United States
                       Securities and Exchange Commission
                             Washington, D.C. 20549
                                    FORM 10-Q
 (Mark One)
 [X]     QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
         EXCHANGE ACT OF 1934
                  For the quarterly period ended June 30, 2002

[  ]     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: 000-26727

                             BIOMARIN PHARMACEUTICAL INC.
             (Exact name of registrant issuer as specified in its charter)

           Delaware                                      68-0397820
(State or other jurisdiction of             (I.R.S. Employer Identification No.)
incorporation or organization)

          371 Bel Marin Keys Blvd., Suite 210, Novato, California 94949
                    (address of principal executive offices)
                                   (Zip Code)
                                 (415) 884-6700
               (Registrant's telephone number, including area code)

              (Former name, former address and former fiscal year,
                         if changed since last report)

     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 past 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

                APPLICABLE ONLY TO ISSUERS INVOLVED IN BANKRUPTCY
                   PROCEEDINGS DURING THE PRECEDING FIVE YEARS

     Indicate  by check mark  whether the  registrant  filed all  documents  and
reports  required  to be filed by  Sections  12,  13 or 15(d) of the  Securities
Exchange Act of 1934 subsequent to the  distribution of securities  under a plan
confirmed by a court. Yes ____ No_____

                      APPLICABLE ONLY TO CORPORATE ISSUERS

     Indicate the number of shares  outstanding of each of the issuer's  classes
of common stock, as of the latest  practicable  date:  53,424,129  shares common
stock, par value $0.001, outstanding as of August 1, 2002.






                           BIOMARIN PHARMACEUTICAL INC.

                                TABLE OF CONTENTS

                                                                           Page

PART I.  FINANCIAL INFORMATION


         Item 1.  Consolidated Financial Statements (Unaudited).


           Consolidated Balance Sheets.........................................2
           Consolidated Statements of Operations...............................3
           Consolidated Statements of Cash Flows...............................5
           Notes to Consolidated Financial Statements..........................6

         Item 2.  Management's Discussion and Analysis.........................9

         Item 3.  Quantitative and Qualitative Disclosure
                  about Market Risk...........................................27


PART II. OTHER INFORMATION

         Item 1.  Legal Proceedings...........................................28

         Item 2.  Changes in Securities and Uses of Proceeds..................28

         Item 3.  Defaults upon Senior Securities.............................28

         Item 4.  Submission of Matters to a Vote of Security Holders.........28

         Item 5.  Other Information...........................................28

         Item 6.  Exhibits and Reports on Form 8-K............................28

SIGNATURE.....................................................................30















Item 1.  Financial Statements

                  BioMarin Pharmaceutical Inc. and Subsidiaries
                          (a development-stage company)

                           Consolidated Balance Sheets
               (In thousands, except for share and per share data)

                                                                                           


                                                                           December 31,                 June 30,
                                                                               2001                        2002
                                                                      ------------------------   ------------------------
                                                                      ------------------------   ------------------------
Assets                                                                                                 (unaudited)
Current assets:
   Cash and cash equivalents                                                    $      12,528              $      19,363
   Short-term investments                                                             118,569                     81,195
   Due from BioMarin/Genzyme LLC                                                        3,096                      2,135
   Current assets of discontinued operations of Glyko, Inc.                               668                        687
   Other current assets                                                                 1,922                      2,175
                                                                      -----------------------    -----------------------
    Total current assets                                                              136,783                    105,555

Property and equipment, net                                                            32,560                     32,704
Investment in BioMarin/Genzyme LLC                                                      1,145                      2,356
Other non-current assets                                                                1,323                      1,358
                                                                      ------------------------   ------------------------
     Total assets                                                               $     171,811              $     141,973
                                                                      ========================   ========================

Liabilities and Stockholders' Equity
Current liabilities:
 Accounts payable                                                               $      4,284               $      2,014
 Accrued liabilities                                                                   2,198                      3,348
 Current liabilities of discontinued operations of Glyko, Inc.                           229                        158
 Other current liabilities                                                             1,591                      2,211
                                                                       ------------------------   ----------------------
  Total current liabilities                                                            8,302                      7,731

 Long-term liabilities                                                                 3,961                      3,463
                                                                      ------------------------   -----------------------
  Total liabilities                                                                   12,263                     11,194
                                                                      ------------------------   -----------------------

Stockholders' equity:
 Common stock, $0.001 par value:  75,000,000
  shares authorized, 52,402,535 and 53,424,129
  shares issued and outstanding December 31,
  2001 and June 30, 2002, respectively                                                    52                         53
 Additional paid-in capital                                                          305,230                    316,813
 Warrants                                                                              5,134                      5,219
 Deferred compensation                                                                 (699)                      (281)
 Notes receivable from stockholders                                                  (2,037)                    (2,108)
 Accumulated other comprehensive income                                                 (13)                        216
 Deficit accumulated during the development stage                                  (148,119)                  (189,133)
                                                                      ------------------------   -----------------------
   Total stockholders' equity                                                        159,548                    130,779
   Total liabilities and stockholders' equity                         ------------------------   -----------------------
                                                                                $    171,811              $     141,973
                                                                      ========================   =======================


          The accompanying notes are an integral part of these statements.

                                       2




                  BioMarin Pharmaceutical Inc. and Subsidiaries
                          (a development-stage company)

                      Consolidated Statements of Operations
                For the Three Months Ended June 30, 2001 and 2002
                (In thousands, except per share data, unaudited)


                                                                                     


                                                                            Three Months Ended June 30,
                                                                 --------------------------------------------------
                                                                          2001                      2002
                                                                 -----------------------   ------------------------
Revenues:
      Revenues from BioMarin/Genzyme LLC                                     $    2,852                $     3,423
      Revenues - other                                                              160                          -
                                                                 -----------------------   ------------------------
          Total revenues                                                          3,012                      3,423
                                                                 -----------------------   ------------------------

Operating Costs and Expenses:
      Research and development                                                   11,506                     13,336
      General and administrative                                                  1,536                      3,062
                                                                 ----------------------    -----------------------
          Total operating costs and expenses                                     13,042                     16,398
                                                                 -----------------------   ------------------------

Loss from operations                                                           (10,030)                   (12,975)

Interest income                                                                     436                      1,024
Interest expense                                                                    (1)                      (161)
Loss from BioMarin/Genzyme LLC                                                  (1,736)                    (2,461)
                                                                 -----------------------   ------------------------

Net loss from continuing operations                                            (11,331)                   (14,573)
Income (loss) from discontinued operations                                        (638)                        172
Loss from disposal of discontinued operations                                         -                       (10)
                                                                 -----------------------   ------------------------
   Net loss                                                                  $ (11,969)                $  (14,411)
                                                                 =======================   ========================

Net loss per share, basic and diluted:
      Loss from continuing operations                                        $   (0.28)                $    (0.27)
      Loss from discontinued operations                                          (0.02)                         -
                                                                 -----------------------   ------------------------
      Net loss                                                             $     (0.30)               $     (0.27)
                                                                 =======================   ========================

Weighted average common shares outstanding                                       39,587                     53,407
                                                                 =======================   ========================



         The accompanying notes are an integral part of these statements.
                                       3




                      BioMarin Pharmaceutical Inc. and Subsidiaries
                             (a development-stage company)

                    Consolidated Statements of Operations (continued)
                   For the Six Months Ended June 30, 2001 and 2002 and
               for the Period from March 21, 1997 (Inception) to June 30, 2002
                     (In thousands, except per share data, unaudited)


                                                                                                  

                                                                                                         Period from March 21,
                                                                    Six Months Ended June 30,              1997 (Inception) to
                                                            ------------------------------------------       June 30, 2002
                                                                      2001              2002
                                                            --------------------    ------------------     -----------------------
Revenues:
  Revenues from BioMarin/Genzyme LLC                            $          5,542       $         7,215        $             34,413
  Revenues - other                                                           160                     -                         369
                                                            --------------------    ------------------     -----------------------
    Total revenues                                                         5,702                 7,215                      34,782
                                                            --------------------    ------------------     -----------------------

Operating Costs and Expenses:
  Research and development                                                21,163                26,554                     144,837
  General and administrative                                               3,010                 6,988                      29,032
  In-process research and development                                          -                11,223                      22,870
  Facility closure                                                             -                     -                       4,423
                                                            --------------------    ------------------     -----------------------
    Total operating costs and expenses                                    24,173                44,765                     201,162
                                                            --------------------    ------------------     -----------------------

Loss from operations                                                    (18,471)              (37,550)                   (166,380)

Interest income                                                              904                 1,404                       8,836
Interest expense                                                             (3)                 (252)                     (1,008)
Loss from BioMarin/Genzyme LLC                                           (2,844)               (4,759)                    (16,724)
                                                            --------------------    ------------------     -----------------------

Net loss from continuing operations                                     (20,414)              (41,157)                   (175,276)
Income (loss) from discontinued operations                               (1,255)                   294                     (5,794)
Loss from disposal of discontinued operations                                  -                 (151)                     (8,063)
                                                            --------------------    ------------------     -----------------------
  Net loss                                                      $       (21,669)       $      (41,014)        $          (189,133)
                                                            ====================    ==================     =======================

Net loss per share, basic and diluted:
  Net loss from continuing operations                           $         (0.54)       $        (0.78)        $             (5.72)
  Loss from discontinued operations                                       (0.03)                (0.01)                      (0.19)
  Loss on disposal of discontinued operations                                  -                     -                      (0.26)
                                                            --------------------    ------------------     -----------------------
       Net loss                                                 $         (0.57)       $        (0.77)        $             (6.17)
                                                            ====================    ==================     =======================

Weighted average common shares outstanding                                38,313                52,973                      30,669
                                                            ====================    ==================     =======================



            The accompanying notes are an integral part of these statements.

                                       4




                   BioMarin Pharmaceutical Inc. and Subsidiaries
                           (a development-stage company)

                        Consolidated Statements of Cash Flows
                 For the Six Months Ended June 30, 2001 and 2002 and
             for the Period from March 21, 1997 (Inception) to June 30, 2002
                             (In thousands, unaudited)


                                                                                                        

                                                                                                               Period from March 21,
                                                                            Six Months Ended June 30,           1997 (Inception) to
                                                                     ----------------------------------------       June 30, 2002
                                                                             2001               2002
                                                                     ------------------    ------------------    -------------------
Cash flows from operating activities:
  Net loss from continuing operations                                   $      (20,414)        $     (41,157)         $    (175,276)
  Adjustments to reconcile net loss to net
      cash used in operating activities:
      In-process research and development                                             -                10,286                 21,933
      Facility closure                                                                -                     -                  3,791
      Depreciation                                                                2,444                 3,821                 18,728
      Amortization of deferred compensation                                         418                   418                  4,179
      Loss from BioMarin/Genzyme LLC                                              8,386                12,057                 50,221
      Other non-cash compensation                                                     -                   206                    206
 Changes in operating assets and liabilities:
      Other current assets                                                          862                 2,769                (1,593)
      Notes receivable from officers                                              (867)                 (350)                (1,239)
      Deposits                                                                        -                     -                  (434)
      Accounts payable                                                          (1,676)               (2,498)                  1,885
      Accrued liabilities                                                           132                 1,150                  3,669
                                                                     ------------------    ------------------    -------------------
         Net cash used in continuing operations                                (10,715)              (13,298)               (73,930)
         Net cash provided by (used in) discontinued operations                   (536)                    53                    802
                                                                     ------------------    ------------------    -------------------
         Net cash used in operating activities                                 (11,251)              (13,245)               (73,128)
                                                                     ------------------    ------------------    -------------------

Cash flows from investing activities:
      Purchase of property and equipment                                        (4,650)               (3,858)               (54,909)
      Purchase of Synapse Technologies, Inc.                                          -               (1,028)                (1,028)
      Investment in BioMarin/Genzyme LLC                                        (8,657)              (13,268)               (52,577)
      Purchase of IBEX therapeutic assets                                             -                     -                (3,032)
      (Purchase) sale of short-term investments                                (17,247)                37,632               (80,937)
                                                                     ------------------    ------------------    -------------------
         Net cash provided by (used in) continuing operations                  (30,554)                19,478              (192,483)
         Net cash used in discontinued operations                                     -                     -                (1,663)
                                                                     ------------------    ------------------    -------------------
         Net cash provided by (used in) investing activities                   (30,554)                19,478              (194,146)
                                                                     ------------------    ------------------    -------------------

Cash flow from financing activities:
      Proceeds from sale of common stock, net                                    43,586                     -                232,823
      Proceeds from issuance of convertible notes                                     -                     -                 25,615
      Net proceeds from Acqua Wellington agreement                                    -                     -                 13,163
      Proceeds from exercise of stock options and warrants                          512                   487                  8,182
      Net proceeds from notes payable                                                 -                   894                  6,533
      Repayment of notes payable                                                   (14)                 (865)                (1,115)
      Repayment of capital lease obligations                                          -                  (34)                   (77)
      Receipts from notes receivable from stockholders                                -                     -                    804
      Issuance of common stock for ESPP and other                                   158                   149                    751
                                                                     ------------------    ------------------    -------------------
         Net cash provided by financing activities                               44,242                   631                286,679
                                                                     ------------------    ------------------    -------------------

Effect of foreign currency translation on cash                                        -                  (29)                   (42)

         Net increase in cash                                                     2,437                 6,835                 19,363

Cash and cash equivalents:
      Beginning of period                                                        16,530                12,528                      -
                                                                     ------------------    ------------------    -------------------
      End of period                                                     $        18,967        $       19,363         $       19,363
                                                                     ==================    ==================    ===================



          The accompanying notes are an integral part of these statements.

