KOSN Kosan Biosciences (MM)

HAYWARD, Calif., May 6 /PRNewswire-FirstCall/ -- Kosan Biosciences Incorporated (NASDAQ:KOSN) announced today that Jane Green, Kosan's Vice President, Corporate Communications, will present at the Leerink Swann Solid Tumors Roundtable Conference in New York at the Grand Hyatt Hotel on Friday, May 9, 2008 at 11:10 a.m. EDT. A live webcast of the presentation can be accessed through http://www.wsw.com/webcast/leerink15/kosn/. Interested parties may also access a live webcast of the presentation by visiting the "Events Calendar" page under the "Investors/Press" tab on Kosan's website at http://www.kosan.com/. A recorded replay of the presentations will be available for two weeks. About Kosan Kosan Biosciences is a biotechnology company advancing two new classes of anticancer agents through clinical development -- a Hsp90 (heat shock protein 90) inhibitor and an epothilone. Hsp90 inhibitors have a novel mechanism of action targeting multiple pathways involved in cancer cell growth and survival. Tanespimycin (KOS-953) is being tested in combination with Velcade(R) (bortezomib) in patients with multiple myeloma in a clinical program called TIME. Tanespimycin is also being studied in HER2-positive metastatic breast cancer in combination with Herceptin(R) (trastuzumab). Epothilones inhibit cell division with a mechanism of action similar to taxanes, one of the most successful classes of anti-tumor agents. KOS-1584 is in a Phase 2 clinical trial in patients with non-small cell lung cancer. Kosan's motilin agonist compound, KOS-2187, licensed to Pfizer for development in gastroesophagel reflux disease, is in a Phase 1 trial. For additional information on Kosan Biosciences, please visit the company's website at http://www.kosan.com/. Velcade(R) (bortezomib) is a registered trademark of Millennium Pharmaceuticals, Inc. Herceptin(R) (trastuzumab) is a registered trademark of Genentech, Inc. DATASOURCE: Kosan Biosciences Incorporated CONTACT: Jane Green, VP, Corporate Communications of Kosan Biosciences Incorporated, +1-510-731-5335, or mobile, +1-415-652-4819, Web site: http://www.kosan.com/

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