SECURITIES AND EXCHANGE COMMISSION
                               WASHINGTON, D.C.   20549
                                           
                                           
                                      FORM 10-Q
                                           
                                           
[ X ]    QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
         EXCHANGE ACT OF 1934
    
For the period ended         SEPTEMBER 30, 1997  
                    --------------------------------------
    
                                          OR
                                           
[   ]    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
         EXCHANGE ACT OF 1934 

For the transition period from ____________  to _____________


                                 Commission File No. 
                                       0-19731
 

                                GILEAD SCIENCES, INC.
                (Exact name of registrant as specified in its charter)
                                           
                                           
           Delaware                                    94-3047598     
(State or other jurisdiction of                    (I.R.S. Employer
 incorporation or organization)                   Identification No.)

333 Lakeside Drive, Foster City, California                94404     
    (Address of principal executive offices)            (Zip Code)

Registrant's telephone number, including area code:     415-574-3000


    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
                                       --------            --------
                                           
    Number of shares outstanding of the issuer's common stock, par value 
$.001 per share, as of October 20, 1997:    29,733,935.


                                     1


                                GILEAD SCIENCES, INC.
                                           
                                        INDEX
                                           
                                           
PART  I.  FINANCIAL INFORMATION                                      PAGE NO.
                                                                     --------
Item  1.    Consolidated Financial Statements and Notes

            Consolidated Balance Sheets -- September 30, 1997
            and December 31, 1996                                        3

            Consolidated Statements of Operations -- for 
            the three months and nine months ended 
            September 30, 1997 and 1996                                  4

            Consolidated Statements of Cash Flows -- for 
            the nine months ended September 30, 1997 
            and 1996                                                     5

            Notes to Consolidated Financial Statements                   6

Item  2.    Management's Discussion and Analysis of Financial
            Condition and Results of Operations                          7


PART II.  OTHER INFORMATION

Item  6.    Exhibits and Reports on Form 8-K                            10

SIGNATURES                                                              11


                                      2


                            PART I. FINANCIAL INFORMATION
                                           
Item 1.  Consolidated Financial Statements and Notes

                                GILEAD SCIENCES, INC.
                             CONSOLIDATED BALANCE SHEETS
                  (in thousands, except share and per share amounts)

                                     ASSETS
                                                SEPTEMBER 30,      DECEMBER 31,
                                                    1997              1996
                                                -------------      ------------
                                                 (unaudited)          (Note)

Current assets:

    Cash and cash equivalents                    $  45,670          $ 131,984
    Short-term investments                         286,494            163,979
    Other current assets                             4,346              4,290
                                                 ---------          ---------

       Total current assets                        336,510            300,253

Property and equipment, net                         10,225              9,172
Other assets                                         1,419              1,248
                                                 ---------          ---------
                                                 $ 348,154          $ 310,673
                                                 ---------          ---------
                                                 ---------          ---------

                     LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:

    Accounts payable                             $   1,592          $   2,501
    Accrued clinical and preclinical expenses        7,650              5,007
    Other accrued liabilities                        5,785              4,433
    Deferred revenues                                3,304                527
    Current portion of equipment financing 
      obligations and long-term debt                 2,449              3,631
                                                 ---------           --------

       Total current liabilities                    20,780             16,099

Noncurrent portion of equipment financing 
  obligations and long-term debt                     1,570              2,914

Commitments

Stockholders' equity:
    Preferred stock, par value $.001 per share; 
      5,000,000 shares authorized;  1,133,786 
      shares of Series B issued and outstanding 
      at September 30, 1997; none at 
      December 31, 1996 (liquidation 
      preference of $40.0 million)                       1                  -
    Common stock, par value $.001 per share; 
      60,000,000 shares authorized; 29,719,035 
      shares and 28,758,165 shares issued and 
      outstanding at September 30, 1997 and 
      December 31, 1996, respectively                   30                 29
    Additional paid-in capital                     475,796            426,577
    Unrealized gains (losses) on investments, 
      net                                              362                 89
    Accumulated deficit                           (150,055)          (134,486)
    Deferred compensation                             (330)              (549)
                                                 ---------          ---------

       Total stockholders' equity                  325,804            291,660
                                                 ---------          ---------
                                                 $ 348,154          $ 310,673
                                                 ---------          ---------
                                                 ---------           --------

Note:    The consolidated  balance sheet at December 31, 1996 has been derived
         from audited financial statements at that date but does not include 
         all of the information and footnotes required by generally accepted 
         accounting principles for complete financial statements.  

