LYNX THERAPEUTICS INC
10-Q, 1997-11-14
MEDICINAL CHEMICALS & BOTANICAL PRODUCTS
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                                  UNITED STATES
                       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 QUARTERLY 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 Number 0-22570


                             Lynx Therapeutics, Inc.
             (Exact name of registrant as specified in its charter)


              Delaware                                           94-3161073
   (State or other jurisdiction of                            (I.R.S. Employer
   incorporation or organization)                            Identification No.)


        3832 Bay Center Place
               Hayward, CA                                         94545
(Address of principal executive offices)                         (Zip Code)


                                 (510) 670-9300
              (Registrant's telephone number, including area code)


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
                                               -----      -----

The  number of  shares  of Common  Stock,  Series B  Preferred  Stock,  Series C
Preferred  Stock,  and Series D Preferred  Stock  outstanding  as of October 31,
1997, were: 5,889,853; 332,288; 123,299; and 40,000, respectively. The Series B,
Series C and Series D Preferred  Stock are  convertible  into Common  Stock on a
ten-for-one  basis.  Information  regarding  the  aggregate  market value of the
Registrant's  voting  stock  is not  included  because  there  is  currently  no
established public trading market for the Company's voting stock.

                                                                    Page 1 of 17
<PAGE>

<TABLE>

                                              Lynx Therapeutics, Inc.


                                                       INDEX


<CAPTION>

PART I            FINANCIAL INFORMATION                                                                        Page

<S>               <C>                                                                                            <C>
Item 1.           Condensed Consolidated Balance Sheets - September 30, 1997
                      and December 31, 1996...............................................................        3

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

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

                  Notes to Condensed Consolidated Financial Statements....................................        6

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


PART II           OTHER INFORMATION

Item 1.           Legal Proceedings.......................................................................       10

Item 2.           Changes in Securities...................................................................       10


Item 3.           Defaults Upon Senior Securities.........................................................       10

Item 4.           Submission of Matters to a Vote of Security Holders.....................................       10

Item 5.           Other Information.......................................................................       10


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

Signatures        ........................................................................................       11

</TABLE>
                                  Page 2 of 17

<PAGE>


PART I FINANCIAL INFORMATION

Item 1. Financial Statements

                             Lynx Therapeutics, Inc.
                      CONDENSED CONSOLIDATED BALANCE SHEETS
                                 (In thousands)

                                                      September 30, December 31,
                                                           1997         1996*
                                                          ----------------------
                                                        (Unaudited)
Assets
Current assets:
   Cash and cash equivalents                               $  3,418    $ 12,109
   Short-term investments                                      --         1,973
   Accounts receivable                                          156         118
   Other current assets                                          98         158
                                                           --------------------
Total current assets                                          3,672      14,358

Property and equipment:
   Leasehold improvements                                     3,795       3,193
   Laboratory and other equipment                             3,434       2,976
                                                           --------------------
                                                              7,229       6,169
   Less accumulated depreciation and amortization            (3,254)     (2,290)
                                                           --------------------
Net property and equipment                                    3,975       3,879

Notes receivable from employees                                 199         175
                                                           --------------------
                                                           $  7,846    $ 18,412
                                                           ====================
Liabilities and stockholders' equity
Current liabilities:
   Accounts payable                                        $    353    $    429
   Accrued compensation                                         240         394
   Accrued professional fees                                    117         169
   Deferred revenue from related parties - current            2,750       3,875
   Other accrued liabilities                                    570         373
                                                           --------------------
Total current liabilities                                     4,030       5,240

Deferred revenue from related parties - long-term               229       2,292
Other noncurrent liabilities                                    171         148

Stockholders' equity:
   Preferred stock                                           27,189      27,189
   Common stock                                              17,478      17,361
   Notes receivable from stockholders                          (460)       (210)
   Deferred compensation                                     (1,514)     (2,092)
   Unrealized gain on marketable securities                       1           3
   Accumulated deficit                                      (39,278)    (31,519)
                                                           --------------------
Total stockholders' equity                                    3,416      10,732
                                                           --------------------
                                                           $  7,846    $ 18,412
                                                           ====================

* The Balance Sheet amounts at December 31, 1996, have been derived from audited
  financial  statements  at that date but do not include all of the  information
  and  footnotes  required  by  generally  accepted  accounting  principles  for
  complete financial statements.