                                       5





                  BIOMARIN PHARMACEUTICAL INC. AND SUBSIDIARIES
                          (a development-stage company)

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Unaudited)

1.    BASIS OF PRESENTATION:

BioMarin  Pharmaceutical  Inc.  (the  Company)  is a  biopharmaceutical  company
specializing   in  the   development  of  enzyme   therapies  to  treat  serious
life-threatening   diseases.   Since   inception,   the   Company   has  devoted
substantially  all  of its  efforts  to  research  and  development  activities,
including   preclinical  studies  and  clinical  trials,  the  establishment  of
laboratory,  clinical and commercial scale  manufacturing  facilities,  clinical
manufacturing, and related administrative activities.

The Company was incorporated in 1996 in the state of Delaware and began business
on March 21, 1997  (inception) as a wholly-owned  subsidiary of Glyko Biomedical
Ltd. (GBL). Subsequently, the Company has issued stock to outside investors in a
series  of   transactions,   resulting  in  GBL's  ownership  of  the  Company's
outstanding common stock being reduced to 21.3% at June 30, 2002.

In December  2001, the Company  decided to close the business of Glyko,  Inc., a
wholly-owned  subsidiary.  The majority of the Glyko,  Inc.  employees have been
incorporated  into the  BioMarin  business  to provide  necessary  analytic  and
diagnostic support to the Company's therapeutic products.  The results of Glyko,
Inc.'s  operations are included in the accompanying  consolidated  statements of
operations as income (loss) from discontinued  operations.  Glyko,  Inc.'s gross
revenues for the six months ended June 30, 2002 and 2001 and for the period from
March 21, 1997  (inception)  through  June 30,  2002,  were $1.8  million,  $1.4
million and $9.2 million, respectively.

Through June 30, 2002, the Company had accumulated losses during its development
stage of  approximately  $189.1  million.  Based on  current  plans,  management
expects to incur further losses for the foreseeable future.  Management believes
that the Company's cash, cash equivalents and short-term investments at June 30,
2002 will be  sufficient to meet the  Company's  obligations  through the end of
2003.  Until  the  Company  can  generate  sufficient  levels  of cash  from its
operations, the Company expects to continue to finance future cash needs through
the sale of equity  securities,  equipment-based  financing,  and  collaborative
agreements with corporate partners.

The accompanying  unaudited consolidated financial statements have been prepared
in  accordance  with  generally  accepted  accounting   principles  for  interim
financial  information  on  substantially  the same basis as the annual  audited
financial  statements.  However,  they do not include all of the information and
footnotes  required by generally  accepted  accounting  principles  for complete
financial statements. In the opinion of management, all adjustments,  consisting
of normal recurring  adjustments,  considered  necessary for a fair presentation
have been included.

Operating  results  for  the  six-month  period  ended  June  30,  2002  are not
necessarily  indicative  of the results that may be expected for the year ending
December 31, 2002. These  consolidated  financial  statements  should be read in
conjunction  with the financial  statements  and footnotes  thereto for the year
ended December 31, 2001 included in the Company's Form 10-K Annual Report.

2.       SIGNIFICANT ACCOUNTING POLICIES:

Use of Estimates

The preparation of financial  statements in conformity  with generally  accepted
accounting   principles  requires  management  to  make  certain  estimates  and
assumptions  that  affect  the  reported  amounts  of  assets  and  liabilities,
disclosure of contingent  assets and  liabilities  at the dates of the financial
statements,  and the  reported  amounts  of  revenues  and  expenses  during the
reporting period. Actual results could differ from those estimates.

                                       6


Cash and Cash Equivalents

For the  consolidated  statements  of cash  flows,  the  Company  treats  liquid
investments with original maturities of less than three months when purchased as
cash and cash equivalents.

Short-Term Investments

The   Company   records   its   investments   as  either   held-to-maturity   or
available-for-sale.  The investments the Company records as held-to-maturity are
recorded at amortized cost at June 30, 2002. The investments the Company records
as  available-for-sale  are  recorded at fair market value at June 30, 2002 with
unrealized  gains or losses being  included in accumulated  other  comprehensive
income.  Short-term investments are comprised mainly Federal agency investments,
bond mutual funds and corporate bonds.

Investment in BioMarin/Genzyme LLC and Related Revenue

Under the terms of the Company's  joint  venture  agreement  with  Genzyme,  the
Company  and  Genzyme  have each agreed to provide 50 percent of the funding for
the  joint  venture.   All  research  and  development,   sales  and  marketing,
administrative,  and other  activities  performed  by Genzyme and the Company on
behalf of the joint venture are billed to the joint venture at cost. Any profits
or losses of the joint venture are shared equally by the two parties.

The Company  accounts for its  investment  in the joint venture using the equity
method.  The Company  recognizes  50% of amounts  billed to the joint venture as
revenue in accordance with its policy to recognize revenue for these billings to
the extent that  payments  for the billings  were funded by Genzyme.  The 50% of
amounts billed to the joint venture that is funded by the Company is recorded as
an offset to the Company's equity in the loss of the joint venture.

Other Assets

Pursuant to an employment  agreement with an officer of the Company, the Company
loaned  the  officer  $860,000  to  purchase  a local  property  and  received a
promissory  note secured by the  property.  The note matures on October 31, 2004
(subject to various conditions in the employment  agreement),  bears interest at
the Federal  mid-term  rate and is included in other  non-current  assets in the
accompanying consolidated financial statements.

In February  2002, the Company  loaned  another  officer  $300,000 to purchase a
residence and received a promissory  note secured by the officer's  unencumbered
shares of the Company owned by the officer.  The note is full-recourse,  matures
on October  31,  2002,  bears  interest at the  Federal  short-term  rate and is
included in other  current  assets in the  accompanying  consolidated  financial
statements.

Property and Equipment

Property and equipment are stated at cost.  Depreciation  is computed  using the
straight-line method.  Leasehold improvements are amortized over the life of the
asset or the term of the lease, whichever is shorter.  Significant additions and
improvements  are  capitalized,  while  repairs and  maintenance  are charged to
expense as incurred.

Property and equipment consisted of the following (in thousands):
                                               December 31,         June 30,
                                                   2001               2002
                                            ------------------  ----------------

Computer hardware and software                       $  1,532           $  2,156
Office furniture and equipment                          1,557              1,672
Manufacturing and laboratory equipment                 11,769             12,150
Leasehold improvements                                 30,886             33,732
Construction in progress                                1,064              1,064
                                            ------------------  ----------------
                                                       46,808             50,774
Less:  Accumulated depreciation                      (14,248)           (18,070)
                                            ------------------  ----------------
                Total, net                           $ 32,560           $ 32,704
                                            ==================  ================

                                       7



Stockholders' Equity

The notes from stockholders  included in stockholders' equity are currently due.
The Company does not believe there will be any problems collecting on the notes.

Accumulated other comprehensive income as at December 31, 2001 and June 30, 2002
includes foreign currency translation  adjustments associated with the Company's
Canadian  operations and unrealized  gains and losses on short-term  investments
classified as available-for-sale.

Research and Development

Research and development  expenses include the expenses associated with contract
research and  development  provided by third parties,  research and  development
performed in connection with the  BioMarin/Genzyme  LLC joint venture (including
clinical  manufacturing,  clinical  operations and regulatory  activities),  and
internal  research and  development  activities.  All  research and  development
expenses are expensed as incurred.

Net Loss per Share

Potentially  dilutive  securities  outstanding at June 30, 2002 and 2001 include
options and  warrants  for the purchase of  8,533,229  and  6,771,911  shares of
common  stock,  respectively.  These  securities  were  not  considered  in  the
computation   of  dilutive   loss  per  share  because  their  effect  would  be
anti-dilutive  for the three  months and the six months  ended June 30, 2002 and
2001.

Recent Accounting Pronouncements

On January 1, 2002, the Company adopted SFAS No. 141 "Business Combinations" and
SFAS No. 144 "Accounting  for the Impairment or Disposal of Long-Lived  Assets".
Adoption of these pronouncements did not have a material impact on the Company's
net loss.

On January 1, 2002,  the Company also adopted SFAS 142 "Goodwill and  Intangible
Assets"  (SFAS 142). If the Company  adopted SFAS 142 on January 1, 2001,  there
would be no change to net loss from  continuing  operations.  The  Company's net
loss and net loss per share for the three  months and the six months  ended June
30,   2001  would  have  been   $11,478,000,   $20,688,000,   $0.29  and  $0.54,
respectively.

3.       NOTE PAYABLE:

In May 2002, the Company entered into an agreement with General Electric Capital
Corporation for a secured loan totaling $0.9 million. The note bears interest at
9.33%  per  annum  and  is  secured  by  certain  manufacturing  and  laboratory
equipment.  Additionally,  the  agreement  requires  the  Company to  maintain a
minimum  unrestricted cash balance of $25 million.  Should the unrestricted cash
balance fall below $25  million,  the note is subject to  prepayment,  including
prepayment penalties ranging from 1% to 4%.

4.      DEFINITIVE AGREEMENT WITH GLYKO BIOMEDICAL, LTD. (GBL):

In  February  2002,  the  Company  signed  a  definitive  agreement  with  Glyko
Biomedical Ltd. (GBL) whereby the Company would purchase (subject to shareholder
and regulatory  approval) all of GBL's outstanding capital stock in exchange for
approximately  11.4 million shares of freely  tradable common stock of BioMarin.
The  proposed  purchase,  including  the  issuance  of the 11.4  million  freely
tradable shares, will be voted upon by the Company's  stockholders on August 13,
2002. The proposed purchase will be voted upon by GBL shareholders on August 15,
2002.  There  will  be no  dilution  to  common  stock  as upon  closing  of the
transaction,  the Company  plans to retire the 11.4  million  restricted  shares
currently held by GBL in exchange for BioMarin  preferred stock. The Company has
incurred  approximately  $1.1 million and $0.4 million of costs  associated with
this proposed transition in 2002 and 2001, respectively.


5.       SUBSEQUENT EVENTS:

In July 2002, the Company signed an agreement with an unrelated  third party for
the manufacturing of Neutralase. In 2002 and 2003, total expenditures related to
this agreement are expected to be less than $6.0 million.
                                       8



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


                           FORWARD-LOOKING STATEMENTS

     The following "Management's  Discussion and Analysis of Financial Condition
     and Results of Operations" contains "forward-looking statements" as defined
     under  securities laws. These statements can often be identified by the use
     of  terminology  such as  "believes,"  "expects,"  "anticipates,"  "plans,"
     "may,"   "will,"   "projects,"   "continues,"   "estimates,"   "potential,"
     "opportunity" and so on. These  forward-looking  statements may be found in
     the "Factors  that May Affect Future  Results," and other  sections of this
     document.  Our actual results or experience could differ significantly from
     the forward-looking  statements.  Factors that could cause or contribute to
     these  differences  include  those  discussed  in "Factors  that May Affect
     Future Results," as well as those discussed elsewhere in this document.

