2007 Press Releases

Onyx Pharmaceuticals Announces A Teleconference And Webcast To Provide An Update On Nexavar


EMERYVILLE, Calif. — Feb. 12, 2007

Onyx Pharmaceuticals, Inc. (Nasdaq: ONXX) today announced that it will host a conference call on Monday, February 12, 2007, at 10:00 a.m. Eastern Time (7:00 a.m. Pacific Time) to provide an update on Nexavar® (sorafenib) tablets.

Interested parties may access the live teleconference at:
http://audioevent.mshow.com/322954

or by dialing 706-758-9355 and using the passcode 8490285. A replay of the teleconference will be available on the Onyx website or by dialing 706-645-9291 and using the passcode 8490285 approximately one hour after the teleconference concludes. The replay will be available through March 12, 2007.

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.