                             See accompanying notes.
                                                                    Page 3 of 17


<PAGE>

<TABLE>
                             Lynx Therapeutics, Inc.
                 CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                    (In thousands, except per share amounts)
                                   (Unaudited)

<CAPTION>
                                               Three Months Ended       Nine Months Ended
                                                 September 30,             September 30,
                                              -------------------------------------------
                                                 1997        1996       1997       1996
                                                 ----        ----       ----       ----

<S>                                           <C>         <C>        <C>         <C>     
Net revenues:
   Revenues from collaborative arrangements
     with related parties                     $  1,124    $  7,875   $  3,411    $  8,625
   Other revenues                                  100          40        270         244
                                              -------------------------------------------
Total revenues                                   1,224       7,915      3,681       8,869

Operating  expenses:
   Research and development                      3,930       2,546     10,382       7,880
   General and administrative                      427         833      1,444       2,000
                                              -------------------------------------------
Total operating  expenses                        4,357       3,379     11,826       9,880
                                              -------------------------------------------

Income/(loss) from operations                   (3,133)      4,536     (8,145)     (1,011)

Interest income                                     82         132        386         462
                                              -------------------------------------------
Net income/(loss)                             $ (3,051)   $  4,668   $ (7,759)   $   (549)
                                              ===========================================

Net income/(loss) per share                   $  (0.95)   $   0.61   $  (2.44)   $  (0.23)
                                              ===========================================

Shares used in per share computation             3,208       7,700      3,184       2,339
                                              ===========================================

<FN>
                             See accompanying notes.
</FN>
</TABLE>
                                                                    Page 4 of 17

<PAGE>


<TABLE>
                             Lynx Therapeutics, Inc.
                 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (In thousands)
                                   (Unaudited)

<CAPTION>
                                                                                Nine Months Ended
                                                                                   September 30,
                                                                              --------------------
                                                                                 1997       1996
                                                                                 ----       ----
<S>                                                                           <C>         <C>      
Cash flows from operating activities
Net loss                                                                      $ (7,759)   $   (549)
Adjustments to reconcile net loss to net cash used in operating activities:
     Depreciation and amortization                                                 964         725
     Deferred compensation                                                         429          30
     Changes in operating assets and liabilities:
         Accounts receivable                                                       (38)     (3,952)
         Other current assets                                                       60         (79)
         Accounts payable                                                          (76)       (465)
         Accrued liabilities                                                        (9)        (24)
         Advance from collaborative partner                                       --            97
         Deferred revenue from related parties                                  (3,188)     (1,125)
         Other noncurrent liabilities                                               23          43
                                                                              --------------------
Net cash used in operating activities                                           (9,594)     (5,299)

Cash flows from investing activities
Purchases of short-term investments                                               --       (25,957)
Maturities of short-term investments                                             1,971      23,000
Purchases of property and equipment                                             (1,060)     (1,297)
Notes receivable from employees                                                   (274)        188
                                                                              --------------------
Net cash provided by/(used in) investing activities                                637      (4,066)

Cash flows from financing activities
Issuance of common stock                                                           266          47
                                                                              --------------------
Net cash provided by  financing activities                                         266          47
                                                                              --------------------

Net decrease in cash and cash equivalents                                       (8,691)     (9,318)
Cash and cash equivalents at beginning of period                                12,109      13,779
                                                                              --------------------
Cash and cash equivalents at end of period                                    $  3,418    $  4,461
                                                                              ====================

<FN>
                             See accompanying notes.
</FN>
</TABLE>
                                  Page 5 of 17

<PAGE>


                             Lynx Therapeutics, Inc.
              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

                               September 30, 1997
                                   (Unaudited)