     You should not place undue reliance on these  statements,  which speak only
     as of the date that they were made. These cautionary  statements  should be
     considered  in  connection   with  any  written  or  oral   forward-looking
     statements  that  we may  issue  in the  future.  We do not  undertake  any
     obligation  to release  publicly  any  revisions  to these  forward-looking
     statements  after  completion  of the  filing of this Form 10-Q to  reflect
     later events or circumstances or to reflect the occurrence of unanticipated
     events.

Overview

We develop  enzyme  therapies to treat  serious,  life-threatening  diseases and
conditions.  We leverage  our  expertise  in enzyme  biology to develop  product
candidates    for    the    treatment    of    genetic    diseases,    including
Mucopolysaccharidosis  I  (MPS  I),   Mucopolysaccharidosis   VI  (MPS  VI)  and
Phenylketonuria  (PKU),  as well  as  other  critical  care  situations  such as
cardiovascular surgery and serious burns. Our product candidates address markets
for which no products are  currently  available or where  current  products have
been   associated  with  major   deficiencies.   We  focus  on  conditions  with
well-defined  patient  populations,  including genetic  diseases,  which require
chronic therapy.

Our lead product candidate,  Aldurazyme(TM) is being developed for the treatment
of MPS I disease.

We are developing  another product  candidate,  Neutralase(TM),  for reversal of
anticoagulation by heparin in patients  undergoing Coronary Artery Bypass Graft,
or CABG,  surgery and angioplasty.  Heparin is a carbohydrate drug commonly used
to  prevent  coagulation,  or  blood  clotting,  during  certain  types of major
surgery.  Neutralase is a  carbohydrate-modifying  enzyme that cleaves  heparin,
allowing coagulation of blood and aiding patient recovery following CABG surgery
and angioplasty. Based on data from previous trials, we plan to initiate a Phase
3 trial in CABG surgery in the third quarter of 2002.

In addition to Aldurazyme and Neutralase,  we are developing other  enzyme-based
therapeutics for the treatment of a variety of diseases and conditions. In 2001,
we announced the results of a Phase 1 trial of  AryplaseTM  for the treatment of
MPS VI, another seriously  debilitating genetic disease.  Based on data from the
Phase 1 trial we  initiated a Phase 2 trial of Aryplase in the first  quarter of
2002. We are also  developing  VibrilaseTM,  a topical enzyme product for use in
removing  burned skin tissue in preparation  for skin grafting or other therapy.
We initiated a Phase 1 clinical  trial of Vibrilase in the United Kingdom in the
fourth quarter of 2001, and expect to analyze the results from this trial in the
fourth quarter of 2002. In addition, we are pursuing preclinical  development of
other enzyme product candidates for genetic and other diseases.

Recent Developments

On July 31, 2002, we announced  that the U.S.  Patent and  Trademark  Office has
issued U.S. Patent No. 6,426,208 covering Aldurazyme for the treatment of MPS I.
Aldurazyme is a specific form of purified recombinant human  alpha-L-iduronidase
that is being developed as an investigational enzyme replacement therapy for MPS
I, a  life-threatening  genetic  disease for which no specific  drug  treatments
currently exist. The patent claims unique  characteristics of the pharmaceutical
composition  of  Aldurazyme,  including,  but not  limited  to,  the  purity  of
alpha-L-iduronidase  in the final  formulation.  This patent,  which  protects a
highly purified form of alpha-L-iduronidase,  supports the intellectual property
position for using Aldurazyme to treat MPS I.

                                       9


On July 29, 2002, we announced  that  together  with our joint venture  partner,
Genzyme,  we submitted  the final  portion of our  "rolling"  Biologics  License
Application (BLA) for Aldurazyme to the U.S. Food and Drug Administration (FDA).
The filing  commenced  on April 15, 2002,  as  previously  announced.  The final
portion of the BLA includes clinical data from the six-month, placebo-controlled
Phase 3 trial of  Aldurazyme,  six  months of data from the  ongoing  open-label
Phase 3  extension  study,  and  three  years of data from the Phase 1 trial and
extension  study.  As part of the BLA  submission,  Genzyme and we have formally
requested  Priority  Review.  Genzyme and we  anticipate a response from the FDA
regarding the  application to market  Aldurazyme in the United States during the
first half of 2003.

On June 25, 2002, we announced that the principal  investigator from the Phase 1
clinical  trial of Aryplase  for MPS VI  presented  positive  findings  from the
trial's extension study that indicate Aryplase continues to be well-tolerated at
both dose levels by the five patients who have received treatment for a total of
48 weeks.  In addition,  the patients  receiving the 1.0 mg/kg dose continued to
produce a greater sustained  reduction than the patients receiving the 0.2 mg/kg
dose in the excretion of urinary  glycosaminoglycans  (GAGs) over 48 weeks.  The
reduction in urinary GAGs  indicates  that Aryplase is breaking down the complex
carbohydrate  materials  that  otherwise  accumulate in patients with MPS VI and
lead to the debilitating and life-threatening symptoms of the disease.

On June 14, 2002,  we  announced  that  investigators  from the Phase 3 clinical
trial of Aldurazyme for MPS I presented  detailed  results from the double-blind
portion of the trial and preliminary six-month findings from the trial's ongoing
open-label  extension study. Data from the extension study indicate patients who
received Aldurazyme for twelve months continued to improve upon the results seen
in the first six months of treatment.

On May  15,  2002,  we  announced  that  we  commenced  preclinical  studies  of
NeuroTrans  and  initiated  key  steps to  continue  building  the  technology's
intellectual  property  position.  NeuroTrans is the proprietary  brain delivery
technology that we are developing to treat neurological problems associated with
many lysosomal storage disorders.

On April 22, 2002, we announced  that we had begun dosing  patients in a Phase 2
clinical trial of Aryplase for the treatment of MPS VI. The primary objective of
this open-label,  multi-national  Phase 2 clinical trial will be to evaluate the
efficacy,  safety and  pharmacokinetics  of weekly intravenous  infusions of 1.0
mg/kg of Aryplase in 10 MPS VI patients.  This dose  represents the higher level
of two doses administered in the six-patient Phase 1 trial.

On April 1, 2002, we announced  that  together  with our joint venture  partner,
Genzyme,  we have filed with  European  regulatory  authorities  for approval to
market  Aldurazyme.  Our  joint  venture  submitted  a  Marketing  Authorization
Application (MAA) to the European  Medicines  Evaluation Agency (European Union)
(or EMEA) on March 1, 2002.  The EMEA has accepted our MAA and validated that it
is complete and ready for scientific review.  Accordingly,  the EMEA's Committee
for Proprietary  Medicinal  Products (CPMP) will now evaluate the application to
determine  whether to approve  Aldurazyme  for the  treatment of MPS I in all 15
member states of the European Union.  Norway and Iceland also participate in the
CPMP but have a separate approval process.

Results of Operations

In December 2001, we decided to close the  carbohydrate  analytical  business of
our wholly owned  subsidiary,  Glyko, Inc. The decision to close Glyko, Inc. has
resulted in the  operations of Glyko,  Inc.  being  classified  as  discontinued
operations in our consolidated  financial statements and,  accordingly,  we have
segregated  the assets and  liabilities  of the  discontinued  operations in our
consolidated  balance  sheets.  In addition,  we have  segregated  the operating
results in our  consolidated  statements of operations and have  segregated cash
flows from discontinued operations in our consolidated statements of cash flows.
Glyko operations ceased on July 31, 2002.

Quarters Ended June 30, 2002 and 2001

For the quarters  ended June 30, 2002 and 2001,  revenues  were $3.4 million and
$3.0 million,  respectively,  which came  primarily  from our joint venture with
Genzyme.  The increase in joint venture  revenues in the second  quarter of 2002
compared  to the same  period  in 2001 was  caused  by  increased  manufacturing
activities  for  qualification  lots  used  for  the new  manufacturing  process
developed to maximize  output of the plant of $0.9  million  offset by decreased
clinical  efforts  of  $0.2  million  and a  reduction  in  process  development
activities of $0.3 million.

                                       10


Research  and  development  expenses  increased  to $13.3  million in the second
quarter  of 2002 from  $11.5  million in  comparable  period of 2001.  The major
factors in the growth of research and development  expenses include $1.0 million
of increased expenses for the Aldurazyme joint venture with Genzyme,  especially
in manufacturing,  and $1.4 million for the increased manufacturing and research
staff to support our product  programs,  including  the  addition of  scientific
staff in Montreal,  Canada in October 2001  supporting  Neutralase and Phenylase
and in Vancouver, Canada in March 2002 supporting NeuroTrans,  offset by an $0.8
million decrease for  manufacturing  and clinical  requirements of Aryplase.  We
anticipate research and development  expenditures to continue to increase in the
future in order to further develop our drug product candidates.

General and  administrative  expenses  increased  to $3.1  million in the second
quarter  of 2002 from  $1.5  million  in the  comparable  period  of 2001.  This
increase was primarily due to $0.3 million of costs incurred for legal and other
fees associated with the potential acquisition of all of the outstanding capital
stock of Glyko  Biomedical  Ltd. (in exchange for our common  stock) , increased
staffing in finance,  business development,  human resources,  and purchasing of
$0.8 million,  expenses related to the  implementation of an improved  financial
reporting and budgeting software system of $0.5 million, and an increase in rent
expense  of $0.2  million,  partially  offset  by  several  small  decreases  in
administrative costs.

Interest income  increased by $0.6 million to $1.0 million in the second quarter
of 2002 from $0.4 million in the second  quarter of 2001 primarily due to higher
cash balances resulting from financing activities.

Interest  expense for the second  quarter of 2002 was $0.2 million and $1,000 in
the comparable  period of 2001. The increase was due to equipment loans executed
for $5.5 million in December 2001 and $0.9 million in May 2002.

Our equity in the loss of our joint  venture  with  Genzyme was $2.5 million for
the second  quarter of 2002  compared to $1.7 million for the second  quarter of
2001, as the joint venture  continued  extension  studies of the Phase 1 and the
Phase 3 clinical trials of Aldurazyme and began filing a BLA with the FDA.

Net loss from  continuing  operations was $14.6 million ($0.27 per share,  basic
and  diluted)  and $11.3  million  ($0.28 per share,  basic and diluted) for the
second quarter of 2002 and 2001, respectively.

Income  (loss)  from  discontinued  operations  was $0.2  million  in the second
quarter  of 2002 and  ($0.6  million)  in the  comparable  period  of 2001.  The
increase to income in the second quarter of 2002 was due to an increase in sales
to customers in  anticipation  of the sale or  discontinuance  of the  analytics
business of Glyko, Inc.

Loss from disposal of discontinued operations represents the Glyko, Inc. closure
expense of $10,000 in the second quarter of 2002  consisting  primarily of legal
fees incurred in  connection  with the sale or  discontinuance  of the analytics
business of Glyko, Inc.

Net loss was $14.4  million  ($0.27  per  share,  basic and  diluted)  and $12.0
million ($0.30 per share, basic and diluted) for the second quarters of 2002 and
2001, respectively.


Six Months Ended June 30, 2002 and 2001

Revenues for the first half of 2002 totaled $7.2 million compared to revenues of
$5.7 million in the first half of 2001.  Revenues came  primarily from our joint
venture with Genzyme.  The increase in joint venture revenues in the second half
of 2002  compared to the same period in 2001 was  primarily  caused by increased
manufacturing activities in support of our Phase 1 and Phase 3 extension studies
of $2.1 million,  partially offset by decreased clinical efforts of $0.2 million
and a reduction in process development activities of $0.4 million.