                            See accompanying notes.



                                     3


                            GILEAD SCIENCES, INC.
                    CONSOLIDATED STATEMENTS OF OPERATIONS
                                (unaudited)
                   (in thousands, except per share amounts)




                                                THREE MONTHS ENDED         NINE MONTHS ENDED
                                                   SEPTEMBER 30,             SEPTEMBER 30,
                                              -----------------------    ---------------------
                                                1997           1996         1997       1996
                                              -----------------------    ---------------------
                                                                          
Revenues:

    Product sales, net                        $  2,326       $  3,353     $  9,316    $  4,755
    Contract revenues                            2,347         21,301       20,438      22,884
    Royalty revenues                               264              -          374           -
                                              --------       --------     --------    --------

Total revenues                                   4,937         24,654       30,128      27,639

Costs and expenses:

    Cost of sales                                  180            447          995         548
    Research and development                    13,604         11,163       39,126      31,008
    Selling, general and administrative          6,233          7,641       18,525      19,947
                                              --------       --------     --------    --------

Total costs and expenses                        20,017         19,251       58,646      51,503
                                              --------       --------     --------    --------

Income (loss) from operations                  (15,080)         5,403      (28,518)    (23,864)

Interest income, net                             4,749          3,907       12,949      10,214
                                              --------       --------     --------    --------

Net income (loss)                             $(10,331)      $  9,310     $(15,569)   $(13,650)
                                              --------       --------     --------    --------
                                              --------       --------     --------    --------

Net income (loss) per share                     $(0.35)      $   0.30     $  (0.53)   $  (0.50)
                                              --------       --------     --------    --------
                                              --------       --------     --------    --------

Common and common equivalent
shares used in the calculation of net 
income (loss) per share                         29,406         30,549       29,147      27,500
                                              --------       --------     --------    --------
                                              --------       --------     --------    --------



                            See accompanying notes.


                                     4

                           GILEAD SCIENCES, INC.
                    CONSOLIDATED STATEMENTS OF CASH FLOWS
               Increase (decrease) in cash and cash equivalents
                                (unaudited)
                               (in thousands)



                                                        NINE MONTHS ENDED SEPTEMBER 30,
                                                        -------------------------------
                                                              1997           1996
                                                        ---------------  --------------
                                                                    
Cash flows from operating activities:
    Net loss                                               $  (15,569)    $  (13,650)
    Adjustments used to reconcile net loss 
    to net cash used in operating activities:
         Depreciation and amortization                          2,277          3,718
         Changes in assets and liabilities:
              Other current assets                                (56)       (14,766)
              Other assets                                       (171)          (136)
              Accounts payable                                   (909)          (471)
              Accrued clinical and preclinical expenses         2,643          1,626
              Other accrued liabilities                         1,352          2,453
              Deferred revenues                                 2,777            792
                                                           ----------     ----------

                 Total adjustments                              7,913         (6,784)
                                                           ----------     ----------

                 Net cash used in operating activities         (7,656)       (20,434)
                                                           ----------     ----------

Cash flows from investing activities:
    Purchases of short-term investments                      (333,197)      (324,752)
    Sales of short-term investments                           163,491        201,366
    Maturities of short-term investments                       47,464        117,209
    Capital expenditures                                       (3,111)        (1,565)
                                                           ----------     ----------
                 Net cash used in investing activities       (125,353)        (7,742)
                                                           ----------     ----------

Cash flows from financing activities:
    Payments of equipment financing obligations 
         and long-term debt                                    (2,526)        (2,014)
    Proceeds from issuance of common stock                      9,221        158,813
    Proceeds from issuance of preferred stock                  40,000              -
                                                           ----------     ----------
                 Net cash provided by financing activities     46,695        156,799
                                                           ----------     ----------

Net increase (decrease) in cash and cash equivalents          (86,314)       128,623

Cash and cash equivalents at beginning of period              131,984         27,420
                                                           ----------     ----------

Cash and cash equivalents at end of period                 $   45,670     $  156,043
                                                           ----------     ----------
                                                           ----------     ----------



                            See accompanying notes.


