Gilead Announces Posting of FDA Briefing Documents for August 6 Advisory Committee Review of Adefovir Dipivoxil for Chronic Hepatitis B

FOSTER CITY, Calif., Aug 5, 2002 (BUSINESS WIRE) -- Gilead Sciences, Inc. (Nasdaq:GILD) announced that the U.S. Food and Drug Administration (FDA) will post on its web site (www.fda.gov) today the agency's background package related to the company's New Drug Application (NDA) for adefovir dipivoxil 10 mg for the treatment of chronic hepatitis B. These documents include the company's and FDA's data summaries for the August 6, 2002 Antiviral Drugs Advisory Committee hearing during which the adefovir dipivoxil NDA will be reviewed. The hearing is an open, public forum for presentation and discussion of relevant scientific information contained in the adefovir dipivoxil NDA. The meeting will be held from 8:00 a.m. - 5:00 p.m. Eastern Time at the Holiday Inn in Bethesda, Maryland.

Adefovir dipivoxil is an investigational oral antiviral agent for the treatment of chronic hepatitis B that was granted a six-month priority review by the FDA. Adefovir dipivoxil works by blocking hepatitis B virus (HBV) DNA polymerase, an enzyme crucial to the replication of HBV in the body. Gilead also has filed applications for marketing approval of adefovir dipivoxil in the European Union and Canada.

Gilead Sciences, Inc. is a biopharmaceutical company that discovers, develops and commercializes therapeutics to advance the care of patients suffering from life-threatening diseases worldwide. The company has five marketed products and focuses its research and clinical programs on anti-infectives, including antivirals, antifungals and antibacterials. Headquartered in Foster City, Calif., Gilead has operations in the United States, Europe and Australia.

For more information on Gilead Sciences, please visit the company's Web site at www.gilead.com or call the Gilead Public Affairs Department at 1-800-GILEAD-5 (1-800-445-3235).

CONTACT:          Gilead Sciences, Inc.
                  Susan Hubbard, 650/522-5715 (Investors)
                  Erin Edgley, 650/522-5635 (Media)

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