Research and  development  expenses for the first half of 2002 increased by $5.4
million to $26.6 million from $21.2 million in the first half of 2001. The major
factors in the growth of research and development  expenses include $3.0 million
of increased expenses for the Aldurazyme joint venture with Genzyme,  especially
manufacturing,  regulatory  and clinical  requirements  and $1.8 million for the
increased  manufacturing  and  research  staff to support our product  programs,
including the addition of scientific  staff in Montreal,  Canada in October 2001
supporting  Neutralase  and  Phenylase  and in  Vancouver,  Canada in March 2002
supporting  NeuroTrans.  We anticipate research and development  expenditures to
continue to increase in the future in order to further  develop our drug product
candidates.

                                       11


General and administrative  expenses increased to $7.0 million in the first half
of 2002 from $3.0  million in the first half of 2001.  The  significant  factors
causing the increase in general and administrative  costs were costs incurred in
2002 for legal and other fees associated  with the potential  acquisition of all
of the outstanding  capital stock of Glyko Biomedical Ltd. by us of $1.1 million
(in  exchange for our common  stock),  increased  staffing in finance,  business
development, human resources and purchasing of $1.0 million, expenses related to
the  implementation of an improved  financial  reporting and budgeting  software
system of $0.7 million,  and increase in employer matching of our 401(k) plan of
$0.2 million and an increase in rent expense of $0.2 million.

In-process  research and  development  totaling  $11.2  million  represents  the
majority of the  purchase  price of our  acquisition  of all of the  outstanding
stock of Synapse  Technologies,  Inc. in March 2002 plus  related  expenses.  On
March 21, 2002, we purchased  Synapse  including its development  activities and
preclinical  data on NeuroTrans,  a technology that may allow drugs to cross the
blood brain barrier,  for $10.2 million of our common stock at a deemed price of
$11.50 per share (885,240 shares).  In connection with the Synapse purchase,  we
issued  options and warrants to purchase  80,221 and 27,419 shares of our common
stock,   respectively.   These  options  and  warrants  were  valued  using  the
Black-Scholes  option pricing model and the resulting valuations of $561,000 and
$85,000, respectively,  were included as additional purchase price. The purchase
agreement includes up to Cdn. $8 million (which equaled  approximately U.S. $5.0
million as of August 1, 2002) in  contingency  payments upon certain  regulatory
and licensing milestones if they occur before March 21, 2012.

Interest  income was $1.4  million  for the first half of 2002  compared to $0.9
million for the same period of 2001.  The  increase is  primarily  due to higher
cash balances resulting from financing activities.

Interest  expense for the first half of 2002 was $0.3  million and $3,000 in the
comparable  period of 2001. The increase was due to equipment loans executed for
$5.5 million in December 2001 and $0.9 million in May 2002.

Our equity in the loss of our joint  venture  with  Genzyme was $4.8 million for
the first half of 2002 compared to $2.8 million for the same period of 2001. The
increase is due to  continued  extension  studies of the Phase 1 and the Phase 3
clinical  trials of Aldurazyme,  the  commencement of the filing of the BLA with
the FDA and the filing of the MAA in Europe.

Net loss from  continuing  operations was $41.2 million ($0.78 per share,  basic
and  diluted)  and $20.4  million  ($0.54 per share,  basic and diluted) for the
second half of 2002 and 2001, respectively.

Income  (loss)  from  discontinued  operations  was $0.3  million  in the second
quarter  of 2002 and  ($1.3  million)  in the  comparable  period  of 2001.  The
increase to income in the second half of 2002 was due to an increase in sales to
customers  in  anticipation  of the  sale  or  discontinuance  of the  analytics
business  and a decrease in general and  administrative  expenses as a result of
the closure of Glyko, Inc.

Loss from disposal of discontinued operations represents the Glyko, Inc. closure
expense of $0.2  million  in the second  half of 2002  consisting  primarily  of
accrued  severance to personnel  who did not become our  employees and marketing
and legal and  investment  banking fees incurred in connection  with the sale or
discontinuance of the analytics business of Glyko, Inc.

Net loss was $41.0  million  ($0.77 per share,  basic and  diluted) in the first
half of 2002 compared to a net loss of $21.7 million ($0.57 per share, basic and
diluted) in the comparable period of 2001.


Liquidity and Capital Resources

We have  financed our  operations  since our inception by the issuance of common
stock and convertible notes, equipment financing and the related interest income
earned on cash balances available for short-term investment. Since inception, we
have raised  aggregate net proceeds of  approximately  $286.7  million.  We were
initially  funded by an  investment  from GBL. We have since  raised  additional
capital from the sale of our common  stock in both public and private  offerings
and the sale of our other  securities,  all of which have since  converted  into
common stock.

                                       12


As of  June  30,  2002  our  combined  cash,  cash  equivalents  and  short-term
investments  totaled  $100.6  million,  a decrease of $30.5  million from $131.1
million at December  31,  2001.  The primary  uses of cash during the six months
ended June 30,  2002 were to finance  operations,  fund the joint  venture  with
Genzyme,  purchase leasehold  improvements and equipment and expenses associated
with the  purchase of Synapse and the pending  acquisition  of Glyko  Biomedical
Ltd.  (primarily  legal fees). The primary sources of cash during the six months
were proceeds  from  equipment  financing,  proceeds from the issuance of common
stock  pursuant to the exercise of stock  options  under the 1997 Stock Plan and
proceeds from the Employee Stock Purchase Plan.

From our inception through June 30, 2002, we have purchased  approximately $54.9
million of leasehold improvements and equipment.

As of June 30, 2002, our total research and development expenses since inception
were $144.8  million  which was  allocated  $71.7  million to  Aldurazyme,  $1.5
million to Neutralase,  $16.1 million to Aryplase, $6.8 million to Vibrilase and
$48.7  million to  research  and  development  costs not  allocated  to specific
projects or related to projects that have been abandoned.

For the six months ended June 30, 2002, our research and development  expense of
$26.6  million  was  allocated  $14.4  million to  Aldurazyme,  $1.3  million to
Neutralase, $3.3 million to Aryplase, $0.6 million to Vibrilase and $7.0 million
to research and development cost not allocated to specific projects.

For the quarter  ended June 30, 2002,  our research and  development  expense of
$13.3  million  was  allocated  $6.7  million  to  Aldurazyme,  $0.9  million to
Neutralase, $1.2 million to Aryplase, $0.2 million to Vibrilase and $4.3 million
to research and development cost not allocated to specific projects.

We expect to fund our operations with our cash, cash  equivalents and short-term
investments.  For all of 2002, we expect to expend approximately $60 million for
operations and capital expenditures. We expect our current funds to last through
2003.

We do not expect to generate  positive cash flow from  operations at least until
2004 because we expect to increase operational expenses and to increase research
and development activities, including:

    o    preclinical studies and clinical trials;

    o    process development, including quality systems for product manufacture;

    o    regulatory processes in the United States and international
         jurisdictions;

    o    clinical and commercial scale manufacturing capabilities; and

    o    expansion of sales and marketing activities.

Until we can generate  sufficient levels of cash from our operations,  we expect
to continue to fund our operations  through the expenditure of our current cash,
cash  equivalents  and short-term  investments  and  supplement  our cash,  cash
equivalents and short-term  investments  through: the sale of equity securities;
equipment-based financing; and collaborative agreements with corporate partners.

We expect that the net proceeds  from any sales of our common  stock,  equipment
financing or  collaborative  agreements  will be used to fund  operating  costs,
capital expenditures and working capital  requirements,  which may include costs
associated  with our lead  clinical  programs  including  Aldurazyme  for MPS I,
Neutralase  for heparin  reversal,  Aryplase for MPS VI and  Vibrilase  for burn
wounds. In addition,  net proceeds may also be used for research and development
of other pipeline products, building of our supporting infrastructure, and other
general corporate purposes.

There are three current arrangements that may provide us with additional sources
of financing in the future:

    o    In September 1998, we established a joint venture with Genzyme for the
         worldwide development and commercialization of Aldurazyme for the
         treatment of MPS I. We share expenses and profits from the joint
         venture equally with Genzyme. Genzyme has committed to pay us an
         additional $12.1 million upon approval of the BLA for Aldurazyme. We
         anticipate a response from the FDA in the first half of 2003 regarding
         our recently filed "rolling" BLA for Aldurazyme.

                                       13


    o    In August 2001, we signed an agreement with Acqua Wellington North
         American Equities Fund Ltd. (Acqua Wellington) for an equity investment
         in us.  The agreement allows for the purchase of up to $27.7 million of
         our common stock.  Under the terms of the agreement, we will have the
         option to request that Acqua Wellington invest in us through sales of
         registered common stock at a small discount to market price.  The
         maximum amount that we may request to be bought in any one month is
         dependent upon the market price of our stock (or an amount that can be
         mutually agreed-upon by both parties) and is referred to as the "Draw
         Down Amount."  Subject to certain conditions, Acqua Wellington is
         obligated to purchase this amount if requested to do so by us.  In
         addition, we may, at our discretion, grant a "Call Option" to Acqua
         Wellington for an additional investment in an amount up to the "Draw
         Down Amount" which Acqua Wellington may or may not choose to exercise.
         As of June 30, 2002, we may request a maximum additional aggregate
         investment of $14.2 million.  This agreement terminates on October 15,
         2002.  Under this agreement, Acqua Wellington may also purchase stock
         and receive similar terms of any other equity financing by us.

    o    Since December 2001, we entered into four separate agreements with
         General Electric Capital Corporation for secured loans totaling $6.4
         million. The notes bear interest (ranging from 9.1% to 9.33%) and are
         secured by certain manufacturing and laboratory equipment.
         Additionally, all of the agreements are subject to a covenant that
         requires us to maintain a minimum unrestricted cash balance of $25
         million. Should the unrestricted cash balance fall below $25 million,
         the note is subject to prepayment, including prepayment penalties
         ranging from 1% to 4%. We expect to enter into additional similar
         facilities as we acquire additional equipment and expand our
         facilities.


We  anticipate a need for  additional  financing to fund our future  operations,
including  the   commercialization   of  our  drug  products   currently   under
development. We cannot assure you that additional financing will be obtained or,
if obtained, will be available on reasonable terms or in a timely manner.

Our future capital requirements will depend on many factors,  including, but not
limited to:

    o    the progress, timing and scope of our preclinical studies and clinical
         trials;

    o    the time and cost necessary to obtain regulatory approvals;

    o    the time and cost necessary to develop commercial manufacturing
         processes, including quality systems and to build or acquire
         manufacturing capabilities;

    o   the time and cost necessary to respond to technological and market
        developments; and

    o   any changes made or new developments in our existing collaborative,
        licensing and other commercial relationships or any new collaborative,
        licensing and other commercial relationships that we may establish.

We plan to  continue  our policy of  investing  available  funds in  government,
investment grade and interest-bearing securities. We do not invest in derivative
financial instruments.


Critical Accounting Policies

Investment in BioMarin/Genzyme  LLC and Related  Revenue--Under the terms of our
joint venture agreement with Genzyme, Genzyme and we have each agreed to provide
50 percent of the funding for the joint venture.  All research and  development,
sales and marketing,  and other activities performed by Genzyme and us on behalf
of the joint  venture  are billed to the joint  venture at cost.  Any profits or
losses of the joint venture are shared  equally by the two parties.  We provided
$52.6  million in funding to the joint venture from  inception  through June 30,
2002.

                                       14


We account for our  investment  in the joint  venture  using the equity  method.
Accordingly,  we record a reduction in our  investment  in the joint venture for
our 50 percent  share of the loss of the joint  venture.  The  percentage of the
costs  incurred by us and billed to the joint  venture that are funded by us (50
percent),  is  recorded  as a credit  to our  equity  in the  loss of the  joint
venture.  We recognize  50% of the amount billed to the joint venture as revenue
in  accordance  with our policy to recognize  revenue for billings to the extent
that the payments for the billings were funded by Genzyme.

