As filed with the Securities and Exchange Commission on December 20, 2002
                                                   Registration No. 333-________
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                          BioMarin Pharmaceutical Inc.
             (Exact name of registrant 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 Boulevard, Suite 210
                            Novato, California 94949
                                 (415) 884-6700
    (Address, including zip code, and telephone number, including area code,
                  of registrant's principal executive offices)



                                  Louis Drapeau
                             Chief Financial Officer
                          BioMarin Pharmaceutical Inc.
                     371 Bel Marin Keys Boulevard, Suite 210
                            Novato, California 94949
                                 (415) 884-6700
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)


                                    Copy to:
                              Siobhan McBreen Burke
                      Paul, Hastings, Janofsky & Walker LLP
                       515 South Flower Street, 25th Floor
                       Los Angeles, California 90071-2371
                                 (213) 683-6000

         Approximate  date of  commencement  of proposed sale to the public:
From time to time after the effective date of this Registration Statement.
         If the only securities  being  registered on this form are being
offered  pursuant to dividend or interest reinvestment plans, please check the
following box. |_|
         If any of the  securities  being  registered  on this form are to be
offered  on a delayed  or  continuous basis  pursuant to Rule 415 under the
Securities  Act of 1933,  other than  securities  offered only in connection
with dividend or interest reinvestment plans, check the following box. |X|
         If this form is filed to register  additional  securities  for an
offering  pursuant to Rule 462(b)  under the Securities Act,  please check the
following box and list the Securities Act  registration  statement  number of
the earlier effective registration statement for the same offering. |_|
         If this form is a  post-effective  amendment filed pursuant to Rule
462(c) under the Securities Act, check the following box and list the Securities
Act registration  statement number of the earlier effective  registration
statement for the same offering. |_|
         If  delivery of the  prospectus  is expected  to be made  pursuant to
Rule 434 under the  Securities  Act, please check the following box. |_|

================================================================================
                         CALCULATION OF REGISTRATION FEE
================================================================================

    Title of Each Class of       Proposed Maximum Aggregate      Amount of
 Securities to be Registered       Offering Price (1) (2)     Registration Fee
--------------------------------------------------------------------------------
Common Stock, par value $0.001           $150,000,000              $13,800
--------------------------------------------------------------------------------

         (1)  An  indeterminate  number of shares of common stock is being
registered  as may at various  times be issued at indeterminate prices, with an
aggregate public offering price not to exceed $150,000,000.
         (2)  Estimated  solely for the purpose of calculating the  registration
fee pursuant to Rule 457(o) under the Securities Act of 1933.

THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR DATES
AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL FILE
A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION STATEMENT
SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF THE
SECURITIES ACT OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME EFFECTIVE ON
SUCH DATE AS THE SECURITIES AND EXCHANGE COMMISSION, ACTING PURSUANT TO SAID
SECTION 8(a), MAY DETERMINE
================================================================================




PRELIMINARY PROSPECTUS
SUBJECT TO COMPLETION DATED DECEMBER 20, 2002


                                    BIOMARIN
                               PHARMACEUTICAL INC.

                                  $150,000,000
                         Common Stock, par value $0.001






We may offer from time to time the shares of our common stock  described in this
prospectus in amounts,  at prices,  and on terms to be determined at the time of
the offering.  This prospectus  describes the general manner in which our common
stock may be offered using this  prospectus.  We will provide the specific terms
of the offering in supplements to this  prospectus.  This  prospectus may not be
used to offer and sell our  common  stock  unless  accompanied  by a  prospectus
supplement.

Our common stock  currently  trades on the Nasdaq  National Market and the Swiss
SWX New Market  under the symbol  "BMRN." The last  reported  sale price for our
common stock on the Nasdaq  National  Market on December 19, 2002, was $7.21 per
share.

We will  provide  the  specific  terms of the  offering in  supplements  to this
prospectus.  You should read this prospectus and any supplement carefully before
you invest.  See "Risk Factors" beginning on page 3 to read about risks that you
should consider before buying shares of our common stock.

Neither the Securities and Exchange Commission nor any other regulatory body has
approved or disapproved these securities or passed upon the adequacy or accuracy
of this prospectus. Any representation to the contrary is a criminal offense.


                 The date of this prospectus is _________, 200_








The  information in this  prospectus is not complete and may be changed.  We may
not sell  these  securities  until the  registration  statement  filed  with the
Securities and Exchange Commission is effective. This prospectus is not an offer
to  sell  these  securities,  and is  not  soliciting  an  offer  to  buy  these
securities, in any state where the offer or sale is not permitted.


