Exhibit 99.1

Contacts:

Joshua Grass                                           Fredda Malkoff
Manager, Investor and Financial Relations              Account Director
BioMarin Pharmaceutical Inc.                           Feinstein Kean Healthcare
(415) 884-6777                                         (617) 577-8110
jgrass@biomarinpharm.com                               fmalkoff@fkhealth.com

For Immediate Release:

             BioMarin Announces Third Quarter 2002 Financial Results

 Conference Call and Webcast to be Held on November 1st at 2:00 PM ET (2000 CET)

Novato,  CA, October 31, 2002 - BioMarin  Pharmaceutical  Inc. (Nasdaq and Swiss
SWX New Market:  BMRN) today announced  financial  results for its third quarter
ended  September 30, 2002.  The net loss was $17.1 million ($0.32 per share) for
the third quarter of 2002  compared to $11.0  million  ($0.26 per share) for the
third quarter of 2001.  The net loss was $58.1 million ($1.10 per share) for the
nine months ended September 30, 2002 compared to $32.7 million ($0.83 per share)
for the nine months  ended  September  30, 2001.  BioMarin had $86.5  million in
cash, cash equivalents and short-term investments as of September 30, 2002.

The net loss in the third  quarter of 2002 was  primarily  due to the  continued
development  of the company's  lead product  programs:  AldurazymeTM  for MPS I,
AryplaseTM for MPS VI, and NeutralaseTM for heparin reversal.

Recent Announcements

The following recent  announcements by BioMarin  highlight some of the company's
continuing development efforts:

o        On October 28, 2002, BioMarin and Genzyme announced  that the U.S. Food
         and  Drug   Administration  (FDA)  informed   the  companies  that  the
         Aldurazyme  (laronidase) Biologics  License Application  (BLA) had been
         scheduled for review by the Endocrinologic and Metabolic Drugs Advisory
         Committee on January 15, 2003.  Aldurazyme is an investigational enzyme
         replacement  therapy  being  developed  by  BioMarin  and  Genzyme  for
         patients  with  mucopolysaccharidosis  I  (MPS I),  a  life-threatening
         genetic disease for which no  specific drug treatments currently exist.
         The  companies  anticipate  a  response  from  the  FDA  regarding  the
         application  to  market  Aldurazyme in  the U.S. by  the end of January
         2003.

o        On  September 30, 2002,  BioMarin announced that  it completed critical
         steps to begin  patient enrollment  for its Phase 3 trial of Neutralase
         for reversal of heparin in Coronary Artery Bypass Graft (CABG) surgery.
         Neutralase  is   an  enzyme   that  specifically   cleaves  heparin,  a
         carbohydrate used  as an anticoagulant  in CABG surgery.  Clinical data
         also suggests that Neutralase may be a valuable  heparin reversal agent
         in angioplasty and may shorten  time to patient ambulation. Preclinical
         experiments indicate that Neutralase may also reverse the newer classes
         of anticoagulants, such as the Low Molecular Weight Heparins (LMWH) and
         the pentasaccharide, fondiparinux.



o        On September  16, 2002,  BioMarin announced  that the FDA  accepted the
         Aldurazyme  BLA  and  granted the  application  priority review status.
         Priority  review  status specifies  that the  FDA  will respond  to the
         filing  within six  months from  the date of the  completed BLA filing,
         which was July 29, 2002.

o        On September 12, 2002, BioMarin announced the adoption of a stockholder
         rights  plan.  The  plan   was  adopted  to  better  protect   BioMarin
         stockholders and assure they receive full  value of their investment in
         the event of  any proposed  takeover of the  company. The  plan was not
         adopted in response to any specific proposal or attempt to gain control
         of the company.

o        On  August  22,  2002,  BioMarin   announced  the   completion  of  the
         acquisition of Glyko Biomedical Ltd. Glyko Biomedical's principal asset
         was  an  approximate 21%  ownership interest  in the  capital  stock of
         BioMarin.  As a result  of the  transaction, Glyko Biomedical became an
         indirect,  wholly owned,  subsidiary  of  BioMarin with  the  number of
         outstanding shares of BioMarin's common stock remaining the same.

BioMarin  will host a  conference  call and  webcast  to discuss  third  quarter
financial  results on November 1, 2002 at 2:00 PM ET (2000 CET).  This event can
be accessed on the BioMarin website at: http://investor.biomarinpharm.com.

Date: November 1st, 2002
Time: 2:00 PM ET (2000 CET)
U.S. & Canada Toll-free Dial in #: 1-800-915-4836
International Dial in #: 1-973-317-5319
Replay Toll-free Dial in #: 1-800-428-6051
Replay International Dial in #: 1-973-709-2089
Replay Code #: 265833

BioMarin  specializes in the  development and  commercialization  of therapeutic
enzyme   products  to  treat  serious,   life-threatening   diseases  and  other
conditions.