Impairment of  Long-Lived  Assets--We  regularly  review  long-lived  assets and
identifiable  intangibles  whenever  events or  circumstances  indicate that the
carrying  amount of such assets may not be fully  recoverable.  We evaluate  the
recoverability  of  long-lived  assets by measuring  the carrying  amount of the
assets  against the estimated  undiscounted  future cash flows  associated  with
them. At the time such evaluations  indicate that the future  undiscounted  cash
flows of certain  long-lived  assets are not  sufficient to recover the carrying
value of such assets, the assets are adjusted to their fair values.

Income taxes - We record a valuation allowance to reduce our deferred tax assets
to the amount that is more likely than not to be  realized.  We have  recorded a
full  valuation  allowance  against our net  deferred tax asset,  the  principal
amount  of  which is the tax  effect  of net  operating  loss  carryforwards  of
approximately  $61.5  million at December 31, 2001.  We have  considered  future
taxable  income and ongoing  prudent and  feasible tax  planning  strategies  in
assessing the need for the valuation  allowance.  An adjustment to the valuation
allowance  would increase or decrease  income in the period such  adjustment was
made.

                                       15



                     FACTORS THAT MAY AFFECT FUTURE RESULTS

An investment in our common stock  involves a high degree of risk. We operate in
a  dynamic  and  rapidly  changing   industry   involving   numerous  risks  and
uncertainties. The risks and uncertainties described below are not the only ones
we face. Other risks and uncertainties, including those that we do not currently
consider material,  may impair our business. If any of the risks discussed below
actually occur, our business,  financial  condition,  operating  results or cash
flows could be materially adversely affected. This could cause the trading price
of our common stock to decline, and you may lose all or part of your investment.

If we continue to incur operating  losses for a period longer than  anticipated,
we may be unable to continue our  operations at planned  levels and be forced to
reduce or discontinue operations.

We are in an early stage of development and have operated at a net loss since we
were  formed.  Since we began  operations  in March 1997,  we have been  engaged
primarily in research and development. We have no sales revenues from any of our
product  candidates.  As of June 30,  2002,  we had an  accumulated  deficit  of
approximately $189.1 million. We expect to continue to operate at a net loss for
the  foreseeable  future.  Our future  profitability  depends  on our  receiving
regulatory  approval of our product  candidates and our ability to  successfully
manufacture and market any approved  drugs,  either by ourselves or jointly with
others.  The extent of our future  losses  and the timing of  profitability  are
highly  uncertain.  If we fail to become  profitable  or are  unable to  sustain
profitability  on a  continuing  basis,  then we may be unable to  continue  our
operations.

If we fail to obtain the capital  necessary to fund our  operations,  we will be
unable to complete our product development programs.

In the  future,  we may need to raise  substantial  additional  capital  to fund
operations.  We may be unable to raise additional financing when needed due to a
variety of factors, including our financial condition, the status of our product
programs,  and the general  condition of the  financial  markets.  If we fail to
raise  additional  financing  as we need  such  funds,  we will have to delay or
terminate some or all of our product development programs.

We expect to continue to spend substantial amounts of capital for our operations
for the foreseeable  future.  The amount of capital we will need depends on many
factors, including:

    o    the progress, timing and scope of our preclinical studies and clinical
         trials;

    o    the time and cost necessary to obtain regulatory approvals;

    o    the time and cost necessary to develop commercial manufacturing
         processes, including quality systems and to build or acquire
         manufacturing capabilities;

    o    the time and cost necessary to respond to technological and market
         developments; and

    o    any changes made or new developments in our existing collaborative,
         licensing and other commercial relationships or any new collaborative,
         licensing and other commercial relationships that we may establish.

Moreover,   our  fixed  expenses  such  as  rent,  license  payments  and  other
contractual  commitments are substantial and will increase in the future.  These
fixed expenses will increase because we may enter into:

    o    additional leases for new facilities and capital equipment;

    o    additional licenses and collaborative agreements;

    o    additional contracts for consulting, maintenance and administrative
         services; and

    o    additional contracts for product manufacturing.

                                       16


We believe that our cash, cash equivalents and short term investment  securities
balances at June 30, 2002 will be  sufficient  to meet our operating and capital
requirements  through  2003.  These  estimates  are  based  on  assumptions  and
estimates,  which may prove to be wrong.  As a result,  we may need or choose to
obtain additional financing during that time.

If we fail to obtain regulatory approval to commercially manufacture or sell any
of our future drug  products,  or if  approval is delayed,  we will be unable to
generate  revenue from the sale of our products,  our  potential for  generating
positive  cash flow will be  diminished  and the capital  necessary  to fund our
operations will be increased.

We must obtain regulatory approval before marketing or selling our drug products
in the U.S.  and in  foreign  jurisdictions.  In the U.S.,  we must  obtain  FDA
approval for each drug that we intend to commercialize. The FDA approval process
is typically  lengthy and  expensive,  and approval is never  certain.  Products
distributed  abroad are also subject to foreign government  regulation.  None of
our drug products has received regulatory  approval to be commercially  marketed
and sold. If we fail to obtain regulatory approval,  we will be unable to market
and  sell  our  drug  products.  Because  of  the  risks  and  uncertainties  in
biopharmaceutical  development,  our drug  products  could take a  significantly
longer  time to gain  regulatory  approval  than we  expect  or may  never  gain
approval. If regulatory approval is delayed, our management's  credibility,  and
the value of our company and our operating  results will be adversely  affected.
Additionally,  we will be  unable  to  generate  revenue  from  the  sale of our
products, our potential for generating positive cash flow will be diminished and
the capital necessary to fund our operations will be increased.

To obtain regulatory  approval to market our products,  preclinical  studies and
costly and  lengthy  clinical  trials will be  required,  and the results of the
studies and trials are highly uncertain.

As part of the regulatory approval process, we must conduct, at our own expense,
preclinical  studies in the laboratory on animals and clinical  trials on humans
for each drug product.  We expect the number of preclinical studies and clinical
trials that the regulatory  authorities  will require will vary depending on the
drug product,  the disease or condition  the drug is being  developed to address
and  regulations  applicable  to the  particular  drug.  We may need to  perform
multiple  preclinical studies using various doses and formulations before we can
begin clinical trials, which could result in delays in our ability to market any
of our drug  products.  Furthermore,  even if we  obtain  favorable  results  in
preclinical  studies on  animals,  the  results  in humans may be  significantly
different.

After we have conducted preclinical studies in animals, we must demonstrate that
our drug products are safe and  efficacious for use on the target human patients
in  order to  receive  regulatory  approval  for  commercial  sale.  Adverse  or
inconclusive  clinical results would stop us from filing for regulatory approval
of our drug products.  Additional factors that can cause delay or termination of
our clinical trials include:

    o    slow or insufficient patient enrollment;

    o    slow recruitment of, and completion of necessary institutional
         approvals at clinical sites;

    o    longer treatment time required to demonstrate efficacy;

    o    lack of sufficient supplies of the product candidate;

    o    adverse medical events or side effects in treated patients;

    o    lack of effectiveness of the product candidate being tested; and

    o    regulatory requests for additional clinical trials.

Typically,  if a drug product is intended to treat a chronic disease,  as is the
case with most of the product candidates we are developing,  safety and efficacy
data must be gathered over an extended period of time,  which can range from six
months to three years or more.

                                       17


In May 2001, we completed a 24-month patient evaluation for the initial clinical
trial of our lead drug product,  Aldurazyme,  for the treatment of MPS I. Two of
the  original  ten  patients  enrolled in this trial died in 2000.  One of these
patients  received 103 weeks of Aldurazyme  treatment and the other received 137
weeks of treatment.  One of the original  forty-five  patients who completed the
Phase 3 clinical trial died after 16 weeks of the Phase 3 extension  study.  One
patient  treated  under a  single-patient  use protocol  died after 131 weeks of
Aldurazyme   treatment.   Based  on  medical  data   collected   from   clinical
investigative  sites,  none of these cases  directly  implicated  treatment with
Aldurazyme as the cause of death. If cases of patient complications or death are
ultimately  attributed to Aldurazyme,  our chances of commercializing  this drug
would be seriously compromised.

The fast track designation for our product candidates may not actually lead to a
faster  review  process  and a delay in the review  process or  approval  of our
products  will delay revenue from the sale of the products and will increase the
capital necessary to fund these programs.

Aldurazyme  and Aryplase have obtained fast track  designations,  which provides
certain advantageous procedures and guidelines with respect to the review by the
FDA of the BLA for these products and which may result in BioMarin's  receipt of
an  initial  response  from the FDA  earlier  than  would be  received  if these
products had not received a fast track  designation.  However,  these procedures
and  guidelines do not guarantee that the total review process will be faster or
that approval will be obtained,  if at all, earlier than if the products had not
received fast track  designation.  If the review  process or approval for either
product is delayed,  realizing  revenue  from the sale of the  products  will be
delayed and the capital necessary to fund these programs will be increased.


We will not be able to sell our products if we fail to comply with manufacturing
regulations.

Before we can begin  commercial  manufacture  of our  products,  we must  obtain
regulatory  approval of our  manufacturing  facility and  process.  In addition,
manufacture  of our drug  products  must  comply  with the  FDA's  current  Good
Manufacturing   Practices   regulations,   commonly  known  as  cGMP.  The  cGMP
regulations  govern quality control and  documentation  policies and procedures.
Our manufacturing  facilities are continuously subject to inspection by the FDA,
the State of California  and foreign  regulatory  authorities,  before and after
product approval. Our Galli Drive and our Bel Marin Keys Boulevard manufacturing
facilities  have been  inspected  and  licensed by the State of  California  for
clinical pharmaceutical manufacture. Due to the complexity of the processes used
to manufacture our products,  we may be unable to pass federal or  international
regulatory  inspections in a cost  effective  manner.  For the same reason,  any
potential third party  manufacturer of our drug products may be unable to comply
with cGMP regulations in a cost effective manner.

We must pass Federal,  state and European  regulatory  inspections,  and we must
manufacture process  qualification  batches to final  specifications  under cGMP
controls for each of our drug products before the marketing  applications can be
approved.   Although  we  have  completed  process   qualification  batches  for
Aldurazyme,  these batches may be rejected by the regulatory authorities, and we
may be unable to  manufacture  the process  qualification  batches for our other
products or pass the inspections in a timely manner, if at all.

If we fail to obtain  orphan  drug  exclusivity  for some of our  products,  our
competitors may sell products to treat the same conditions and our revenues will
be reduced.

As part of our  business  strategy,  we intend to develop some drugs that may be
eligible  for FDA and  European  Community  orphan drug  designation.  Under the
Orphan  Drug Act,  the FDA may  designate a product as an orphan drug if it is a
drug  intended  to treat a rare  disease  or  condition,  defined  as a  patient
population  of less than  200,000 in the United  States.  The company that first
obtains FDA  approval  for a  designated  orphan  drug for a given rare  disease
receives marketing exclusivity for use of that drug for the stated condition for
a period of seven years.  However,  different drugs can be approved for the same
condition.  Similar  regulations are available in the European  Community with a
ten-year period of market exclusivity.

Because  the  extent and scope of patent  protection  for our drug  products  is
limited, orphan drug designation is particularly important for our products that
are eligible  for orphan drug  designation.  We plan to rely on the  exclusivity
period under the orphan drug designation to maintain a competitive  position. If
we do not obtain orphan drug  exclusivity  for our drug  products,  which do not
have patent protection, our competitors may then sell the same drug to treat the
same condition.

Even though we have obtained orphan drug  designation for certain of our product
candidates and even if we obtain orphan drug  designation  for other products we
develop,  due to the  uncertainties  associated with  developing  pharmaceutical
products,  we may not be the first to obtain  marketing  approval for any orphan
indication or, if we are the first, that exclusivity  would effectively  protect
the product  from  competition.  Orphan drug  designation  neither  shortens the
development  time or  regulatory  review  time of a drug nor  gives the drug any
advantage in the regulatory review or approval process.

                                       18


Because the target patient  populations  for some of our products are small,  we
must achieve significant market share and obtain high per patient prices for our
products to achieve profitability.

