          (b) *










          (c) *


                                       26
<PAGE>




          (d) *










         











          (e) *

                 (i)      *






                  (ii)     *







                                       27
<PAGE>



                  (iii)    *





                  (iv)     *










                  (v)      *




         (f)      *




         (g)      *












                                       28
<PAGE>




       (h)      *













                     ARTICLE V - ADVANCE PAYMENTS AND ROYALTIES

         Section 5.01      Advanced Payments and Royalties.

          (a)  Subject  to the terms and  conditions  of this  Agreement  and in
     consideration  for the  rights  granted to  Agouron  under this  Agreement,
     Agouron shall make the following one-time-only payments to JE:


 <TABLE>
<CAPTION>
                                                                                 PAYMENT
                          MILESTONE EVENT                                     (U.S. Dollars)
<S>                                                                            <C>                                <C>

 (i)  Within thirty (30)days of execution of this Agreement
      (actually paid July 17,  1998)                                           $6,000,000

 (ii) Within thirty (30) days of the earlier of: (1) the first completion
      of a Phase I Clinical Study for any Product;
      or (2) September 30, 2000*                                               $3,000,000

 (iii)Within thirty (30) days of the earlier of: (1)
      the first completion of a Pilot Phase II Study
      for any Product; or (2) December 31, 2000*                               $3,000,000

 (iv) Within thirty (30) days of first U.S. NDA or
      EMEA filing for any Product                                              $6,000,000


 (v)  Within thirty (30) days of first U.S. NDA
      approval for any Product                                                 $3,000,000

 (vi) Within thirty (30) days of the first European Commission
      approval for any Product (but not before receipt
      of pricing approval for such Product in
      at least one (1) Major Market European Country)                          $5,000,000

      TOTAL PAYMENTS:                                                         $26,000,000
         *    *

</TABLE>

                                       29
<PAGE>








*











         (b)      *





          (c) The Parties agree that the  calculation of the amount of royalties
     due shall be subject to and in accordance with the following provisions:

                  (i)      *




                  (ii)     *










                  (iii)    *







                                       30
<PAGE>






                  (iv)     *





                  (v)      *









                  (vi)     *











                  (vii)    *









                  (viii)   *




                                       31
<PAGE>























         Section 5.02      General Licensing Terms.

         (a)      *








          (b) The Parties  agree that the  accounting  and payment of  royalties
     shall comply with the following terms and conditions:

                  (i)      *




                  (ii)     *







                                       32
<PAGE>







                  (iii)    *











          (iv) Agouron shall maintain and cause its Affiliates and  sublicensees
     to maintain books of account and complete and accurate  records  pertaining
     to the sale or other disposition of Products and of the royalties and other
     amounts payable under this Agreement in sufficient detail to *






















                                       33
<PAGE>



         (c)      *





         (d)      *



         Section 5.03      Foreign Currency.

          (a) Net Sales and any milestone and royalty amounts shall be stated in
     United States dollars.  Remittal of milestone  payments and royalties shall
     be made in United States dollars. *






         (b)      *


















                         ARTICLE VI - TERM AND TERMINATION

         Section 6.01      Termination for Breach  *




                                       34
<PAGE>














         Section 6.02      Termination by Agouron.

         (a)      *

















         (b)      *












                                       35
<PAGE>

         (c)      *



          Section 6.03 Termination by Mutual  Agreement.  The Parties may at any
     time  terminate  this  Agreement,  in part or in its  entirety,  by  mutual
     written agreement.

          Section 6.04 Termination Upon  Bankruptcy..  In the event that a Party
     is  subject  to  any  proceeding  under  the  bankruptcy  laws,   including
     appointment of a receiver,  trustee,  liquidator or other  custodian of its
     business  or  substantially  all of its  assets,  and such  proceeding,  if
     involuntary,  is not dismissed or discharged within one hundred fifty (150)
     days  after  such  proceeding  is  instituted,  or  upon  the  liquidation,
     dissolution,  or winding up of its business,  then this  Agreement,  at the
     election of the other Party,  shall be terminated in its entirety for cause
     upon a notice in writing of at least  fifteen  (15) days from the Party who
     is not bankrupt or insolvent.

          Section 6.05 Disposition of Inventory In the event of the cancellation
     or  termination  of any  license  rights  with  respect to a  Product,  the
     inventory  of  such  Product  may  be  sold  for  up  to *  after  date  of
     cancellation or termination,  provided the required  payments,  if any, are
     paid thereon.

         Section 6.06      Effect of Termination.  *










                    ARTICLE VII - WARRANTIES AND COVENANTS;
                   INDEMNITIES; INSURANCE; DISPUTE RESOLUTION

         Section 7.01      Warranties and Covenants.

          (a) Each Party  represents and warrants to the other Party that it has
     the legal power,  authority  and right to enter into this  Agreement and to
     perform all of its respective  obligations set forth herein,  including the
     attachments hereto.


                                       36
<PAGE>


          (b) JE  acknowledges  and  represents  that  the  patents  and  patent
     applications  listed  in  Schedule  2  are  the  only  patents  and  patent
     applications included within the JE Patent Rights that are jointly owned by
     JE and a third  party,  and that such patents and patent  applications  are
     only subject to the  conditions and  restrictions  noted on Schedule 2 and,
     except as otherwise noted on Schedule 2, that the license of such JE Patent
     Rights to Agouron  under the terms of this  Agreement  do not  require  the
     consent of such joint owner. *

          (c) JE represents  and warrants that, as of the date this Agreement is
     executed,  it was not aware of the existence of any patent  applications or
     patents owned and Controlled by a third party covering  Compound that might
     materially  prevent  the  Parties  from  commercializing  Compound  in  the
     Licensed  Territory,  except for the patent  application listed in Schedule
     7.01(c).

          (d) JE represents and warrants that: (i) it has the right to grant the
     licenses  set forth in Article  II; and (ii) there are no suits,  claims or
     proceedings  pending in any court or by or before any governmental  body or
     agency with  respect to the JE Patent  Rights or JE  Technology  that would
     materially  interfere  with the  ability of Agouron to fully  exercise  the
     licenses  granted  to it under  this  Agreement,  including  the  exclusive
     license rights under Section 2.01(a).  Agouron represents that, to the best
     of its knowledge, it does not have any know-how, trade secret, experimental
     data, formula, expert opinion, experimental procedure or other confidential
     and/or  proprietary  information   specifically  concerning  the  Compound,
     intermediates thereof, or a Product that was developed or acquired by or on
     behalf of  Agouron  before the  Effective  Date of this  Agreement  that is
     necessary for either:  (i)  the  formulation  (including  sustained-release
     formulations),  manufacture,  use and/or  application of Product;  or (ii)
     obtaining  Registration  of  Product,   including,   but  not  limited  to,
     information  and data  arising  out of  pre-clinical  and  clinical  trials
     involving Product and all NDA applications for Product,  and which is under
     the Control of Agouron.

          (e) Each Party  covenants  that it shall not commit any act or fail to
     take any action that, in any significant way, would be in conflict with its
     material obligations under this Agreement and the attachments hereto.

          (f) Each Party  promises to comply in all material  respects  with the
     terms of the  licenses  granted  to it under this  Agreement,  and with all
     federal, state, local and foreign laws, rules and regulations applicable to
     the development, manufacture,  distribution, import and export, and sale of
     pharmaceutical products pursuant to this Agreement.

          (g) EXCEPT AS OTHERWISE EXPRESSLY PROVIDED IN THIS AGREEMENT,  EACH OF
     THE PARTIES MAKES NO WARRANTIES,  EXPRESSED OR IMPLIED,  OF MERCHANTABILITY
     OR FITNESS FOR A PARTICULAR  PURPOSE OF ANY SUBJECT MATTER  INCLUDED WITHIN
     THE  CLAIMS OF THE PATENT  RIGHTS,  INCLUDING  THE  COMPOUND.  THE  PARTIES
     UNDERSTAND AND AGREE THAT  DEVELOPMENT  AND  COMMERCIALIZATION  OF COMPOUND
     AND/OR PRODUCTS WILL INVOLVE APPROVAL BY REGULATORY  AUTHORITIES,  AND THAT
     NO  PARTY IS  GUARANTEEING  THE  SAFETY  OR  EFFICACY  OF  COMPOUND  AND/OR
     PRODUCTS,  



                                       37
<PAGE>

    OR THAT  COMPOUND  AND/OR  PRODUCTS  WILL  RECEIVE THE  REQUIRED APPROVALS.


         Section 7.02      Indemnities; Insurance.


          (a) Agouron shall  indemnify and hold harmless JE and its  Affiliates,
     employees,  and agents (a "JE Indemnified  Party") from and against any and
     all liabilities,  losses, damages, costs, or expenses (including reasonable
     investigative  and  attorneys'  fees)  which the JE  Indemnified  Party may
     incur, suffer or be required to pay resulting from or arising in connection
     with any product  liability or other  claims  (other than claims for patent
     infringement)  arising  from the use by any person of any  Product,  to the
     extent such product  liability or other claim  results from the  negligent,
     reckless  or   intentional   misconduct  of  Agouron,   its  Affiliates  or
     sublicensees,  or their respective  employees and agents,  or on account of
     Agouron's  failure to fulfill its  obligations or  undertakings  under this
     Agreement; provided, however, that in no event shall Agouron be liable to a
     JE Indemnified Party for any indirect, incidental, special or consequential
     damages, including loss of revenues or profits from sales of Products.

