ENTREMED INC
10-Q, 1999-11-12
MEDICAL LABORATORIES
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<PAGE>   1


                                    FORM 10-Q

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

[x]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES
     EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 1999

[ ]  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 0-20713
                                                -------

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

<TABLE>
<S>                                                          <C>
           Delaware                                              58-1959440
           --------                                              ----------
(State or other jurisdiction of                      (I.R.S. Employer Identification No.)
incorporation or organization)
</TABLE>

                            9640 Medical Center Drive
                               Rockville, Maryland
                               -------------------
                    (Address of principal executive offices)

                                      20850
                                      -----
                                   (Zip code)

                                 (301) 217-9858
                                 --------------
              (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
    --------        --------

Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date.

       Class                                Outstanding at November 10, 1999
- ----------------------------                --------------------------------
Common Stock $.01 Par Value                          14,706,133


<PAGE>   2


                                 ENTREMED, INC.


                                Table of Contents

<TABLE>
<CAPTION>
PART I.   FINANCIAL INFORMATION                                                                       PAGE
                                                                                                      ----

<S>                                                                                                 <C>
Item 1 -- Financial Statements

Consolidated Balance Sheets
as of September 30, 1999 and December 31, 1998                                                        3

Consolidated Statements of
Operations for the Three Months Ended
September 30, 1999 and 1998, and the Nine Months
Ended September 30, 1999 and 1998                                                                     4

Consolidated Statements of Cash
Flows for the Nine Months Ended September 30, 1999
and 1998                                                                                              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 1 --      Legal Proceedings                                                                     10

Item 2 --      Changes in Securities                                                                 10

Item 3 --      Defaults upon Senior Securities                                                       10

Item 4 --      Submission of Matters to Vote of
               Security Holders                                                                      10

Item 5 --      Other Information                                                                     10

Item 6 --      Exhibits and Reports on Form 8-K                                                      11

SIGNATURES                                                                                           12
</TABLE>



                                       2
<PAGE>   3


                                 ENTREMED, INC.
                           CONSOLIDATED BALANCE SHEETS

<TABLE>
<CAPTION>
                                                                                      September 30,           December 31,
                                                                                           1999                   1998
                                                                                      -------------          -------------
ASSETS                                                                                 (unaudited)
Current assets:
<S>                                                                                   <C>                    <C>
   Cash and cash equivalents                                                          $  39,898,939          $  30,818,689
   Short-term investments                                                                         -              4,352,371
   Interest receivable                                                                      141,698                186,927
   Accounts receivable                                                                      549,042                112,383
   Prepaid expenses and other                                                               170,379                170,877
                                                                                      -------------          -------------
Total current assets                                                                     40,760,058             35,641,247

Furniture and equipment, net                                                              3,971,723              2,979,237

Other assets                                                                                905,733                953,519
                                                                                      -------------          -------------
      Total assets                                                                    $  45,637,514          $  39,574,003
                                                                                      =============          =============


LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
   Accounts payable                                                                   $   3,823,161          $   2,093,017
   Accrued liabilities                                                                    1,385,100              1,332,682
   Deferred revenue                                                                          75,000              2,945,833
                                                                                      -------------          -------------
Total current liabilities                                                                 5,283,261              6,371,532

Minority interest                                                                            20,090                 14,407

Stockholders' equity:
   Convertible preferred stock, $1.00 par and $1.50
     Liquidation value:
     5,000,000 shares authorized, none issued and
     outstanding at September 30, 1999 (unaudited)
     and December 31, 1998                                                                        -                      -
   Common stock, $.01 par value:
     35,000,000 shares authorized, 14,705,883 (unaudited) and 13,123,031 shares
     issued and outstanding at September 30, 1999 and
     December 31, 1998, respectively                                                        147,059                131,230
   Additional paid-in capital                                                           107,547,268             78,364,136
   Accumulated deficit                                                                  (67,360,164)           (45,307,302)
                                                                                      -------------          -------------
Total stockholders' equity                                                               40,334,163             33,188,064
                                                                                      -------------          -------------
      Total liabilities and stockholders' equity                                      $  45,637,514          $  39,574,003
                                                                                      =============          =============
</TABLE>



    The accompanying notes are an integral part of the financial statements.



                                       3
<PAGE>   4


                                 ENTREMED, INC.
                      CONSOLIDATED STATEMENTS OF OPERATIONS
                                   (UNAUDITED)


<TABLE>
<CAPTION>
                                                        Three Months Ended                      Nine months ended
                                                           September 30,                           September 30,
                                                      1999                 1998               1999                1998
                                                  --------------------------------        --------------------------------

Revenues:
<S>                                               <C>                 <C>                 <C>                 <C>
     Collaborative research and development       $  1,014,166        $  1,042,500        $  3,099,166        $  3,127,500
     Licensing                                         303,333              50,000             403,333             150,000
     Grant revenues                                    128,897             241,262             287,716             376,718
     Royalty revenues                                  288,108                   -             716,319                   -
     Other revenues                                     51,813               9,675              52,853               9,675
                                                  ------------        ------------        ------------        ------------

Total revenues                                       1,786,317           1,343,437           4,559,387           3,663,893


Expenses:
     Research & development                          6,959,576           4,481,485          21,686,171          10,326,215
     General & administrative                        2,223,748           1,380,387           6,122,655           3,907,287
                                                  ------------        ------------        ------------        ------------
                                                     9,183,324           5,861,872          27,808,826          14,233,502

Investment income                                      501,290             559,126           1,196,577           1,685,543
                                                  ------------        ------------        ------------        ------------

Net loss                                          $ (6,895,717)       $ (3,959,309)       $(22,052,862)       $ (8,884,066)
                                                  ============        ============        ============        ============

Net loss per share (basic and diluted)            $      (0.48)       $      (0.31)       $      (1.63)       $      (0.71)
                                                  ============        ============        ============        ============
Weighted average number of shares
      outstanding (basic and diluted)               14,247,373          12,934,183          13,506,269          12,557,496
                                                  ============        ============        ============        ============
</TABLE>







    The accompanying notes are an integral part of the financial statements.


                                       4
<PAGE>   5


                                 ENTREMED, INC.
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (UNAUDITED)
<TABLE>
<CAPTION>
                                                                       Nine Months Ended
                                                                         September 30,
                                                                   1999                   1998
                                                               -----------------------------------

CASH FLOWS FROM OPERATING ACTIVITIES
<S>                                                             <C>                 <C>
Net loss                                                        $(22,052,862)       $ (8,884,066)
Adjustments to reconcile net loss to net cash
     used by operating activities:
     Depreciation                                                    675,331             559,760
     Loss on disposal of furniture & equipment                        65,674                   -
     Minority interest                                                 5,683               4,901
     Changes in assets and liabilities:
        Accounts receivable                                         (436,659)             17,177
        Interest receivable                                           45,229             228,800
        Prepaid expenses and other                                    48,284            (108,674)
        Accounts payable                                           1,730,144             409,093
        Accrued liabilities                                           52,418            (349,132)
        Deferred revenue                                          (2,870,833)         (1,367,499)
                                                                ------------        ------------
      Net cash used by operating activities                      (22,737,591)         (9,489,640)

CASH FLOWS FROM INVESTING ACTIVITIES
Maturities of short-term investments                               4,352,371          42,757,660
Purchases of short-term investments                                        -         (19,579,726)
Other investments                                                          -            (250,000)
Purchases of furniture & equipment                                (1,733,491)           (667,203)
                                                                ------------        ------------
      Net cash provided by investing activities                    2,618,880          22,260,731

CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from option, warrant exercises and sale of stock         29,198,961           3,348,340
                                                                ------------        ------------
      Net cash provided by financing activities                   29,198,961           3,348,340

Net increase in cash and cash equivalents                          9,080,250          16,119,431
Cash and cash equivalents at beginning of period                  30,818,689          18,232,491
                                                                ------------        ------------
Cash and cash equivalents at end of period                      $ 39,898,939        $ 34,351,922
                                                                ============        ============
</TABLE>





    The accompanying notes are an integral part of the financial statements.



                                       5
<PAGE>   6


                                 ENTREMED, INC.
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                         SEPTEMBER 30, 1999 (UNAUDITED)



1.          BASIS OF PRESENTATION

            The accompanying unaudited consolidated financial information of
            EntreMed, Inc. (the "Company") includes the accounts of its 85%
            owned subsidiary, Cytokine Sciences, Inc. Cytokine Sciences was
            formed in June 1996 and was capitalized with $250,000 by EntreMed
            for the purpose of acquiring the assets of Innovative Therapeutics,
            Inc., which acquisition was completed in July 1996 in exchange for
            15% of the common stock of Cytokine Sciences, Inc.

            The accompanying unaudited consolidated financial statements have
            been prepared in accordance with generally accepted accounting
            principles for interim financial information and in accordance with
            the instructions to Form 10-Q and Article 10 of Regulation S-X.
            Accordingly, such consolidated financial statements do not include
            all of the information and disclosures required by generally
            accepted accounting principles for complete financial statements. In
            the opinion of management, all adjustments (consisting of normal
            recurring accruals) considered necessary for a fair presentation
            have been included. Operating results for the nine-month period
            ended September 30, 1999 are not necessarily indicative of the
            results that may be expected for the year ending December 31, 1999.
            For further information, refer to the Company's audited financial
            statements and footnotes thereto included in the Company's Form 10-K
            for the year ended December 31, 1998.


2.          CONTINGENCIES

            The Company is a defendant in a lawsuit initiated in August 1995 in
            the United States District Court for the Eastern District of
            Tennessee by Bolling, McCool & Twist ("BMT"), a consulting firm. In
            the suit, BMT asserts that the Company breached an agreement between
            BMT and the Company by failing to pay BMT certain fees it asserts
            are owed under the agreement. More specifically, BMT has asserted a
            claim for the payment of services rendered in the approximate amount
            of $50,000 and seeks a success fee in an unspecified amount in
            connection with the Bristol-Myers Squibb Company Collaboration ("BMS
            Collaboration"). The judge in the case bifurcated the proceeding
            into two phases: an adjudication of whether the Company breached its
            agreement with BMT and then a damage phase. After a trial on the
            merits the jury found in favor of BMT on the breach of contract
            claim. A trial to determine damages had been scheduled for April 14,
            1998. However, on April 6, 1998, the court issued an Order pursuant
            to which damages were limited to those arising during the term of
            the Agreement, which terminated on November 1, 1995. On May 6, 1999,
            the court confirmed its decision by granting the Company's motion
            for summary judgment and limiting the Company's damages to
            approximately $50,000 plus interest. Thus, this litigation at the
            trial level has been concluded. BMT has filed an appeal and the
            Company has cross-appealed. The Company cannot predict the outcome
            of such appeal. However, the Company intends to continue to contest
            any further action vigorously and believes that this proceeding will
            not have a material adverse effect on the Company or on its
            financial condition, although there can be no assurance that this
            will be the case.




                                       6
<PAGE>   7


ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS.