Two of our lead drug candidates,  Aldurazyme and Aryplase,  target diseases with
small  patient  populations.  As  a  result,  our  per-patient  prices  must  be
relatively  high  in  order  to  recover  our  development   costs  and  achieve
profitability.  Aldurazyme  targets  patients  with MPS I and  Aryplase  targets
patients with MPS VI. We estimate that there are  approximately  3,400  patients
with MPS I and 1,100  patients  with MPS VI in the developed  world.  We believe
that we will need to market  worldwide to achieve  significant  market share. In
addition,  we are developing other drug candidates to treat conditions,  such as
other genetic diseases and serious burn wounds, with small patient  populations.
Due to the expected costs of treatment for  Aldurazyme  and Aryplase,  we may be
unable to obtain  sufficient  market share for our drug products at a price high
enough to justify our product development efforts.

If we fail to obtain an adequate level of reimbursement for our drug products by
third-party  payers, the sales of our drugs would be adversely affected or there
may be no commercially viable markets for our products.

The  course  of  treatment  for  patients  with MPS I using  Aldurazyme  and for
patients  with MPS VI using  Aryplase  is expected  to be  expensive.  We expect
patients  to need  treatment  throughout  their  lifetimes.  We expect that most
families  of  patients  will  not  be  capable  of  paying  for  this  treatment
themselves.  There  will be no  commercially  viable  market for  Aldurazyme  or
Aryplase without  reimbursement from third-party payers.  Additionally,  even if
there is a commercially  viable market,  if the level of  reimbursement is below
our expectations, our revenue and gross margins will be adversely effected.

Third-party  payers,  such  as  government  or  private  health  care  insurers,
carefully  review  and  increasingly  challenge  the prices  charged  for drugs.
Reimbursement  rates from private  companies vary  depending on the  third-party
payer,  the  insurance  plan  and  other  factors.   Reimbursement   systems  in
international   markets  vary  significantly  by  country  and  by  region,  and
reimbursement approvals must be obtained on a country-by-country basis.

We currently have no expertise obtaining reimbursement. We expect to rely on the
expertise of our joint venture partner Genzyme to obtain  reimbursement  for the
costs of Aldurazyme.  In addition, we will need to develop our own reimbursement
expertise for future drug candidates  unless we enter into  collaborations  with
other  companies  with  the  necessary  expertise.  We will  not  know  what the
reimbursement  rates  will be until we are ready to market  the  product  and we
actually  negotiate  the  rates.  If we are unable to obtain  sufficiently  high
reimbursement  rates, our products may not be commercially  viable or our future
revenues and gross margins may be adversely affected.

We expect that, in the future,  reimbursement  will be  increasingly  restricted
both in the United States and  internationally.  The  escalating  cost of health
care has led to increased  pressure on the health care industry to reduce costs.
Governmental  and private  third-party  payers have proposed health care reforms
and cost reductions. A number of federal and state proposals to control the cost
of health  care,  including  the cost of drug  treatments  have been made in the
United States.  In some foreign  markets,  the  government  controls the pricing
which would affect the profitability of drugs.  Current  government  regulations
and possible future legislation  regarding health care may affect  reimbursement
for medical treatment by third-party  payers,  which may render our products not
commercially  viable or may  adversely  affect  our  future  revenues  and gross
margins.

If we are unable to protect our  proprietary  technology,  we may not be able to
compete as effectively.

Where  appropriate,  we  seek  patent  protection  for  certain  aspects  of our
technology.  Patent  protection  may not be available for some of the enzymes we
are  developing.  If we must spend  significant  time and money  protecting  our
patents,  designing around patents held by others or licensing,  for large fees,
patents or other proprietary  rights held by others,  our business and financial
prospects may be harmed.

The patent  positions of biotechnology  products are complex and uncertain.  The
scope and extent of patent  protection for some of our products are particularly
uncertain  because key  information on some of the enzymes we are developing has
existed in the public domain for many years.  Other  parties have  published the
structure of the enzymes,  the methods for purifying or producing the enzymes or
the methods of treatment. The composition and genetic sequences of animal and/or
human versions of many of our enzymes have been published and are believed to be
in the public domain. The composition and genetic sequences of other MPS enzymes
that we intend to develop as products have also been  published.  Publication of
this  information may prevent us from obtaining  composition-of-matter  patents,
which are  generally  believed to offer the  strongest  patent  protection.  For
enzymes with no prospect of broad composition-of-matter  patents, other forms of
patent  protection  or orphan  drug  status may  provide  us with a  competitive
advantage.  As a result of these  uncertainties,  investors  should  not rely on
patents as a means of protecting our product candidates, including Aldurazyme.

                                       19


We own or license  patents  and patent  applications  to certain of our  product
candidates.  However,  these patents and patent  applications  do not ensure the
protection of our intellectual property for a number of other reasons, including
the following:

    o    We do not know whether our patent applications will result in issued
         patents. For example, we may not have developed a method for treating
         a disease before others developed similar methods.

    o    Competitors may interfere with our patent process in a variety of ways.
         Competitors may claim that they invented the claimed invention prior to
         us.  Competitors may also claim that we are infringing on their patents
         and therefore cannot practice our technology as claimed under our
         patent. Competitors may also contest our patents by showing the patent
         examiner that the invention was not original, was not novel or was
         obvious.  In litigation, a competitor could claim that our issued
         patents are not valid for a number of reasons.  If a court agrees, we
         would lose that patent.  As a company, we have no meaningful experience
         with competitors interfering with our patents or patent applications.

    o    Enforcing patents is expensive and may absorb significant time of our
         management. Management would spend less time and resources on
         developing products, which could increase our research and development
         expense and delay product programs.

    o    Receipt of a patent may not provide much practical protection. If we
         receive a patent with a narrow scope, then it will be easier for
         competitors to design products that do not infringe on our patent.

In addition,  competitors also seek patent protection for their technology.  Due
to the number of patents in our field of  technology,  we cannot be assured that
we do not  infringe  on those  patents or that we will not  infringe  on patents
granted in the future.  If a patent  holder  believes  our product  infringes on
their  patent,  the  patent  holder may sue us even if we have  received  patent
protection  for our  technology.  If someone  else  claims we  infringe on their
technology, we would face a number of issues, including the following:

    o    Defending a lawsuit takes significant time and can be very expensive.

    o    If the court decides that our product infringes on the competitor's
         patent, we may have to pay substantial damages for past infringement.

    o    The court may prohibit us from selling or licensing the product unless
         the patent holder licenses the patent to us. The patent holder is not
         required to grant us a license. If a license is available, we may have
         to pay substantial royalties or grant crosslicenses to our patents.

    o    Redesigning our product so it does not infringe may not be possible or
         could require substantial funds and time.

It is also unclear  whether our trade  secrets will provide  useful  protection.
While we use reasonable  efforts to protect our trade secrets,  our employees or
consultants  may  unintentionally  or  willfully  disclose  our  information  to
competitors. Enforcing a claim that someone else illegally obtained and is using
our trade secrets, like patent litigation,  is expensive and time consuming, and
the outcome is unpredictable.  In addition, courts outside the United States are
sometimes  less  willing  to  protect  trade  secrets.   Our   competitors   may
independently develop equivalent knowledge, methods and know-how.

                                       20


We may  also  support  and  collaborate  in  research  conducted  by  government
organizations  or by  universities.  We cannot guarantee that we will be able to
acquire  any  exclusive  rights to  technology  or products  derived  from these
collaborations.  If we do not  obtain  required  licenses  or  rights,  we could
encounter delays in product  development while we attempt to design around other
patents or even be prohibited from developing, manufacturing or selling products
requiring these licenses. There is also a risk that disputes may arise as to the
rights to technology or products developed in collaboration with other parties.

The United States Patent and Trademark Office has issued two patents that relate
to  (alpha)-L-iduronidase.  If we are not able to  successfully  challenge these
patents,  we may be  prevented  from  producing  Aldurazyme  unless and until we
obtain a license.

The United  States  Patent and  Trademark  Office  has issued two  patents  that
include  composition  of  matter  and  method  of  use  claims  for  recombinant
(alpha)-L-iduronidase.   Our  lead  drug  product,   Aldurazyme,   is  based  on
recombinant (alpha)-L-iduronidase.  We believe that these patents are invalid on
a number  of  grounds.  A  corresponding  patent  application  was  filed in the
European   Patent  Office   claiming   composition  of  matter  for  recombinant
(alpha)-L-iduronidase,  and it was  rejected  over prior art and  withdrawn  and
cannot be re-filed.  Nonetheless, under U.S. law, issued patents are entitled to
a  presumption  of  validity,  and our  challenges  to the U.S.  patents  may be
unsuccessful.  Even if we are successful,  challenging  the U.S.  patents may be
expensive,  require our management to devote significant time to this effort and
may delay commercialization of Aldurazyme in the United States.

The patent  holder has granted an  exclusive  license for  products  relating to
these  patents  to one of our  competitors.  If we are  unable  to  successfully
challenge  the  patents,  we may be unable to produce  Aldurazyme  in the United
States unless we can obtain a sublicense from the current licensee.  The current
licensee  is not  required  to  grant us a  license  and  even if a  license  is
available,  we may have to pay substantial  license fees,  which could adversely
affect our business and operating results.

If our joint  venture  with  Genzyme  were  terminated,  we could be barred from
commercializing  Aldurazyme or our ability to commercialize  Aldurazyme would be
delayed or diminished.

We are relying on Genzyme to apply the  expertise it has  developed  through the
launch and sale of other  enzyme-based  products to the marketing of our initial
drug product,  Aldurazyme. We have no experience selling, marketing or obtaining
reimbursement for pharmaceutical products. In addition, without Genzyme we would
be required to pursue  foreign  regulatory  approvals.  We have no experience in
seeking foreign regulatory approvals.

Either  BioMarin  or Genzyme  may  terminate  the joint  venture  for  specified
reasons,  including if the other party is in material breach of the agreement or
has  experienced a change of control or has declared  bankruptcy  and also is in
breach of the  agreement.  Although  BioMarin is not  currently in breach of the
joint  venture  agreement and we believe that Genzyme is not currently in breach
of the joint venture  agreement,  there is a risk that either party could breach
the agreement in the future.  Either party may also terminate the agreement upon
one-year prior written notice for any reason.  Furthermore, we may terminate the
joint venture if Genzyme fails to fulfill its  contractual  obligation to pay us
$12.1 million in cash upon the approval of the BLA for Aldurazyme.

If the joint venture is terminated for breach, the non-breaching  party would be
granted,   exclusively,  all  of  the  rights  to  Aldurazyme  and  any  related
intellectual property and regulatory approvals and would be obligated to buy out
the breaching  party's  interest in the joint  venture.  If we are the breaching
party,  we would  lose our rights to  Aldurazyme  and the  related  intellectual
property and regulatory  approvals.  If the joint venture is terminated  without
cause,  the  non-terminating  party would have the option,  exercisable  for one
year,  to buy out the  terminating  party's  interest  in the joint  venture and
obtain all rights to Aldurazyme exclusively.  In the event of termination of the
buy out option without exercise by the non-terminating party as described above,
all right and title to Aldurazyme is to be sold to the highest bidder,  with the
proceeds to be split equally between Genzyme and us.

If the joint venture is  terminated  by either party because the other  declared
bankruptcy and is also in breach of the agreement,  the terminating  party would
be  obligated  to buy out the other and would  obtain all  rights to  Aldurazyme
exclusively.  If the joint  venture is  terminated  by a party because the other
party  experienced a change of control,  the terminating  party shall notify the
other party, the offeree, of its intent to buy out the offeree's interest in the
joint  venture  for a  stated  amount  set  by  the  terminating  party  at  its
discretion.  The offeree must then either  accept this offer or agree to buy the
terminating party's interest in the joint venture on those same terms. The party
who buys out the other would then have exclusive rights to Aldurazyme.

                                       21


If we were obligated,  or given the option, to buy out Genzyme's interest in the
joint  venture,  and  gain  exclusive  rights  to  Aldurazyme,  we may not  have
sufficient  funds to do so and we may not be able to obtain the  financing to do
so.  If we fail to buy out  Genzyme's  interest  we may be held in breach of the
agreement  and may lose any claim to the rights to  Aldurazyme  and the  related
intellectual  property and regulatory  approvals.  We would then  effectively be
prohibited from developing and commercializing the product.

