2008 Press Releases

Onyx Pharmaceuticals Announces First Quarter 2008 Financial Results Teleconference And Webcast


EMERYVILLE, Calif. — Apr. 29, 2008

Onyx Pharmaceuticals, Inc. (Nasdaq: ONXX) today announced that it will webcast a teleconference with management to discuss first quarter 2008 financial results and provide a general business overview on Tuesday, May 6, 2008, at 5:00 p.m. Eastern Time (2:00 p.m. Pacific Time). Financial results for the first quarter ended March 31, 2008 will be released earlier that day.

Interested parties may access a live webcast of the presentation on our website at:
http://www.onyx-pharm.com/view.cfm/32/Event-Calendar

or by dialing 630-691-2760 and using the passcode 21488196. A replay of the presentation will be available on the Onyx website or by dialing 630-652-3044 and using the passcode 21488196 approximately one hour after the teleconference concludes. The replay will be available through June 6, 2008.

Onyx Pharmaceuticals, Inc. is a biopharmaceutical company committed to improving the lives of people with cancer by changing the way cancer is treatedTM. The company, in collaboration with Bayer HealthCare Pharmaceuticals, Inc., is developing and marketing Nexavar®, a small molecule drug. Nexavar is currently approved for the treatment of liver cancer and advanced kidney cancer. Additionally, Nexavar is being investigated in several ongoing trials in non-small cell lung cancer, melanoma, breast cancer, and other cancers. For more information about Onyx, visit the company's website at www.onyx-pharm.com.

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