Onyx Pharmaceuticals Announces Third Quarter 2006 Financial Results Teleconference And Webcast

EMERYVILLE, Calif. — Nov. 01, 2006, Onyx Pharmaceuticals, Inc. (Nasdaq: ONXX) today announced that it will webcast a teleconference with management to discuss third quarter 2006 financial results and provide a general business overview on Tuesday, November 7, 2006, at 5:00 p.m. Eastern Time (2:00 p.m. Pacific Time). Financial results for the third quarter ended September 30, 2006 will be released earlier that day.

Interested parties may access a live webcast of the presentation at:
http://audioevent.mshow.com/312557/

or by dialing 706-758-9355 and using the passcode 1239796. A replay of the presentation will be available on the Onyx website or by dialing 706-645-9291 and using the passcode 1239796 approximately one hour after the teleconference concludes. The replay will be available through December 7, 2006.

Onyx Pharmaceuticals, Inc. is a biopharmaceutical company developing innovative therapies that target the molecular mechanisms that cause cancer. The company is developing Nexavar®, a small molecule drug, with Bayer Pharmaceuticals Corporation. Nexavar has been approved for the treatment of advanced kidney cancer. For more information about Onyx’s pipeline and activities, visit the company’s web site at: www.onyx-pharm.com.

Nexavar® (sorafenib) tablets is a registered trademark of Bayer Pharmaceuticals Corporation.

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Onyx Pharmaceuticals, Inc.

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