          (b) JE shall  indemnify and hold harmless  Agouron and its Affiliates,
     employees, and agents (an "Agouron Indemnified Party") from and against any
     and  all  liabilities,  losses,  damages,  costs,  or  expenses  (including
     reasonable  investigative and attorneys' fees) that the Agouron Indemnified
     Party may incur, suffer or be required to pay, resulting from or arising in
     connection  with any product  liability or other claims  (other than claims
     for patent infringement) arising from the use by any person of any Product,
     to the extent  such  product  liability  or other  claim  results  from the
     negligent,  reckless or  intentional  misconduct  of JE, its  Affiliates or
     sublicensees,  or their respective  employees and agents,  or on account of
     JE's  failure  to  fulfill  its  obligations  or  undertakings  under  this
     Agreement;  provided,  however,  that in no event  shall JE be liable to an
     Agouron  Indemnified  Party  for  any  indirect,   incidental,  special  or
     consequential damages,  including loss of revenues or profits from sales of
     Products.

          (c) To the extent that a product  liability or other claim (other than
     a claim for patent  infringement)  results from the negligent,  reckless or
     intentional   misconduct  of  more  than  one  Party,   their   Affiliates,
     sublicensees,  or their respective  employees and agents, the Parties agree
     to share in an equitable manner such liabilities,  losses,  damages, costs,
     or expenses in  proportion  to the  relative  fault of each of the Parties,
     their Affiliates, sublicensees, or their respective employees and agents.

          (d) Unless the Parties agree otherwise, all other liabilities, losses,
     damages,  costs,  or  expenses  (including  reasonable   investigative  and
     attorneys' fees) under this Section 7.02 relating to or involving a Product
     in a country, except as provided by the terms of Sections 7.02(a),  (b) and
     (c),  shall be the  responsibility  of the Party  marketing such Product in
     such country.  The Party  marketing a Product in a country shall  indemnify
     the  non-marketing  Party  in such  country  from and  against  any and all
     liabilities,  losses,  damages,  costs, or expenses  (including  reasonable
     investigative  and  attorneys'  fees)  which such  non-marketing  Party may
     incur, suffer or be required to pay resulting from or arising in connection
     with any product  liability or other  claims  (other than claims for patent
     infringement)  arising  from the use by any person of such  Product in

                                       38
<PAGE>

     such country. Section 3.02 sets forth the Parties' liability obligations 
     arising from claims for patent infringement.


          (e) The  aforesaid  obligations  of the  indemnifying  Party  shall be
     subject to the indemnified Party fulfilling the following obligations:

          (i) The indemnified  Party shall fully cooperate with the indemnifying
     Party in the defense of any claims,  actions,  etc., which defense shall be
     controlled by the indemnifying Party.

          (ii)  The  indemnified  Party  shall  not,  except  at its  own  cost,
     voluntarily make any payment or incur any expense with respect to any claim
     or suit without the prior written consent of the indemnifying  Party, which
     consent such Party shall not be required to give.

          (iii) The  indemnified  Party  shall  notify  the  indemnifying  Party
     promptly after receipt of a notice of the commencement of any litigation or
     threat thereof that may reasonably lead to a claim for indemnification.

          (f) The  Parties  agree to  maintain  appropriate  amounts  of product
     liability  insurance  coverage  and to have the other Party  included as an
     additional insured on such policies.

          Section 7.03 Dispute  Resolution.  In the event of any  controversy or
     claim arising out of or relating to any provision of this  Agreement or any
     term or condition  hereof, or the performance by a Party of its obligations
     hereunder,  the  Parties  shall try to settle  their  differences  amicably
     between  themselves.  If the  representatives  of the Parties are unable to
     reach  agreement  on any such  issue,  the  issue  shall be  submitted  for
     consideration, in the case of Agouron, to a designee of its Chief Executive
     Officer and, in the case of JE, to a designee of its  Managing  Director of
     Pharmaceuticals and Biobusiness  Division.  If such designees are unable to
     agree,  then the issue shall be  resolved,  in the case of Agouron,  by its
     Chief Executive Officer and, in the case of JE, by its Managing Director of
     Pharmaceuticals  and Biobusiness  Division.  Any unresolved  issues arising
     between the Parties  relating to,  arising out of, or in any way  connected
     with this Agreement or any term or condition  hereof, or the performance by
     a Party of its obligations  hereunder,  whether before or after termination
     of this Agreement, except as otherwise provided in this Agreement, shall be
     finally resolved by binding  arbitration.  Whenever a Party shall decide to
     institute  arbitration  proceedings,  it shall give written  notice to that
     effect to the other Party.  The Party giving such notice shall refrain from
     instituting  the  arbitration  proceedings  for a period of sixty (60) days
     following such notice.  If JE is the Party initiating the arbitration,  the
     arbitration shall be held in San Diego, California,  according to the rules
     of the American  Arbitration  Association  ("AAA"). If Agouron is the Party
     initiating the arbitration,  the arbitration shall be held in Tokyo, Japan,
     according  to the rules of the  Japan  Commercial  Arbitration  Association
     "JCAA").  The  arbitration  shall  be  conducted  by a  single  arbitrator
     mutually  chosen by the Parties.  If the Parties cannot agree upon a single
     arbitrator   within  fifteen  (15)  days  after  the   institution  of  the
     arbitration proceeding,  then the arbitration shall be conducted by a panel
     of three  arbitrators  appointed in accordance  with applicable AAA or JCAA
    

                                       39
<PAGE>

     rules;  provided,  however,  that each Party shall, within thirty (30) days
     after  the  institution  of  the  arbitration   proceedings,   appoint  one
     arbitrator  with  the  third  arbitrator  being  chosen  by the  other  two
     arbitrators. If only one Party appoints an arbitrator, then such arbitrator
     shall be entitled to act as the sole arbitrator to resolve the controversy.
     Any arbitration  hereunder shall be conducted in the English  language,  to
     the maximum  extent  possible.  All  arbitrator(s)  eligible to conduct the
     arbitration must agree to render their opinion(s)  within  thirty (30) days
     of  the  final  arbitration  hearing.  The  arbitrator(s)  shall  have  the
     authority  to grant  injunctive  relief  and  specific  performance  and to
     allocate  between the Parties the costs of  arbitration  in such  equitable
     manner as he/she determines;  provided, however, that each Party shall bear
     its own costs and attorneys' and witness' fees.  Notwithstanding  the terms
     of this Section 7.03, a Party shall also have the right to obtain, prior to
     the arbitrator(s) rendering the arbitration decision, provisional remedies,
     including  injunctive relief or specific  performance,  from a court having
     jurisdiction  thereof.  The arbitrator(s) shall, upon the request of either
     Party,  issue a written  opinion of the findings of fact and conclusions of
     law and  shall  deliver  a copy to each of the  Parties.  Decisions  of the
     arbitrator(s) shall be final and binding on all of the Parties. Judgment on
     the award so  rendered  may be  entered  in any court  having  jurisdiction
     thereof.

                        ARTICLE VIII - DISCLOSURE OF AGREEMENT

               Section 8.01  Disclosure of Agreement  Except as agreed to by the
          Parties,  and as  required  for  the  performance  of its  obligations
          hereunder, neither JE nor Agouron shall release any information to any
          third party with respect to any of the terms of this Agreement without
          the prior written consent of the other Party,  which consent shall not
          unreasonably  be  withheld.  This  prohibition  includes,  but  is not
          limited to, press releases,  educational  and scientific  conferences,
          promotional  materials  and  discussions  with the media.  The Parties
          shall jointly prepare and release a public announcement  regarding the
          existence of this Agreement. If a Party determines that it is required
          by law,  including  securities  laws  and  regulations  pertaining  to
          publicly traded companies,  to release  information to any third party
          regarding the terms of this Agreement, it shall notify the other Party
          of this fact prior to  releasing  the  information.  The notice to the
          other Party shall  include the text of the  information  proposed  for
          release.  The other  Party  shall  have the  right to confer  with the
          notifying  Party  regarding the necessity for the  disclosure  and the
          text of the information  proposed for release, but the notifying Party
          shall have the  discretion  to  release  the  information  as it deems
          necessary to fulfill its requirements under law.  Notwithstanding  the
          preceding,  JE and Agouron  shall each have the right to disclose  the
          terms of this  Agreement to persons it proposes to enter into business
          relationships with, if such persons are subject to confidentiality and
          use obligations equivalent to those applicable to the disclosing Party
          hereunder.

                       ARTICLE IX - GENERAL PROVISIONS

               Section  9.01 No  Implied  Licenses  Only  the  licenses  granted
          pursuant to the express terms of this Agreement  shall be of any legal
          force and effect. No license rights shall be created by implication or
          estoppel.

                                       40
<PAGE>

               Section  9.02 No Waiver Any  failure  by a Party to  enforce  any
          right which it may have  hereunder in any instance shall not be deemed
          to waive any right  which it or the other  Party may have in any other
          instance  with respect to any provision of this  Agreement,  including
          the provision which such Party has failed to enforce.

               Section 9.03 Severability; Government Acts. In the event that any
          provision  of  this  Agreement  is  judicially,   or  by  a  competent
          authority,  determined to be unenforceable,  in part or in whole, with
          regard to any or all of the countries in the Territory,  the remaining
          provisions or portions of this Agreement shall be valid and binding to
          the  fullest  extent  possible,  and the  Parties  shall  endeavor  to
          negotiate  additional terms, as feasible,  in a timely manner so as to
          fully  effectuate  the original  intent of the Parties,  to the extent
          possible,  in the  applicable  countries.  In the event  that any act,
          regulation, directive, or law of a country, including its departments,
          agencies  or courts  should make  impossible  or  prohibit,  restrain,
          modify or limit any material act or  obligation  of a Party under this
          Agreement,  and if any Party to this Agreement is materially adversely
          affected thereby, the Parties shall attempt in good faith to negotiate
          a  lawful  and   enforceable   modification  to  this  Agreement  that
          substantially  eliminates the material adverse effect;  provided that,
          failing any  agreement  in that  regard,  the Party who is  materially
          adversely  affected shall have the right, at its option, to suspend or
          terminate this Agreement as to such country.