This  press  release  contains  forward-looking  statements  about the  business
prospects of BioMarin  Pharmaceutical  Inc.,  including the following  potential
future  products:  Aldurazyme  for  the  treatment  of MPS I,  Aryplase  for the
treatment of MPS VI, and  Neutralase for the reversal of  anticoagulants.  These
forward-looking  statements are predictions and involve risks and  uncertainties
such that actual results may differ  materially from these  statements.  Results
may differ materially  depending on the progress of BioMarin's product programs,
the actual  results of the  current  and  planned  clinical  trials,  actions of
regulatory  authorities,  including  actions  related to the  Biologics  License
Application  for  Aldurazyme,  availability  of capital,  future  actions in the
pharmaceutical  market  and  developments  by  competitors,  and  those  factors
detailed in BioMarin's filings with the Securities and Exchange  Commission such
as 10Q, 10K and 8K reports.  Stockholders  are urged not to place undue reliance
on forward-looking statements,  which speak only as of the date hereof. BioMarin
is under no obligation,  and expressly  disclaims any  obligation,  to update or
alter any  forward-looking  statement,  whether as a result of new  information,
future events or otherwise.



AldurazymeTM is a trademark of BioMarin/Genzyme LLC.  All rights reserved.

BioMarin's press releases and other company  information are available online at
http://www.biomarinpharm.com.   Information   on   BioMarin's   website  is  not
incorporated by reference into this press release.



                         BioMarin Pharmaceutical Inc.
                          Consolidated Balance Sheets

                                 (in thousands)


                                                               


                                          December 31,               September 30,
                                              2001                       2002
                                          ------------               -------------
Assets                                                                 (unaudited)
Current assets:
 Cash and cash equivalents                $     12,528                $     32,405
 Short-term investments                        118,569                      54,063
 Due from BioMarin/Genzyme LLC                   3,096                       2,332
 Current assets of discontinued
  operations of Glyko, Inc.                        668                           -
 Other current assets                            1,922                       2,570
                                          ------------               -------------
  Total current assets                         136,783                      91,370

Property, plant and equipment, net              32,560                      30,994
Investment in BioMarin/Genzyme LLC               1,145                       3,750
Other non-current assets                         1,323                       1,355
                                          ------------               -------------
  Total assets                            $    171,811                $    127,469
                                          ============               =============

Liabilities and Stockholders' Equity
Current liabilities:
 Accounts payable                         $      4,284                $        763
 Accrued liabilities                             2,198                       5,332
 Current liabilities of discontinued
  operations of Glyko, Inc.                        229                           5
 Other current liabilities                       1,591                       2,247
                                          ------------               -------------
  Total current liabilities                      8,302                       8,347

 Long-term liabilities                           3,961                       2,912
                                          ------------               -------------
  Total liabilities                             12,263                      11,259

Stockholders' equity:
 Common stock                                       52                          54
 Additional paid-in capital                    305,230                     318,410
 Warrants                                        5,134                       5,219
 Deferred compensation                           (699)                       (138)
 Notes receivable from stockholders            (2,037)                     (1,057)
 Accumulated other comprehensive loss             (13)                        (28)
 Deficit accumulated during
  the development stage                      (148,119)                   (206,250)
                                          ------------               -------------
  Total stockholders' equity                   159,548                     116,210
                                          ------------               -------------
  Total liabilities and
   stockholders' equity                   $    171,811                $    127,469
                                          ============               =============





                         BioMarin Pharmaceutical Inc.
                     Consolidated Statements of Operations

                     (in thousands, except per share data)
                                  (unaudited)



                                                                               

                                                      Three Months Ended         Nine Months Ended
                                                        September 30,               September 30,
                                                    -----------------------   -----------------------
                                                      2001          2002         2001         2002
                                                    ----------   ----------   ----------   ----------
Revenue
   Revenue from BioMarin/Genzyme LLC                $    3,079   $    3,569   $    8,621   $   10,784

Operating expenses
   Research and development                             10,039       14,675       31,042       41,229
   General and administrative                            2,340        3,940        5,350       10,928
   In-process research and development                       -            -            -       11,223
                                                    ----------   ----------   ----------   ----------
       Total operating expenses                         12,379       18,615       36,392       63,380

Loss from operations                                   (9,300)     (15,046)     (27,771)     (52,596)

Interest income                                            530          629        1,434        2,033
Interest expense                                           (8)        (123)         (11)        (375)
Equity in loss of BioMarin/Genzyme LLC                 (1,864)      (2,350)      (4,708)      (7,109)
                                                    ----------   ----------   ----------   ----------

Net loss from continuing operations                   (10,642)     (16,890)     (31,056)     (58,047)

   Income (loss) from discontinued operations            (373)        (219)      (1,628)           75
   Loss on disposal of discontinued operations               -          (8)            -        (159)
                                                    ----------   ----------   ----------   ----------

Net loss                                            $ (11,015)   $ (17,117)   $ (32,684)   $ (58,131)
                                                    ==========   ==========   ==========   ==========

Net loss per share, basic and diluted
    Loss from continuing operations                 $   (0.25)   $   (0.32)   $   (0.79)   $   (1.10)
    Income (loss) from discontinued operations          (0.01)            -       (0.04)            -
    Loss on disposal of discontinued operations              -            -            -            -
                                                    ----------   ----------   ----------   ----------
    Net loss                                        $   (0.26)   $   (0.32)   $   (0.83)   $   (1.10)
                                                    ==========   ==========   ==========   ==========

Weighted average common shares outstanding              42,136       53,446       39,601       53,011
                                                    ==========   ==========   ==========   ==========