GENERAL

               Since its inception in September 1991, the Company has devoted
substantially all of its efforts and resources to sponsoring and conducting
research and development on its own behalf and through collaborations with
corporate partners and academic research and clinical institutions, and
establishing its facilities and hiring personnel. Through September 30, 1999,
with the exception of license fees, research and development funding, royalty
payments, and certain research grants, the Company has not generated any revenue
from operations. The Company anticipates its primary revenue sources for the
next several years to include royalty payments, research grants and
collaboration payments from collaborators under arrangements entered into in the
future. The timing and amounts of such revenues, if any, will likely fluctuate
and depend upon the achievement of specified milestones, and results of
operations for any period may be unrelated to the results of operations for any
other period.

RESULTS OF OPERATIONS

Three and Nine Months Ended September 30, 1999 and September 30, 1998

               Revenues increased approximately 33% from approximately
$1,343,000 for the three months ended September 30, 1998 ("1998 Three Months")
to approximately $1,786,000 for the three months ended September 30, 1999 ("1999
Three Months"). For the nine months ended September 30, 1999 ("1999 Nine
Months"), revenues were approximately $4,559,000 as compared to $3,664,000 for
the nine months ended September 30, 1998 ("1998 Nine Months"), a 24% increase.
These increases are primarily due to royalty income received from Celgene on the
sale of thalidomide. In addition, in August 1999 EntreMed recognized the balance
of BMS collaborative research and development fees, license fees and related
deferred revenue due to the modification of the research agreement whereby the
Company assumed all responsibility for preclinical and clinical work on the
Angiostatin(R) protein. Deferred revenue from the collaborative research and
development fees related to the amortization over five years of a one-time
payment of $2,500,000 from Bristol-Myers Squibb Company ("BMS") received in
December 1995 and the amortization of semi-annual payments of $1,835,000 under
the BMS Collaboration agreement, both fully amortized in August 1999. The
license fee represented the amortization over five years of a one-time
$1,000,000 license fee received in December 1995 under the BMS Collaboration
agreement also fully amortized in August 1999.

               Research and development expenses increased by approximately 55%
from approximately $4,481,000 in the 1998 Three Months to approximately
$6,960,000 in the 1999 Three Months and by approximately 110% from approximately
$10,326,000 in the 1998 Nine Months to approximately $21,686,000 in the 1999
Nine Months. Research and development expenditures include sponsored research
payments to academic collaborators, including payments to Children's Hospital of
$1,700,000 in 1999 and $2,000,000 in 1998 and expenses related to the Company's
internal research programs. The increase in research and development costs
reflects increased efforts in the Company's internal and sponsored research and
product development programs related to its antiangiogenesis technologies.
Overall, research personnel increased from 42 as of September 30, 1998 to 52 as
of September 30, 1999. Research and development expenses are expected to
continue to increase as the Company continues to expand its research and
development efforts.

                                       7
<PAGE>   8

               General and administrative expenses increased approximately 61%
from approximately $1,380,000 in the 1998 Three Months to approximately
$2,224,000 in the 1999 Three Months. For the 1999 Nine Months, general and
administration expenses were approximately $6,123,000 as compared to
approximately $3,907,000 for the 1998 Nine Months, a 57% increase. The overall
increase in general and administrative expenses during the 1999 periods compared
to comparable periods of 1998 resulted primarily from the increase in
administrative costs associated with adding administrative staff to support the
Company's research efforts and external collaborations the Company is
conducting, investigating potential strategic relationships, and obtaining
professional services. Investment income decreased approximately 10% from
approximately $559,000 in the 1998 Three Months to approximately $501,000 in the
1999 Three Months and decreased approximately 29% from approximately $1,686,000
in the 1998 Nine Months to approximately $1,197,000 in the 1999 Nine Months.
This overall decrease in investment income during the 1999 periods compared to
comparable periods of 1998 is due to the reduction of the Company's cash and
short-term investments as such working capital components are used to fund the
Company's operations.

LIQUIDITY AND CAPITAL RESOURCES

               At September 30, 1999, the Company had cash and cash equivalents
of approximately $39,899,000 with working capital of approximately $35,477,000,
primarily representing the net proceeds of the Company's private placements of
equity securities and its initial public offering, payments from BMS which
include equity investments, royalties received from Celgene and various grants.

                On July 27, 1999, the Company completed an offering of 1,478,118
shares of its common stock, par value $.01 per share, Series 1 Warrants to
purchase a total of 739,059 shares of Common Stock at an exercise price of
$33.02 and Series 2 Warrants to purchase a total of 739,059 shares of Common
Stock at an exercise price of $25.45. The offering resulted in gross proceeds to
the Company, prior to the deduction of fees and commissions, of approximately
$30.1 million. The net proceeds from the offering will be used by the Company
for continued clinical development of the Company's products, working capital
and general corporate purposes, at the discretion of the Company's management.

               The Company's cash resources have been used to finance research
and development, including sponsored research, capital expenditures, including
leasehold improvements to the Company's new facility, and general and
administrative expenses. Over the next several years, the Company expects to
incur substantial additional research and development costs, including costs
related to early-stage research, preclinical and clinical trials, increased
administrative expenses to support its research and development operations and
increased capital expenditures for expanded research capacity, various equipment
needs and facility improvements.




                                       8
<PAGE>   9




               The Company is a party to sponsored research agreements requiring
the Company to fund an aggregate of approximately $3,832,000 through 2001
(including $2,900,000 to Children's Hospital), materials production costs of up
to $9,000,000 for clinical trials, and license agreements requiring future
milestone payments of up to $3,635,000 and additional payments upon attainment
of regulatory milestones.

            On February 9, 1999, the original BMS Collaboration was modified
such that the final payment of $611,667 under the agreement was paid on June 5,
1999. As amended, BMS has no further funding obligation to the Company after
August 9, 1999.


YEAR 2000 COMPLIANCE

               The Year 2000 Issue is the result of computer programs being
written using two digits rather than four to define the applicable year. As a
result, those computer programs having time-sensitive software would recognize a
date using "00" as the year 1900 rather than the year 2000.

               The Company has queried its significant supplier that does not
share information systems with the Company (external agent). To date, the
Company is not aware of any external agent with a Year 2000 issue that would
materially impact the Company's results of operations, liquidity, or capital
resources. However, the Company has no means of ensuring that external agents
will be Year 2000 ready. The inability of external agents to complete the Year
2000 resolution process in a timely fashion could materially impact the Company.
The effect of non-compliance by external agents is not determinable.

               The Company anticipates no other Year 2000 problems that are
reasonably likely to have a material adverse effect on the Company's operations.
There can be no assurance, however, that such problems will not arise.

               To date, the Company has not incurred significant costs in
connection with the implementation of its Year 2000 Plan and does not expect
future costs to be significant.

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

               Statements herein that are not descriptions of historical facts
are forward-looking and subject to risk and uncertainties. Actual results could
differ materially from those currently anticipated due to a number of factors,
including those set forth in the Company's Securities and Exchange Commission
filings under "Risk Factors", including risks relating to the early stage of
products under development; uncertainties relating to clinical trials'
dependence on third parties' future capital needs; and risks relating to the
commercialization, if any, of the Company's proposed products (such as
marketing, safety, regulatory, patent, product liability, supply, competition
and other risks).




                                       9
<PAGE>   10



PART II.       OTHER INFORMATION

Item 1.        LEGAL PROCEEDINGS

               This information as set forth in Note 2 of "Notes to Consolidated
               Financial Statements" appearing in Item 1 of Part I of this
               report is incorporated herein by reference.

Item 2.        CHANGES IN SECURITIES

               On July 27, 1999, the Company completed a private placement of
               1,478,118 shares of its Common Stock, par value $.01 per share,
               Series 1 Warrants to purchase a total of 739,059 shares of Common
               Stock at an exercise price of $33.02 and Series 2 Warrants to
               purchase a total of 739,059 shares of Common Stock at an exercise
               price of $25.45, with purchasers qualifying as "accredited
               investors" under Rule 501(a) of Regulation D. The private
               placement resulted in gross proceeds to the Company, prior to the
               deduction of fees and commissions, of approximately $30.1
               million. The net proceeds from the placement will be used by the
               Company for continued clinical development of the Company's
               products, working capital and general corporate purposes, at the
               discretion of the Company's management. The offering was exempt
               from registration under the Securities Act of 1933, as amended,
               pursuant to the exemption set forth in Section 4(2) and
               Regulation D promulgated thereunder, as the securities were
               issued in private placements with accredited investors and did
               not involve any public offering.


Item 3.        DEFAULT UPON SENIOR SECURITIES

               Not applicable.

Item 4.        SUBMISSION OF MATTERS TO VOTE OF SECURITY HOLDERS

               Not applicable.

Item 5.        OTHER INFORMATION

               Not applicable.




                                       10
<PAGE>   11




Item 6.        EXHIBITS AND REPORTS ON FORM 8-K

               (a)     The following exhibits are filed with this report:

               4.1*           Form of Series 1 Warrant

               4.2*           Form of Series 2 Warrant

               10.34+         Bioprocessing Services Agreement between Covance
                              Biotechnology Services, Inc. and EntreMed, Inc,
                              signed July 7, 1999 regarding
                              Angiostatin(R) protein

               10.35+         Letter of Intent between Covance Biotechnology
                              Services, Inc. and EntreMed, Inc, dated August 30,
                              1999 regarding Endostatin(TM) protein

               10.36*         Form of Securities Purchase Agreement, dated as of
                              July 22, 1999, by and among EntreMed, Inc. and the
                              purchasers in the offering

               10.37*         Form of Registration Rights Agreement, dated as of
                              July 27, 1999, by and among EntreMed, Inc. and the
                              purchasers in the offering

               27.1           Financial Data Schedule

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

*              Incorporated by reference to the Company's current report on Form
               8-K dated July 27, 1999 previously filed with the Securities and
               Exchange Commission.

+              Portions of this Exhibit have been omitted pursuant to a
               Confidential Treatment Request, which the Company has filed
               separately with the Securities and Exchange Commission.

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


               (b)   A current report on Form 8-K dated July 27, 1999 was filed
                     on August 10, 1999 under Item 5 thereto reporting that the
                     Company completed an offering of 1,478,118 shares of its
                     common stock, par value $.01 per share, Series 1 Warrants
                     to purchase a total of 739,059 shares of common stock and
                     Series 2 Warrants to purchase 739,059 shares of common
                     stock.




                                       11
<PAGE>   12


                                   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.