               Section 9.04 Ambiguities.  Ambiguities, if any, in this Agreement
          shall not be construed against any Party,  irrespective of which Party
          may be deemed to have authored the ambiguous provision.

               Section  9.05  Notification  and  Governmental  Approvals.  After
          execution of this Agreement,  to the extent required by law,  Agouron,
          after  consultation with JE, shall notify the appropriate  authorities
          in the Licensed Territory about the terms of this Agreement; JE, after
          consultation with Agouron, shall notify the appropriate authorities in
          the JE  Territory  about the terms of this  Agreement.  JE and Agouron
          shall  obtain  any  government  approval(s)  required  to enable  this
          Agreement to become  effective,  or to enable any payment hereunder to
          be  made,  or  any  other  obligation  hereunder  to  be  observed  or
          performed.  Third-party  costs  and  expenses  incurred  in  notifying
          governmental  authorities or obtaining  governmental approval shall be
          shared  equally  between the Parties.  Each Party shall keep the other
          Party  informed  of  its  progress  in  notifying  such   governmental
          authorities  and  obtaining  such  government   approval,   and  shall
          cooperate with the other Party in any such efforts.

               Section 9.06 U.S.  Export  Controls  The Parties  agree to comply
          with the United  States  laws and  regulations  governing  exports and
          re-exports  of  the   Compound,   intermediates   thereof,   Products,
          Development Program Technology,  JE Technology or any other technology
          or software developed or disclosed as a result of this Agreement.  The
          Parties  acknowledge  that any  performance  under this  Agreement  is
          subject to any restrictions  which may be imposed by the United States
          laws and  regulations  governing  exports and  re-exports.  Each Party
          agrees to  provide  the other  Party with any  reasonable  assistance,
          including  written  assurances  which may be  required  by a competent
          governmental  authority and by applicable  laws and  regulations  as a
          precondition for any disclosure of technology or software by the other
          Party  under  the terms of 


                                       41
<PAGE>

          this  Agreement.  The  obligations  of this Section  9.06  shall 
          survive   termination   or  expiration  of  this Agreement.

               Section 9.07 No Agency.  JE and Agouron  shall have the status of
          independent  contractors under this Agreement and, except as otherwise
          explicitly provided in this Agreement, nothing in this Agreement shall
          be construed as an  authorization of a Party to act as an agent of the
          other Party.

               Section 9.08 Captions; Number; Official Language. The captions of
          the  articles  and  sections  of  this   Agreement   are  for  general
          information  and  reference  only,  and this  Agreement  shall  not be
          construed by  reference to such  captions.  Where  applicable  in this
          Agreement,  the singular  includes  the plural and vice versa.  To the
          extent  appropriate,  the  meaning of terms  whose  first  letters are
          capitalized,  but  which  are  variations  of terms  that are  defined
          elsewhere in this  Agreement,  shall each have the same meaning as the
          defined term. English shall be the official language of this Agreement
          and  any  license   agreement   provided   for   hereunder,   and  all
          communications  between the Parties  hereto shall be conducted in that
          language.

               Section 9.09 Force  Majeure.  A Party shall not be responsible to
          the  other  Party  for  any  failure,  delay  or  interruption  in the
          performance  of any of its  obligations  under this  Agreement if such
          failure,   delay  or  interruption  is  caused  by  any  act  of  God,
          earthquake,  fire, casualty, flood, war, epidemic, riot, insurrection,
          or any act,  exercise,  assertion  or  requirement  of a  governmental
          authority,  or other cause beyond the reasonable  control of the Party
          affected  if the Party  affected  shall have used its best  efforts to
          avoid such occurrence. If a Party believes that the performance of any
          of  its   obligations   under  this  Agreement  shall  be  delayed  or
          interrupted  as a result of any of the reasons  stated in this Section
          9.09,  and  provided  such Party is able to do so,  such  Party  shall
          promptly notify the other Party of such delay or interruption  and the
          cause  therefor,  and shall provide such other Party with its estimate
          of when the performance of its obligations shall recommence.  When the
          Party  affected is able to recommence  the  performance of obligations
          delayed or  interrupted  as a result of any of the  reasons  stated in
          this Section 9.09,  it shall so notify the other Party and,  except as
          otherwise  provided in this  Agreement,  it shall promptly  resume the
          performance of such obligations.

               Section   9.10   Amendment.   This   Agreement,   including   the
          Attachments, Exhibits and Schedules, constitutes the full agreement of
          the Parties with respect to the subject matter of this Agreement,  and
          incorporates any prior  discussions  between them with respect to such
          subject matter.  This Agreement  supersedes the rights and obligations
          of JE and Agouron under the Confidential  Disclosure Agreement and the
          Material  Transfer  Agreement  between  the  Parties  which  were both
          originally   entered  into  on  December  22,  1997.  This  Agreement,
          including the attachments hereto,  shall not be amended,  supplemented
          or otherwise  modified,  except by an instrument in writing  signed by
          duly authorized officers of the Parties.

               Section 9.11  Applicable  Law. This Agreement  shall be construed
          and the rights of the Parties shall be  determined in accordance  with
          the laws of  Japan;  provided,  however,  that  with  regard to issues
          concerning the validity and  construction  of patents,  trademarks and
          other  


                                       42
<PAGE>

          intellectual  property,  the  rights  of the  Parties  shall be
          determined in accordance with the laws of the country under which such
          intellectual   property   rights   were   granted.under   which   such
          intellectual property rights were granted.

               Section  9.12  Notices.  Any notice  required or  permitted to be
          given under this  Agreement  shall be in writing and shall be given in
          person,  delivered by recognized  overnight delivery service,  sent by
          mail  (certified or registered,  or air mail for addresses  outside of
          the  continental  U.S.),  or by  telefax  (or other  similar  means of
          electronic  communication),  whose  receipt is confirmed by confirming
          telefax, and addressed, in the case of JE, to its Managing Director of
          Pharmaceuticals and Biobusiness  Division and, in the case of Agouron,
          to the Senior  Vice President,  Commercial Affairs (with a copy to the
          Legal  Department),  at the  addresses  shown at the beginning of this
          Agreement,  or such  other  person  and/or  address  as may have  been
          furnished in writing to the  notifying  Party in  accordance  with the
          provisions of this Section 9.12. Except as otherwise  provided herein,
          any notice shall be deemed delivered upon the earliest of:  (i) actual
          receipt; (ii) four (4) business days after delivery to such recognized
          overnight  delivery  service;  (iii)  eight (8)  business  days  after
          deposit in the mail;  or  (iv) the  date of receipt of the  confirming
          telefax.

               Section 9.13 Assignment.  This Agreement shall be assignable by a
          Party to its  Affiliates;  if this Agreement is assigned by a Party to
          an  Affiliate,  the Party  shall still be  responsible  for all of its
          obligations as specified in this Agreement.  This Agreement shall only
          be  assignable  by a Party to a  non-Affiliated  third  party with the
          prior  written  consent  of the  other  Party,  which  consent  may be
          withheld  at the  sole  discretion  of  such  other  Party.  Any  such
          assignment  without the prior written consent of the other Party shall
          be void. Notwithstanding the preceding, in the event of: (i) a sale or
          transfer of all or substantially  all of a Party's assets; or (ii) the
          merger  or  consolidation  of  a  Party  with  another  company,  this
          Agreement shall be assignable to the transferee or successor company.

               Section 9.14 Succession. This Agreement shall be binding upon all
          successors   in   interest,   assigns,   trustees   and  other   legal
          representatives of the Parties.

                                       43
<PAGE>

               IN  WITNESS  WHEREOF,  the  Parties  hereto  have  executed  this
          Agreement at a formal signing  ceremony on July 28, 1998, in duplicate
          originals, by their respective officers thereunto duly authorized.

JAPAN ENERGY CORPORATION             AGOURON PHARMACEUTICALS, INC.


By:      /s/  Akihiko Nimoyama       By:      /s/ Peter Johnson
Name:    Akihiko Nimoyama            Name:    Peter Johnson
Title:   Representative Director and Title:   Chief Executive Officer
         President                            and President

By:      /s/ Ken Irino               By:      /s/ Gary Friedman
Name:    Ken Irino                   Name:    Gary E. Friedman, Esq.
Title:   Senior Management Director  Title:   Corporate V.P. and General Counsel




WITNESSED BY:

By:      /s/ Toshinobu Miyake                  By:      /s/ R. Kent Snyder
Name:    Toshinobu Miyake                      Name:    R. Kent Snyder
Title:   Assoc. Dir., General Mgr. of          Title:   Senior Vice President
         Coordination                                   Business Development
         Pharmaceuticals & Biobusines
         Division
                                   

                                       44
<PAGE>

                                      S1-1
                                   SCHEDULE 1

                       JE PATENTS AND PATENT APPLICATIONS


                                       *

                                      S1-1
<PAGE>




















                                      S2-1
                                   SCHEDULE 2

                                        *

                                      S2-1
<PAGE>

                                        *


                                   
                                SCHEDULE 7.01(c)

                                        *
                                  

                                   S7.01(c)-1
<PAGE>
                                        *

                                    EXHIBIT 1

                               DEVELOPMENT PROGRAM


                                *


                                      E1-1
<PAGE>
                                 
                                  ATTACHMENT 1

                                TRADEMARK LICENSE


                                        *

                                      A1-1

                              

                         COMMON STOCK PURCHASE AGREEMENT


       This Common Stock Purchase  Agreement  ("Agreement")  is made and entered
into as of June 11,  1998 by and  between THE IMMUNE  RESPONSE  CORPORATION.,  a
Delaware  corporation  (hereinafter  referred  to as the  Company)  and  AGOURON
PHARMACEUTICALS,  INC.,  a California  corporation  ("Agouron"),  which  parties
hereby agree as follows:

1.     Authorization; Commitment; Closing

       1.01 Authorization.  The Company proposes to authorize, issue and sell to
Agouron on or before  January 15,  2000,  certain  amounts of its common  stock,
$.0025 par value ("Common Stock"), as described and determined below.