1.       Basis of presentation

         The condensed consolidated interim financial statements included herein
have been  prepared by the  Company,  without  audit,  pursuant to the rules and
regulations   promulgated  by  the  Securities  and  Exchange   Commission  (the
"Commission"). Certain prior year amounts have been reclassified to conform with
current year presentation. Certain information and footnote disclosures normally
included in financial  statements prepared in accordance with generally accepted
accounting  principles  have  been  omitted  pursuant  to  Commission  rules and
regulations;  nevertheless,  the  Company  believes  that  the  disclosures  are
adequate  to make  the  information  presented  not  misleading.  The  financial
statements  include  all  accounts  of  the  Company  and,  in  the  opinion  of
management,  contain  all  adjustments,  consisting  only  of  normal  recurring
adjustments,  necessary to present  fairly the  financial  position,  results of
operations, and cash flows of the Company for the interim periods presented. The
results of  operations  for the three and nine months ended  September 30, 1997,
are not necessarily indicative of the results for the full year.

         These  financial  statements  should  be read in  conjunction  with the
audited  consolidated  financial  statements and notes thereto for the Company's
year ended December 31, 1996.

2.       Net loss per share

         Net loss per share is calculated  based on the weighted  average number
of common shares  outstanding  during the period.  Common equivalent shares from
stock options and convertible  Preferred Stock are excluded from the computation
as their effect is  antidilutive.  In 1997, the Financial  Accounting  Standards
Board issued Statement of Financial  Accounting  Standards No. 128 ("SFAS 128"),
"Earnings  Per Share"  ("EPS").  SFAS 128 requires  that  companies  present two
measures of earnings per share,  basic and diluted.  Basic earnings per share is
computed by dividing  income or loss  applicable to common  shareholders  by the
weighted-average  number of common  shares  outstanding  for the  period,  while
diluted EPS reflects the potential  dilution of  securities  that could share in
the  earnings  of the  company.  SFAS 128 is  effective  for  interim and annual
periods  ending  after  December  15,  1997.  The  Company  does not believe the
adoption  of SFAS  128  will  have a  material  impact  on its  loss  per  share
calculations.

3.       Collaborative Arrangements

         The Technology  Development  and Services  Agreement,  dated October 2,
1995, between Lynx and Hoechst Marion Roussel,  Inc. was amended on September 1,
1997. The amendment  modifies the technology  milestone included in the original
agreement and extends the date by which such  milestone  must be achieved  under
the contract. If the subject milestone is not met by such date, then Hoechst may
either terminate the agreement or extend the technology milestone date.

4.       Subsequent Event

         On October 1, 1997, Lynx closed a private  placement of common stock at
$10 per share,  resulting in gross  proceeds of $26.8  million.  Proceeds of the
financing will be used both to continue  development of the Company's  Massively
Parallel  Signature  Sequencing  technology  and to build capacity for its early
commercial uses.

                                                                    Page 6 of 17

<PAGE>


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

         Except for the historical  information  contained herein, the following
discussion   contains   forward-looking   statements   that  involve  risks  and
uncertainties.  The Company's actual results could differ  materially from those
discussed  here.  Factors  that could cause or  contribute  to such  differences
include,  but are not limited to, those discussed in this section, as well as in
the Company's  annual report (Form 10-K) filed with the  Securities and Exchange
Commission for the fiscal year ended December 31, 1996.

Overview

         Lynx has developed a unique, proprietary technology for the analysis of
DNA called Massively Parallel Signature Sequencing. Massively Parallel Signature
Sequencing,  the Company believes,  is the only technology  available today that
can analyze and identify, simultaneously, very large numbers of DNA molecules or
fragments from a single biological  sample.  Lynx's technology has several major
applications and each of these can be applied to the genomes of man,  pathogenic
organisms,   and  commercially   important  plants  and  animals.   These  major
applications  include  gene  expression  analysis,  gene  expression  databases,
genomic sequencing and high resolution genomic maps.

         In 1995, Lynx launched an internal biology-based drug discovery program
to  establish  the  concepts,   strategies  and  techniques  necessary  for  the
identification  of drug  targets  based on the  analysis  of  differential  gene
expression.  This program is  ultimately  designed to capitalize on the power of
Massively Parallel Signature Sequencing,  but in its early phase it is utilizing
know-how and  intermediate  technologies  currently  resident  within Lynx.  The
initial projects are centered on the medically  important field of neurovascular
diseases that are  particularly  well suited to analyses with the Company's gene
sequencing and target discovery technologies.