                                                       ENTREMED, INC.
                                                        (Registrant)


Date:  November 12, 1999                      /s/ John W. Holaday, Ph.D.
                                           -------------------------------
                                                  John W. Holaday, Ph.D.
                                          President and Chief Executive Officer




Date:  November 12, 1999                      /s/ R. Nelson Campbell
                                           -------------------------------
                                                R. Nelson Campbell
                                               Chief Financial Officer






                                       12

<PAGE>   1
                                                                   EXHIBIT 10.34

            [ "..." indicates material has been omitted pursuant to a
     Confidential Treatment Request, which the Company has filed separately
                  with the Securities and Exchange Commission]

                                                      EntreMed-Covance Agreement

                       BIOPROCESSING SERVICES AGREEMENT

This manufacturing services agreement dated this 7th day of July 1999 (the
"Agreement") between EntreMed, Inc. a Delaware corporation ("Sponsor") having
its principal place of business at 9640 Medical Center Drive, Rockville, MD
20850 and Covance Biotechnology Services Inc., a Delaware Corporation ("CBSI"),
having its principal place of business at 6051 George Watts Hill Drive, P. O.
Box 13865, Research Triangle Park, NC 27709-3865.

WITNESSETH
WHEREAS, CBSI provides a full range of bioprocessing services to the
biopharmaceutical industry, including process development, fermentation, cell
culture, separation/purification, bioanalytical chemistry, quality control,
quality assurance, and regulatory affairs.

WHEREAS, sponsor desires CBSI to perform services in accordance with the terms
of this Agreement and the Scope of Work (as hereinafter defined) related to the
production of the material known as Angiostatin(TM) (the "Product") and CBSI
desires to perform such services.

NOW, THEREFORE, in consideration of the above statements and other good and
valuable consideration, the sufficiency and receipt of which are hereby
acknowledged, the parties hereto agree as follows:


Section 1.
SCOPE OF WORK
a)    A detailed Scope of Work document ("Scope") to be provided by Sponsor or
      prepared by CBSI under Sponsor's direction and approved by Sponsor will be
      attached to this agreement as Appendix 1. CBSI will perform the service or
      services ("Program") for Sponsor in accordance with the Scope. The Scope
      will specify the program design, information desired, estimated duration
      of the Program, and all other matters pertinent to completion of the
      Program, and will be deemed a part of this Agreement and is incorporated
      herein by reference.

b)    CBSI will, at Sponsor's request, consult with Sponsor in developing the
      Program design in a manner consistent with current regulatory guidelines.
      However, CBSI does not warrant that the Product will be safe or
      efficacious or that the CMC section prepared as result of performing the
      Program will satisfy all the requirements of any regulatory agencies at
      the time of submission.

c)    CBSI's performance of the work will be based on technical information
      provided by or for the Sponsor. This information will be translated into
      development and/or manufacturing documents (development plans, batch
      records, specifications, etc.) which will be reviewed and approved by the
      Sponsor. These documents will form the basis upon which the work will be
      performed.


07/07/99                                                          Page 1 of 11
<PAGE>   2
            [ "..." indicates material has been omitted pursuant to a
     Confidential Treatment Request, which the Company has filed separately
                  with the Securities and Exchange Commission]

                                                      EntreMed-Covance Agreement


Section 2.
PROGRAM PERFORMANCE
CBSI shall use commercially reasonable efforts to provide facilities, supplies,
and staff necessary to complete the Program as provided in the Scope, as it may
be modified as provided herein, and in accordance with the terms of this
Agreement. In the event of any conflict between the Scope/Program and this
Agreement, the terms of this Agreement shall control.

CBSI will appoint a CBSI representative (the "Program Manager") to be
responsible for the completion of the Program by CBSI. The Program Manager will
coordinate performance of the Program with a representative designated by
Sponsor (the "Sponsor Representative"), which representative shall have
responsibility over all matters relating to performance of the Program on behalf
of Sponsor. Unless otherwise agreed in the Scope, all communications between
CBSI and the Sponsor regarding the conduct of the Program pursuant to the Scope
shall be addressed to or routed through the Program Manager and Sponsor
Representative, directly. CBSI may, at its option, substitute the Program
Manager during the course of the program.

Section 3.
PROGRAM MATERIALS
a)    Sponsor will provide CBSI with sufficient amounts of raw materials or
      other substances with which to perform the Program as specified in the
      Scope, (the "Materials"), as well as all documentation and such other data
      as may be available to apprise CBSI of the stability of the Materials,
      process characteristics, proper storage, manufacturing and safety
      requirements. Sponsor will also provide CBSI with all necessary
      information to effect the reliable transfer of the process from the
      Sponsor to CBSI.

b)    Upon completion of the Program, any remaining samples of the Materials or
      other substances provided to CBSI will be returned to Sponsor, at
      Sponsor's option and/or retained by CBSI in compliance with regulatory
      requirements.

Section 4.
COMPLIANCE WITH GOVERNMENT REGULATIONS
a)    CBSI will perform the Program in accordance with the Scope, and the
      current state of the Food and Drug Administration's current Good
      Manufacturing Practices (cGMP's) when appropriate to do so. Subject to
      paragraph b. of Section 4 below, CBSI will also comply in all material
      respects with all applicable government regulatory requirements concerning
      current Good Manufacturing Practices appropriate to the Program.

b)    Should such government regulatory requirements be changed, CBSI will make
      every reasonable effort to satisfy the new requirements. In the event that
      compliance with such new regulatory requirements necessitates a change in
      the Scope for the Program, CBSI


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      will submit to Sponsor a revised technical and cost proposal for Sponsor's
      acceptance prior to making any changes in the Scope or the Program.

c)    In the event of a conflict in government regulations, Sponsor will
      designate, in writing, which regulations shall be followed by CBSI in its
      performance of the Program.

Section 5.
FACILITY VISITS
Sponsor's representatives may visit CBSI's facility at appropriate times
consistent with the Program to observe the progress of the Program. CBSI will
assist Sponsor in scheduling such visits which will be in compliance with
requirement to protect confidentiality of other clients.

Section 6.
COMPENSATION
a)    The estimated budget for the Program is as provided in the Scope (Appendix
      1). Such budget is subject to adjustment if (1) Sponsor executes this
      Agreement later than 30 days after the date CBSI has executed this
      Agreement and (2) the Materials or other data or information required to
      conduct the Program is supplied or provided more than 30 days after the
      date CBSI has executed this Agreement.

b)    Sponsor shall make payments as defined in the Payment Schedule included in
      Appendix 1. A "..." fee equal to "..." will be added to "...". The "..."
      fee will be waived on "...". "..." charges, such as for "...", will be
      invoiced "...". Payments are due 30 days from the date of invoice. Late
      payments are subject to an interest charge of "...". Any payments that are
      greater than 90 days past due constitute a breach of this Agreement unless
      there is a dispute relative to such payments which has not yet been
      resolved pursuant to Section 14.

c)    In the event that "...", "..." shall "..." for "..." at the rate of "...".

Section 7.
CHANGE ORDERS
a)    The estimated budget for the Program specified in Section 6 of this
      Agreement and the individual budget components and time estimates
      specified in the Scope are subject to a number of general and program
      specific assumptions. The program specific assumptions relate to
      the Program design and objectives, manpower requirements, timing, capital
      expenditure requirements, if any, and other matters relating to the
      completion of the Program as set forth in the Scope (the "Program
      Assumptions"). CBSI also assumes that the Sponsor will cooperate and
      perform its obligations under the Agreement and Scope in a timely manner,
      that no event outside the control of CBSI will occur, including, without
      limitation, the events described in Section 17, and that there are no
      material changes to any applicable laws, rules or regulations which effect
      the Program (the foregoing assumptions together with the Program
      Assumptions, collectively, the "Assumptions")


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      In the event that any of the Assumptions require modification or the
      Program objectives cannot be achieved based on the Assumptions (each
      being, a "Modification") then the Scope may be amended as provided in
      paragraph b) of this Section 7.

b)    In the event a Modification is identified by the Sponsor or by CBSI, the
      identifying party shall notify the other party as soon as is reasonably
      possible. CBSI shall provide Sponsor with a Change Order containing an
      estimate of the required Modifications to the Program budget and timeline
      specified in the Scope within 20 business days of receiving such notice.
      Sponsor shall use best efforts to respond in writing to such Change Order
      promptly. If Sponsor does not approve such Change Order and has not
      terminated the Program but wants the Program to be modified to take into
      account the Modification, then Sponsor and CBSI shall use best efforts to
      agree on a Change Order that is mutually acceptable. If practicable, CBSI
      shall continue work on the Program during any such negotiations, but shall
      not commence work with respect to the Change Order unless authorized in
      writing.

Section 8.
CONFIDENTIAL INFORMATION/LEGAL PROCEEDINGS
a)    CBSI will not disclose, without Sponsor's written permission, any
      information pertaining to Sponsor's Program unless such disclosure: 1) is
      to an affiliate of CBSI who is under a similar obligation to keep such
      information confidential; 2) is or becomes publicly available through no
      fault of CBSI; 3) is disclosed by a third party entitled to disclose it;
      4) is already known to CBSI as shown by its prior written records; or 5)
      is required by any law, rule, regulation, order decision, decree, subpoena
      or other legal process to be disclosed. If such disclosure is requested by
      legal process, CBSI will make all reasonable efforts to notify Sponsor of
      this request promptly prior to any disclosure to permit Sponsor to oppose
      such disclosure by appropriate legal action.

b)    CBSI will not transfer any materials without Sponsor's written permission
      to any third party unless such transfer is to an affiliate bound by the
      terms herein and is consistent with the Program.

c)    If CBSI shall be obliged to provide testimony or records regarding any
      Sponsor Program in any legal or administrative proceeding, then Sponsor
      shall reimburse CBSI its out-of-pocket costs therefore plus an hourly fee
      for its employees or representatives equal to the internal fully burdened
      costs to CBSI of such employee or representative.

Section 9.
WORK PRODUCT
a)    All work outputs (e.g. reports) will be prepared on CBSI's standard format
      unless otherwise specified in the Scope.

b)    Sponsor will have title to all Materials, raw data, documentation,
      records, protocols, specimens and other reports generated as a result of
      this Program. All such written


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      materials will be archived by CBSI for a period of five years following
      completion of the Program unless otherwise defined by the Program or
      required by applicable laws or regulations. Five years after completion of
      the Program, all of the aforementioned materials will be sent to the
      Sponsor and a reasonable return fee will be charged. The Sponsor may elect
      to have the materials retained in the CBSI Archives for an additional
      period of time at a reasonable additional cost. If the Sponsor chooses to
      have CBSI dispose of the materials, a reasonable disposal fee will be
      charged. CBSI will continue to retain such documentation and materials as
      required by regulations and as may be required by law, pertaining to such
      activities as well as for archival purposes.

Section 10.
INVENTIONS, PATENTS, AND RESULTS OF THE PROGRAM

Any product or product improvement inventions or discoveries, including new uses
for product and related patent rights which arise as a result of the work
performed by CBSI will be owned by and assigned to Sponsor and CBSI will
cooperate with Sponsor in perfecting Sponsor's interest in such intellectual
property. Any process or process improvement inventions or discoveries made
solely by CBSI which arise as a result of the work performed by CBSI and related
patent rights will be owned by CBSI. Any such process or process improvement
inventions or discoveries and related patent rights which are made jointly by
the parties shall be owned jointly by the parties. With respect to any invention
or discovery not owned by Sponsor as set forth above, CBSI hereby grants to
Sponsor an exclusive, royalty-free, paid up, perpetual, worldwide, sublicensable
license in the field of Anti-Angiogenesis under CBSI's sole and joint inventions
and related patent rights arising as a result of the work performed by CBSI
hereunder in order to make, have made, use, import, sell or offer to sell
Product.