       1.02  Commitment.  Subject to Paragraph 5.06 and the terms and conditions
hereof and on the basis of the  representations  and warranties  hereinafter set
forth,  the Company  agrees to issue and sell to Agouron,  and Agouron  agree to
purchase  from the Company as of the dates and for the  consideration  set forth
below, the number of shares of the Company's  Common Stock as determined  below.
The Common  Stock  which  Agouron  is  acquiring  pursuant  to the terms of this
Agreement is hereinafter  referred to as "Restricted  Common Stock".  Agouron is
hereinafter  sometimes  referred to as the  "Purchaser."  The  purchases  of the
Common Stock shall occur on the seven  purchase  dates set forth below.  On each
purchase  date,  Agouron  shall be entitled to acquire  such number of shares of
Restricted  Common  Stock  (rounded  up to the  nearest  whole  share) as may be
purchased for  $2,000,000,  at a purchase  price equal to the stated premium set
forth  opposite the applicable  purchase  date,  over the then fair market value
("FMV") of the Common Stock on The NASDAQ Stock Market.  FMV shall be defined as
the average closing price of the Common Stock on The NASDAQ Stock Market for the
five (5) trading days immediately preceding the referenced purchase date. In the
event  the  FMV is  *                      on any  purchase  date,  the  premium
applicable to such purchase date shall be adjusted to *  

<TABLE>
<CAPTION>
                 
                  Purchase Date                      Purchase Price                    *
                  -------------                      --------------
                  <S>                                 <C>                                <C>

                  June 11, 1998                      $2,000,000                           *
                  October 15, 1998                   $2,000,000                           *
                  January 15, 1999                   $2,000,000                           *
                  April 15, 1999                     $2,000,000                           *
                  July 15, 1999                      $2,000,000                           *
                  October 15, 1999                   $2,000,000                           *
                  January 15, 2000                   $2,000,000                           *

</TABLE>

       1.03  Closing.  Separate  closings  of  the  purchase  and  sale  of  the
Restricted Common Stock  ("Closings")  shall occur on each of the purchase dates
set forth  above and shall take place at such time and place as the  Company and
Purchaser  shall agree.  At each Closing the Company  shall deliver to Purchaser
the number of shares of  Restricted  Common Stock  required by  Paragraph  1.02,
above,  upon  delivery to the Company by Purchaser of a certified  check or wire
transfer of funds in the amount of $2,000,000. The Restricted Common Stock to be
delivered  to Agouron  hereunder  at each  Closing will be evidenced by a single
certificate


<PAGE>


registered  in  Agouron's  name or in the name of such  nominee as  Agouron  may
specify and, when issued in accordance  with the terms of this Agreement for the
consideration  expressed herein, will be duly authorized,  validly issued, fully
paid,  nonassessable  and free and clear of any liens or encumbrances  caused or
created by the Company (except that such Restricted  Common Stock of the Company
will be subject to restrictions  on transfer under federal and applicable  state
securities laws).

2.     Representations

       2.01  Representations of the Company. The Company represents and warrants
as follows:

                  (a) The  Company  is a  corporation  duly  organized,  validly
                  existing and in good  standing  under the laws of the State of
                  Delaware and has all requisite  power and authority  which are
                  necessary to own and operate its business and  properties  and
                  to carry on its business as it is being conducted. The Company
                  is duly  licensed and  qualified  and in good  standing in the
                  State of California and in such other  jurisdictions  in which
                  the  ownership  or lease of  property  or the  conduct  of its
                  business makes such licensing or qualification necessary.

                  (b) There are no  proceedings  pending or, to the knowledge of
                  the Company,  threatened  against or affecting  the Company in
                  any court or before any  governmental  authority  or agency or
                  arbitration board or tribunal which involve the possibility of
                  materially and adversely  affecting the properties,  business,
                  prospects  or  condition   (financial  or  otherwise)  of  the
                  Company.

                  (c) The issuance and sale of the  Restricted  Common Stock and
                  compliance  by the Company with all of the  provisions of this
                  Agreement are within the  corporate  powers of the Company and
                  have been duly  authorized by all proper  corporate  action on
                  the part of the  Company  and will  not (i)  conflict  with or
                  result  in any  breach  of any of  the  terms,  conditions  or
                  provisions  of, or  constitute a default under the Articles of
                  Incorporation  of the  Company or the  Bylaws of the  Company,
                  (ii)  conflict  with or  result  in any  breach  of any of the
                  terms,  conditions or  provisions  of, or constitute a default
                  under or give any party the right to terminate  or  accelerate
                  performance  under any other  agreement or instrument to which
                  the Company is a party (iii)  require  consent under any other
                  contract to which the  Company is a party,  (iv) result in the
                  creation or imposition of any lien, charge or encumbrance upon
                  any property or assets of the Company pursuant to the terms of
                  any  other  contract  to which the  Company  is a party or (v)
                  conflict  with  any  provision  of  any  applicable  judgment,
                  decree,  order,  statute,  rule, or regulation of any court or
                  any public,  governmental or regulatory  agency or body having
                  jurisdiction over the Company.

                  (d) This  Agreement  is a valid and binding  agreement  of the
                  Company and is  enforceable  against the Company in accordance
                  with the terms hereof,  except as such  enforceability  may be
                  affected by applicable bankruptcy laws and equitable remedies.


                                       2
<PAGE>

                  (e) The  authorized  capital stock of the Company  consists of
                  5,000,000  shares of  preferred  stock  (preferred  stock) and
                  40,000,000 shares of common stock. As of the date hereof,  200
                  shares  of  its  Series  F  Convertible  Preferred  Stock  are
                  outstanding.  This preferred stock is convertible  into common
                  stock initially at a conversion price equivalent to $14.07 per
                  share of common stock. If the Company's  common stock does not
                  trade at prices  higher than $14.07 per share over a period of
                  time, the conversion price will be adjusted  downward on April
                  24, 1999 (or sooner if the Company issues common stock at less
                  than $14.07 per share) and quarterly thereafter. As of June 9,
                  1998,   22,900,350   shares   of  voting   common   stock  are
                  outstanding.  As of the date hereof,  4,497,749  stock options
                  issued  pursuant to the  Company's  stock option plans and two
                  (2) warrants to purchase a total of 2,051,281 shares of voting
                  stock are outstanding.  Up to 6,180,000 shares of common stock
                  may be issued under the Company's  stock option plans.  Except
                  as set  forth  above,  there are no other  options,  warrants,
                  conversion  privileges,  preemptive rights, or rights of first
                  refusal  granted by the  Company in favor of any other  person
                  presently  outstanding  or in existence to purchase or acquire
                  any  of  the  authorized  but  unissued  Common  Stock  of the
                  Company, other than any of such items granted pursuant to this
                  Agreement. The Company has provided to Purchaser copies of its
                  currently in effect Articles of Incorporation and Bylaws,  its
                  Form  10-K for the year  ended  December  31,  1997,  its 1997
                  Annual Report,  its Proxy  statement  dated April 27, 1998 and
                  its Form  10-Q for the  quarter  ended  March  31,  1998.  The
                  Company  warrants  that  the  information  contained  in  such
                  documents as updated and supplemented prior to the date of the
                  Closing is true and correct and when taken as a whole does not
                  omit  a fact  necessary  to  make  the  information  contained
                  therein in light of the circumstance under which the documents
                  were made (taking into account,  without limitation,  the type
                  of  transaction   contemplated   by  this  Agreement  and  the
                  sophistication  and nature of the Purchaser),  not misleading.
                  The Company  acknowledges that the Purchaser is relying on the
                  written documentation  provided by the Company to Purchaser as
                  described  above  in  making  its  decision  to  purchase  the
                  Restricted Common Stock.

                  (f) Since March 31, 1998, except for the sale of 200 shares of
                  Series F Convertible  Preferred  Stock for $10 million,  there
                  has not been any change in the assets, liabilities,  financial
                  condition or  operations  of the Company other than changes in
                  the ordinary course of business, none of which individually or
                  in the aggregate  have had a material  adverse  affect on such
                  assets, liabilities,  financial condition or operations of the
                  Company.

       2.02  Representations  of the  Purchaser.  The Purchaser  represents  and
warrants as follows:

                  (a) It is the intent of the Purchaser that its purchase of the
                  Restricted  Common Stock  contemplated by this Agreement shall
                  constitute a transaction  exempt from  registration  under the
                  Securities Act of 1933, as amended (the "Securities  Act") and
                  any applicable state securities laws.

                                       3
<PAGE>

                  (b)  Purchaser  will not offer or sell any  Restricted  Common
                  Stock except pursuant to an effective  registration  statement
                  under  the  Securities  Act or in  transactions  which  do not
                  require registration under the Securities Act.

                  (c)  Purchaser is a  corporation  duly  organized  and validly
                  existing  under the laws of the State of California is in good
                  standing  under  such  laws  and has all  requisite  corporate
                  powers and authority to enter into this Agreement.

                  (d) On or prior to the date of the initial Closing,  Purchaser
                  will have taken all action  necessary  for the  authorization,
                  execution, delivery and performance of this Agreement.

                  (e) Purchaser has (i) reviewed this Agreement, and the written
                  statements, and documents, delivered to Purchaser as described
                  in Section 2.01(e);  and, (ii) received  satisfactory response
                  from the  Company  as to matters  about  which  Purchaser  has
                  inquired  relating  to this  Agreement,  and  other  documents
                  described  in Section  2.01(e) and  relating to the  Company's
                  business  condition,  prospects  and  plans  as  necessary  to
                  evaluate  the merits  and risks of  acquiring  the  Restricted
                  Common   Stock.   Purchaser  has  informed  the  Company  that
                  Purchaser is relying on all such  information and documents in
                  making its decision to purchase the Restricted Common Stock.