         Lynx  was  originally  formed  in 1992  to  target  inappropriate  gene
expression  in disease with  synthetic  DNA  fragments  designed to bind to, and
functionally  block,  genes whose  inappropriate  expression could be correlated
with  disease.  Lynx's  early  efforts in this area  formed the  foundation  and
understanding for the development of its new genetic technologies.  The research
efforts have  resulted in a compound  (LR-3280)  for the  prevention of coronary
artery restenosis. The acute safety segment of its Phase II study on the LR-3280
has recently been completed.  Certain  follow-up  measurements and analyses from
the  clinical  trial  are  expected  to  be  completed   early  next  year.  Two
pharmaceutical  companies  have purchased the rights to market that compound and
have also committed to bear the costs of its continued development.

         Lynx  has  been   unprofitable   since  its  inception  and  may  incur
substantial losses for the next several years, due primarily to the expansion of
its research and development programs,  including additional  development of its
Massively Parallel Signature Sequencing  technology.  Lynx may generate revenues
based on its agreements with  collaborative  partners as a result of achievement
of the milestones defined in the agreements. However, there is no guarantee that
the  milestones  will  be  achieved  or that  the  technologies  will be  proven
successful.  Lynx does not anticipate that it will generate significant revenues
and profits,  if any, from the commercial  sale of its products and services for
several  years,  if not longer.  There can be no  assurance  that Lynx will ever
successfully  develop  and market any of its  proposed  products or that it will
ever be able to achieve or sustain profitability.

         Lynx's  business is subject to significant  risks,  including the risks
inherent in its research and development efforts,  uncertainties associated with
obtaining and enforcing patents,  the lengthy and expensive  regulatory approval
process,  and possible  competition from other products.  The Massively Parallel
Signature  Sequencing  program is dependent upon the  successful  integration of
independent  technologies,  each of  which  has its own  development  risks.  In
addition,  the  technology  could  face  competition  from  the  development  of
similarly  efficient,  or better,  combinations  of novel cloning and sequencing
techniques.  Lynx's therapeutic  compounds may not reach the market for a number
of reasons

                                                                    Page 7 of 17

<PAGE>

even if they appear  promising  at early  stages of  development.  Such  reasons
include,  but are not limited to, the possibilities that the compounds are found
to be toxic or  ineffective  during  clinical  trials,  the  failure  to receive
necessary regulatory approvals,  the difficulty to manufacture on a large scale,
or the  inability  to  market a  compound  due to  proprietary  rights  of third
parties.

Results of Operations

Revenue

         Lynx had total revenues of approximately  $1.2 million and $7.9 million
for the quarters  ended  September 30, 1997,  and 1996,  respectively.  The 1997
revenue was comprised of approximately  $1.1 million earned under  collaborative
agreements  with  corporate  partners,  $60,000 in product  revenue  and $40,000
earned under a government grant. The 1996 revenue was comprised of approximately
$7.5 million in initial license fees under collaborative  agreements with Tanabe
Seiyaku Co., Ltd and Schwarz Pharma AG;  $375,000  earned under a  collaborative
agreement with Hoechst Marion Roussel; and $40,000 from a government grant.

         Lynx had revenues of approximately $3.7 million and $8.9 million in the
nine months ended September 30, 1997, and 1996,  respectively.  The 1997 revenue
consisted of approximately  $3.4 million in collaborative  revenue,  $145,000 in
product revenue and $125,000 in grant revenue. The 1996 revenue was comprised of
approximately   $7.5  million  in  initial   license   fees,   $1.1  million  in
collaborative revenue and $244,000 earned from a government grant.

         Revenue will  continue to fluctuate  based on activity with current and
potential  corporate  partners,   achievement  of  milestones,   and  timing  of
government grant funding.