Termination  of the joint  venture in which we retain  the rights to  Aldurazyme
could  cause us  significant  delays in  product  launch in the  United  States,
difficulties  in obtaining  third-party  reimbursement  and delays or failure to
obtain  foreign  regulatory  approval,  any of which could hurt our business and
results of operations.  Since Genzyme funds 50% of the joint venture's operating
expenses, the termination of the joint venture would double our financial burden
and reduce the funds available to us for other product programs.

If we are unable to manufacture  our drug products in sufficient  quantities and
at  acceptable  cost,  we may be unable to meet demand for our products and lose
potential revenues or have reduced margins.

Although we have successfully manufactured Aldurazyme at commercial scale within
our cost parameters,  due to the complexity of manufacturing our products we may
not  be  able  to  manufacture  any  other  drug  product  successfully  with  a
commercially  viable  process  or at a  scale  large  enough  to  support  their
respective commercial markets or at acceptable margins.

Our  manufacturing  processes  may  not  meet  initial  expectations  and we may
encounter  problems with any of the following  measurements of performance if we
attempt to increase the scale or size or improve the commercial viability of our
manufacturing processes:

    o    design, construction and qualification of manufacturing facilities that
         meet regulatory requirements;

    o    schedule;

    o    reproducibility;

    o    production yields;

    o    purity;

    o    costs;

    o    quality control and assurance systems;

    o    shortages of qualified personnel; and

    o    compliance with regulatory requirements.

Improvements in manufacturing  processes typically are very difficult to achieve
and are  often  very  expensive  and may  require  extended  periods  of time to
develop. If we contract for manufacturing services with an unproven process, our
contractor is subject to the same  uncertainties,  high standards and regulatory
controls.

The  availability  of suitable  contract  manufacturing  at scheduled or optimum
times is not  certain.  The  cost of  contract  manufacturing  is  greater  than
internal  manufacturing  and therefore our  manufacturing  processes  must be of
higher productivity to yield equivalent margins.

The manufacture of Neutralase  involves the fermentation of a bacterial species.
We have never used a  bacterial  production  process for the  production  of any
commercial product.  IBEX Technologies Inc., from which we acquired  Neutralase,
had contracted  with a third party for the manufacture of the Neutralase used in
prior  clinical  trials.  We have  also  contracted  with a third  party for the
manufacture of additional quantities of Neutralase.

We have built-out  approximately 51,800 square feet at our Novato facilities for
manufacturing  capability for Aldurazyme and Aryplase  including related quality
control laboratories,  materials  capabilities,  and support areas. We expect to
add additional  capabilities in stages over time, which could create  additional
operational complexity and challenges.  We expect that the manufacturing process
of all of our new drug products, including Aryplase and Neutralase, will require
significant  time and resources before we can begin to manufacture them (or have
them manufactured by third parties) in commercial quantity at acceptable cost.

                                       22


In  order to  achieve  our  product  cost  targets,  we must  develop  efficient
manufacturing processes either by:

    o    improving the product yield from our current cell lines, colonies of
         cells which have a common genetic makeup;

    o    improving the manufacturing processes licensed from others; or

    o    developing more efficient, lower cost recombinant cell lines and
         production processes.

A recombinant cell line is a cell line with foreign DNA inserted that is used to
produce an enzyme or other  protein that it would not have  otherwise  produced.
The  development of a stable,  high production cell line for any given enzyme is
difficult, expensive and unpredictable and may not result in adequate yields. In
addition, the development of protein purification processes is difficult and may
not produce the high purity required with acceptable  yield and costs or may not
result in  adequate  shelf-lives  of the final  products.  If we are not able to
develop  efficient  manufacturing  processes,  the  investment in  manufacturing
capacity sufficient to satisfy market demand will be much greater and will place
heavy  financial  demands upon us. If we do not achieve our  manufacturing  cost
targets,  we will have lower  margins and reduced  profitability  in  commercial
production and larger losses in manufacturing start-up phases.

If we are unable to create marketing and  distribution  capabilities or to enter
into  agreements  with third parties to do so, our ability to generate  revenues
will be diminished.

If we  cannot  expand  capabilities  either  by  developing  our own  sales  and
marketing  organization or by entering into  agreements  with others,  we may be
unable to successfully sell our products. We believe that developing an internal
sales  and  distribution  capability  will  be  expensive  and  time  consuming.
Alternatively,  we may enter into  agreements  with third  parties to market our
products.  For  example,  under our  joint  venture  with  Genzyme,  Genzyme  is
responsible  for marketing and  distributing  Aldurazyme.  However,  these third
parties may not be capable of successfully selling any of our drug products.

With our  acquisition  of  Neutralase  from IBEX  Technologies  Inc., we have an
enzyme product that has a significantly larger potential patient population than
Aldurazyme  and  Aryplase  and will be  marketed  and sold to  different  target
audiences with different therapeutic and financial  requirements and needs. As a
result,  we  will  be  competing  with  other   pharmaceutical   companies  with
experienced  and  well-funded  sales and marketing  operations  targeting  these
specific  physician and institutional  audiences.  We may not be able to develop
our own sales and  marketing  force at all,  or of a size that would allow us to
compete  with  these  other  companies.  If we elect to enter  into  third-party
marketing and  distribution  agreements in order to sell into these markets,  we
may not be able to enter into these  agreements on acceptable  terms, if at all.
If we cannot compete  effectively in these specific  physician and institutional
markets, it would adversely affect sales of Neutralase.

If we fail to compete  successfully  with  respect to product  sales,  we may be
unable to  generate  sufficient  sales to recover  our  expenses  related to the
development of a product program or to justify continued marketing of a product.

Our  competitors  may develop,  manufacture  and market  products  that are more
effective or less expensive than ours. They may also obtain regulatory approvals
for their products faster than we can obtain them (including those products with
orphan drug  designation)  or  commercialize  their products  before we do. With
respect  to  Aldurazyme   and   Aryplase,   if  our   competitors   successfully
commercialize a product that treats MPS I or MPS VI, respectively, before we do,
we may  effectively be precluded from developing a product to treat that disease
because the patient  populations  of the  diseases  are so small.  If one of our
competitors gets orphan drug  exclusivity,  we could be precluded from marketing
our  version for seven years in the U.S.  and ten years in the  European  Union.
However,  different drugs can be approved for the same  condition.  If we do not
compete  successfully,  we may be unable to generate sufficient sales to recover
our  expenses  related  to the  development  of a product  program or to justify
continued marketing of a product.

                                       23


If we fail to compete  successfully with respect to acquisitions,  joint venture
and other  collaboration  opportunities,  we may be  limited  in our  ability to
develop new products and to continue to expand our product pipeline.

Our competitors compete with us to attract organizations for acquisitions, joint
ventures,  licensing  arrangements or other collaborations.  To date, several of
our  product  programs  have been  acquired  through  acquisitions,  such as the
programs  acquired  from IBEX and Synapse,  and several of our product  programs
have been developed  through  licensing or collaborative  arrangements,  such as
Aldurazyme and Vibrilase.  These  collaborations  include licensing  proprietary
technology from, and other relationships with academic research institutions. If
our  competitors  successfully  enter into  partnering  arrangements  or license
agreements with academic research  institutions,  we will then be precluded from
pursuing  those specific  opportunities.  Since each of these  opportunities  is
unique,  we may not be able to find a  substitute.  Several  pharmaceutical  and
biotechnology  companies  have already  established  themselves  in the field of
enzyme  therapeutics,  including  Genzyme,  our  joint  venture  partner.  These
companies have already begun many drug development  programs,  some of which may
target  diseases  that we are also  targeting,  and have  already  entered  into
partnering  and  licensing  arrangements  with academic  research  institutions,
reducing the pool of available opportunities.

Universities and public and private  research  institutions are also competitors
with BioMarin.  While these  organizations  primarily have  educational or basic
research objectives, they may develop proprietary technology and acquire patents
that we may need for the  development of our drug  products.  We will attempt to
license this  proprietary  technology,  if available.  These licenses may not be
available  to us on  acceptable  terms,  if at all.  If we are unable to compete
successfully with respect to acquisitions, joint venture and other collaboration
opportunities,  we may be limited in our ability to develop new  products and to
continue to expand out product pipeline.

If we do not  achieve  our  projected  development  goals in the time  frames we
announce and expect,  the  commercialization  of our products may be delayed and
the  credibility of our  management may be adversely  affected and, as a result,
our stock price may decline.

For planning  purposes,  we estimate the timing of the accomplishment of various
scientific,  clinical,  regulatory and other product development goals, which we
sometimes refer to as milestones.  These milestones may include the commencement
or completion of scientific  studies and clinical  trials and the  submission of
regulatory filings.  From time to time, we publicly announce the expected timing
of some of these  milestones.  All of these milestones are based on a variety of
assumptions.  The  actual  timing  of these  milestones  can  vary  dramatically
compared to our estimates,  in many cases for reasons beyond our control.  If we
do not meet these milestones as publicly announced, the commercialization of our
products may be delayed and the  credibility  of our management may be adversely
affected and, as a result, our stock price may decline.

If we fail to manage  our growth or fail to recruit  and retain  personnel,  our
product development programs may be delayed.

Our rapid growth has strained our managerial,  operational,  financial and other
resources.  We expect  this growth to  continue.  We have  entered  into a joint
venture with Genzyme.  If we receive FDA and/or foreign  government  approval to
market  Aldurazyme,  the joint  venture  will be required  to devote  additional
resources to support the commercialization of Aldurazyme.

To manage expansion effectively,  we need to continue to develop and improve our
research and development  capabilities,  manufacturing  and quality  capacities,
sales and  marketing  capabilities  and financial  and  administrative  systems.
BioMarin's staff,  financial resources,  systems,  procedures or controls may be
inadequate to support our  operations and our management may be unable to manage
successfully future market opportunities or our relationships with customers and
other third parties.

Our future growth and success depend on our ability to recruit,  retain,  manage
and motivate our employees. The loss of key scientific, technical and managerial
personnel may delay or otherwise harm our product development programs. Any harm
to our research and development programs would harm our business and prospects.

                                       24


Because of the specialized  scientific and managerial nature of our business, we
rely  heavily  on our  ability  to  attract  and  retain  qualified  scientific,
technical and managerial personnel. In particular, the loss of Fredric D. Price,
our Chairman and Chief Executive  Officer,  or Emil D. Kakkis,  M.D., Ph.D., our
Senior Vice President of Scientific Affairs or Christopher M. Starr,  Ph.D., our
Senior Vice President for Research and  Development,  could be detrimental to us
if we cannot recruit suitable  replacements in a timely manner. While Mr. Price,
Dr. Kakkis and Dr. Starr are parties to employment agreements with us, we cannot
guarantee  that they will remain  employed  with us in the future.  In addition,
these  agreements  do not restrict  their ability to compete with us after their
employment  is  terminated.  The  competition  for  qualified  personnel  in the
biopharmaceutical  field is intense. Due to this intense competition,  we may be
unable to continue to attract and retain qualified  personnel  necessary for the
development of our business.

Changes in methods of treatment of disease could reduce demand for our products.

Even if our drug products are approved, doctors must use treatments that require
using those products. If doctors elect a different course of treatment from that
which includes our drug products, this decision would reduce demand for our drug
products.

Examples  include the potential use in the future of effective  gene therapy for
the treatment of genetic diseases.  The use of gene therapy could  theoretically
reduce or  eliminate  the use of enzyme  replacement  therapy  in MPS  diseases.
Sometimes,  this change in treatment method can be caused by the introduction of
other  companies'  products or the  development of new  technologies or surgical
procedures  which may not directly  compete with ours, but which have the effect
of changing how doctors  decide to treat a disease.  For example,  Neutralase is
being  developed  for heparin  reversal in coronary  artery  bypass graft (CABG)
surgery. It is possible that alternative  non-surgical methods of treating heart
disease could be developed.  If so, then the demand for Neutralase  would likely
decrease.

If product liability lawsuits are successfully  brought against us, we may incur
substantial liabilities.