Section 11.
INDEPENDENT CONTRACTOR
CBSI shall perform the Program as an independent contractor of Sponsor and shall
have complete and exclusive control over its facilities, equipment, employees
and agents. Nothing in this agreement or other arrangements for which it is made
shall constitute CBSI, or anyone furnished or used by CBSI in the performance of
the services, as employee, joint venture, partner, or servant of Sponsor.

Section 12.
INSURANCE
CBSI shall secure and maintain in full force and effect throughout the
performance of the Program policies of insurance for (a) Workmen's Compensation,
(b) General Liability, (c) Automobile Liability, and (d) Professional Liability
having policy limits, deductibles and other terms appropriate to the conduct of
CBSI's business in CBSI's sole and exclusive judgment. Certificates evidencing
such insurance will be made available for examination upon request of the
Sponsor.



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Section 13.
DEFAULT
a)    If CBSI is in default of its material obligations under this Agreement,
      then Sponsor shall promptly notify CBSI in writing of any such default.
      CBSI shall have a period of 45 days from the date of receipt of such
      notice within which to cure such default; provided that if such default
      renders the Program invalid, then CBSI, shall, at Sponsor's option, either
      (1) repeat the Program at its cost within a time period mutually agreed to
      by it and Sponsor or (2) refund the contract price paid by Sponsor. If
      CBSI shall fail to cure such default within the specified cure period or
      repeat the Program, as the case may be, then this Agreement shall, at
      Sponsor's option, immediately terminate. In the event of such termination,
      Sponsor's sole remedy shall be, in the case where such default has not
      rendered the Program invalid, a reduction in the total contract price for
      the Program in an amount equal to the difference between (1) the total
      contract price for the Program and (2) the value of the work properly
      performed, and, in the case where such default does render the Program
      invalid, a refund of the contract price; provided however that under no
      circumstance shall CBSI be liable to Sponsor in an amount that, in
      aggregate exceeds, the contract price paid for such Program. In the event
      that any said default is directly attributable to the grossly negligent
      acts or omissions of CBSI, the limitation of remedies set forth in this
      section 13 (a) shall not apply.

b)    If Sponsor is in default of its material obligations under this Agreement,
      CBSI shall promptly notify Sponsor in writing of any such default. Sponsor
      shall have a period of 45 days from the date of receipt of such notice
      within which to cure such default; provided that if Sponsor fails to cure
      such breach within the specified cure period, this Agreement shall, at
      CBSI's option, immediately terminate.

c)    Not withstanding anything herein to the contrary, UNDER NO CIRCUMSTANCES
      SHALL EITHER PARTY BE ENTITLED TO INCIDENTAL, INDIRECT, CONSEQUENTIAL OR
      SPECIAL DAMAGES ARISING IN CONNECTION WITH THE DEFAULT OR BREACH OF ANY
      OBLIGATION OF THE OTHER PARTY UNDER THIS AGREEMENT, THE SCOPE OR ANY
      DOCUMENTS OR APPENDICES RELATED THERETO.

Section 14.
DISPUTE RESOLUTION
a)    In the event any dispute shall arise between the Sponsor and CBSI with
      respect to any of the terms and conditions of this Agreement or the
      Protocol; then senior executives of the Sponsor and CBSI shall meet as
      promptly as practicable after notice of such dispute to resolve in good
      faith such dispute.


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b)    If the Sponsor and CBSI are unable to satisfactorily resolve the dispute,
      then such dispute shall be finally settled by an arbitrator in accordance
      with this Section 14. The arbitration will be held in or around Raleigh,
      North Carolina, and except as noted below, shall be conducted in
      accordance with the rules of the American Arbitration Association by two
      arbitrators appointed, one by each party. If the arbitrators appointed
      cannot agree on the resolution of the dispute within sixty (60) days after
      the dispute is submitted to them, they shall thereupon appoint a third
      arbitrator, and if they fail to agree upon a third arbitrator within 30
      days after a deadlock is declared by either arbitrator, a third arbitrator
      will be appointed by the American Arbitration Association upon the request
      of either arbitrator. The arbitrators shall have no authority to award
      consequential, punitive or exemplary damages or to vary from or ignore the
      terms of this Agreement and shall be bound by controlling law. Finally,
      the parties may seek judicial intervention for emergency relief, such as
      restraining orders and injunctions where appropriate.

      Any decision by the third arbitrator and either one of the other
      arbitrators shall be binding upon the parties and may be entered as final
      judgment in any court having jurisdiction. The cost of any arbitration
      proceeding shall be borne by the parties as the arbitrators shall
      determine if the parties have not otherwise agreed. The arbitrators shall
      render their final decision in writing to the parties.

Section 15.
INDEMNIFICATION

a)    CBSI shall indemnify Sponsor and its affiliates and their respective
      officers, directors and employees from any loss, cost, damage or expense
      (a "Loss") from any lawsuit, action, claim, demand, assessment or
      proceeding (a "Claim") for personal injury to Program participants or
      personal injury to any employee of Sponsor or property damage arising or
      occurring during the conduct of the Program as a result of (i) CBSI's
      negligence, gross negligence or intentional misconduct or inaction, or
      (ii) CBSI's violation, non-compliance or non-performance of any terms of
      this Agreement; provided that if such Loss or Claim arises in whole or in
      part from Sponsor's negligence, gross negligence or intentional misconduct
      or inaction, then the amount of the Loss that CBSI shall indemnify Sponsor
      for pursuant to this Section 15 shall be reduced by an amount in
      proportion to the percentage of Sponsor's responsibilities for such Loss
      determined by a court of competent jurisdiction in a final and
      non-appealable decision or in a binding settlement between the parties.

b)    Sponsor shall indemnify CBSI and its affiliates and their respective
      officers, directors, employees and agents (the "CBSI Group") from any
      Claim or Loss arising from or related to (i) personal injury to a
      participant in the Program or personal injury to any employee of the CBSI
      Group directly or indirectly caused by the raw material, Product,
      intermediates or the Program, (ii) CBSI's performance of or involvement
      with the raw material, the Product or its obligations under this Agreement
      or the Scope related thereto,


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      (iii) CBSI's performance of the Program violating or infringing on the
      patents, trademarks, tradenames, servicemarks or copyrights of any third
      party with respect to Product and the process to manufacture Product,
      Product intermediates, or raw materials relating to Product, (iv) the
      harmful or otherwise unsafe effect of the raw materials or Product,
      including, without limitation, a Claim based upon Sponsor or any other
      person's use, consumption, sale, distribution or marketing of any
      substance, including the raw material or the Product, (v) the negligence,
      gross negligence or intentional misconduct or inaction of Sponsor in the
      performance of its obligations under this Agreement or Scope related to
      the Program, or (vi) the Sponsor's violation, non-compliance or
      non-performance of any of the terms of this Agreement; provided that if
      such Loss or Claim (other than a Loss or Claim described in clause (iv)
      hereof) arises in whole or in part from CBSI's negligence, gross
      negligence or intentional misconduct or inaction, then the amount of such
      Loss that Sponsor shall indemnify the CBSI Group for pursuant to this
      Section 15 shall be reduced by an amount in proportion to the percentage
      of CBSI's responsibilities for such Loss as determined by a court of
      competent jurisdiction in a final and non-appealable decision or in a
      binding settlement between the parties. Sponsor shall not indemnify the
      CBSI Group from any Loss from any claim described in clause (iv) hereof
      arising solely from the willful misconduct or inaction of CBSI.

c)    Upon receipt of notice of any Claim which may give rise to a right of
      indemnity from the other party hereto, the party seeking indemnification
      (the "Indemnified Party") shall give written notice thereof to the other
      party, (the "Indemnifying Party") with a Claim for indemnity. Such Claim
      for indemnity shall indicate the nature of the Claim and the basis
      therefore. Promptly after a claim is made for which the Indemnified Party
      seeks indemnity, the Indemnified Party shall permit the Indemnifying
      Party, at its option and expense, to assume the complete defense of such
      Claim, provided that (i) the Indemnified Party will have the right to
      participate in the defense of any such Claim at its own cost and expense,
      (ii) the Indemnifying Party will conduct the defense of any such Claim
      with due regard for the business interests and potential related
      liabilities of the Indemnified Party and (iii) the Indemnifying Party
      will, prior to making any settlement, consult with the Indemnified Party
      as to the terms of such settlement. The Indemnified Party shall have the
      right, at its election, to release and hold harmless the Indemnifying
      Party from its obligations hereunder with respect to such Claim and assume
      the complete defense of the same in return for payment by the Indemnifying
      Party to the Indemnified Party of the amount of the Indemnifying Party's
      settlement offer. The Indemnifying Party will not, in defense of any such
      Claim, except with the consent of the Indemnified Party, consent to the
      entry of any judgment or enter into any settlement which does not include,
      as an unconditional term thereof, the giving by the claimant or plaintiff
      to the Indemnified Party of a release from all liability in respect
      thereof. After notice to the Indemnified Party of the Indemnifying Party's
      election to assume the defense of such Claim, the Indemnifying Party shall
      be liable to the Indemnified Party for such legal or other reasonable
      expenses subsequently incurred by the Indemnified Party in connection with
      the defense thereof at the request of the Indemnifying Party. As to those
      Claims with respect to which the Indemnifying Party does not elect to
      assume control of the defense,



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      the Indemnified Party will afford the Indemnifying Party an opportunity to
      participate in such defense at the Indemnifying Party's own cost and
      expense, and will not settle or otherwise dispose of any of the same
      without the consent of the Indemnifying Party.

Section 16.
REPRESENTATION
Sponsor hereby represents and warrants to CBSI that it has legal title and/or a
valid license to the raw material, expression systems and process patents and
the Product and that, to the best of its knowledge, CBSI's performance of the
Program will not violate or infringe on the patents, trademarks, tradenames,
servicemarks or copyrights of any third party.

Section 17.
FORCE MAJEURE
Either party shall be excused from performing its respective obligations under
this Agreement if its performance is delayed or prevented by any event beyond
such party's reasonable control, including, but not limited to, acts of God,
fire, explosion, weather, disease, war, insurrection, civil strife, riots,
government action, or power failure, provided that such performance shall be
excused only to the extent of and during such disability. Any time specified for
completion of performance in the Scope falling due during or subsequent to the
occurrence of any or such events shall be automatically extended for a period of
time to recover from such disability. CBSI will promptly notify Sponsor if, by
reason of any of the events referred to herein, CBSI is unable to meet any such
time for performance specified in the Scope. If any part of the Program is
invalid as a result of such disability, CBSI will, upon written request from
Sponsor, but at Sponsor's sole cost and expense, repeat that part of the Program
affected by the disability. If CBSI is likely to be unable to perform for a
period in excess of 60 days then the parties agree to negotiate in good faith a
mutually satisfactory approach to resolve the delay resulting from this
paragraph. If the parties cannot reach a mutually satisfactory approach within
60 days, then Sponsor shall be entitled to terminate this Agreement without
payment of liquidated damages (Section 20).