                                                 TABLE OF CONTENTS

ABOUT THIS PROSPECTUS..........................................................1

SUMMARY ...................................................................... 1

RISK FACTORS...................................................................3

FORWARD LOOKING STATEMENTS....................................................15

USE OF PROCEEDS...............................................................16

PLAN OF DISTRIBUTION..........................................................17

LEGAL MATTERS.................................................................20

EXPERTS ..................................................................... 20

WHERE YOU CAN FIND MORE INFORMATION...........................................20






                              ABOUT THIS PROSPECTUS

This prospectus is part of a registration  statement that we have filed with the
Securities and Exchange Commission under a "shelf" registration  process.  Under
this shelf process, we may sell the shares of our common stock described in this
prospectus  in  one  or  more  offerings,   up  to  a  total  dollar  amount  of
$150,000,000.  Each time we offer  common  stock,  we will  provide a prospectus
supplement that will describe the specific terms of the offering. The prospectus
supplement  and any  pricing  supplement  may also add to,  update or change the
information contained in this prospectus. Please carefully read this prospectus,
the  prospectus  supplement  and any  pricing  supplement,  in  addition  to the
information  contained in the documents we refer to under the heading "Where You
Can Find More Information."
                                     SUMMARY

This  prospectus  contains  forward looking  statements  which involve risks and
uncertainties. Our actual results could differ materially from those anticipated
in these forward  looking  statements as a result of certain  factors  appearing
under "Risk Factors" and elsewhere in this prospectus.

The following summary does not contain all the information that may be important
to  you.  You  should  read  the  entire  prospectus,  including  the  financial
statements and other  information  incorporated by reference in this prospectus,
before making an investment decision.

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.

Our lead product  candidate,  Aldurazyme(TM)  is being  developed with our joint
venture partner,  Genzyme Corporation  (Genzyme),  for the treatment of MPS I, a
life threatening genetic disease for which no specific drug treatments currently
exist. On July 31, 2002, we announced that the U.S. Patent and Trademark  Office
had issued U.S. Patent No.  6,426,208  covering  Aldurazyme for the treatment of
MPS  I.  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.

In July 2002, we announced  that  together with Genzyme,  we submitted the final
portion of our "rolling"  Biologics  License  Application (BLA) to the U.S. Food
and Drug  Administration  (FDA). The BLA is the application to market Aldurazyme
in the U.S. The BLA was formally  accepted and granted priority review status in
September  2002.  On October 28,  2002,  Genzyme and we  announced  that the FDA
informed  us that  the  Aldurazyme  BLA had been  scheduled  for  review  by the
Endocrinologic  and  Metabolic  Drugs  Advisory  Committee  on January 15, 2003.
Genzyme and we expect a response  from the FDA  regarding  the BLA by the end of
January 2003. A Marketing Authorization Application or MAA, was submitted to the
European  Agency for the  Evaluation of Medicinal  Products  (EMEA) in the first
quarter of 2002. The MAA is the application to market Aldurazyme in the European
Community. We expect a response on the MAA in the first half of 2003.

On November 24, 2002, Genzyme and we released 36-week data from the ongoing open
label Phase-3 extension study of Aldurazyme.  This data was submitted to the FDA
for review as part of the BLA and was also  submitted  to the EMEA for review as
part of the MAA.

We are developing  another product  candidate,  Neutralase(TM),  for reversal of
anticoagulation by heparin in patients  undergoing Coronary Artery Bypass Graft,
or CABG,  surgery.  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  following  CABG surgery.  We completed  critical steps to
begin patient  enrollment  for our Phase 3 trial of  Neutralase  for reversal of
heparin in CABG  surgery.  Neutralase  may also be useful as a heparin  reversal
agent in coronary angioplasty.  Preclinical experiments indicate that Neutralase
may also reverse the newer classes of anticoagulants,  such as the low molecular
weight heparins and the pentasaccharide, fondiparinux.

                                       1


In 2001,  we announced  the results of a Phase 1 trial of  Aryplase(TM)  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 and expect  results in the first half of 2003. We are also
developing  Vibrilase(TM),  a topical enzyme product for use in removing  burned
skin tissue in the treatment of serious  burns.  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 first half of 2003.

In addition, we are in preclinical development with several other enzyme product
candidates  for  genetic  and other  diseases  and  conditions,  as well as with
NeuroTrans(TM),  our  technology  that is being  investigated  as a  method  for
delivering  enzymes and other drug  candidates to the brain through  traditional
intravenous  delivery.  Additionally,  we  are  actively  seeking  partners  for
licensing the NeuroTrans  technology for use with non-enzyme  based  treatments,
including for the treatment of brain cancers.

                                    .........

Our  principal  executive  offices are located at 371 Bel Marin Keys  Boulevard,
Suite  210,  Novato,  CA 94949  and our  telephone  number  is  (415)  884-6700.
"BioMarin,"  "Aryplase,"   "Neutralase"  and  "Vibrilase"  are  our  trademarks.
"Aldurazyme"  is a trademark of  BioMarin/Genzyme  LLC. All other  trademarks or
trade names referred to in this prospectus are the property of their  respective
owners. Information contained in our website, www.biomarinpharm.com, is not part
of this prospectus.

                                       2


                                  RISK FACTORS


An investment in our common stock  involves a high degree of risk. We operate in
a dynamic  and  rapidly  changing  industry  that  involves  numerous  risks and
uncertainties. Before purchasing these securities, you should carefully consider
the  following  risk  factors,  as well as other  information  contained in this
prospectus or  incorporated  by reference into this  prospectus,  to evaluate an
investment  in  the  securities  offered  by  this  prospectus.  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 September 30, 2002, we had an accumulated deficit of
approximately  $ 206.3  million.  We expect to continue to operate at a net loss
for at  least  the next few  years.  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.