                  (f) Purchaser (i) has had the risks involved in the investment
                  represented  by this Agreement  explained;  (ii) has knowledge
                  and  experience in financial and business  matters to evaluate
                  the merits  and risks of the  investment  represented  by this
                  Agreement;  (iii)  is able to bear  the  economic  risk of the
                  investment represented by this Agreement (including a complete
                  loss of this  investment);  and (iv) has determined  that this
                  investment is suitable for  Purchaser in light of  Purchaser's
                  financial     circumstances    and    available     investment
                  opportunities.

                  (g) Purchaser is acquiring the Restricted Common Stock for its
                  own  account  and with its  general  assets for the purpose of
                  investment  and not  with a view to the  resale,  transfer  or
                  distribution thereof, and has no present intention of selling,
                  transferring,   negotiating  or  otherwise  disposing  of  any
                  Restricted  Common  Stock.  Notwithstanding  anything  in this
                  Agreement  to the  contrary,  it is agreed that the  Purchaser
                  shall  have the  right to assign or  transfer  the  Restricted
                  Common Stock to its Affiliates at any time without the consent
                  of the Company.

3.  Non-Disclosure.  Except as agreed to by the parties  neither the Company nor
the Purchaser  shall release any  information to any third party with respect to
any of the terms of this  Agreement  without  the prior  written  consent of the
other,  which  consent  shall not  unreasonably  be withheld.  This  prohibition
includes,  but is not limited to,  press  releases,  promotional  materials  and
discussions with the media. If the Company determines that it is required by law
to release information to any third party regarding the terms of this Agreement,
it shall notify the Purchaser of this fact prior to releasing  the  information.
The notice to the Purchaser shall include the text of the  information  proposed
for  release.  The  Purchaser  shall

                                       4
<PAGE>


have the  right to confer  with the  Company  regarding  the  necessity  for the
disclosure and the text of the information proposed for release.

4.     Compliance with Securities Act

       4.01 Certain Definitions.  As used herein, the following terms shall have
the following respective meanings:

                  (a)  Commission.   Shall  mean  the  Securities  and  Exchange
                  Commission,   or  any  other   Federal   agency  at  the  time
                  administering  the Securities Act or the Trust  Indenture Act,
                  as the case may be.

                  (b) Securities  Act. Shall mean the Securities Act of 1933, as
                  amended,  or any similar  Federal  statute,  and the rules and
                  regulations  of the  Commission  thereunder,  all as the  same
                  shall be in effect at the relevant time.

                  (c) Exchange Act.  Shall mean the  Securities  Exchange Act of
                  1934,  as amended,  or any similar  Federal  statute,  and the
                  rules and regulations of the Commission thereunder, all as the
                  same shall be in effect at the relevant time.

                  (d)  Restricted  Common Stock.  Shall mean the Common Stock of
                  the Company issued and sold pursuant to this  Agreement  which
                  by the terms  hereof is required to bear the legend  specified
                  in Section 4.02 hereof.

       4.02 Restriction of Transferability;  Legend. Shares of Restricted Common
Stock shall not be resold or transferred  unless registered under the Securities
Act or unless an  exemption  from  registration  is  available  for such sale or
transfer.  The conditions specified below are intended to ensure compliance with
the provisions of the  Securities Act in respect of any transfer of stock.  Each
certificate for shares of Restricted  Common Stock shall be stamped or otherwise
imprinted with a legend in substantially the following form:

                           The shares  evidenced  by this  certificate  have not
                           been registered  under the Securities Act of 1933, as
                           amended,  and may not be sold or  transferred  in the
                           absence  of  such   registration   or  an   exemption
                           therefrom  under said Securities Act and the transfer
                           of such  shares is  subject  to terms and  conditions
                           specified  in the  Common  Stock  Purchase  Agreement
                           dated as of June 11,  1998,  between  the Company and
                           Agouron Pharmaceuticals, Inc.

If shares of Restricted Common Stock evidenced by certificates  bearing a legend
required  by this  Section  4.02  are  sold in  accordance  with a  registration
statement which has become effective under the Securities Act, or if the Company
shall  receive an opinion of its counsel to the effect that any legend  required
under this  Section  4.02 is not, or is no longer,  necessary  or required  with
respect  to  such  shares  (including,   without  limitation,   because  of  the
availability  of the  exemption  afforded by Rule 144 of the  General  Rules and
Regulations  of the  Commission),  the  Company  shall,  or shall  instruct  its
transfer  agent and registrar  to, remove such legend or issue new  certificates
without such legend in lieu thereof.


                                       5
<PAGE>

       4.03   Information Requirements.  The Company agrees to:

                  (a) Make and keep public information  available,  as such term
                  is  understood  and  defined in  Commission  Rule 144 and Rule
                  144A, under the Securities Act;

                  (b) Use its best  efforts  to file  with the  Commission  in a
                  timely manner all reports and other documents  required of the
                  Company under the Securities Act and the Exchange Act; and

                  (c) Furnish to any holder of Restricted Common Stock a copy of
                  the most recent annual or quarterly report of the Company, and
                  such other  publicly  available  reports and  documents of the
                  Company,  so that such holder may avail  itself of any rule or
                  regulation  of the  Commission  allowing  it to sell  any such
                  securities without registration.

       4.04 Piggy-Back  Registration  Rights.  If the Company before January 15,
2001  contemplates  a  public  offering  of  shares  of its  Common  Stock to be
registered  under the Securities  Act, the Company shall so notify the Purchaser
in writing of its  intention  to do so, at least  twenty  (20) days prior to the
filing of a registration statement for such offering. If Purchaser gives written
notice to the  Company,  within ten (10) days of receipt of the notice  from the
Company,  of Purchaser's  desire to have its Restricted Common Stock included in
such  registration  statement,  Purchaser may, subject to the provisions of this
Section 4.04,  have its Restricted  Common Stock  included in such  registration
statement.   The  Company  shall  bear  all  expenses  in  connection  with  the
registration and sale of any such Restricted  Common Stock,  other than the fees
or  disbursements  of any  special  counsel  which the  Purchaser  may retain in
connection with the  registration of its Restricted  Common Stock or any portion
of the  underwriter's  commission,  discounts and expenses  attributable  to the
Restricted Common Stock being offered and sold by the Purchaser. Notwithstanding
the foregoing,  if the managing underwriter of any such offering determines that
the number of shares proposed to be sold by the Company,  by other  shareholders
having piggy-back rights,  and/or by the Purchaser is greater than the number of
shares which the underwriter believes feasible to sell at the time, at the price
and upon the terms approved by the Company,  then the number of shares which the
underwriter  believes  may be sold  shall  be  allocated  for  inclusion  in the
registration  statement in the  following  order of  priority:  (i) shares being
offered by the Company;  and (ii) pro rata among the other  shareholders and the
Purchaser,  based on the  number  of shares of  Common  Stock  each  shareholder
requested to be  registered.  The Company  shall have the right to designate the
managing   underwriter  in  respect  of  a  public  offering  pursuant  to  this
Section 4.04.

       4.05       Additional Covenants Concerning Sale of Shares.

                  (a) The Company will notify the Purchaser of the effectiveness
                  of any registration statement in which Purchaser has exercised
                  registration  rights granted  pursuant to the terms of Section
                  4.04,  together  with a list of the  jurisdictions  where  the
                  Company has  qualified  or is exempt from  registration  under
                  applicable state securities laws.

                                       6
<PAGE>

                  (b) The Company will prepare and file with the Commission such
                  amendments and supplements to any registration statement filed
                  pursuant to the terms of Section 4.04 (and any prospectus used
                  in  connection  with such  registration  statement)  as may be
                  necessary to comply with the  provisions of the Securities Act
                  with  respect to the sale of  Restricted  Common  Stock by the
                  Purchaser.

                  (c) The Company  will  furnish to the  Purchaser a  reasonable
                  number of copies of the prospectus  used in connection  with a
                  registration  statement filed pursuant to the terms of Section
                  4.04,  including a preliminary  prospectus,  which  prospectus
                  conforms to the  requirements  of the Securities Act, and such
                  other  documents as the Purchaser may reasonably  request,  in
                  order  to  facilitate  the   disposition  of  the  Purchaser's
                  Restricted Common Stock.

                  (d) In connection with any registration  statement referred to
                  in Section 4.04 of this  Agreement,  Purchaser will furnish to
                  the Company  such  information  as the Company may  reasonably
                  require  from  Purchaser  for  inclusion  in the  registration
                  statement (and the prospectus included therein).

                  (e) The  Company's  obligations  under  Section  4.04 shall be
                  conditioned  upon  Purchaser  executing and  delivering to the
                  Company its agreement,  in a form  satisfactory to counsel for
                  the  Company,   that  it  will  comply  with  all   applicable
                  provisions  of the  Securities  Act,  the  Exchange  Act,  the
                  securities  acts  of  applicable  states  and  any  rules  and
                  regulations  promulgated  under such acts and will  furnish to
                  the  Company  information  about  sales  made in  such  public
                  offering.