Operating Expenses

         Research and development expenses were $3.9 million and $2.5 million in
the three months ended September 30, 1997, and 1996, respectively.  For the nine
month  periods  ended  September 30, 1997,  and 1996,  research and  development
expenses were  approximately  $10.4 million and $7.9 million,  respectively.  In
both the three and nine month  periods,  the increases were primarily due to the
costs  associated with increased  levels of research and development  personnel,
and the amortization of deferred  compensation  recorded in conjunction with the
Agreement of Merger between Lynx and its majority owned subsidiary,  Spectragen,
Inc.  Lynx  expects its  research  and  development  expenses to increase due to
planned spending for ongoing research and technology  development activities and
new applications.

         General and administrative expenses were approximately $427,000 for the
quarter ended  September 30, 1997, and $833,000 for the quarter ended  September
30, 1996. The decrease was due to lower corporate development and legal expenses
in the third  quarter of 1997 as  compared to the third  quarter of 1996,  which
reflected the costs  associated with the signing of two corporate  collaborative
agreements.  General and administrative expenses were approximately $1.4 million
for the nine months ended  September 30, 1997,  compared to  approximately  $2.0
million for the nine months  ended  September  30, 1996.  As in the  three-month
period, the decrease was due to lower corporate  development and legal expenses,
as well as slightly lower headcount related  expenses.  Lynx expects to continue
to incur  substantial  administrative  expenses in support of its  research  and
development efforts.

Interest Income

         Interest  income was  approximately  $82,000 and $132,000 for the three
months ended  September 30, 1997,  and 1996,  respectively.  For the nine months
ended September 30, 1997, and 1996,  interest income was approximately  $386,000
and $462,000,  respectively. The decrease was due to lower average cash balances
in the three and  nine-month  periods in 1997 as compared to the same periods in
1996.

                                                                    Page 8 of 17

<PAGE>

Liquidity and Capital Resources

         The net cash used in operating activities of approximately $9.6 million
for the nine months ended September 30, 1997,  differs from the net loss for the
same  period  primarily  due to  current  period  recognition  of a  portion  of
previously  deferred  revenue,  offset in part by depreciation and amortization,
and deferred  compensation  expense.  Net cash provided by investing  activities
resulted from  maturities of short-term  investments  partially  offset by costs
associated  with purchases of capital  equipment and the expansion of laboratory
facilities.  Lynx expects that future capital  expenditures will be commensurate
with growth in the employee base and the  development of its Massively  Parallel
Signature Sequencing and other technologies.  At September 30, 1997, Lynx's cash
and cash equivalents were approximately $3.4 million.

         On October 1, 1997, Lynx closed a private  placement of common stock at
$10 per share,  resulting in gross proceeds of $26.8 million.  Lynx plans to use
the funds to continue development of its Massively Parallel Signature Sequencing
technology and to build  capacity for its early  commercial  uses.  Pending such
uses as described  above,  Lynx intends to invest its excess cash in short-term,
investment grade, interest-bearing securities or certificates of deposit.

         Since  commencing  operations  as  an  independent  company,  Lynx  has
obtained funding for its operations  through sales of preferred and common stock
to  venture  capital  investors,   institutional  investors,  and  collaborative
partners;  revenue from  collaborative  research and  development  arrangements;
interest income;  product sales;  and government  grants.  The cost,  timing and
amount  of  funds  required  for  specific  uses by  Lynx  cannot  be  precisely
determined  at this time and will be based upon Lynx's  progress in its research
and  development,  the scope and results of  preclinical  research  and clinical
trials,  the cost and timing of regulatory  approvals,  administrative and legal
costs, the establishment of corporate collaborations and other arrangements, and
the availability of alternate methods of financing.

         Lynx  expects  to  incur   substantial  and  increasing   research  and
development  expenses  and  intends  to seek  additional  financing,  as needed,
through debt or equity offerings and from collaborative research and development
agreements  with  corporate  partners.  There  can  be  no  assurance  that  any
additional  financing required by Lynx will be available or, if available,  will
be on terms  favorable to Lynx. The Company  believes that, at current  spending
levels,  its existing capital  resources and interest income thereon will enable
it to maintain its current and planned operations through mid 1999.