                                       3


We believe that our cash, cash equivalents and short term investment  securities
balances at September  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 some 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.

                                       4


We completed a 36-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 our  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 would be the case 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  facilities and processes. 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 some of our drug products
is particularly limited,  orphan drug designation is particularly  important for
our products that are eligible for orphan drug designation.  For eligible drugs,
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 that do not have patent  protection,  our competitors may then
sell the same drug to treat the same condition.

                                       5


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.

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 affected.

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.

                                       6


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.

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
         expenses 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 certain 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 cross-licenses to our patents.

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

                                       7


It is also unclear whether our trade secrets are adequately protected.  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.

We may  also  support  and  collaborate  in  research  conducted  by  government
organizations  or  by   universities.   These   government   organizations   and
universities  may be unwilling to grant us any exclusive rights to technology or
products  derived  from  these   collaborations   prior  to  entering  into  the
relationship.  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 to a third
party 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 to a third
party  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  Genzyme or we 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 we are 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.

                                       8


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.

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 and
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 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.

                                       9


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.

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, which are
         colonies of cells that 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  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.

                                       10


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.

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 Neutralase
and NeuroTrans,  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 us. 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 our 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.

                                       11


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. Our
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.

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 Business Operations or Christopher M. Starr, Ph.D., our
Senior Vice President of Scientific Operations, 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,  these
agreements  do not  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,  Vibrilase and
Neutralase 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,
Vibrilase and Neutralase for which our insurance coverage is not adequate.

                                       12


If  Aldurazyme,  Aryplase,  Vibrilase  or  Neutralase  receives  FDA or  foreign
regulatory  approval,  the product liability insurance we will need to obtain in
connection  with the  commercial  sales of  Aldurazyme,  Aryplase,  Vibrilase or
Neutralase 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;

o        developments or disputes concerning patent or proprietary rights;

o        general market conditions and fluctuations for the emerging growth and
         biopharmaceutical market sectors; 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 you purchase our common stock pursuant to this  prospectus,  depending on the
terms of the offering,  you will incur  immediate  dilution in the book value of
your shares.

Based on our most  recent  balance  sheet and the  recent  trading  price of our
common  stock,  you will incur an immediate  dilution in the net  tangible  book
value per share of our common stock purchased  pursuant to this prospectus.  The
magnitude  of this  dilution  will depend on the offering  price per share,  the
total net proceeds  received by us in the  offering  and the net  tangible  book
value of our common stock immediately before the offering.

                                       13


Anti-takeover provisions in our charter documents, our stockholders' rights plan
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 an  additional  249,886  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.

On September 11, 2002, our board of directors  authorized a stockholders' rights
plan and related  dividend of one preferred  share purchase right for each share
of our common stock  outstanding at the close of business on September 23, 2002.
As long as these  rights are  attached  to our common  stock,  we will issue one
right with each new share of common stock so that all shares of our common stock
will have  attached  rights.  When  exercisable,  each  right will  entitle  the
registered holder to purchase from us one one-hundredth of a share of our Series
B Junior Participating Preferred Stock at a price of $35.00 per one-hundredth of
a Preferred Share, subject to adjustment.

The rights are designed to assure that all of our stockholders  receive fair and
equal treatment in the event of any proposed takeover of us and to guard against
partial tender offers,  open market  accumulations  and other abusive tactics to
gain control of us without paying all stockholders a control premium. The rights
will cause  substantial  dilution to a person or group that acquires 15% or more
of our  stock on terms not  approved  by our board of  directors.  However,  the
rights  may have the  effect  of  making  an  acquisition  of us,  which  may be
beneficial to our stockholders, more difficult, and the existence of such rights
may prevent or reduce the  likelihood  of a third  party  making an offer for an
acquisition of us.

The ability of our  stockholders  to recover  against Arthur Andersen LLP may be
limited because we have not been able to obtain,  after reasonable efforts,  the
reissued  reports of Arthur  Andersen with respect to the  financial  statements
included in this prospectus.

Our audited consolidated financial statements,  the audited financial statements
of IBEX Technologies  Inc./Technologies IBEX Inc.-- Therapeutic Enzymes Division
and Glyko  Biomedical  Ltd.  incorporated by reference into this prospectus have
been  audited by Arthur  Andersen  LLP.  We have not been able to obtain,  after
reasonable efforts,  the reissued reports of Arthur Andersen with respect to the
financial  statements  included  in this  registration  statement  of which this
prospectus is a part. Therefore,  in reliance on Rule 437a promulgated under the
Securities  Act,  we have  dispensed  with the  requirement  to file  with  this
registration  statement the reissued  report and consent of Arthur Andersen with
respect to these financial statements. As a result, our stockholders will not be
able to recover  against Arthur  Andersen under Section 11 of the Securities Act
for any  untrue  statement  of a  material  fact  contained  in these  financial
statements  or any  omissions  to state a material  fact  required  to be stated
therein.  In  addition,  the  ability of Arthur  Andersen  to satisfy any claims
properly  brought against it may be limited as a practical  matter due to recent
developments involving Arthur Andersen.