                                     5


                            GILEAD SCIENCES, INC.
                 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                           
                             September 30, 1997
                                (unaudited)


1.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

    BASIS OF PRESENTATION

    The information at September 30, 1997, and for the three and nine month 
periods ended September 30, 1997 and 1996, is unaudited but includes all 
adjustments (consisting only of normal recurring adjustments) which, in the 
opinion of management, are necessary to state fairly the financial 
information set forth therein in accordance with generally accepted 
accounting principles. The interim results are not necessarily indicative of 
results to be expected for the full fiscal year.  These financial statements 
should be read in conjunction with the audited financial statements for the 
fiscal year ended December 31, 1996 included in the Company's annual report 
to security holders furnished to the Securities and Exchange Commission 
pursuant to Rule 14a-3(b) in connection with the Company's 1997 Annual 
Meeting of Stockholders and the interim financial statements included in the 
previously filed quarterly report (Form 10-Q) for the three and six months 
ended March 31, 1997 and June 30, 1997.

    PER SHARE DATA

    Net income per share is computed using the weighted average number of 
common shares and dilutive common equivalent shares attributable to 
convertible preferred stock and stock options outstanding during the period.  
Net loss per share is computed using the weighted average number of common 
shares outstanding during the period.  Common stock equivalents relating to 
convertible preferred stock and stock options are excluded from the 
computation of net loss per share as their effect is antidilutive.

    In February 1997, the Financial Accounting Standards Board issued 
Statement No. 128, "Earnings Per Share" (EPS).  The Statement is effective 
for both interim and annual financial statements for periods ending after 
December 15, 1997.  Under the Statement, primary EPS computed in accordance 
with Accounting Principle Board Opinion No. 15 will be replaced with a new 
simpler calculation called "basic EPS" and Gilead will be required to restate 
comparative EPS amounts for all prior periods.  Under the new requirements, 
basic EPS for the three and nine month periods ended September 30, 1997 and 
the nine month period ended September 30, 1996 will be unchanged from primary 
EPS as disclosed.  Basis EPS for the three month period ended September 30, 
1996 is $0.33 per share as compared to $0.30 per share under the primary EPS 
method.  Fully diluted EPS will not change significantly but has been renamed 
"diluted EPS".  Gilead plans to implement the Statement in the fourth quarter 
of 1997.

2.  INVESTMENTS

    Management determines the appropriate classification of debt securities 
at the time of purchase and reevaluates such designation as of each balance 
sheet date.  The Company's debt securities, which consist primarily of U.S. 
Treasury Securities, corporate commercial paper, bonds and notes of domestic 
corporations and asset-backed securities, are classified as 
available-for-sale and are carried at estimated fair value in cash 
equivalents and short-term investments. Unrealized gains and losses are 
reported as a separate component of stockholders' equity.  The amortized cost 
of debt securities in this category is adjusted for amortization of premiums 
and accretion of discounts to maturity. Such amortization is included in 
interest income.  Realized gains and losses on available-for-sale securities 
are included in interest income and expense.  The cost of securities sold is 
based on the specific identification method. 


                                     6


Interest and dividends on securities classified as available-for-sale are 
included in interest income.  At September 30, 1997, the contractual 
maturities of the debt securities do not exceed three years.

Item 2.  Management's Discussion and Analysis of Financial Condition and
         Results of Operations

OVERVIEW

    Since its inception in June 1987, Gilead has devoted the substantial 
portion of its resources to its research and development programs, with 
significant expenses relating to commercialization beginning in 1996. With 
the exception of the third quarter of 1996 and the second quarter of 1997, 
when the Company recognized significant license fees and milestone payments 
related to two collaboration agreements, the Company has incurred losses in 
every quarter since its inception.  Gilead expects to incur losses for the 
next several years due primarily to its research and development programs, 
including preclinical studies, clinical trials and manufacturing, as well as 
marketing and sales efforts in support of VISTIDE-Registered Trademark- 
(cidofovir injection) and other potential products.  

    Gilead is independently marketing VISTIDE in the United States for the 
treatment of cytomegalovirus retinitis in patients with AIDS.  P&U has the 
exclusive right to market VISTIDE outside of the United States, and recently 
launched the product in several European countries after receipt of marketing 
authorization from the European Commission.  The financial contribution from 
VISTIDE sales and royalties has been modest to date, and the Company does not 
anticipate achieving sustained profitability without significant revenue 
contribution from other products in development, supplemented by contract 
revenue.  The Company expects that its financial results will continue to 
fluctuate from quarter to quarter and that such fluctuations may be 
substantial. There can be no assurance that the Company will successfully 
develop, commercialize, manufacture and market additional products or achieve 
sustained profitability.  As of September 30, 1997, the Company's accumulated 
deficit was approximately $150.1 million.

