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BioMarin Licenses Technology From Leading Cystic Fibrosis Research Laboratory at the University of California, San Francisco
Molecular Chaperones Target Underlying Defect in Cystic Fibrosis; CFTR Folding and Transport
NOVATO, Calif., Aug 22, 2007 /PRNewswire-FirstCall via COMTEX News Network/ -- BioMarin Pharmaceutical Inc. (Nasdaq and SWX: BMRN) announced today that it has licensed from the University of California, San Francisco (UCSF) intellectual property covering compounds demonstrated to improve cystic fibrosis transmembrane conductance regulator (CFTR) protein functionality. BioMarin expects the lead compounds to undergo additional animal testing and optimization, with the goal of filing an IND in 2009.

Emil Kakkis, M.D., Ph.D., Chief Medical Officer of BioMarin commented. "Dr. Verkman's laboratory has performed pioneering work in the field of CFTR modulation. The compounds licensed have been developed through a rigorous high-throughput screening process and have demonstrated a high degree of potency and specificity for the folding and activation of the abnormal CFTR protein. We look forward to accelerating the lead optimization activities in collaboration with Dr. Verkman and his colleagues so that we can take the very best of these molecules into clinical development."

"Over the last decade, considerable efforts and funding from the Cystic Fibrosis Foundation and the biotechnology industry have resulted in the development of therapeutics that have significantly extended and improved the lives of cystic fibrosis patients," said Dr. Alan Verkman, Professor of Medicine and Physiology and Director of the Cystic Fibrosis Research Development Program at the University of California, San Francisco. "Despite this progress, there is no therapeutic approved that addresses the underlying molecular defect in cystic fibrosis, and most patients succumb to respiratory failure as young adults. BioMarin has a strong track record of aggressively moving disease modifying therapeutics through clinical development, and I am very pleased that they have made a commitment to further this important work."

"We are pleased to add this program to our growing product development pipeline. The cystic fibrosis indication aligns well with our existing product portfolio and core competencies as it is a well-defined and relatively large orphan disease," said Jean-Jacques Bienaime, Chief Executive Officer of BioMarin. "It has a clear clinical and regulatory path and will allow us to leverage our commercial infrastructure targeting specialists."

Cystic fibrosis is an autosomal recessive disease caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene. With an incidence of approximately 1/3,500 births, cystic fibrosis is the most common, lethal genetic disease in the U.S. CF affects an estimated 30,000 patients in the U.S. and approximately 40,000 patients outside the U.S. CFTR is a transmembrane protein that functions primarily as a chloride channel in the plasma membrane of epithelial cells. The most common mutation in cystic fibrosis, the deltaF508 mutation, causes the protein to be misfolded and through a cascade of events, leads to mucus buildup and ultimately, organ dysfunction and severe infections in the lungs. The median age of survival of a CF patient is 36.5 years.

About BioMarin

BioMarin develops and commercializes innovative biopharmaceuticals for serious diseases and medical conditions. The company's product portfolio is comprised of two approved products and multiple clinical and preclinical product candidates. Approved products include Naglazyme(R) (galsulfase) for mucopolysaccharidosis VI (MPS VI), a product wholly developed and commercialized by BioMarin, and Aldurazyme(R) (laronidase) for mucopolysaccharidosis I (MPS I), a product which BioMarin developed through a 50/50 joint venture with Genzyme Corporation. Investigational product candidates include Kuvan(TM) (sapropterin dihydrochloride), a Phase 3 product candidate for the treatment of phenylketonuria (PKU), and 6R-BH4 for cardiovascular indications, which is currently in Phase 2 clinical development for the treatment of peripheral arterial disease and sickle cell disease. For additional information, please visit http://www.BMRN.com. Information on BioMarin's website is not incorporated by reference into this press release.

Forward-Looking Statement

This press release contains forward-looking statements about the business prospects of BioMarin Pharmaceutical Inc., including, without limitation, statements about: BioMarin's products and product candidates, commercialization of BioMarin's products; and actions by regulatory authorities. These forward-looking statements are predictions and involve risks and uncertainties such that actual results may differ materially from these statements. These risks and uncertainties include, among others: our success in the commercialization of BioMarin's products; the content and timing of decisions by the U.S. Food and Drug Administration, the European Commission and other regulatory authorities concerning each of the described products and product candidates; and those factors detailed in BioMarin's filings with the Securities and Exchange Commission, including, without limitation, the factors contained under the caption "Risk Factors" in BioMarin's 2006 Annual Report on Form 10-K, as amended, and the factors contained in BioMarin's reports on Form 10-Q and Form 8-K. Stockholders are urged not to place undue reliance on forward-looking statements, which speak only as of the date hereof. BioMarin is under no obligation, and expressly disclaims any obligation to update or alter any forward-looking statement, whether as a result of new information, future events or otherwise.

BioMarin(R) and Naglazyme(R) are a registered trademarks of BioMarin Pharmaceutical Inc.

Aldurazyme(R) is a registered trademark of BioMarin/Genzyme LLC.

    Orapred(R) is a registered trademark of Medicis Pediatrics, Inc. and is
used under license.

    Contact:

    Investors                                     Media
    Eugenia Shen                                  Susan Berg
    BioMarin Pharmaceutical Inc.                  BioMarin Pharmaceutical Inc.
    (415) 506-6570                                (415) 506-6594

SOURCE BioMarin Pharmaceutical Inc.

investors, Eugenia Shen, +1-415-506-6570, or media, Susan Berg, +1-415-506-6594, both
of BioMarin Pharmaceutical Inc.
http://www.bmrn.com/
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