                                       14


                           FORWARD LOOKING STATEMENTS

This prospectus contains forward looking statements.  These statements relate to
future events or our future financial  performance.  We have identified  forward
looking  statements  in this  prospectus  using  words  such  as  "anticipates",
"believes,"  "could,"   "estimates,"   "expects,"   "intends,"  "may,"  "plans,"
"potential,"  "predicts,"  "should,"  or "will" or the negative of such terms or
other comparable terminology.  These statements are based on our beliefs as well
as  assumptions  we made using  information  currently  available to us. Because
these  statements  reflect our current views  concerning  future  events,  these
statements  involve  risks,   uncertainties,   and  assumptions.   These  risks,
uncertainties, assumptions and other factors, including the risks outlined under
"Risk Factors," that may cause our or our industry's  actual results,  levels of
activity,  performance or  achievements  to be materially  different from future
results,  levels of actual  activity,  performance or achievements  expressed or
implied by such forward looking statements.

Although we believe  that the  expectations  reflected  in the  forward  looking
statements  are  reasonable,  we  cannot  guarantee  future  results,  levels of
activity, performance or achievements. Moreover, neither we nor any other person
assumes responsibility for the accuracy and completeness of such statements.  We
are under no duty to update any of the forward looking statements after the date
of this prospectus to conform such statements to actual results, unless required
by law.


                                       15


                                 USE OF PROCEEDS

We cannot  guarantee  that we will receive any proceeds in connection  with this
offering.  Unless we inform you  otherwise  in a  prospectus  supplement  or any
pricing supplement, we expect to use the net proceeds from any and all offerings
of the common stock  registered  hereunder  for general  corporate  purposes and
working capital, which may include some or all of the following purposes:

o        to fund our share of costs associated with our joint venture with
         Genzyme for the development and commercialization of Aldurazyme;

o        to fund research and development including clinical trials, regulatory
         processes, process development and scale-up and start-up of
         manufacturing activities for our other pharmaceutical product programs,
         including Neutralase, Aryplase and Vibrilase, and other products in
         earlier stages of development; and

o        to fund research, development, clinical and commercial manufacturing
         facilities, including related equipment.

A portion of the proceeds may also be used to acquire or invest in businesses or
products or to obtain rights to use other  technologies.  There are currently no
commitments or agreements with respect to any such acquisitions.

We have not  identified  precisely the amounts we plan to spend on each of these
areas or the timing of such expenditures.  Accordingly, our management will have
significant flexibility in applying such proceeds. The amounts actually expended
for each  purpose  may  vary  significantly  depending  upon  numerous  factors,
including  the amount and timing of the proceeds  from this  offering,  progress
with the regulatory approval, manufacturing and commercialization of Aldurazyme,
Neutralase,  Aryplase  and  Vibrilase  and progress  with our other  development
programs.  In addition,  expenditures will also depend upon the establishment of
additional collaborative  arrangements with other companies, the availability of
other financing and other factors.  Pending use for these or other purposes,  we
intend  to  invest  the  net   proceeds   of  this   offering   in   short-term,
investment-grade, interest-bearing securities.


                                       16


                              PLAN OF DISTRIBUTION

We may offer the common stock covered by this prospectus by one or more of, or a
combination of, the following methods:

o        through agents to the public;

o        to underwriters for resale to the public;

o        directly to institutional investors;

o        in payment of all or a portion of the purchase price from one or more
         acquisitions of companies, businesses or assets; or

o        as consideration for rights for us to use third party technologies
         pursuant to one or more license, development or other similar
         agreements.

We will set  forth in a  prospectus  supplement  the  terms of the  offering  of
securities, including:

o        the name or names of any agents or underwriters;

o        the purchase price of the securities being offered and the proceeds we
         will receive from the sale;

o        any over-allotment options under which underwriters may purchase
         additional securities from us;

o        any agency fees or underwriting discounts and other items constituting
         agents' or underwriters' compensation;

o        any initial public offering price; and

o        any discounts or concessions allowed or reallowed or paid to dealers.

To the extent  required  by law,  we may also  provide  this  information  by an
amendment to the registration statement, of which this prospectus is a part.

Sale Through Agents

We may  designate  agents to solicit  purchases  for the  period of the  agent's
appointment or to sell the common stock on a continuing basis.  Unless we inform
you otherwise in the applicable prospectus  supplement,  any agent will agree to
use its  reasonable  best  efforts  to solicit  purchases  for the period of the
agent's appointment.

Sale Through Underwriters

If we use underwriters  for a sale of the common stock,  the  underwriters  will
acquire the common stock for their own account.  The underwriters may resell the
common stock in one or more transactions,  including negotiated transactions, at
a fixed public  offering  price or at varying  prices  determined at the time of
sale. We may offer the common stock through an underwriting syndicate or through
a single underwriter. The obligations of the underwriters to purchase the common
stock will be subject to the conditions set forth in the applicable underwriting
agreements.