    The successful development and commercialization of the Company's 
products will require substantial and ongoing efforts at the forefront of the 
life sciences industry.  The Company is pursuing preclinical or clinical 
development of a number of additional product candidates. Even if these 
product candidates appear promising during various stages of development, 
they may not reach the market for a number of reasons. Such reasons include 
the possibilities that the potential products will be found ineffective or 
unduly toxic during preclinical or clinical trials, fail to receive necessary 
regulatory approvals, be difficult to manufacture on a large scale, be 
uneconomical to market or be precluded from commercialization by proprietary 
rights of others.

    As a company in an industry undergoing rapid change, the Company faces 
significant challenges and risks, including the risks inherent in its 
research and development programs, uncertainties in obtaining and enforcing 
patents, the lengthy and expensive regulatory approval process, intense 
competition from pharmaceutical and biotechnology companies, increasing 
pressure on pharmaceutical pricing from payors, patients and government 
agencies, and uncertainties associated with the market performance of VISTIDE 
and the market acceptance of any of the Company's products in development 
that reach the market.  These risks are discussed in greater detail in the 
Company's Annual Report on Form 10-K for the year ended December 31, 1996.  
Stockholders and potential investors in the Company should carefully consider 
these risks in evaluating the Company and should be aware that the 
realization of any of these risks could have a dramatic and negative impact 
on the Company's stock price.

FORWARD-LOOKING STATEMENTS

    This report contains forward-looking statements relating to clinical and 
regulatory developments, marketing and sales matters, future expense levels 
and financial results.  These statements involve inherent risks and 
uncertainties. The Company's actual results may differ significantly from the 
results discussed in the forward-looking statements.  Factors that might 
cause such a difference include, but are 


                                     7


not limited to, the risks  discussed in the Company's Annual Report on Form 
10-K for the year ended December 31, 1996, particularly those relating to the 
development, regulatory approval and marketing of pharmaceutical products.

RESULTS OF OPERATIONS

REVENUES

    The Company had total revenues of $4.9 million and $24.7 million for the 
quarters ended September 30, 1997 and 1996, respectively.  Total revenues 
included net product sales of $2.3 million and $3.4 million from the sale of 
VISTIDE for the quarters ended September 30, 1997 and 1996, respectively.  
This decrease in product sales reflects an overall decrease in the demand for 
drugs which treat cytomegalovirus retinitis in patients with AIDS that has 
resulted from the increasing general availability of more effective therapies 
for AIDS.  

    Total revenues for the nine month periods ended September 30, 1997 and 
1996 were $30.1 million and $27.6 million, respectively, which included net 
product sales of $9.3 million and $4.8 million for the same periods. Revenues 
of approximately $13.0 million for the nine month period ended September 30, 
1997 resulted from milestone payments under the Company's collaborative 
agreements with P&U and F. Hoffmann-La Roche Ltd. ("Roche").  Revenues 
totaling $20.3 million were recognized in the nine month period ended 
September 30, 1996 related to two initial license fees under the Company's 
agreements with these two partners. In addition, revenues in the first nine 
months of 1997 included $4.9 million of contract revenue from Roche related 
to the collaboration agreement to develop and commercialize therapies for the 
treatment and prevention of viral influenza.  Revenues of approximately $2.3 
million in each of the nine month periods ended September 30, 1997 and 1996 
resulted from the Company's collaborative research and development agreement 
with Glaxo Wellcome.

OPERATING COSTS AND EXPENSES

    The Company's cost of sales was $0.2 million and $0.4 million for the 
quarters ended September 30, 1997 and 1996,  respectively.  Cost of sales 
resulted from the Company's sale of VISTIDE, which was launched in June 1996. 
Cost of sales for the nine month periods ended September 30,  1997 and 1996 
was $1.0 million and $0.5 million, respectively.  The Company's cost of sales 
has decreased as a percentage of product sales because of reserves for 
inventory obsolescence in 1996 which were not required in 1997.

    For the quarter ended September 30, 1997, the Company's research and 
development expenses increased 21.9% to $13.6 million from $11.2 million for 
the same period in 1996.  Research and development expenses for the nine 
month periods ended September 30, 1997 and 1996 were $39.1 million and $31.0 
million, respectively.  These increases were due primarily to expansion in 
the scope and number of clinical trials for several product candidates and a 
related increase in research and development staffing and manufacturing. The 
Company expects its research and development expenses will increase in the 
fourth quarter and increase significantly throughout 1998, reflecting 
anticipated increased expenses related to clinical trials for several product 
candidates as well as related increases in staffing, preclinical studies and 
manufacturing.