Section 18.
ALLOCATION OF RESOURCES
If delays in the agreed commencement or performance of the Program occur because
of the Sponsor's inability to supply CBSI with agreed Materials or any
information required to begin or perform the Program within 30 days of such
agreed time, CBSI may reallocate resources being held for performance of the
Program without incurring liability to Sponsor.

Section 19.
USE OF NAMES
Neither party shall use the name of the other party or the names of the
employees of the other party in any advertising or sales promotional material or
in any publication without prior


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written permission of such party, except Sponsor may, as required by law or
regulatory requirements, disclose that CBSI has performed the Program.

Section 20.
TERMINATION BY SPONSOR
a)    Sponsor may at any time terminate the Program prior to completion by
      giving 45 days written notice to CBSI. In such event CBSI shall comply
      with such notice to terminate work on the Program and use its best efforts
      to reduce cost to Sponsor, and Sponsor shall pay CBSI upon receipt of
      CBSI's invoice all of its costs incurred or irrevocably obligated.

c)    The termination of this Agreement for any reason shall not relieve either
      party of its obligation to the other for obligations in respect of (i)
      confidentiality of information, (ii) consents for advertising purposes and
      publications, (iii) indemnification and, (iv) compensation for services
      performed.

Section 21.
ASSIGNMENT
This Agreement shall not be assigned in whole or in part by either party without
the prior written consent of the other, which consent shall not be unreasonably
withheld or delayed except Sponsor may assign without consent in the event of a
merger, acquisition, or transfer of all of its assets related to this Agreement.
Any attempt to assign this Agreement without such consent, where required, shall
be void and of no effect subject to the limitations on assignment herein. This
Agreement shall be binding upon and inure to the benefit of the successors and
assigns of the parties hereto.

Section 22.
NOTICE
All notices to be given as required in the Agreement shall be in writing and
shall be delivered personally, sent by telecopies, or mailed either by a
reputable overnight carrier or first class mail, postage prepaid to the parties
at the addresses set forth above or such other addresses as the parties may
designate in writing. Such notice shall be effective on the date sent, if
delivered personally or sent by telecopier, the date after delivery if sent by
overnight carrier and on the date received if mailed first class.

Section 23.
CHOICE OF LAW
This Agreement shall be construed and enforced in accordance with the laws of
the State of Delaware without regard to choice of law principles.

Section 24.
WAIVER/SEVERABILITY
No waiver of any provision of this Agreement, whether by conduct or otherwise,
in any one or more instances shall be deemed to be or be construed as a further
or continuing waiver of


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any such provision, or of any other provision or condition of this Agreement. If
any provisions hereof shall be determined to be invalid or unenforceable, the
validity and effect of the other provisions of this Agreement shall not be
effected thereby.

Section 25.
ENTIRE AGREEMENT;  MODIFICATION/COUNTERPARTS
This instrument, the Confidential Disclosure Agreement with an effective date of
31 March 1998, and the Scope set forth the entire Agreement between the parties
hereto with respect to the performance of the Program by CBSI for Sponsor and as
such, supersedes all prior and contemporaneous negotiations, agreements,
representations, understandings, and commitments with respect thereto and shall
take precedence over all terms, conditions and provisions on any purchase order
form or form of order acknowledgment or other document purporting to address the
same subject matter. This Agreement shall not be waived, released, discharged,
changed or modified in any manner except by an instrument signed by the duly
authorized officers of each of the partied hereto, which instrument shall make
specific reference to this Agreement and shall express the plan or intention to
modify same. This Agreement may be executed in one or more counterparts each of
which shall be deemed an original but all of which together shall constitute one
and the same instrument.

This Agreement becomes effective and binding on both parties on and as of the
last date that the parties hereto have executed this Agreement. Should terms
contained herein be at variance with the terms and conditions specified in
Sponsor's written acceptance, then the terms and conditions contained herein
take precedence.

<TABLE>
<S>                                             <C>
ENTREMED, INC.                                   COVANCE BIOTECHNOLOGY SERVICES INC.

By:         /s/  JOHN W. HOLADAY                 By:         /s/  JOHN R. BROWN
            -----------------------                          ----------------------------------

Name:       John W. Holaday                      Name:       John R. Brown
            -----------------------                          ----------------------------------

Title:      Chairman & CEO                       Title:      President & CEO
            -----------------------                          ----------------------------------

Date:       July 7, 1999                         Date:       July 7th, 1999
            -----------------------                          ----------------------------------
</TABLE>

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<PAGE>   12
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                  with the Securities and Exchange Commission]

                                   APPENDIX 1


                                SCOPE OF WORK FOR
                                 PRODUCTION OF
                               ANIMAL TOXICOLOGY
                                    AND cGMP
                                  ANGIOSTATIN




     PREPARED FOR:   ENTREMED, INC.
     PREPARED BY:    COVANCE BIOTECHNOLOGY SERVICES INC.
     DATED:          JULY 7, 1999




                                    1 of 27
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                                   APPENDIX 1



<TABLE>
<S>                                                                                                 <C>
TABLE OF CONTENTS


THE ANGIOSTATIN PROJECT AND OBJECTIVES                                                                  4
            Understanding of the Angiostatin Project                                                    4
            Objectives of the Angiostatin Program                                                       4
PROGRAM ASSUMPTIONS                                                                                     7
ANGIOSTATIN DEVELOPMENT ACTIVITIES                                                                      8
            Plan of Action                                                                              8
            Financial Summary                                                                          11
ANGIOSTATIN MANUFACTURING RELATED ACTIVITIES                                                           12
            Technology Transfer                                                                        12
            Cell Banking and Testing                                                                   13
            Pre-Production Activities                                                                  14
            Large Scale "..." Demonstration Runs                                                       15
            Assay Qualification                                                                        16
            cGMP Stability Studies                                                                     17
            Regulatory Support Services                                                                18
            Project Management                                                                         19
            Fill/Finish of Toxicology Material                                                         19
            Financial Summary for Fixed Price Components of Angiostatin
            Manufacturing-Related Activities                                                           21
</TABLE>



                                    2 of 27
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                                   APPENDIX 1


<TABLE>
<S>                                                                                                    <C>
ANGIOSTATIN LARGE SCALE PRODUCTION OF "..."                                                            22
            Toxicology Material Manufacturing                                                          22
            Clinical Trial Material Manufacturing                                                      24
            Quality Function                                                                           25
            Financial Summary for Angiostatin Manufacturing                                            26
ESTIMATED PAYMENT SCHEDULE                                                                             28
ACCEPTANCE SIGNATURE                                                                                   28

</TABLE>




                                    3 of 27
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                                   APPENDIX 1




THE ANGIOSTATIN PROJECT AND OBJECTIVES


            UNDERSTANDING OF THE ANGIOSTATIN PROJECT

                  -     The product is Angiostatin, a protein consisting of
                        "..."

                  -     molecule is expressed in "..."

                  -     production clone has been selected (Clone # "...")

                  -     cell lines have been received at CBSI and have been
                        released for evaluation

                  -     fermentation process is not established at the "..."
                        scale

                  -     recovery process is not established at the "..." scale

                  -     purification process is not established at the "..."
                        scale

                  -     analytical methods are not established at CBSI

                  -     stability data is not available

                  -     product specifications are not established

                  -     productivity is not established

                  -     "..." of Angiostatin are required for use in toxicology
                        studies

                  -     toxicology material will be vialed at CBSI

                  -     "..." of Angiostatin are required for use in clinical
                        trials

                  -     IND for Phase I clinical trials is targeted to be filed
                        "..."


            OBJECTIVES FOR THE ANGIOSTATIN PROGRAM

                  CBSI recognizes the following objectives for the Angiostatin
                  program and will make all reasonable efforts to meet the
                  EntreMed's timelines.

                  -     Provide process development services for fermentation,
                        purification, formulation and analytical protein
                        chemistry (reference pages 8-11).

                  -     Manufacture and vial "..." of Angiostatin for "..." by
                        "...".

                  -     Manufacture and vial "..." of Angiostatin for "..." by
                        "...".


                                    4 of 27
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                                   APPENDIX 1

               -     Manufacture "..." of "..." Angiostatin for "..." by
                     "...".

               -     Manufacture "..." of "..." Angiostatin for "..." by
                     "...".

               -     Support EntreMed's regulatory strategy by preparing a
                     draft CMC section for a Phase I IND filing. EntreMed's
                     targeted date for IND filing for Phase I clinical trials
                     is "...".


               Note: When manufacturing clinical material, CBSI will follow
               current Good Manufacturing Practices. CBSI will manufacture
               utilizing in process control tests to meet the specifications
               for purity, identity and safety. CBSI does not warrant that
               the material produced under cGMP will be biologically active.

               -----------------------------------------------------------------
               "...".
               -----------------------------------------------------------------


               For the Angiostatin program, CBSI will:

                  -     Attempt to reproduce and scale up fermentation, recovery
                        and purification processes to manufacture Angiostatin
                        based on information from EntreMed. Perform development
                        work as necessary

                  -     Transfer/Develop methodology and qualify assays for
                        in-process control (IPC), for release testing of
                        Angiostatin and for use in support of stability testing

                  -     Prepare "..."

                  -     Perform runs at the "..."(1) scale to determine
                        reproducibility, stability and robustness of the
                        developed fermentation, recovery and purification
                        processes

                  -     Perform runs at the "..."(2) scale to test scalability
                        of the process

                  -     Perform pre-production activities in preparation for
                        cGMP manufacturing including procurement, testing and
                        release of raw materials, preparation of cGMP
                        documentation, and equipment and facility set-up

                  -     Perform "..."at the "..."(3) scale and perform
                        subsequent recovery and purification to demonstrate
                        feasibility of the process at large scale

                  -     Perform toxicology lot production at the "..." scale and
                        subsequent purification to produce a total of "..." of
                        Angiostatin (number of runs to be determined)


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

                  (1) "..." working volume

                  (2) "..." working volume

                  (3) "..." working volume


                                    5 of 27
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                  with the Securities and Exchange Commission]

                                   APPENDIX 1

                  -     Perform sufficient number of clinical runs at the "..."
                        scale and perform subsequent recovery and purification
                        to obtain "..." of cGMP Angiostatin

                  -     Perform fill/finish activities for toxicology material

                  -     Perform Quality Control testing and Quality Assurance
                        activities in support of release of bulk-filled Phase I
                        Angiostatin

                  -     Provide manufacturing and QC/QA reports in support of
                        the CMC section of the Phase I IND filing for
                        Angiostatin targeted for "...".





