Monday, May 22, 2006

Genentech Announces June 5 Webcast Discussion of Data Presented at ASCO

South San Francisco, Calif. -- May 22, 2006 --

Genentech, Inc. (NYSE:DNA) invites investors, the media and the general public to listen to an audio webcast discussing data presented during the 42nd Annual Meeting of the American Society of Clinical Oncology (ASCO) in Atlanta, Georgia.

The live webcast will begin at 4:00 p.m. Pacific Time on June 5, 2006. The webcast can be accessed on Genentech's web site at http://www.gene.com and will be archived and available for replay until 5:00 p.m. Pacific Time on June 12, 2006. A telephonic replay will also be available beginning at 7:00 p.m. Pacific Time on June 5, 2006 through 5:00 p.m. Pacific Time on June 12, 2006. Access numbers for this replay are: 1-800-642-1687 (U.S./Canada) and 1-706-645-9291 (international); Conference ID number is 9488185.

About Genentech
Founded 30 years ago, Genentech is a leading biotechnology company that discovers, develops, manufactures, and commercializes biotherapeutics for significant unmet medical needs. A considerable number of the currently approved biotechnology products originated from or are based on Genentech science. Genentech manufactures and commercializes multiple biotechnology products and licenses several additional products to other companies. The company has headquarters in South San Francisco, Calif., and is listed on the New York Stock Exchange under the symbol DNA. For additional information about the company, please visit http://www.gene.com

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