       4.06       Indemnification

         In the  event  any of the  Restricted  Common  Stock  of  Purchaser  is
included in a registration statement under Section 4.04 of this Agreement:

                  (a) To the extent permitted by law, the Company will indemnify
                  and hold harmless the Purchaser and its  Affiliates  and their
                  respective  officers,  directors  and  employees,  against any
                  losses, claims,  damages, or liabilities (joint or several) to
                  which they may become  subject under the  Securities  Act, the
                  Exchange  Act or other  federal or state law,  insofar as such
                  losses, claims, damages, or liabilities (or actions in respect
                  thereof)  arise out of or are based upon any of the  following
                  statements,  omissions or  violations  (hereinafter  sometimes
                  collectively referred to as a "Violation(s)"):  (i) any untrue
                  statement  or alleged  untrue  statement  of a  material  fact
                  contained  in  such  registration  statement,   including  any
                  preliminary  prospectus or final prospectus  contained therein
                  or any amendments or supplements thereto; (ii) the omission or
                  alleged  omission to state therein a material fact required to
                  be stated therein, or necessary to make the statements therein
                  not misleading; or (iii) any violation or alleged violation by
                  the Company of the Securities Act, the Exchange Act, any state
                  securities law or any rule or regulation promulgated under the
                  Securities Act, the Exchange Act or any state  securities law;
                  and the Company will

                                       7
<PAGE>

                 reimburse each such indemnified party for any legal or other
                 expenses   reasonably   incurred   by  it  in   connection  
                 with investigating  or  defending  any  such  loss,   claim,  
                 damage, liability  or  action;  provided,  however,  that  the
                 indemnity agreement  contained  in this  Section  4.06  shall 
                 not apply to amounts  paid in  settlement  of any such  loss, 
                 claim,  damage, liability or action if such  settlement  is
                 effected  without the consent of the Company (which  consent 
                 shall not be  unreasonably withheld or delayed), nor shall the
                 Company be liable in any such case for any such loss, claim, 
                 damage, liability or action to the extent that it arises out of
                 or is based upon a  Violation  which occurs  in  reliance upon,
                 and  in  conformity  with,   written information  furnished  
                 expressly for use in connection with such registration, by any 
                 such indemnified party.

                 (b) To  the  extent  permitted  by  law,  the  Purchaser  will
                 indemnify and hold harmless the Company and its Affiliates and
                 their respective officers, directors and employees against any
                 losses, claims,  damages, or liabilities (joint or several) to
                 which they may become  subject under the  Securities  Act, the
                 Exchange  Act or other  federal or state law,  insofar as such
                 losses, claims, damages, or liabilities (or actions in respect
                 thereof)  arise out of or are based  upon any  Violations,  in
                 each case to the  extent  (and only to the  extent)  that such
                 Violation  occurs in reliance  upon,  and in conformity  with,
                 written  information   furnished  by  the  Purchaser  and  its
                 Affiliates  and  their  respective  officers,   directors  and
                 employees to the Company  expressly for use in connection with
                 such registration;  and the Purchaser will reimburse each such
                 indemnified  party for any legal or other expenses  reasonably
                 incurred by it in connection with  investigating  or defending
                 any such loss, claim, damage,  liability or action;  provided,
                 however,  that  the  indemnity  agreement  contained  in  this
                 Section 4.06 shall not apply to amounts paid in  settlement of
                 any such  loss,  claim,  damage,  liability  or action if such
                 settlement is effected  without the consent of the  Purchaser,
                 which consent shall not be unreasonably withheld or delayed.

                  (c) Promptly after receipt by an indemnified  party under this
                  Section  4.06 of  notice  of the  commencement  of any  action
                  (including any governmental  action),  such indemnified  party
                  will, if a claim in respect  thereof is to be made against the
                  indemnifying   party  under  this  Section  4.06,  notify  the
                  indemnifying party in writing of the commencement  thereof and
                  the indemnifying party shall have the right to participate in,
                  and,  to the  extent the  indemnifying  party so  desires,  to
                  assume the defense thereof with counsel mutually  satisfactory
                  to the parties.

5.     Miscellaneous

       5.01 Expenses;  Finders Fees. Neither party shall pay expenses and finder
fees for or to the other in connection with this transaction.  Each party agrees
to  indemnify  and hold the other  party  harmless  from any  liability  for any
commission  or  compensation  in the nature of a  finder's  fee to any broker or
other person (and the costs and expenses of defending  against such liability or
asserted liability) claiming to have been hired or engaged by the party.

       5.02  Replacement  of  Certificates  for  Restricted  Common Stock.  Upon
receipt by the Company of evidence  reasonably  satisfactory  to it of the loss,
theft,  destruction or mutilation of

                                       8
<PAGE>

any  certificate  evidencing  any  Restricted  Common  Stock,  the Company  will
execute,  register and deliver,  in lieu thereof, a new certificate for an equal
number of shares  of  Restricted  Common  Stock.  In the case of loss,  theft or
destruction of a certificate,  at the election of the Company, the Purchaser may
be required to provide an indemnity reasonably satisfactory to the Company or to
post a surety bond in an amount equal to the value of the shares  represented by
the new certificate.

       5.03  Notice.  Any notice  required  to be given  under the terms of this
Agreement  shall be in  writing,  and shall be given in person,  transmitted  by
telecopier,   e-mail  or  similar  electronic  communication,   delivered  by  a
recognized  overnight  delivery  service such as Federal Express or sent by mail
(certified or  registered  or air mail for  addresses  outside of the country of
origin), return receipt requested,  postage prepaid and addressed to the Company
at 5935 Darwin Court,  Carlsbad,  California 92008, or such other address as the
Company may  designate  to  Purchaser  in writing and to the  Purchaser,  at the
address  appearing at the  beginning of this  Agreement or such other address as
Purchaser may designate to the Company in writing.  Except as otherwise provided
herein,  any notice so given shall be deemed  delivered  upon the earlier of (i)
actual receipt;  (ii) receipt by sender of confirmation if telecopied or sent by
e-mail or  similar  electronic  communication;  (iii) two  business  days  after
delivery to such overnight  delivery  service;  or (iv) five business days after
deposit in the mail.

       5.04  Successors and Assigns.  This  Agreement  shall be binding upon the
parties and their respective successors and assigns.

       5.05 Survival of Representations, Etc. All covenants, representations and
warranties  made by the  parties  herein  shall  survive  the  Closings  and the
delivery of this Agreement and the shares of Restricted  Common Stock  purchased
hereunder.

       5.06 Termination.  Purchaser's  obligation to purchase  Restricted Common
Stock  under  this  Agreement  shall  terminate  with  respect  to any  purchase
obligations  whose purchase dates under Paragraph 1.02 occur after Purchaser has
elected to terminate, in its entirety, all of Purchaser's rights and obligations
under the  Letter of  Intent  ("LOI")  dated  June 11,  1998 and the  Definitive
Agreement (as defined in the LOI) between the parties.

       5.07  Severability.  Should any part of this  Agreement for any reason be
declared  invalid,  such decision shall not affect the validity of any remaining
portion,  which  remaining  portion  shall remain in force and effect as if this
Agreement had been executed with the invalid portion  thereof  eliminated and it
is hereby  declared  the  intention  of the parties  hereto that they would have
executed the remaining  portion of this Agreement  without including therein any
such part,  parts, or portion which may, for any reason,  be hereafter  declared
invalid.

       5.08  Governing  Law. This  Agreement  shall be construed and enforced in
accordance  with,  and governed by, the laws of the State of California  without
regard to its conflict of law provisions.

       5.09 Captions,  Form of Pronouns. The descriptive headings of the various
sections  or parts of this  Agreement  are for  convenience  only and  shall not
affect the meaning or construction of any of the provisions hereof. All pronouns
used in this Agreement shall be deemed to include masculine, feminine and neuter
forms.

                                       9
<PAGE>

       5.10 Agreement is Entire Contract.  This Agreement constitutes the entire
contract  between  the  parties  hereto  related  to the  purchase  and  sale of
Restricted  Common  Stock and no party  shall be liable or bound to the other in
any  manner  by  any  warranties,   representations   or  covenants   except  as
specifically set forth herein.

       5.11 Third Parties.  Nothing in this Agreement is intended to confer upon
any  party,  other  than the  parties  hereto,  and their  respective  permitted
successors and assigns, any rights, remedies,  obligations, or liabilities under
or by reason of this Agreement, except as expressly provided herein.

       5.12 Amendment and Waiver. Any provision of this Agreement may be amended
and the  observance of any term hereof may be waived  (either  prospectively  or
retroactively  and either  generally or in a particular  instance) only with the
written consent of the Company and the Purchaser.

       5.13  Affiliates.  References  to  Purchaser in this  Agreement  shall be
deemed to  include  direct  or  indirect  subsidiaries  of  Purchaser.  The term
"Affiliate" shall have the meaning defined in the LOI.

       5.14 Dispute Resolution. In the event of any controversy or claim arising
out of or relating to any provision of this Agreement,  the parties shall try to
settle their differences  amicably between  themselves.  Any unresolved disputes
arising between the parties  relating to, arising out of or in any way connected
with this  Agreement  or any term or condition  hereof,  or the  performance  by
either party of its obligations  hereunder,  whether before or after termination
of this Agreement, shall be finally resolved by binding arbitration.  Whenever a
party shall decide to institute arbitration  proceedings,  it shall give written
notice to that effect to the other  party.  The party  giving such notice  shall
refrain from instituting the arbitration  proceedings for a period of sixty (60)
days  following  such  notice  The  arbitration  shall  be  held  in San  Diego,
California  according  to the  rules  of the  American  Arbitration  Association
("AAA")  applicable  to  commercial  securities  matters  of  this  nature.  The
arbitration  shall be  conducted  by a panel of three  arbitrators  appointed in
accordance  with AAA rules;  provided,  however,  that each party  shall  within
thirty (30) days after the  institution of the arbitration  proceedings  appoint
one  arbitrator  with  the  third  arbitrator  being  chosen  by the  other  two
arbitrators.  If only one party  appoints an  arbitrator,  then such  arbitrator
shall be entitled to act as the sole arbitrator to resolve the controversy.  Any
arbitration  hereunder  shall  be  conducted  in the  English  language  and the
arbitrator(s)  shall apply the law set forth in SectionE5.08.  All arbitrator(s)
eligible to conduct the arbitration must agree to render their opinion(s) within
thirty (30) days of the final arbitration  hearing. The arbitrator(s) shall have
the  authority  to grant  injunctive  relief and  specific  performance,  and to
allocate  between the parties the costs of arbitration in such equitable  manner
as he determines;  provided,  however,  that each party shall bear its own costs
and  attorney's  and witness'  fees.  Notwithstanding  the terms of this Section
5.14,  a party  shall also have the right to obtain  prior to the  arbitrator(s)
rendering the arbitration  decision,  provisional  remedies including injunctive
relief or specific  performance from a court having  jurisdiction  thereof.  The
arbitrator(s) will, upon the request of either party, issue a written opinion of
the findings of fact and  conclusions of law and shall deliver a copy to each of
the parties. Decisions of the arbitrator(s) shall be final and binding on all of
the  parties.  Judgment  on the award so  rendered  may be  entered in any court
having jurisdiction thereof.