The  underwriters  will be obligated to purchase all the offered  common  stock,
subject to certain  conditions  contained in an  underwriting  agreement that we
will  enter  into  with  the  underwriters  at the  time of sale  to  them.  The
underwriters  may from time to time  change  any public  offering  price and any
discounts or  concessions  allowed or  reallowed or paid to dealers.  We may use
underwriters with whom we have a material relationship.  We will describe in the
prospectus  supplement  that  names  the  underwriter  the  nature  of any  such
relationship.

                                       17


Sale Through Dealers

If we use dealers in the sale of common stock,  we will sell the common stock to
the dealers as principals.  They may then resell that common stock to the public
at varying prices  determined by the dealers at the time of resale or at a fixed
offering price agreed to with us at the time of sale.

Compensation Of Underwriters, Dealers And Agents

Underwriters,  dealers and agents that  participate in the  distribution  of the
common stock may be  underwriters  as defined in the  Securities Act of 1933 and
any  discounts  or  commissions  they  receive from us, as well as any profit on
their resale of the common stock,  may be treated as underwriting  discounts and
commissions under the Securities Act of 1933. We will identify in the applicable
prospectus  supplement  any  underwriters,  dealers or agents and will  describe
their  compensation.  We may have agreements with the  underwriters,  dealers or
agents  to  indemnify  them  against  specified  civil  liabilities,   including
liabilities under the Securities Act of 1933.  Underwriters,  dealers and agents
may engage in transactions  with or perform  services for us or our subsidiaries
in the ordinary course of their businesses. This includes commercial banking and
investment banking transactions.

Direct Sales

We may sell the common stock directly.  In that event, no underwriters or agents
would be  involved.  We may sell the  common  stock  directly  to  institutional
investors or others who may be deemed to be  underwriters  within the meaning of
the Securities Act with respect to any sale of that common stock.

Delayed Delivery Contracts

If we so indicate in a prospectus  supplement,  we may  authorize  underwriters,
dealers or agents to solicit  offers  from  selected  types of  institutions  to
purchase  common  stock  from us at the  public  offering  price  under  delayed
delivery requirements. These contracts would provide for payment and delivery on
a specified  date in the future.  Institutions  with which such contracts may be
made include commercial and savings banks,  insurance companies,  pension funds,
investment  companies,  educational and charitable  institutions and others. The
contracts would be subject only to those conditions  described in the prospectus
supplement. The applicable prospectus supplement relating to such contracts will
set  forth the  price to be paid for  common  stock  under  the  contracts,  the
commission  payable for  solicitation  of the contracts and the date or dates in
the future for delivery of the common stock under the contracts.

Stabilization Activities

During and after an offering through underwriters, the underwriters may purchase
and sell the common stock in the open  market.  These  transactions  may include
overallotment  and  stabilizing  transactions  and purchases to cover  syndicate
short positions  created in connection with the offering.  The  underwriters may
also impose a penalty  bid, in which  selling  concessions  allowed to syndicate
members or other  broker-dealers  for the  offered  common  stock sold for their
account  may be  reclaimed  by the  syndicate  if the  offered  common  stock is
repurchased  by the syndicate in  stabilizing  or covering  transactions.  These
activities may stabilize,  maintain or otherwise  affect the market price of the
offered  common stock,  which may be higher than the price that might  otherwise
prevail in the open market.  If commenced,  these activities may be discontinued
at any time.

Passive Market Making

Any  underwriters  who are qualified market makers on the Nasdaq National Market
may engage in passive  market  making  transactions  in the common  stock on the
Nasdaq  National  Market in accordance with Rule 103 of Regulation M, during the
business day prior to the pricing of the offering,  before the  commencement  of
offers or sales of the  securities.  Passive  market  makers  must  comply  with
applicable volume and price limitations and must be identified as passive market
makers.  In general,  a passive market maker must display its bid at a price not
in excess of highest  independent bid for the security;  if all independent bids
are lowered below the passive  market maker's bid,  however,  the passive market
maker's bid then must be lowered when certain purchase limits are exceeded.

                                       18


Acquisitions

We may offer the common  stock in  payment  of all or a portion of the  purchase
price from one or more  acquisitions  of  companies,  businesses  or assets.  We
expect that the terms of  acquisitions in which the common stock would be issued
by us would be  determined  by  negotiations  between  us and the  owners of the
companies, businesses or assets we intend to acquire. It is anticipated that the
common stock issued in any such acquisition  would be valued for purposes of the
acquisition  at a price  reasonably  related to the  market  value of the common
stock  either  at the  time  of the  execution  of  the  definitive  acquisition
agreement or at the time of the consummation of the acquisition.

License, Development Or Other Similar Agreements

We may offer the common  stock as  consideration  for rights for us to use third
party technologies pursuant to one or more license, development or other similar
agreements.  We expect that the terms of those agreements would be determined by
negotiations  between  us  and  the  other  party  or  parties  to a  particular
agreement. The common stock issued as part of any such agreement would be valued
for purposes of the agreement at a price reasonably  related to the market value
of the common stock either at the time of the signing of the agreement,  or such
other date as the agreement stipulates.


                                       19


                                  LEGAL MATTERS

For the purpose of this  offering,  Paul,  Hastings,  Janofsky & Walker LLP, Los
Angeles,  California is giving an opinion of the validity of the issuance of the
securities offered in this prospectus.