We are exposed to the potential product liability risks inherent in the testing,
manufacturing and marketing of human  pharmaceuticals.  The BioMarin/Genzyme LLC
maintains product liability insurance for our clinical trials of Aldurazyme with
aggregate  loss  limits of $5.0  million.  We have  obtained  insurance  against
product  liability  lawsuits for the clinical  trials for Aryplase and Vibrilase
with  aggregate  loss  limits of $8.0  million.  Pharmaceutical  companies  must
balance the cost of insurance  with the level of coverage  based on estimates of
potential  liability.  Historically,  the potential  liability  associated  with
product liability lawsuits for pharmaceutical  products has been  unpredictable.
Although we believe that our current  insurance is a reasonable  estimate of our
potential  liability and represents a commercially  reasonable  balancing of the
level of coverage as compared to the cost of the insurance, we may be subject to
claims in connection with our current  clinical trials for Aldurazyme,  Aryplase
and Vibrilase for which the joint  venture's or our insurance  coverages are not
adequate.

If  Aldurazyme,  Aryplase  or  Vibrilase  receives  FDA  approval,  the  product
liability  insurance  the joint  venture or we will need to obtain in connection
with  the  commercial  sales  of  Aldurazyme,   Aryplase  or  Vibrilase  may  be
unavailable in meaningful amounts or at a reasonable cost. In addition, while we
take, and continue to take, what we believe are appropriate precautions,  we may
be unable to avoid  significant  liability if any product  liability  lawsuit is
brought  against us. If we are the  subject of a  successful  product  liability
claim that exceeds the limits of any insurance  coverage we obtain, we may incur
substantial liabilities that would adversely affect our earnings and require the
commitment  of capital  resources  that might  otherwise  be  available  for the
development and commercialization of our product programs.

Our stock price may be volatile,  and an  investment in our stock could suffer a
decline in value.

Our  valuation  and stock price since the beginning of trading after our initial
public  offering  have had no meaningful  relationship  to current or historical
earnings,  asset values, book value or many other criteria based on conventional
measures of stock value. The market price of our common stock will fluctuate due
to factors including:

    o    progress of Aldurazyme, Neutralase, Aryplase and our other lead drug
         products through the regulatory process, especially regulatory actions
         in the United States related to Aldurazyme;

    o    results of clinical trials, announcements of technological innovations
         or new products by us or our competitors;

    o    government regulatory action affecting our drug products or our
         competitors' drug products in both the United States and foreign
         countries;

                                       25


    o    developments or disputes concerning patent or proprietary rights;

    o    general market conditions and fluctuations for the emerging growth and
         biopharmaceutical market sectors;

    o    economic conditions in the United States or abroad;

    o    actual or anticipated fluctuations in our operating results;

    o    broad market fluctuations in the United States or in Europe, which may
         cause the market price of our common stock to fluctuate; and

    o    changes in company assessments or financial estimates by securities
         analysts.

In addition, the value of our common stock may fluctuate because it is listed on
both the Nasdaq National Market and the Swiss Exchange's SWX New Market. Listing
on both exchanges may increase stock price volatility due to:

    o    trading in different time zones;

    o    different ability to buy or sell our stock;

    o    different market conditions in different capital markets; and

    o    different trading volume.

In the past,  following  periods of large price  declines  in the public  market
price of a company's  securities,  securities class action  litigation has often
been  initiated  against that  company.  Litigation of this type could result in
substantial costs and diversion of management's  attention and resources,  which
would hurt our business.  Any adverse  determination  in  litigation  could also
subject us to significant liabilities.

If our officers and directors elect to act together, they may be able to control
our  management  and  operations,   acting  in  their  best  interests  and  not
necessarily those of other stockholders.

Our directors and officers (and their respective affiliates, not including Glyko
Biomedical  Ltd.)  control  approximately  3% of the  outstanding  shares of our
common stock. Glyko Biomedical Ltd. owns approximately  21.3% of the outstanding
shares of our capital stock. The president and chief executive  officer of Glyko
Biomedical and a significant shareholder of Glyko Biomedical serve as two of our
directors. As a result, due to their concentration of stock ownership, directors
and officers,  if they act together,  may be able to control our  management and
operations,  and may be able to prevail on all matters  requiring a  stockholder
vote including:

    o    The election of all directors;

    o    The amendment of charter documents or the approval of a merger, sale of
         assets or other major corporate transactions; and

    o    The defeat of any non-negotiated takeover attempt that might otherwise
         benefit the public stockholders.

Anti-takeover  provisions in our charter  documents  and under  Delaware law may
make an  acquisition  of us, which may be beneficial to our  stockholders,  more
difficult.

We are incorporated in Delaware.  Certain  anti-takeover  provisions of Delaware
law and our  charter  documents  as  currently  in  effect  may make a change in
control of our  company  more  difficult,  even if a change in control  would be
beneficial to the stockholders.  Our anti-takeover provisions include provisions
in the certificate of incorporation  providing that  stockholders'  meetings may
only be called by the board of directors and a provision in the bylaws providing
that the stockholders may not take action by written consent.  Additionally, our
board of  directors  has the  authority to issue  1,000,000  shares of preferred
stock and to determine  the terms of those  shares of stock  without any further
action by the  stockholders.  The  rights of  holders  of our  common  stock are
subject to the rights of the holders of any preferred  stock that may be issued.
The issuance of preferred  stock could make it more  difficult for a third party
to  acquire a  majority  of our  outstanding  voting  stock.  Delaware  law also
prohibits  corporations from engaging in a business combination with any holders
of 15% or more of their  capital  stock  until the holder has held the stock for
three years unless, among other  possibilities,  the board of directors approves
the  transaction.  Our board of directors  may use these  provisions  to prevent
changes in the management  and control of our company.  Also,  under  applicable
Delaware law, our board of directors may adopt additional anti-takeover measures
in the future.

                                       26


Item 3.  Quantitative and Qualitative Disclosure about Market Risk

Our exposure to market risk for changes in interest  rates relates  primarily to
our investment portfolio.  By policy, we place our investments with highly rated
credit  issuers and limit the amount of credit  exposure  to any one issuer.  As
stated  in our  policy,  we  seek  to  improve  the  safety  and  likelihood  of
preservation of our invested funds by limiting  default risk and market risk. We
have no investments  denominated in foreign country currencies and therefore are
not subject to foreign exchange risk.

We mitigate  default risk by investing in high credit quality  securities and by
positioning our portfolio to respond appropriately to a significant reduction in
a credit rating of any investment  issuer or guarantor.  The portfolio  includes
only  marketable  securities  with active  secondary or resale markets to ensure
portfolio liquidity.

Based on our  investment  portfolio  and  interest  rates at June 30,  2002,  we
believe  that a 100 basis point  increase  or  decrease in interest  rates would
result in an increase or decrease  or increase of  approximately  $0.8  million,
respectively, in the fair value of the investment portfolio. Changes in interest
rates may affect the fair value of the investment  portfolio;  however,  we will
not recognize such gains or losses into income unless the investments are sold.

The table below presents the carrying value for our  investment  portfolio.  The
carrying value approximates fair value at June 30, 2002.

Investment portfolio:
                                                Carrying value
                                               (in $ thousands)

Cash and cash equivalents........................   $ 19,363
Short-term investments...........................     81,195*
                                                  -----------
   Total.........................................   $100,558

* 66% in callable and non-callable Federal agencies, 28% invested in a bond
mutual fund and 6% in corporate bonds.

                                       27





                           PART II. OTHER INFORMATION

Item 1.       Legal Proceedings.                                        None.

Item 2.       Changes in Securities and Uses of Proceeds.

On June 14, 2002 our board of directors  adopted Amended and Restated Bylaws for
the purpose of modifying the number of directors  from a fixed number to a range
of  between  five and  nine,  with  the  exact  number  within  the  range to be
determined by  resolution  of the board of  directors.  The Amended and Restated
Bylaws are filed as Exhibit 3.2 to this Quarterly Report on Form 10-Q.

Item 3.       Defaults upon Senior Securities.                          None.

Item 4.       Submission of Matters to a Vote of Security Holders.      None.

Item 5.       Other Information.                                        None.

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

              (a)    The following documents are filed as part of this report

- -------------- -----------------------------------------------------------------
EXHIBIT                         DESCRIPTION OF DOCUMENT
NUMBER
- -------------- -----------------------------------------------------------------
3.2            Amended and Restated Bylaws of BioMarin Pharmaceutical Inc.
- -------------- -----------------------------------------------------------------
10.1           Employment Agreement dated June 14, 2002 between BioMarin
               Pharmaceutical Inc. and Louis Drapeau.
- -------------- -----------------------------------------------------------------
10.2**         Bioprocessing Services Agreement dated July 15, 2002, by and
               between BioMarin Pharmaceutical Inc. and Diosynth RTP Inc.
- -------------- -----------------------------------------------------------------
99.1           Certification of CEO and CFO pursuant to 18 U.S.C. Section 1350,
               as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of
               2002
- -------------- -----------------------------------------------------------------

** Portions of this document have been redacted pursuant to a Request for
Confidential Treatment filed pursuant to the Freedom of Information Act

                  (b) Reports on Form 8-K.



On April  16,  2002,  we  filed a  Current  Report  on Form  8-K  regarding  the
announcement  that  Genzyme  and we  filed  the  first  portion  of a  "rolling"
Biologics License Application with the U.S. Food and Drug Administration.

On April  24,  2002,  we  filed a  Current  Report  on Form  8-K  regarding  the
announcement  that we had begun dosing  patients in a Phase 2 clinical  trial of
Aryplase for the treatment of MPS VI.

On May 7, 2002, we filed a Current Report on Form 8-K regarding the announcement
of our financial results for the quarter ended March 31, 2002.

On May  16,  2002,  we  filed  a  Current  Report  on  Form  8-K  regarding  the
announcement that we commenced preclinical studies of NeuroTrans.

On June 12, 2002, we filed a Current Report on Form 8-K, which was  subsequently
amended and restated on June 18, 2002 on form 8-K/A,  regarding the dismissal of
Arthur Andersen LLP and appointment of KPMG LLP as our independent auditors.

                                       28


On June  24,  2002,  we  filed  a  Current  Report  on Form  8-K  regarding  the
announcement  of the detailed  results from the six-month  double-blind  Phase 3
clinical trial of our product  candidate  Aldurazyme and  preliminary  six-month
findings from the trial's ongoing open-label extension study.

On June  25,  2002,  we  filed  a  Current  Report  on Form  8-K  regarding  the
announcement of findings from the Phase 1 trial and the preliminary  findings of
the related extension study of our product candidate Aryplase.

                                       29




                                    SIGNATURE

     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
registrant  caused  this  Report to be signed on its behalf by the  undersigned,
thereunto duly authorized.



                                                BIOMARIN PHARMACEUTICAL INC.


Dated: _______________________         By:  /s/ Fredric D. Price
                                            --------------------
                                            Fredric D. Price, Chairman and Chief
                                            Executive Officer (on behalf of the
                                            Registrant)

Dated: _______________________         By:  /s/ Louis Drapeau
                                            -----------------
                                         Louis Drapeau, Chief Financial Officer,
                                         Vice President, Finance and Secretary



                                       30



                                  Exhibit Index


- -------------- -----------------------------------------------------------------
EXHIBIT                             DESCRIPTION OF DOCUMENT
NUMBER
- -------------- -----------------------------------------------------------------
3.2            Amended and Restated Bylaws of BioMarin Pharmaceutical Inc..
- -------------- -----------------------------------------------------------------
10.1           Employment Agreement dated June 14, 2002 between BioMarin
               Pharmaceutical Inc. and Louis Drapeau.
- -------------- -----------------------------------------------------------------
10.2**         Bioprocessing Services Agreement dated July 15, 2002, by and
               between BioMarin Pharmaceutical Inc. and Diosynth RTP Inc.
- -------------- -----------------------------------------------------------------
99.1           Certification of CEO and CFO pursuant to 18 U.S.C Section 1350,
               as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of
               2002
- -------------- -----------------------------------------------------------------

** Portions of this document have been redacted pursuant to a Request for
Confidential Treatment filed pursuant to the Freedom of Information Act



                                       31