                                                                    Page 9 of 17

<PAGE>


PART II  OTHER INFORMATION

Item 1.  Legal Proceedings

             None

Item 2.  Changes in Securities

             None

Item 3.  Defaults upon Senior Securities

             None

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

             None

Item 5.  Other Information

             None

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

           a) Exhibits - The following documents are filed as Exhibits to
                         this report:

              Exhibit
              Number     Description
              ------     -----------
              10.32      First Amendment to Technology Development and Services
                         Agreement, dated September 1, 1997, between the Company
                         and Hoechst Aktiengesellschaft and its Subsidiary,
                         Hoechst Marion Roussel.**

              27.1       Financial Data Schedule

           b) No reports on Form 8-K were filed during the quarter ended 
              September 30, 1997.


**Portions  of this  agreement  have been  deleted  pursuant  to our request for
  confidential treatment.

                                                                   Page 10 of 17


<PAGE>


                                                    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.


                                        LYNX THERAPEUTICS, INC.


                                        /s/   Sam Eletr
                                        ------------------------------------
                                        By:      Sam Eletr, Ph.D.
                                                 Chief Executive Officer and
                                                 Chairman of the Board
                                        Date:    November 14, 1997


                                        /s/  Edward C. Albini
                                        ------------------------------------
                                        By:      Edward C. Albini
                                                 Chief Financial Officer
                                                 (Principal Financial and
                                                 Accounting Officer)
                                        Date:    November 14, 1997


                                                                   Page 11 of 17



                                                                   Exhibit 10.32

                                               Text omitted and filed separately
                                                Confidential Treatment Requested
                                             Under 17 C.F.R ss.ss.200.80(b) (4),
                                                            200.83 and 240.24b-2


                               FIRST AMENDMENT TO
                  TECHNOLOGY DEVELOPMENT AND SERVICES AGREEMENT


This amendment  ("First  Amendment") to the Technology  Development and Services
Agreement  ("Agreement")  is  made  and  entered  into  as of the  first  day of
September, 1997 (the "First Amended Effective Date") by LYNX THERAPEUTICS, INC.,
a  Delaware  corporation,   and  its  majority-owned   subsidiaries,   including
SPECTRAGEN,  INC.,  (collectively  referred  to as "Lynx")  and  Hoechst  Marion
Roussel,  Inc., a Delaware corporation,  to whom the Agreement was assigned, and
its affiliates ("HMRI").

RECITALS

WHEREAS,  Lynx and HMRI agree that the  Practical  Application  Milestone as set
forth in the Agreement needs to be amended;

WHEREAS,  HMRI  continues to desire early,  preferred  access to Lynx's  library
analysis capabilities;

NOW THEREFORE,  in consideration of the foregoing premises and the covenants and
promises in the Agreement and in this First Amendment.

ARTICLE 1 - DEFINITIONS

Capitalized  terms used in this First Amendment shall have the meanings ascribed
to them in the Agreement  unless  otherwise  defined in or amended by this First
Amendment.

1.1 "Practical  Application  Milestone" means  achievement by Lynx of sufficient
development of MPSS to demonstrate that the  reproducibility  and specificity of
the  technology  is such that it is ready  for  practical  application,  as more
specifically set forth in Exhibit A attached hereto.

                                                                   Page 12 of 17

<PAGE>

ARTICLE 2 - DEVELOPMENT OF MPSS TECHNOLOGY

2.1 Lynx Program. Lynx shall continue to use commercially  reasonable efforts in
performing the Development Work,  consistent with its normal business practices,
with the goal of achieving the Practical  Application  Milestone  expeditiously.
Notwithstanding,  Lynx makes no  representations,  warranty or  guarantee of any
kind that it can or will  achieve the  Practical  Application  Milestone  at any
time.