                                     EXPERTS

Our audited financial  statements for the year ended December 31, 2001, included
in our Annual  Report on  Form 10-K,  the audited  financial  statements of IBEX
Technologies Inc./Technologies IBEX Inc.-- Therapeutic Enzymes Division included
in our Current  Report on Form  8-K/A,  as filed on January  14,  2002,  and the
audited  financial  statements of Glyko Biomedical Ltd.  included in our Current
Report on Form 8-K/A,  as filed on October 18,  2002,  which are incorporated by
reference in this prospectus and elsewhere in the registration  statement,  have
been  audited  by  Arthur  Andersen  LLP,  independent  public  accountants,  as
indicated in their report with respect  thereto.  After reasonable  efforts,  we
have not been able to obtain a current  consent  of Arthur  Andersen  LLP to the
inclusion  of these  financial  statements,  and the  related  report  of Arthur
Andersen  LLP, in this  prospectus.  Therefore,  in reliance on Rule 437a of the
Securities  Act,  the consent of Arthur  Andersen  included  herein has not been
reissued  and Arthur  Andersen  LLP has not  consented  to the  inclusion of its
report  in this  amendment  to the  registration  statement.  As a  result,  our
stockholders  may not be able to  recover  against  Arthur  Andersen  LLP  under
Section 11 of the  Securities  Act for any untrue  statement of a material  fact
contained in these  financial  statements  or any  omissions to state a material
fact  required to be stated in these  financial  statements.  In  addition,  the
ability of Arthur Andersen LLP to satisfy claims properly brought against it may
be limited as a practical  matter due to recent  developments  involving  Arthur
Andersen LLP.

                       WHERE YOU CAN FIND MORE INFORMATION

We are a reporting company and file annual, quarterly and current reports, proxy
statements  and  other  information  with the SEC.  You may read and copy  these
reports,  proxy  statements and other  information at the SEC's public reference
rooms in Washington,  D.C. You can request copies of these  documents by writing
to the SEC  and  paying  a fee for the  copying  cost.  Please  call  the SEC at
1-800-SEC-0330  for more information about the operation of the public reference
rooms.   Our  SEC  filings  are  also   available  at  the  SEC's  Web  site  at
"http://www.sec.gov."  In addition, you can read and copy our SEC filings at the
office of the National Association of Securities Dealers, Inc. at 1735 K Street,
Washington, D.C. 20006.

The SEC allows us to  "incorporate by reference"  information  that we file with
them, which means that we can disclose important information to you by referring
you  to  those  documents.  The  information  incorporated  by  reference  is an
important part of this  prospectus,  and information that we file later with the
SEC will  automatically  update and supercede  this  information.  Further,  all
filings we make under the Securities  Exchange Act of 1934 after the date of the
initial  registration  statement and prior to  effectiveness of the registration
statement shall be deemed to be incorporated by reference into this  prospectus.
We incorporate by reference the documents listed below and any future filings we
will make with the SEC under Section 13(a), 13(c), 14 or 15(d) of the Securities
Exchange Act of 1934:

1.       Our Annual Report on Form 10-K for the year ended  December 31, 2001,
         as amended by Form 10-K/A, as filed on April 30, 2002;

2.       Our Quarterly  Report on Form 10-Q for the quarters ended March 31,
         2002,  June 30, 2002 and September 30, 2002;

3.       Our Current  Report of Form 8-K/A filed on January 14, 2002 and our
         Current  Reports on Form 8-K, as filed on January 7, 2002,  January 15,
         2002;  February 7, 2002;  February 26, 2002;  March 21, 2002; April 16,
         2002;  April 24, 2002;  May 7, 2002;  May 16, 2002;  June 12, 2002,  as
         amended and restated on June 18,  2002; June 24,  2002;  June 25, 2002;
         July 9, 2002; July 15, 2002;  July 29,  2002;  August 1,  2002;  August
         2,  2002;  August 26,  2002 as amended by Form 8-K/A on  October 18,
         2002;  September 13,  2002;  September 17,  2002; September 30, 2002;
         October 30, 2002; November 1, 2002; and November 26, 2002; and

                                       20


4.       The description of our common stock set forth in our Form 8A, filed
         with the SEC on July 15, 1999.

We will  provide  to you at no  cost a copy  of any  and all of the  information
incorporated  by  reference  into  the  registration  statement  of  which  this
prospectus is a part.  You may make a request for copies of this  information in
writing or by telephone. Requests should be directed to:

                          BioMarin Pharmaceutical Inc.
                           Attention: Joshua A. Grass
                     371 Bel Marin Keys Boulevard, Suite 210
                                Novato, CA 94949
                                 (415) 884-6777

Any statement contained in a document  incorporated or deemed to be incorporated
by reference in this prospectus shall be deemed modified, superceded or replaced
for purposes of this prospectus to the extent that a statement contained in this
prospectus,  or in any  subsequently  filed  document  that also is deemed to be
incorporated by reference in this prospectus,  modifies,  supercedes or replaces
such statement.  Any statement so modified,  superceded or replaced shall not be
deemed,  except as so modified,  superceded or replaced,  to constitute  part of
this prospectus.