    Selling, general and administrative expenses were $6.2 million and $7.6 
million for the quarters ended September 30, 1997 and 1996, respectively, 
representing a decrease of 18.4%. Selling, general and administrative 
expenses were $18.5 million and $19.9 million in the nine month periods 
ending September 30, 1997 and 1996, respectively. This decrease for the three 
and nine month periods resulted from VISTIDE product launch-related expenses 
incurred in 1996 which were not incurred in 1997.  The Company expects its 
selling, general and administrative expenses to increase during the remainder 
of 1997 and to increase significantly in 1998 in connection with the ongoing 
sales and marketing activities related to the sale of VISTIDE and other 
potential products as well as continued support of expanded 


                                     8


research an development activities.   In particular, the Company anticipates 
expanding its sales and marketing capacity during 1998 in anticipation of a 
possible launch of PREVEON-TM- (adefovir dipivoxil) for the treatment of HIV 
and AIDS, although no assurance can be given that such product will receive 
regulatory approval or be successfully launched.

NET INTEREST INCOME

    The Company had net interest income of $4.7 million and $3.9 million for 
the quarters ended September 30, 1997 and 1996, respectively, representing an 
increase of 21.6%.  Net interest income was $12.9 million and $10.2 million 
for the nine month periods ended September 30, 1997 and 1996, respectively.  
Net interest income increased in the third quarter of 1997 primarily due to 
the Company's higher average cash and cash equivalents and short-term 
investment balances.

LIQUIDITY AND CAPITAL RESOURCES

    Cash and cash equivalents and short-term investments totalled $332.2 
million at September 30, 1997 compared to $296.0 million at December 31, 
1996. The increase is due to cash proceeds from stock issuances and milestone 
payments during 1997 offset by cash used in operations and to fund capital 
acquisitions. During the remainder of 1997 and for 1998, the Company expects 
to incur research and development and selling, general and administrative 
expenses significantly in excess of amounts incurred in prior periods.

    Net cash used in operations was $7.7 million and $20.4 million for the 
nine month periods ended September 30, 1997 and 1996, respectively.  Cash 
used in operations during the 1996 period included an outstanding receivable 
related to the Company's collaborative agreements.  No such receivable was 
outstanding at September 30, 1997.  The Company believes that its existing 
capital resources, supplemented by net product revenues and contract 
revenues, will be adequate to satisfy its capital needs for the foreseeable 
future.  The Company's future capital requirements will depend on many 
factors, however, including the progress of the Company's research and 
development, the scope and results of preclinical studies and clinical 
trials, the cost, timing and outcomes of regulatory reviews, the rate of 
technological advances, determinations as to the commercial potential of the 
Company's products under development, the commercial performance of VISTIDE 
and any of the Company's products in development that receive marketing 
approval, administrative and legal expenses, the status of competitive 
products, the establishment of manufacturing capacity or third-party 
manufacturing arrangements, the expansion of sales and marketing 
capabilities, possible geographic expansion and the establishment of 
additional collaborative relationships with other companies.

    The Company may in the future require additional funding, which could be 
in the form of proceeds from equity or debt financings or additional 
collaborative agreements with corporate partners.  If such funding is 
required, there can be no assurance that it will be available on favorable 
terms,  if at all.


                                     9


                         PART II.  OTHER INFORMATION


Item 6.  Exhibits and Reports on Form 8-K.

(a) Exhibits

    10.45   Amended and Restated Copromotion Agreement between Registrant and
            Roche Laboratories, Inc. dated September 12, 1997 with
            certain confidential information deleted.

(b) Reports on Form 8-K

    There were no reports on Form 8-K filed for the Quarter ended September 
30, 1997.


                                     10


                                  SIGNATURES

Pursuant to the requirements 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.

                                 GILEAD SCIENCES, INC.
                                 -----------------------------
                                 (Registrant)





Date:    October 30, 1997        /s/ JOHN C. MARTIN  
                                 -----------------------------
                                 John C. Martin
                                 President and Chief Executive Officer




Date:    October 30, 1997        /s/ MARK L. PERRY   
                                 -----------------------------
                                 Mark L. Perry
                                 Vice President, Chief Financial Officer
                                 and General Counsel
                                 (Principal Financial and Accounting Officer)


                                    11