                                    6 of 27
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                  with the Securities and Exchange Commission]

                                   APPENDIX 1



PROGRAM ASSUMPTIONS

Program assumptions are listed to provide a framework by which the Program may
proceed. If these assumptions prove to be incorrect, then alternative approaches
will need to be considered to achieve the stated deliverables.

1.    The Angiostatin process will require "..." for fermentation and "..." for
      recovery and purification (per "..." process).

2.    All technology transfer performs as represented by EntreMed.

3.    For Angiostatin, "..." will be sufficient to ensure process operation and
      reproducibility.

4.    Price and timelines assume "...".

5.    At large-scale, "...". Starting on "...".

6.    Angiostatin delivery dates are of critical importance to EntreMed. The
      program will be managed to maximize the likelihood of achieving
      Angiostatin delivery on or before the required dates. Process development
      activities will continue "..." to support large-scale manufacturing and to
      optimize/improve the manufacturing process prior to transfer of the
      process to manufacturing. Continuing process development will be in
      parallel with manufacturing; any improvements in the manufacturing process
      that are discovered by this parallel development work will be incorporated
      into the manufacturing process when practicable within the constraints of
      a cGMP environment.



                                    7 of 27
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                                   APPENDIX 1


ANGIOSTATIN DEVELOPMENT ACTIVITIES

            PLAN OF ACTION

            The objective of this activity is to develop a scaleable and cGMP
            compatible process that yields Angiostatin of appropriate quality
            for toxicology studies and clinical trials.

            -     Attempt to reproduce and scale up a fermentation process for
                  Angiostatin with reference to the existing CBSI process for
                  Endostatin. Perform additional development work as necessary.

            -     Attempt to reproduce and scale up a recovery process for
                  Angiostatin with reference to the existing CBSI process for
                  Endostatin. Perform additional development work as necessary.

            -     Attempt to reproduce and scale up a purification process for
                  Angiostatin with reference to the existing CBSI process for
                  Endostatin. Perform additional development work as necessary.

            -     Transfer/Develop methods to assess identity, purity,
                  concentration and product-related contaminants.

            CBSI will conduct appropriate Process Development efforts to specify
            both fermentation and purification yields and control production of
            the various species of Angiostatin.

            These process development efforts include some or all activities
            described on the following pages.



                                    8 of 27
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                                   APPENDIX 1




<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------------------------------
                         FERMENTATION PD ACTIVITY                  ESTIMATED        ESTIMATED         ESTIMATED
                                                                    NO. OF           NO. OF           FTE-WEEKS
                                                                   PERSONS            WEEKS
- -------------------------------------------------------------------------------------------------------------------------------
<S>                                                              <C>                 <C>               <C>
"..."                                                              "..."             "..."              "..."
- -------------------------------------------------------------------------------------------------------------------------------
"..."                                                              "..."             "..."              "..."
- -------------------------------------------------------------------------------------------------------------------------------
"..."                                                              "..."             "..."              "..."
- -------------------------------------------------------------------------------------------------------------------------------
TOTAL FTE-WEEKS NEEDED                                                                                  "..."
- -------------------------------------------------------------------------------------------------------------------------------
</TABLE>




                                    9 of 27
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                                   APPENDIX 1





<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------
PURIFICATION PD ACTIVITY                             ESTIMATED          ESTIMATED           ESTIMATED
                                                     NO. OF             NO. OF              TOTAL
                                                     PERSONS            WEEKS               FTE-WEEKS
- --------------------------------------------------------------------------------------------------------------
<S>                                               <C>                   <C>                 <C>
"..."                                                "..."              "..."               "..."
- --------------------------------------------------------------------------------------------------------------
"..."                                                "..."              "..."               "..."
- --------------------------------------------------------------------------------------------------------------
"..."                                                "..."              "..."               "..."
- --------------------------------------------------------------------------------------------------------------
"..."                                                "..."              "..."               "..."
- --------------------------------------------------------------------------------------------------------------
"..."                                                "..."              "..."               "..."
- --------------------------------------------------------------------------------------------------------------
"..."                                                "..."              "..."               "..."
- --------------------------------------------------------------------------------------------------------------
"..."                                                "..."              "..."               "..."
- --------------------------------------------------------------------------------------------------------------
TOTAL FTE-WEEKS NEEDED                                                                      "..."
- --------------------------------------------------------------------------------------------------------------
</TABLE>


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------
ANALYTICAL PD ACTIVITY                               ESTIMATED          ESTIMATED           ESTIMATED
                                                     NO. OF             NO. OF              TOTAL
                                                     PERSONS            WEEKS               FTE-WEEKS
- --------------------------------------------------------------------------------------------------------------
<S>                                               <C>                 <C>                 <C>
"..."                                                "..."              "..."               "..."
- --------------------------------------------------------------------------------------------------------------
"..."                                                "..."              "..."               "..."
- --------------------------------------------------------------------------------------------------------------
"..."                                                "..."              "..."               "..."
- --------------------------------------------------------------------------------------------------------------
TOTAL FTE-WEEKS NEEDED                                                                      "..."
- --------------------------------------------------------------------------------------------------------------
</TABLE>


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------
FORMULATION PD ACTIVITY                              ESTIMATED          ESTIMATED           ESTIMATED
                                                     NO. OF             NO. OF              TOTAL
                                                     PERSONS            WEEKS               FTE-WEEKS
- --------------------------------------------------------------------------------------------------------------
<S>                                               <C>                 <C>                 <C>
"..."                                                "..."              "..."               "..."
- --------------------------------------------------------------------------------------------------------------
"..."                                                "..."              "..."               "..."
- --------------------------------------------------------------------------------------------------------------
"..."                                                "..."              "..."               "..."
- --------------------------------------------------------------------------------------------------------------
TOTAL FTE-WEEKS NEEDED                                                                      "..."
- --------------------------------------------------------------------------------------------------------------
</TABLE>
     FINANCIAL SUMMARY

     -    "..."





                                    10 of 27
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     Confidential Treatment Request, which the Company has filed separately
                  with the Securities and Exchange Commission]

                                   APPENDIX 1


ANGIOSTATIN MANUFACTURING RELATED ACTIVITIES

            TECHNOLOGY TRANSFER

            The objective of this activity is to transfer from EntreMed to CBSI
            existing methodology and process information to obtain a complete
            understanding of the process as it currently exists.

                TECHNOLOGY TRANSFER includes the following activities:

                  -     EntreMed will transfer existing methods and technical
                        information from the "..." and "..." regarding the
                        fermentation and purification processes and analytical
                        techniques for quantifying Angiostatin

                  -     CBSI will verify raw materials and purchase long lead
                        time materials

                  -     CBSI will verify equipment requirements and purchase
                        long lead time items, if any

                  -     CBSI will identify any facility or equipment engineering
                        issues related to large-scale manufacture

                  -     CBSI will outline the manufacturing plan that includes
                        identifying technical issues with the facility,
                        scheduling of the facility, and development of detailed
                        timelines for specific production activities, including
                        changeover

            Price

             "..."



                                    11 of 27
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     Confidential Treatment Request, which the Company has filed separately
                  with the Securities and Exchange Commission]

                                   APPENDIX 1


CELL BANKING AND TESTING

The objective of this activity is to generate and test a cGMP Master Cell Bank
(MCB) from a research cell bank and generate and test a Manufacturer's Working
Cell Bank (MWCB) from the MCB.

a)    CBSI will receive vials of the "..." following confirmation of purity and
      non-host contamination by "...". "..." must be "..." prior to receipt of
      cells.

b)    CBSI will develop specifications for all raw materials based on
      information provided by EntreMed. CBSI will order and release raw
      materials according to CBSI Standard Operating Procedures.

c)    CBSI will generate batch records for the cell bank production activities.
      EntreMed will review and approve all batch records prior to cell bank
      production.

d)    CBSI will produce a "..." vial MCB and a "..." vial MWCB from a MCB vial.
      CBSI Quality Group will provide support for batch record review and
      approval, raw material release and environmental monitoring.

e)    CBSI will provide temporary storage for cell banks ("..." degreesC).
      Within "..." of completion of cell banking activities, at least "..." of
      the cell bank will be transferred for storage to a designated third party
      approved by EntreMed.

f)    CBSI will perform the following tests on samples from the MCB and MWCB.
      CBSI and EntreMed will agree to suitable acceptance criteria for these
      tests:
              -    "..." ("...")
              -    "..." ("...")
              -    "..." ("...")

g)    CBSI will submit samples of the MCB and MWCB to "..." to perform the
      following. CBSI and EntreMed will agree to suitable acceptance criteria
      for these tests:
              -    "..." ("...")
              -    "..." ("...")

h)    CBSI will provide EntreMed with copies of the completed and approved batch
      records. CBSI will retain the originals in its archives.

i)    "..." testing of the MCB and MWCB is not included in the scope of this
      proposal.

j)    EntreMed is responsible for ensuring that the cell line supplied is
      suitable for the intended use.

Price
 "..."

            PRE-PRODUCTION ACTIVITIES

                                    12 of 27
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                                   APPENDIX 1



            The objective of this activity is for CBSI to perform the following
            activities in preparation for cGMP manufacturing:

                  -     Develop and finalize process flow diagrams

                  -     Complete engineering for processes

                  -     Prepare specifications

                  -     Test and release all raw materials

                  -     Procure and release all necessary supplies

                  -     Complete and qualify any necessary equipment
                        modifications

                  -     Prepare a detailed list of specifications, test methods,
                        SOPs, protocols and manufacturing procedures

                  -     Develop manufacturing procedures for implementation into
                        the CBSI Batch Record/Manufacturing Execution System

                  -     Set up to perform small scale runs, large scale
                        demonstration runs, toxicology runs and large scale cGMP
                        runs

            Price

            "..."(4)

            "..."





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

            (4) "..."



                                    13 of 27
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                                   APPENDIX 1


            LARGE SCALE "..." DEMONSTRATION RUNS

                  -     "..." demonstration runs and subsequent purification
                        will be performed according to the procedures developed
                        including any change in methods determined to be useful
                        following "..." runs.

                  -     Additional "..." demonstration runs may be needed if
                        unforeseen scale-up issues arise ("...").

                  -     Records for this stage of the process will be maintained
                        using DRAFT cGMP documents (batch records and
                        formulation records).

                  -     Analytical assays will be preformed to verify product
                        identity and quality on material from these
                        demonstration runs using appropriate assays.

                  -     Specific goals for yield and purity will be mutually
                        agreed upon between EntreMed and CBSI based on early
                        development results, clinical needs and project
                        timelines.

                  The "..." scale activities will be performed in CBSI's large
                  scale manufacturing area. Each manufacturing run is expected
                  to require one week in the large-scale fermentation area and
                  one-week in the large scale purification area. Any material
                  produced during demonstration runs can be used for
                  formulation, stability and other non-clinical activities.

                  Price

                   "..."