                                       21



                                     PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION

The following  table sets forth the costs and expenses to be paid by the
registrant in connection  with the sale of the common stock being registered:


                                                                                 

             Securities and Exchange Commission registration fee....................$13,800
             Legal fees and expenses................................................ 25,000
             Accountants' fees and expenses.........................................  3,000
             Miscellaneous..........................................................  2,000
             Total..................................................................$43,800



The  foregoing  items,   except  for  the  Securities  and  Exchange  Commission
registration fee, are estimated.

ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

Reference is made to the Amended and Restated  Certificate of Incorporation with
the  Registrant;  the  Bylaws of the  Registrant;  Section  145 of the  Delaware
General  Corporation  Law;  which,  among other  things,  and subject to certain
conditions,  authorize the Registrant to indemnify, or indemnify by their terms,
as the case may be, the directors and officers of the Registrant against certain
liabilities and expenses incurred by such persons in connection with claims made
by reason of their being such a director or officer. Pursuant to this authority,
the Registrant has entered into an indemnification  agreement with each director
and  executive  officer,   whereby  the  Registrant  has  agreed  to  cover  the
indemnification obligations.

The  Registrant   maintains   directors'  and  officers'   insurance   providing
indemnification  against  certain  liabilities  for certain of the  Registrant's
directors, officers, affiliates, partners or employees.

The   indemnification   provisions   in  the   Registrant's   Bylaws,   and  the
indemnification agreements entered into between the Registrant and its directors
and executive officers,  may be sufficiently broad to permit  indemnification of
the Registrant's officers and directors for liabilities arising under the Act.

Reference is made to the following documents incorporated by reference into this
Registration Statement regarding relevant  indemnification  provisions described
above  and  elsewhere  herein:  (1) the  Amended  and  Restated  Certificate  of
Incorporation,  filed  as  Exhibit  3.1B  to  Registrant's  Amendment  No.  2 to
Registration  Statement  on Form S-1  filed  with the  Securities  and  Exchange
Commission on July 6, 1999; (2) the Registrant's  Bylaws filed as Exhibit 3.1 to
Registrant's  Quarterly Report on Form 10-Q for the quarter ended June 30, 2002,
and (3) the form of  Indemnification  Agreement  entered into by the  Registrant
with each of its  directors  and  executive  officers  filed as Exhibit  10.1 to
Registrant's  Registration  Statement on Form S-1 filed with the  Securities and
Exchange  Commission on May 4, 1999,  each  incorporated  by reference into this
Registration Statement.


                                      II-1


ITEM 16.  EXHIBITS


                   


      Exhibit
       Number                   Description of Document

        5.1**         Opinion of Paul, Hastings, Janofsky & Walker LLP.
       23.1**         Consent of Paul, Hastings, Janofsky & Walker LLP (included with Exhibit 5.1).
       23.2*          Consent of Arthur Andersen LLP.
       24.1           Power of Attorney (included with signatures).

*   Omitted pursuant to Rule 437a promulgated under the Securities Act of 1933.
**  To be filed by amendment.
--------------------------------------------------------------------------------------------------



ITEM 17.  UNDERTAKINGS

     Insofar as indemnification for liabilities arising under the Securities Act
of 1933, may be permitted to directors, officers, and controlling persons of the
Registrant  pursuant to the  provisions  described in Item 15 or otherwise,  the
Registrant  has been advised that in the opinion of the  Securities and Exchange
Commission,  such  indemnification  is against public policy as expressed in the
Act,  and  is,  therefore,   unenforceable.  In  the  event  that  a  claim  for
indemnification  against  such  liabilities  (other  than  the  payment  by  the
Registrant of expenses incurred or paid by a director,  officer,  or controlling
person of the  Registrant  in the  successful  defense  of any action  suit,  or
proceeding) is asserted by such  director,  officer,  or  controlling  person in
connection with the securities being registered,  the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit  to a  court  of  appropriate  jurisdiction  the  question  whether  such
indemnification  by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.

         The undersigned Registrant hereby undertakes:

     (1)  To file,  during  any  period in which  offers or sales are being made
     pursuant to this  registration  statement:  (i) to include  any  prospectus
     required by Section 10(a)(3) of the Securities Act of 1933; (ii) to reflect
     in the  prospectus  any facts or events arising after the effective date of
     the  registration  statement (or the most recent  post-effective  amendment
     thereof) which,  individually or in the aggregate,  represent a fundamental
     change  in  the  information  set  forth  in  the  registration  statement.
     Notwithstanding  the  foregoing,  any  increase  or  decrease  in volume of
     securities  offered (if the total dollar value of securities  offered would
     not exceed that which was  registered)  and any  deviation  from the low or
     high end of the estimated  maximum  offering  range may be reflected in the
     form of prospectus filed with the Commission pursuant to Rule 424(b) if, in
     the aggregate,  the changes in volume and price represent no more than a 20
     percent  change in the maximum  aggregate  offering  price set forth in the
     "Calculation  of  Registration  Fee"  table in the  effective  registration
     statement;  (iii) to include any material  information  with respect to the
     distribution not previously disclosed in the registration  statement or any
     material change to such information in the registration statement;

     (2)  That,  for  the  purpose  of  determining   any  liability  under  the
     Securities Act of 1933, each such post-effective  amendment shall be deemed
     to be a new  registration  statement  relating  to the  securities  offered
     therein,  and the offering of such  securities at that time shall be deemed
     to be the initial bona fide offering thereof; and

     (3)  To remove from registration by means of a post-effective amendment any
     of the securities  being  registered which remain unsold at the termination
     of the offering.