                                       10
<PAGE>



       The execution  hereof by Purchaser shall constitute a contract between us
for the uses and  purposes  hereinabove  set forth,  and this  Agreement  may be
executed in any number of counterparts,  each executed counterpart  constituting
an original but all together only one agreement.

                                         THE IMMUNE RESPONSE CORPORATION


                                          By /s/ Dennis J. Carlo


                                          By /s/ Charles J. Cashion



ACCEPTED AND AGREED TO AS OF THE DAY AND YEAR AFORESAID.

                                   PURCHASER:

                                       AGOURON PHARMACEUTICALS, INC


                                       By /s/ Peter Johnson
                                          Peter Johnson
                                          President and Chief Executive Officer


                                       By /s/ Gary Friedman
                                          Gary Friedman
                                          Secretary


                                       11

       AMENDMENT TO THE VIRACEPT (Nelfinavir Mesylate) LICENSE AGREEMENT


     This Amendment  ("Amendment") to the VIRACEPT (Nelfinavir Mesylate) License
Agreement  ("the  Agreement"),  effective  as of  this  1st  day  of  May,  1998
("Effective Date"), is between Agouron Pharmaceuticals, Inc., a corporation duly
organized  and  existing  under  the laws of the state of  California,  having a
principal  place of  business  at  10350  North  Torrey  Pines  Road,  La Jolla,
California,  United States of America  (hereinafter  referred to as  "Agouron"),
Japan Tobacco Inc., a corporation  duly organized and existing under the laws of
Japan,  having its principal  place of business at JT Building,  2-1,  Toranomon
2-chome,  Minato-ku,  Tokyo,  Japan  (hereinafter  referred  to  as  "JT"),  and
F. Hoffmann-La  Roche Ltd, a corporation  duly  organized and existing under the
laws of Switzerland,  having its principal  place of business at  CH-4002-Basel,
Switzerland (hereinafter referred to as "Roche"). Agouron, JT and Roche are each
sometimes  hereinafter  referred  to as a party  (collectively  "parties").  The
parties for good and valuable consideration hereby agree as follows:

                                 RECITALS

1.   Background

     1.01 All capitalized terms,  except as expressly  otherwise defined herein,
shall have the meanings set forth in the Agreement.

     1.02  Agouron,  JT and Roche entered into a Letter of Intent on January 17,
1997  and  the  VIRACEPT  (nelfinavir  mesylate)  License  Agreement  dated  for
reference purposes only June 30, 1997,  under which Agouron and JT granted,  and
Roche received, a license in the Licensed Territory to use, offer for sale, sell
and/or import Products in the Field under  applicable  Agouron/JT  Patent Rights
and  Development   Program  Patent  Rights  and  using   applicable   Agouron/JT
Technology, Roche Technology and Development Program Technology.

     1.03  Roche has  certain  capacities  to  manufacture  Compound  as well as
formulate  Product.  Roche  has  informed  Agouron  and  JT  of  its  desire  to
manufacture  Compound and formulate Product to be sold and/or distributed in the
Licensed    Territory   with   such   Roche    manufacturing   and   formulating
responsibilities to be phased-in over an agreed-to period of time.

     1.04 The parties,  in accordance  with the provisions of Section 4.04(f) of
the Agreement,  have  discussed in good faith an  arrangement  under which Roche
could be the  manufacturer  of Compound and the formulator of Product to be sold
and/or distributed in the Licensed Territory.

     1.05  Agouron and JT under  certain  conditions  are willing to grant Roche
certain rights to manufacture  Compound and formulate  Product to be sold and/or
distributed in the Licensed Territory.

     1.06     *



<PAGE>


     1.07      *







     1.08  To  effect  the  preceding  and  clarify  the  parties'   rights  and
obligations  under the  Agreement,  the parties  wish to amend the  Agreement as
provided below.

                              AMENDMENT

2.   Grant of Rights to Roche

     2.01     *








     2.02     *







     2.03     *





                                       2
<PAGE>


     2.04 Except as otherwise specifically provided in the Agreement, *





















     2.05 All licenses granted Roche in this Amendment in a country shall become
*

     2.06 Roche shall not have the right to use *



 3.  Limitations

     3.01 Roche's rights to manufacture Compound and formulate Product shall *











     3.02     *




                                       3
<PAGE>



     (a)      *





     (b)      *



     (c)      *



































     (d)      *



                                       4
<PAGE>






































     3.03     *



                                       5
<PAGE>


4.   Markup

     4.01 For the rights  granted  pursuant to the provisions of Paragraphs
     2.01-2.04, *















5.   License grant to Agouron and JT

     5.01 Roche grants Agouron and JT *







     5.02 For the rights granted pursuant to the provisions of Paragraph 5.01, *












     5.03     *


                                       6
<PAGE>


6.   Exchange of Information

     6.01 Immediately after execution of this Amendment by the parties, and
     on an ongoing basis thereafter, *









7.   Supply obligations

     7.01 *









     7.02 *













     7.03 *


      (a)  *





      (b) *





                                       7
<PAGE>







     (c)  *





     (d)  *









     (e)  *












     (f)  *







     7.04 *



                                       8
<PAGE>
















     7.05 *











8.  Schedule 2 of Agreement

     8.01 *















9.   Trademark/Labeling

     9.01 The labeling for any Product to be sold and/or distributed by Roche, *


                                       9
<PAGE>





10.  Remaining Agreement Terms

          10.01  Except as  expressly  amended  by the terms  contained  in this
     Amendment,  the provisions of the Agreement,  as previously amended,  shall
     remain in full force and effect.

          IN WITNESS  WHEREOF,  the parties  have caused  their duly  authorized
     representatives to enter into this Amendment to the VIRACEPT(TM)(Nelfinavir
     Mesylate) License Agreement, effective as of the Effective Date.





AGOURON  PHARMACEUTICALS, INC.         JAPAN TOBACCO INC.


By:  /s/ Gary Friedman                  By: /s/ Masakazu Kakei
Name:   Gary Friedman                   Name: Masakazu Kakei
Title:  Corp. Vice President            Title: Executive Director


By:/s/ R. Kent Snyder                   By: /s/ Tatsuya Yoneyama
Name: R. Kent Snyder                    Name: Tatsuya Yoneyama
Title: Sr. Vice President               Title: Vice President, Business Devel.,
                                               Pharmaceuticals Division
F. HOFFMANN-LA ROCHE LTD

By /s/ St. Arnold
Name: St. Arnold
Title: Vice Director

By: /s/ B. Scholl
Name: B. Scholl
Title: Vice Director






                                       10
<PAGE>





                                   SCHEDULE 1



*



                                      S1-1
<PAGE>



                                   SCHEDULE 2
                   ROCHE DEMAND SCHEDULE FOR VIRACEPT PRODUCT
*

                                      S2-1
<PAGE>
                                   SCHEDULE 2
                   ROCHE DEMAND SCHEDULE FOR VIRACEPT PRODUCT
*

                                      S2-2
<PAGE>
                                   SCHEDULE 2
                   ROCHE DEMAND SCHEDULE FOR VIRACEPT PRODUCT
*

                                      S2-3
<PAGE>
                                   SCHEDULE 2
                   ROCHE DEMAND SCHEDULE FOR VIRACEPT PRODUCT
*

                                   SCHEDULE 2
                   ROCHE DEMAND SCHEDULE FOR VIRACEPT PRODUCT
*

                                      S2-4
<PAGE>
                                   SCHEDULE 2
                   ROCHE DEMAND SCHEDULE FOR VIRACEPT PRODUCT
*

                                      S2-5
<PAGE>
                                  ATTACHMENT 1

1.   *

2.   *

3.   *

4.   *

5.   *

6.   *


 
                                   Subsidiaries of Agouron Pharmaceuticals, Inc.
<TABLE>
<CAPTION>



               Subsidiary                                            %                       State of
               Corporation                                         Owned                   Incorporation    

<S>                                                                <C>                  <C>
         Alanex Corporation                                        100%                 Delaware

         Agouron Pharmaceuticals Canada Inc.                       100%                 New Brunswick,
                                                                                        Canada
</TABLE>






                                        CONSENT OF INDEPENDENT ACCOUNTANTS


     We hereby  consent to the  incorporation  by reference in the  Registration
Statement on Form S-8 (No.  333-46531) of Agouron  Pharmaceuticals,  Inc. of our
report dated July 16, 1998 appearing on page F-1 of this Form 10-K.