            IT IS ASSUMED THAT "..." DEMONSTRATION RUNS WILL BE SUFFICIENT TO
            ENSURE PROCESS OPERATION AND REPRODUCIBILITY.

            MILESTONE: AFTER COMPLETION OF DEMONSTRATION RUNS, CBSI AND ENTREMED
            WILL DETERMINE THAT USEABLE ANGIOSTATIN CAN BE PRODUCED AT LARGE
            SCALE BASED ON THE REVIEW OF DATA.

            IF THE MILESTONE IS NOT ACHIEVED AFTER "..." DEMONSTRATION RUNS, THE
            PARTIES AGREE TO MODIFY THE SCOPE TO ACCOMMODATE ADDITIONAL
            DEVELOPMENT WORK AND DEMONSTRATION RUNS TO ACHIEVE THE MILESTONE.
            THE COST FOR THE ADDITIONAL DEMONSTRATION RUNS IS "...".




                                    14 of 27
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                  with the Securities and Exchange Commission]

                                   APPENDIX 1



            ASSAY QUALIFICATION

            The objective of this activity is to perform qualification of assays
            to assess the performance capability of the assays used in support
            of cGMP manufacturing and stability studies.

            EntreMed and CBSI will jointly determine the specific assays to be
            used for in-process control and Angiostatin release testing. The
            types of assays listed below will assess the identity, purity,
            strength and homogeneity of Angiostatin. The specific testing
            regimen will depend on the inherent properties of Angiostatin.

            This table lists the assays that may be employed for
            characterization, in-process control and release testing of
            Angiostatin.

<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------
                 METHOD                                     COST FOR QUALIFICATION
- -----------------------------------------------------------------------------------------
<S>                                                         <C>
                  "..."                                             "..."
- -----------------------------------------------------------------------------------------
                  "..."                                             "..."
- -----------------------------------------------------------------------------------------
                  "..."                                             "..."
- -----------------------------------------------------------------------------------------
                  "..."                                             "..."
- -----------------------------------------------------------------------------------------
                  "..."                                             "..."
- -----------------------------------------------------------------------------------------
                  "..."                                             "..."
- -----------------------------------------------------------------------------------------
                  "..."                                             "..."
- -----------------------------------------------------------------------------------------
                  "..."                                             "..."
- -----------------------------------------------------------------------------------------
                  "..."                                             "..."
- -----------------------------------------------------------------------------------------
                  "..."                                             "..."
- -----------------------------------------------------------------------------------------
                  "..."                                             "..."
- -----------------------------------------------------------------------------------------
</TABLE>


            Price

            "..."

            "..."





                                    15 of 27
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                                   APPENDIX 1



            cGMP STABILITY STUDIES

            The objective of this activity is to perform studies on clinical
            material produced in cGMP runs. Activities include:

            -     Evaluate final product configuration for stability in real
                  time conditions at anticipated storage temperatures

            -     Perform studies that at least cover the duration of the
                  clinical trial


            The following table/schedule illustrates a clinical trial lasting
            "..." with expected storage at "...":

<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------
                 T=0        T=1m            T=2m           T=3m           T=6m           T=9m
- -------------------------------------------------------------------------------------------------------
<S>             <C>         <C>             <C>            <C>            <C>            <C>
"..." degrees C  "..."      "..."           "..."          "..."          "..."          "..."
- -------------------------------------------------------------------------------------------------------
"..." degrees C  "..."      "..."           "..."          "..."          "..."          "..."
- -------------------------------------------------------------------------------------------------------
</TABLE>


            CBSI will prepare a report describing the stability data for
            Angiostatin.

            The duration of cGMP stability studies depends on study design and
            duration of clinical trial.

            Price

            "..."

            "..."




                                    16 of 27
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                                   APPENDIX 1



            REGULATORY SUPPORT SERVICES

            The objective of this activity is to support the regulatory aspects
            of manufacturing Angiostatin at the CBSI facility.

            The Regulatory support segment includes the following activities:

                  -     Prepare site documents

                  -     Prepare scale-up/development and other reports

                  -     Write the CMC sections for Phase I IND filing

                  -     Respond to any questions related to manufacturing raised
                        by regulatory authorities

                  -     Host any inspections


            Price

            "..."

            "...":      "..."

            "..."



                                    17 of 27
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                  with the Securities and Exchange Commission]

                                   APPENDIX 1


            PROGRAM MANAGEMENT

            CBSI takes a Program Team approach to managing all manufacturing
            projects. The Program Team would consist of a CBSI Program Manager,
            a representative from EntreMed and CBSI representatives from process
            development, quality and manufacturing. The Program Team would meet
            weekly via teleconference or in person.

            The Executive Committee will meet on a monthly basis (or as
            required) to review Program progress, review budgetary progress and
            address any outstanding issues.

            The Program Manager is responsible for coordination of all technical
            aspects of the Program, including monitoring financial and temporal
            progress of the Program and submitting periodic reports.

            CBSI will provide a Program Manager for the duration of the project.

            Price

            "..."




            FILL/FINISH OF TOXICOLOGY MATERIAL

            The objective of this activity is to vial Angiostatin for toxicology
            studies.

                  -     The fill concentration for Angiostatin toxicology
                        material will be "..." in a formulation to be mutually
                        determined.

                  -     CBSI will perform "..." vial fills in "..." vials ("..."
                        per vial).


            Price

             "..."










                                    18 of 27
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     Confidential Treatment Request, which the Company has filed separately
                  with the Securities and Exchange Commission]

                                   APPENDIX 1



QA RELEASE TESTING OF VIALED CLINICAL MATERIAL

            The objective of this activity is to provide QC testing of vialed
            Angiostatin for use in human clinical studies.

                  -     Receive vialed Angiostatin from "...".

                  -     Test vialed Angiostatin per Item Specifications to be
                        determined. Testing to be performed by CBSI QC staff.

                  -     Provide certificate of analysis, released by QA, for
                        vialed Angiostatin.

            Price

            The price for this phase of the Program is "...".

            "..."


  SAMPLING OF LARGE SCALE DEMONSTRATION RUNS FOR DIAGNOSTIC PURPOSES

            The objective of this activity is to allow diagnostic assessment of
            the large scale production process for Angiostatin.

                  -     Draw samples at appropriate process points during large
                        scale demonstration runs for diagnostic assessment of
                        Angiostatin activity
                  -     Ship samples to EntreMed for diagnostic assessment

            Price

            The price for sampling and shipping samples is "...".  "...".




                                    19 of 27
<PAGE>   31
            [ "..." indicates material has been omitted pursuant to a
     Confidential Treatment Request, which the Company has filed separately
                  with the Securities and Exchange Commission]

                                   APPENDIX 1


FINANCIAL SUMMARY FOR "..." COMPONENTS OF ANGIOSTATIN MANUFACTURING RELATED
ACTIVITIES



<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------
                           ANGIOSTATIN MANUFACTURING RELATED
                                        ACTIVITIES                                        "..."
- ------------------------------------------------------------------------------------------------------------

<S>                                                                                       <C>
Technology Transfer                                                                                   "..."
- ------------------------------------------------------------------------------------------------------------

Cell Banking and Testing                                                                              "..."
- ------------------------------------------------------------------------------------------------------------

Pre-Production Activities                                                                             "..."
- ------------------------------------------------------------------------------------------------------------

Large Scale "..." Demonstration Runs                                                                  "..."
- ------------------------------------------------------------------------------------------------------------

Assay Qualification                                                                                   "..."
- ------------------------------------------------------------------------------------------------------------

cGMP Stability Studies (for estimated "...")                                                          "..."
- ------------------------------------------------------------------------------------------------------------

Regulatory Support                                                                                    "..."
- ------------------------------------------------------------------------------------------------------------

Project Management                                                                                    "..."
- ------------------------------------------------------------------------------------------------------------

Fill/Finish of Toxicology Material (for estimated "...")                                              "..."
- ------------------------------------------------------------------------------------------------------------

TOTAL                                                                                                 "..."
- ------------------------------------------------------------------------------------------------------------
</TABLE>



- --------------------------------------------------------------------------------
"...".
- --------------------------------------------------------------------------------





                                    20 of 27
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                                   APPENDIX 1



      ANGIOSTATIN LARGE SCALE PRODUCTION OF "..."

      MILESTONE: BEFORE INITIATING TOXICOLOGY MANUFACTURING, CBSI AND ENTREMED
      WILL DETERMINE THAT USEABLE ANGIOSTATIN CAN BE PRODUCED AT LARGE SCALE
      BASED ON THE REVIEW OF DATA FROM THE DEMONSTRATION RUNS.

            TOXICOLOGY MATERIAL MANUFACTURING

            The objective of this activity is to produce material for use in
            toxicology studies and to perform demonstration runs on the
            fermentation process.

            The "..."  MWCB will be used for manufacture of toxicology material.

            Draft cGMP documentation as prepared during pre-production
            activities will be used during production of toxicology material.

            The Quality department will release raw materials used for the
            manufacture of toxicology material.

            CBSI will perform the appropriate number of "..." fermentation runs
            in series with subsequent purification to produce approximately
            "..." of Angiostatin for toxicology studies. CBSI will use its best
            judgement to establish a manufacturing strategy in consultation with
            EntreMed.

            The Analytical Development Group will perform preliminary analysis
            of samples using appropriate assays.

            The Quality Assurance Group will not perform a formal review of
            documentation.

            Toxicology material will be released to EntreMed based on the
            Quality Control (QC) criteria listed below:

                  -     "..."

                  -     "..."

                  -     "..."

                  -     "..."

                  -     "..."

                  -     "..."

                  -     "..."

                  -     "..."


            CBSI will provide EntreMed with copies of the documentation used
            during toxicology production. CBSI will retain the originals in its
            archives.

                                    21 of 27
<PAGE>   33
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     Confidential Treatment Request, which the Company has filed separately
                  with the Securities and Exchange Commission]

                                   APPENDIX 1

            Estimated Price

            See "FINANCIAL SUMMARY FOR ANGIOSTATIN MANUFACTURING" on pages 26-27
            for details

            Note:  If EntreMed requests "...".




                                    22 of 27
<PAGE>   34
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     Confidential Treatment Request, which the Company has filed separately
                  with the Securities and Exchange Commission]

                                   APPENDIX 1



            CLINICAL TRIAL MATERIAL MANUFACTURING

            The objective of this activity is to produce cGMP quality material
            for use in Phase I clinical trials.

            The "..." MWCB will be used for cGMP manufacture of clinical
            material.

            cGMP documentation as prepared during pre-production activities and
            modified during demonstration runs will be adhered to and
            manufacturing will be performed under Quality Assurance oversight as
            described in the Quality Function section.

            CBSI will perform the appropriate number of "..." fermentation runs
            in series with subsequent purification to produce "..." of
            Angiostatin for clinical trials. CBSI will use its best judgement to
            establish a manufacturing strategy in consultation with EntreMed.

            Release criteria for clinical material is to be developed and agreed
            to before clinical trial material manufacturing.