     The  undersigned   Registrant  hereby  undertakes  that,  for  purposes  of
determining  any liability  under the Securities Act of 1933, each filing of the
Registrant's  annual  report  pursuant to section  13(a) or section 15(d) of the
Securities  Exchange  Act of  1934  that is  incorporated  by  reference  in the
registration  statement  shall  be  deemed  to be a new  registration  statement
relating to the securities offered therein,  and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

                                      II-2


     The undersigned  Registrant undertakes that: (1) for purpose of determining
any liability under the Securities Act of 1933, the information omitted from the
form of prospectus filed as part of the registration  statement in reliance upon
Rule 430A and contained in a form of prospectus filed by the Registrant pursuant
to Rule 424(b) (1) or (4) or 497(h) under the  Securities Act shall be deemed to
be part of the registration  statement as of the time it was declared effective;
and (2) for the purpose of determining any liability under the Securities Act of
1933, each post-effective  amendment that contains a form of prospectus shall be
deemed to be a new  registration  statement  relating to the securities  offered
therein,  and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.


                                      II-3


                                   SIGNATURES

     Pursuant to the  requirements of the Securities Act of 1933, the Registrant
certifies  that it has  reasonable  grounds to believe  that it meets all of the
requirements  for  filing  on Form S-3 and has  duly  caused  this  Registration
Statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized  in the  City of  Novato,  State  of  California,  this  20th  day of
December, 2002.

                                     BIOMARIN PHARMACEUTICAL INC.

                                     By:  /s/ Fredric D. Price
                                          --------------------
                                          Fredric D. Price
                                          Chairman, Chief Executive Officer and
                                          Director (Principal Executive Officer)

                                POWER OF ATTORNEY

     KNOW ALL  PERSONS  BY THESE  PRESENTS,  that each  person  whose  signature
appears below  constitutes and appoints Fredric D. Price and Louis Drapeau,  and
each of them severally,  as such persons' true and lawful  attorneys-in-fact and
agents for such person and in such person's  name,  place and stead,  in any and
all  capacities,  to  sign  any  and all  amendments  (including  post-effective
amendments) to this Registration  Statement,  and any new Registration Statement
filed under Rule 462(b) of the Securities Act of 1933 and to file the same, with
all exhibits  thereto,  and other  documents in connection  therewith,  with the
Securities and Exchange Commission and any other regulatory authority,  granting
unto said  attorneys-in-fact  and  agents,  full power and  authority  to do and
perform  each and every  act and thing  requisite  and  necessary  to be done in
connection therewith,  as fully to all intents and purposes as such person might
or  could  do  in  person,   hereby  ratifying  and  confirming  all  that  said
attorneys-in-fact  and  agents  may  lawfully  do or cause to be done by  virtue
hereof.

     Pursuant  to  the   requirements  of  the  Securities  Act  of  1933,  this
Registration  Statement on Form S-3 has been signed by the following  persons in
the capacities and on the dates indicated:


                                                                                              


                Signature                                         Title                                   Date
             --------------                                   ------------                             ----------

/s/ Fredric D. Price                       Chairman, Chief Executive Officer and Director           December 20, 2002
-------------------------------------         (Principal Executive Officer)
Fredric D. Price
/s/ Louis Drapeau                          Chief Financial Officer, Vice President Finance and      December 20, 2002
-------------------------------------         Secretary (Principal Financial and
Louis Drapeau                                 Accounting Officer)
/s/ Franz L. Cristiani                     Director                                                 December 20, 2002
-------------------------------------
Franz L. Cristiani
/s/ Phyllis I. Gardner                     Director                                                 December 20, 2002
-------------------------------------
Phyllis I. Gardner, M.D.
/s/ Elaine Heron                           Director                                                 December 20, 2002
-------------------------------------
Elaine Heron, Ph.D.
/s/ Erich Sager                            Director                                                 December 20, 2002
-------------------------------------
Erich Sager
/s/ Vijay Samant                           Director                                                 December 20, 2002
-------------------------------------
Vijay Samant
/s/ Gwynn R. Williams                      Director                                                 December 20, 2002
-------------------------------------
Gwynn R. Williams


                                      II-4


                                                   Exhibit Index


                        

     Exhibit Number                   Description of Document

        5.1**              Opinion of Paul, Hastings, Janofsky & Walker LLP.

       23.1**              Consent of Paul, Hastings, Janofsky & Walker LLP (included with Exhibit 5.1).

       23.2*               Consent of Arthur Andersen LLP.

       24.1                Power of Attorney (included with signatures).



  *  Omitted pursuant to Rule 437a promulgated under the Securities Act of 1933.

  ** To be filed by amendment.

                                      II-5