2.2 Reports and Information. No amendment is made to this Article.

2.3 Ownership of Technology. No amendment is made to this Article.

2.4  Development  Payments to Lynx. Lynx  acknowledges  that Hoechst has paid to
Lynx three million U.S. Dollars ($3,000,000),  in part, for Lynx's commitment to
undertake the Development  Work. Lynx agrees that no additional  payment by HMRI
to Lynx shall be required for Lynx's  continued  effort to achieve the Practical
Application  Milestone.  Within  thirty  days after Lynx  notifies  HMRI that it
believes the Practical Application Milestone has been achieved and provides HMRI
with the data  demonstrating  achievement  of such  milestone,  HMRI will, if in
agreement,  so indicate its  agreement  or will  indicate  that,  in HMRI's sole
discretion, the data is sufficiently satisfactory to HMRI that the milestone has
effectively been achieved. In either case, HMRI, in place of Hoechst,  agrees to
pay Lynx Eight Million U.S. Dollars  ($8,000,000) within fifteen (15) days after
such  indication.  In the  event  that  Lynx  does  not  achieve  the  Practical
Application  Milestone by January 15, 1998,  HMRI,  pursuant to Article 5.1, may
terminate the Agreement, as amended hereby, or HMRI may, in its sole discretion,
allow Lynx up to four months  additional time (additional from January 15, 1998)
to achieve the  Practical  Application  Milestone and HMRI will indicate to Lynx
the extended  milestone  date.  If  additional  time beyond  January 15, 1998 is
granted,  then the Practical  Application  Milestone payment shall be reduced by
Seven Hundred Fifty Thousand U.S.  Dollars  ($750,000) for each month thereafter
that Lynx does not achieve the Practical  Application  Milestone (with a maximum
reduction of Three  Million U.S.  Dollars  ($3,000,000).  In the event that Lynx
does not achieve the Practical  Application  Milestone by the extended milestone
date, HMRI may, in its sole discretion  exercisable during the thirty day period
after the  extended  milestone  date,  pay Lynx the  milestone  payment then due
($8,000,000  less any  reduction  as set forth  above) in lieu of the  milestone
payment contemplated hereby, in which case the Practical  Application  Milestone
will be  deemed  to have  been  achieved  on  extended  milestone  date.  If the
Practical Application Milestone will be deemed to have been achieved on extended
milestone date. If the Practical Application Milestone is not so achieved by the
extended  milestone  date  and HMRI  does not  elect  to  regard  the  Practical
Application Milestone as having been achieved, the Agreement, as amended hereby,
will terminate on the thirtieth day following the extended milestone date.

                                                                   Page 13 of 17

<PAGE>

ARTICLE 3 - LYNX MPSS SERVICES

No amendment is made to this Article.

ARTICLE 4 - CONFIDENTIALITY

No amendment is made to this Article.

ARTICLE 5 - TERM AND TERMINATION

5.1 Term.  The provisions of Article 5.1 of the Agreement are amended to provide
for termination or expiration as contemplated by Article 2.4.

5.2 All other terms and conditions of Article 5 of the Agreement are not amended
hereby.

ARTICLE 6 - REPRESENTATIONS AND WARRANTIES

No amendment is made to this Article.

ARTICLE 7 - MISCELLANEOUS

No amendment is made to this Article except that all notices to Hoechst pursuant
to article 7.6 of this Agreement shall hereafter be delivered to

Hoechst Marion Roussel, Inc.
2110 East Galbraith Road
Cincinnati, OH 45215
Attention: General Patent Counsel


IN WITNESS  WHEREOF,  the parties hereto have duly executed this First Amendment
as of the date first written above.

LYNX THERAPEUTICS, INC.                      HOECHST MARION ROUSSEL, INC.


By: /s/ Sam Eletr                            By: /s/ Norbert Riedel
    ---------------------------                  -------------------------------

Title  CEO                                   Title   VP, Head of Biotechnology
     --------------------------                    -----------------------------

Date  September 10, 1997                     Date  September 19, 1997
     --------------------------                   ------------------------------

                                                                   Page 14 of 17



<PAGE>

                                    EXHIBIT A

                         Practical Application Milestone


The achievement of the Practical  Application  Milestone will be demonstrated by
testing three  components of the Lynx Method.  Those  components  will be termed
[...***...],  [...***...] and  [...***...].  These three  components of the Lynx
method will be tested in the chosen  mammalian cell culture system  ([...***...]
and  [...***...]  induced  with  [...***...]  and  [...***...]  according to the
[...***...]) to provide sufficient support for validation of this technology.