            Note: When manufacturing clinical material, CBSI will follow current
            Good Manufacturing Practices. By testing this material against
            analytical specifications, CBSI will demonstrate this material meets
            specifications for purity and contamination levels. CBSI does not
            warrant that the material produced under cGMP will be biologically
            active. Clinical studies will be used to determine if the material
            is efficacious.


            Analytical methods to verify substance identity and quality will be
            performed by the QC department.

            CBSI will provide EntreMed with copies of the completed and approved
            batch records. All records will be in pre-approved cGMP documents
            subject to full QA review. CBSI will retain the originals in its
            archives.

            Estimated Price

            See "FINANCIAL SUMMARY FOR ANGIOSTATIN MANUFACTURING" on pages 26-27
            for details

            Note:  If EntreMed requests "...".



                                    23 of 27
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     Confidential Treatment Request, which the Company has filed separately
                  with the Securities and Exchange Commission]

                                   APPENDIX 1



            QUALITY FUNCTION

            The objective of this activity is to provide Quality Control and
            Quality Assurance support for cGMP manufacturing activities.
            Activities include:

            -     Provide support to ensure cGMP compliance of clinical material
                  production.

            -     Issue and maintain controlled documents such as item
                  specifications and batch records.

            -     Prepare certificates of analysis.

            -     Perform IPC and Product testing according to approved test
                  methods and specifications.

            -     Characterize reference standard

            -     Compare Angiostatin to reference standard.

            -     Review and approve completed production and environmental
                  control records.

            -     Select, qualify and/or audit vendors, if necessary


            IPC and Product release tests may include the following methods:

                  -     "..."

                  -     "..."

                  -     "..."

                  -     "..."

                  -     "..."

                  -     "..."

                  -     "..."

                  -     "..."

                  -     "..."

                  -     "..."

                  -     "..."


            Estimated Labor

            "...".

            Estimated Price

            See "FINANCIAL SUMMARY FOR ANGIOSTATIN MANUFACTURING" on pages 26-27
            for details.



                                    24 of 27
<PAGE>   36
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     Confidential Treatment Request, which the Company has filed separately
                  with the Securities and Exchange Commission]

                                   APPENDIX 1


FINANCIAL SUMMARY FOR ANGIOSTATIN MANUFACTURING


Table 1
<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------------
                                             Assumptions                                                   Price per run
- ----------------------------------------------------------------------------------------------------------------------------
<S>                                                                                                      <C>
1.     If the process requires:                                                                                "..."
       -     "..." for fermentation
       -     "..." for recovery and purification
- ----------------------------------------------------------------------------------------------------------------------------
2.     If the process requires:                                                                                "..."
       -     "..." for fermentation
       -     MORE THAN "..." AND LESS THAN OR EQUAL TO "..." for recovery and purification
- ----------------------------------------------------------------------------------------------------------------------------
3.     If the process requires:                                                                                "..."
       -     LESS THAN "..." for fermentation and/or
       -     LESS THAN "..." for recovery and purification
- ----------------------------------------------------------------------------------------------------------------------------
4.   If the process requires processing times greater than those indicated in 2. (above), then
      Parties agree that the process is economically unviable and agree to discuss how best to proceed.
- ----------------------------------------------------------------------------------------------------------------------------
</TABLE>






                                    25 of 27
<PAGE>   37
            [ "..." indicates material has been omitted pursuant to a
     Confidential Treatment Request, which the Company has filed separately
                  with the Securities and Exchange Commission]

                                   APPENDIX 1



The price for this section will be based on "...".  "...".

Table 2
<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------------------
<S>                                          <C>                      <C>                           <C>
           "..."                              "..."                       "..."                      "..."
- --------------------------------------------------------------------------------------------------------------------------
           "..."                              "..."                       "..."                      "..."
- --------------------------------------------------------------------------------------------------------------------------
           "..."                              "..."                       "..."                      "..."
- --------------------------------------------------------------------------------------------------------------------------
           "..."                              "..."                       "..."                      "..."
- --------------------------------------------------------------------------------------------------------------------------
           "..."                              "..."                       "..."                      "..."
- --------------------------------------------------------------------------------------------------------------------------
           "..."                              "..."                       "..."                      "..."
- --------------------------------------------------------------------------------------------------------------------------
           "..."                              "..."                       "..."                      "..."
- --------------------------------------------------------------------------------------------------------------------------
           "..."                              "..."                       "..."                      "..."
- --------------------------------------------------------------------------------------------------------------------------
           "..."                              "..."                       "..."                      "..."
- --------------------------------------------------------------------------------------------------------------------------
           "..."                              "..."                       "..."                      "..."
- --------------------------------------------------------------------------------------------------------------------------
           "..."                              "..."                       "..."                      "..."
- --------------------------------------------------------------------------------------------------------------------------
           "..."                              "..."                       "..."                      "..."
- --------------------------------------------------------------------------------------------------------------------------
</TABLE>


Note:  If EntreMed requests "...".


"...".

- --------------------------------------------------------------------------------
"...".
- --------------------------------------------------------------------------------



                                    26 of 27
<PAGE>   38
            [ "..." indicates material has been omitted pursuant to a
     Confidential Treatment Request, which the Company has filed separately
                  with the Securities and Exchange Commission]

                                   APPENDIX 1



ESTIMATED PAYMENT SCHEDULE




<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------
                        FINANCIAL SUMMARY                                                  PAYMENT SCHEDULE
- ----------------------------------------------------------------------------------------------------------------------
<S>                                                                                  <C>
Angiostatin Process Development Activities                                                     "..."
- ----------------------------------------------------------------------------------------------------------------------

"..." Components of Angiostatin Manufacturing-Related Activites                                "..."
- ----------------------------------------------------------------------------------------------------------------------

Angiostatin Manufacturing                                                                      "..."
- ----------------------------------------------------------------------------------------------------------------------
</TABLE>




ACCEPTANCE SIGNATURE


Signature below indicates acceptance of this scope of work.


COVANCE BIOTECHNOLOGY SERVICES INC.               ENTREMED, INC.



By: /s/  JOHN R. BROWN                            By: /s/ JOHN W. HOLADAY
   -------------------                               --------------------

Date: July 7, 1999                                Date: July 7, 1999
      ----------------------                            --------------------



                                    27 of 27


<PAGE>   1
                                                                EXHIBIT 10.35

            [ "..." indicates material has been omitted pursuant to a
     Confidential Treatment Request, which the Company has filed separately
                  with the Securities and Exchange Commission]

                                               COVANCE BIOTECHNOLOGY SERVICES
                                               3000 WESTON PARKWAY
                                               CARY, NC 27513-2300
                                               TEL: (919) 388-5700
                                               FAX: (919) 678-0366
C O V A N C E
THE DEVELOPMENT SERVICES COMPANY



August 30, 1999

John W. Holaday, Ph.D., FCCM
Chairman & Chief Executive
EntreMed, Inc.
9640 Medical Center Drive, Suite 200
Rockville, MD 20850

                                LETTER OF INTENT

This letter constitutes formal notification of EntreMed, Inc.'s (EntreMed)
intent to retain Covance Biotechnology Services, Inc. (Covance) to perform
manufacturing services for clinical production of approximately "..." of
EntreMed's Endostatin(TM) beginning in "...".

"...". Upon signing this letter, Covance and EntreMed are committing to
Endostatin production in "..." and EntreMed commits to pay for the
Endostatin(TM) produced.

The Endostatin(TM) production anticipated to begin in "..." will be performed
under an Amendment or Change Order to the current Agreement (Bioprocessing
Services Agreement dated October 16, 1998). Such Amendment or Change Order will
incorporate the following terms:

- -     EntreMed agrees to purchase "..." of Endostatin(TM) for "...".

- -     The price "..." for the Endostatin(TM) produced in this campaign will be
      "...". The first "..." of this campaign are "...". "...". "...".

- -     The Endostatin(TM) production will begin as soon as possible following the
      completion of the on-going process development work to improve the
      fermentation and purification processes for Endostatin(TM) (Change Order
      "..." and Change Order "..." to the existing Agreement). EntreMed has also
      requested that Covance manufacture Angiostatin(R) up to the time the
      Endostatin(TM) campaign needs to begin and any additional amounts of
      Angiostatin(R) produced beyond the contracted "..." will be "...". The
      current earliest date for completion of the process development work and
      its incorporation into the "..." process is "...".




<PAGE>   2
          [ "..." indicates material has been omitted pursuant to a
    Confidential Treatment Request, which the Company has filed separately
                 with the Securities and Exchange Commission]


C O V A N C E
THE DEVELOPMENT SERVICES COMPANY


- -     The manufacturing process employed in this "..." campaign will include, to
      the extent possible, the process improvements identified by the on-going
      process development work.

- -     Covance will ship bulk Endostatin(TM) to "..." for vialing. Vialing of the
      first "...". Vialing of the subsequent "...".

- -     Covance will use its best efforts to release "..." of vialed
      Endostatin(TM) for "..." by "..." using the above schedule.


EntreMed and Covance recognize that this Letter of Intent is necessary to allow
for immediate prioritization of activities at Covance to switch from "..." to
Endostatin(TM), and to allow Covance to "...".

Upon signature of the necessary Change Orders or Amendments to the current
Bioprocessing Services Agreements for Endostatin(TM) (dated October 16, 1998)
and Angiostatin(R) (dated July 7, 1999) as anticipated under this
Letter-of-Intent, Covance agrees to provide Endostatin(TM) batches "..." and
"..." to EntreMed "...".


Signatures below indicate acceptance of the above mentioned terms.



 /s/  V. BRYAN LAWLIS                        /s/  JOHN W. HOLADAY
- ----------------------------                 ----------------------------------
V. Bryan Lawlis, Ph.D.                       John W. Holaday, Ph.D., FCCM
Chairman                                     Chairman & Chief Executive Officer
Covance Biotechnology Services Inc.          EntreMed, Inc.

Date:       9/1/99                           Date:       8/31/99
        -----------------                          ----------------------






<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED CONSOLIDATED BALANCE SHEETS AND THE CONDENSED CONSOLIDATED STATEMENTS
OF OPERATIONS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>

<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                      39,898,939
<SECURITIES>                                         0
<RECEIVABLES>                                  549,042
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                            40,760,058
<PP&E>                                       6,067,034
<DEPRECIATION>                               2,095,311
<TOTAL-ASSETS>                              45,637,514
<CURRENT-LIABILITIES>                        5,283,261
<BONDS>                                              0
                                0
                                          0
<COMMON>                                       147,059
<OTHER-SE>                                  40,334,163
<TOTAL-LIABILITY-AND-EQUITY>                45,637,514
<SALES>                                              0
<TOTAL-REVENUES>                             4,559,387
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                            27,808,826
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                           (22,052,862)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                       (22,052,862)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                              (22,052,862)
<EPS-BASIC>                                     (1.63)
<EPS-DILUTED>                                   (1.63)


</TABLE>


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