/s/  PRICEWATERHOUSECOOPERS LLP

San Diego, California
August 4, 1998

<TABLE> <S> <C>

                                            
<ARTICLE>                                          5
<LEGEND>                                      
     This schedule  contains summary  financial  information  extracted from the
balance  sheet  and the  statement  of income  (loss)  and is  qualified  in its
entirety by reference to such financial statements.
</LEGEND>                                     
<CIK>                                                       0000811210   
<NAME>                                            Agouron Pharmaceuticals, Inc.
<MULTIPLIER>                                                  1,000
                                                    
<S>                                                  <C>
<PERIOD-TYPE>                                      12-mos
<FISCAL-YEAR-END>                                  Jun-30-1998
<PERIOD-END>                                       Jun-30-1998
<CASH>                                                      19,098
<SECURITIES>                                                68,025
<RECEIVABLES>                                               51,669
<ALLOWANCES>                                                   328
<INVENTORY>                                                103,706
<CURRENT-ASSETS>                                           247,981
<PP&E>                                                      71,533
<DEPRECIATION>                                              24,321
<TOTAL-ASSETS>                                             363,337
<CURRENT-LIABILITIES>                                      120,253
<BONDS>                                                          0
                                            0
                                                      0
<COMMON>                                                   348,482
<OTHER-SE>                                               (112,313)
<TOTAL-LIABILITY-AND-EQUITY>                               363,337
<SALES>                                                    409,298
<TOTAL-REVENUES>                                           466,505
<CGS>                                                      172,644
<TOTAL-COSTS>                                              259,485
<OTHER-EXPENSES>                                                 0
<LOSS-PROVISION>                                                 0
<INTEREST-EXPENSE>                                             752
<INCOME-PRETAX>                                             21,924
<INCOME-TAX>                                                 8,770
<INCOME-CONTINUING>                                         13,154
<DISCONTINUED>                                                   0
<EXTRAORDINARY>                                                  0
<CHANGES>                                                        0
<NET-INCOME>                                                13,154
<EPS-PRIMARY>                                                 0.43
<EPS-DILUTED>                                                 0.40
        

</TABLE>

                          Agouron Pharmaceuticals, Inc.
                           Important Factors Regarding
                           Forward-Looking Statements

The  following  factors,  among  others,  could cause  actual  results to differ
materially  from those  contained  in  forward-looking  statements  made in this
report and presented elsewhere by management from time to time.

Uncertainty  of Product  Development  and Market  Acceptance:  The  Company  has
completed the development and commercialization of only one product and does not
expect to have any additional  products  commercially  available  until calendar
2000, if at all. There can be no assurance that further research and development
of these  additional  products  will be  successful or will result in drugs that
will qualify for approval by regulatory  authorities  for commercial  sale or be
accepted and successful in the marketplace.

Uncertainty  Associated with Clinical  Testing:  Historical  results of clinical
testing of approved  products and those under  development  are not  necessarily
predictive of future results. There can be no assurance that clinical studies of
products  under  development  will  demonstrate  the safety and efficacy of such
products.  The failure to  adequately  demonstrate  the safety and efficacy of a
therapeutic  product could delay or prevent regulatory  approval of the product.
There can be no assurance that unacceptable  toxicities or side effects will not
occur at any time in the course of human  clinical  trials or commercial  use of
the Company's drugs. The appearance of any such unacceptable  toxicities or side
effects could  interrupt,  limit,  delay or abort the  development of any of the
Company's drugs or, if previously  approved,  necessitate  their withdrawal from
the market. Furthermore,  there can be no assurance that disease resistance will
not limit the efficacy of the Company's current and future drugs, if any. Delays
in planned patient enrollment in the Company's current clinical trials or future
clinical trials may result in increased costs, program delays or both.

Future  Profitability:  While the Company  has  recently  generated  significant
revenues  from the  commercialization  of its  first  product  and has  reported
operating  profits on a  quarterly  basis,  there can be no  assurance  that the
Company will maintain profitable operating results.

Additional Financing Requirements and Access to Capital:  Additional funding may
be required for future product or business organization  opportunities,  capital
expenditures,  working capital and other general  corporate  needs. No assurance
can be given that additional financing will be available when needed or on terms
acceptable to the Company. If adequate funds are not available,  the Company may
be required to delay or  eliminate  expenditures  for certain of its programs or
activities or to license third parties to commercialize products or technologies
that the Company would otherwise seek to develop and commercialize itself.

     Dependence  on  Others:   The  Company's   strategy  for   development  and
commercialization  of certain of its  products  entails  entering  into  various
arrangements  with  corporate  partners,  licensees and others.  There can be no
assurance that any revenues or profits will be derived from such
<PAGE>
arrangements, that any of the Company's current strategic  arrangements will be
continued, or that the Company will be able to enter into future collaborations.
Products  Acquired from Third Parties:  The Company has recently acquired rights
in three development  stage products focusing on the HIV/AIDS market.  There can
be no  assurance  that  the  Company  will be  successful  with  the  commercial
development of such products or, if successfully  developed,  that such products
will make a significant contribution to the Company's future operating results.

Manufacturing  Capabilities:  The  Company  is, and for the  foreseeable  future
expects  to  be,  dependent  on a  number  of  contract  manufacturers  for  the
commercial manufacture of its current and future products (if any) under current
Good Manufacturing  Practices ("GMP").  Failure to meet GMP standards would have
an adverse impact on the Company's business. No assurance can be given that such
manufacturers  can be  established or retained or that such  manufacturers  will
timely deliver sufficient product quantities at acceptable costs.

Sales and Marketing  Capabilities:  The Company has established its capabilities
in the sales, marketing and distribution of pharmaceutical  products.  There can
be no  assurance  that such  capabilities  will be  sufficient  or  successfully
maintained.

Patents and Proprietary Technology: No assurance can be given that the Company's
patent  applications,  and those  applications to which the Company has obtained
license  rights,  will issue as patents or that any  patents  that are or may be
issued  will  provide  the  Company  with  adequate  protection  for the covered
products  or  technology.  Additionally,  there  can be no  assurance  that  the
Company's confidentiality  agreements will adequately protect its trade secrets,
know-how or other proprietary  information.  Further,  there can be no assurance
that the Company's  activities  will not infringe on the patents or  proprietary
rights of  others or that the  Company  will be able to obtain  licenses  to any
technology  that it may require to conduct its business or that, if  obtainable,
such technology can be licensed at a reasonable cost.

Technological Change and Competition: There can be no assurance that competitors
will not succeed in developing technologies and products that are more effective
than any which have been or are being  developed  by the  Company or which would
render the Company's  technology and products obsolete and noncompetitive.  Many
of the Company's  competitors have substantially greater financial and technical
resources and production,  marketing and development capabilities and experience
than the Company. Accordingly,  certain of the Company's competitors may succeed
in obtaining  regulatory  approvals more rapidly or effectively than the Company
or  enjoy   greater   manufacturing   efficiencies   and  sales  and   marketing
capabilities,   areas  in  which  the  Company  has  less  experience  than  its
competitors.

Volatility  of Stock  Price:  The market price of the Common Stock has in recent
years fluctuated significantly,  and it is likely that the price of Common Stock
will fluctuate in the future.  Announcements  by the Company or others regarding
its operating results,  corporate  reorganization  matters,  existing and future
collaborations,    results   of   clinical   trails,   scientific   discoveries,
technological innovations, commercial products, patents or proprietary rights or
regulatory  actions
<PAGE>
may have a  significant  effect on the market  price of the Common Stock.
Fluctuations in financial  performance from period to period also
may have a significant impact on the market price of the Common Stock.

Government Regulation:  Preclinical studies,  clinical trials and the production
and marketing of the Company's products and its ongoing research and development
activities are subject to regulation by numerous governmental authorities in the
United States and other countries. If regulatory approval of a drug is obtained,
such  approval  may  involve  limitations  and  restrictions  on the drug's use.
Failure of the Company,  or its corporate  partners,  to comply with  applicable
regulatory  requirements can, among other things, result in fines, suspension of
regulatory  approvals or product  recalls.  Additionally,  the Company is or may
become  subject  to  various  federal,  state and local  laws,  regulations  and
recommendations  relating to safe working conditions and the use and disposal of
hazardous or potentially hazardous substances.  The Company is unable to predict
the  extent  of  restrictions   that  might  arise  from  any   governmental  or
administrative action.

Uncertainty  of Third-Party  Reimbursement  and Product  Pricing:  The Company's
ability  to  commercialize  products  successfully  will  depend  in part on the
availability  of  reimbursement  of the  costs  of  such  products  and  related
treatments at acceptable  levels from  government  authorities,  private  health
insurers  and other  organizations,  such as health  maintenance  organizations.
There can be no assurance  that  reimbursement  in the United  States or foreign
countries  will be available  for any products the Company has  developed or may
develop or, if available,  will either remain available or will not be decreased
in the future, or that reimbursement amounts, if any, will not reduce the demand
for, or the price of, the Company's  products,  thereby adversely  affecting the
Company's business.

Product Liability;  Limited Insurance Coverage: The testing,  marketing and sale
of human health care products  entail an inherent risk of allegations of product
liability and there can be no assurance that product  liability  claims will not
be asserted against the Company. There can be no assurance that the Company will
be able to obtain or maintain product liability insurance on acceptable terms or
that such insurance will provide adequate coverage against any potential claims.

Use of Hazardous  Materials:  The Company's research and development  activities
involve  the  controlled  use of  hazardous  materials,  chemicals,  viruses and
various  radioactive  compounds.  Although the Company  believes that its safety
procedures  for  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
that result and any liability could have an adverse effect on the Company.

Attraction  and Retention of Personnel:  The future  success of the Company will
depend in large part on its ability to  continue  to attract  and retain  highly
qualified scientific,  technical,  sales and marketing and managerial personnel.
Competition for such personnel is intense and there can be no assurance that the
Company  will be able to  attract  and retain the  personnel  necessary  for
<PAGE>
the ongoing  development  of its  business.  The loss of or failure to recruit 
such personnel could have an adverse effect on the Company.


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