In terms of [...***...],  this method must  demonstrate it is at least as useful
as existing methods available to HMR in which this mammalian cell culture system
has been  tested.  To that end,  it is agreed  that HMR will share with Lynx the
identity  and  expression   pattern  of  a  number  of  genes   ([...***...]  to
[...***...])  known to be  [...***...]  in this  biological  paradigm  and these
[...***...]  genes must appear in the Lynx datasets and reflect the  qualitative
[...***...]  expected from known results as well.  Should there be a discrepancy
in the appearance of any of these  [...***...]  expressed  genes,  Lynx will run
appropriate  Northern  Blot  analyses to determine  the  existence or absence of
those genes in question in that biological material. In addition,  HMR will also
share with Lynx the identity of all  available  genes from internal and external
sources  based on this  biological  model.  In order to  accommodate  the  known
efficiency of the [...***...] used in the Lynx experiment,  [...***...]  percent
of those sequences from this HMR dataset must also appear in the Lynx validation
data. For this section of the validity evaluation, should any sequences from the
HMR  dataset  not  appear in the Lynx  dataset,  HMR will  choose a  maximum  of
[...***...] sequences which Lynx will probe against their libraries to determine
their presence or absence. The presence of [...***...] of these genes during the
library probe will indicate  that the  Practical  Application  Milestone has not
been met. The absence of these genes in the library  probe will be sufficient to
remove  them  from  further  consideration  in the  validation  experiment.  All
sequence  data  sets  delivered  by HMR  will be  analyzed  to  assure  there is
sufficient  sequence  information,  given  the  expected  [...***...]  near  the
[...***...] end of the sequence, to overlap with the expected Lynx signature.

In terms of  [...***...],  this method must  provide  more  information  than is
currently available to HMR. To that end, HMR will choose [...***...]  additional
genes, other than those above,  which are  differentially  expressed in the Lynx
validation  experiment with a minimum expression level of [...***...] copies per
sequencing  run  [...***...]  and confirm  their  existence  through  biological
evaluation,  i.e.  northern blot.  These genes will be chosen by HMR at the time
the  data  become   available  from  the  first   [...***...]   sequencing  runs
[...***...].

In terms of [...***...] of the Lynx  technology,  all genes repeated in the Lynx
datasets,  [...***...]  of  expressed  genes,  must  have,  within  the  set  of
[...***...] as well as within the set of [...***...]  sequencing runs, a maximum
difference within any pair of that set falling within [...***...].

- ------------------
*Confidential Treatment Requested

                                                                   Page 15 of 17

<PAGE>

Additionally,  prior to beginning the validation sequencing,  Lynx will complete
its internal  [...***...]  sequencing  experiment  and forward this data to HMR.
Also, HMR will hold that the validation will be met only when  [...***...]  sets
of [...***...] sequencing runs of [...***...] and [...***...] sequencing runs of
[...***...]  material meet the above standards internally and across the sets as
described in the validation scheme.  This will provide assurance to HMR that the
technology  will be applicable with minimal  sequencing  runs. It is also agreed
that when the first [...***...] sequencing runs have been completed according to
the  attached  scheme,  HMR will  analyze the dataset to  determine  the maximal
signature length necessary for the remaining  validation  experiment only. These
results will be applied to the remaining [...***...] sequencing runs.

Also, although not formally part of the validation experiment, HMR will validate
the  preparation of [...***...] at Lynx by performing  Northern blot analyses on
one [...***...]  sample each from the [...***...] and [...***...]  cell cultures
for selected  genes on this  material as well as material  prepared at HMR using
the  identical  protocols.  To this end, Lynx agrees to provide  [...***...]  of
[...***...] from one each of the [...***...] and [...***...] samples.



/s/   Sam Eletr                                     /s/   Norbert Riedel
- ----------------------------                        ----------------------------
Lynx Therapeutics, Inc.                             for Hoechst Marion Roussel

- ------------------
*Confidential Treatment Requested

                                                                   Page 16 of 17


<TABLE> <S> <C>


<ARTICLE>                     5
<LEGEND>

         THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
         QUARTERLY  REPORT  PURSUANT  TO SECTION  13 OR 15(d) OF THE  SECURITIES
         EXCHANGE ACT OF 1934 FOR THE FORM 10-Q PERIOD ENDED SEPTEMBER 30, 1997.
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