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Exhibit 23.1
CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
We consent to the incorporation by reference in this Registration
Statement (Form S-8) pertaining to the 1996 Equity Incentive Plan, as
amended, the 1996 Non-Employee Directors' Stock Option Plan, as amended, and
the Employee Stock Purchase Plan, as amended, of ONYX Pharmaceuticals, Inc.
of our report dated February 18, 2000, with respect to the financial
statements of ONYX Pharmaceuticals, Inc., included in the Annual Report (Form
10-K) for the year ended December 31, 1999, filed with the Securities and
Exchange Commission.
/s/ Ernst & Young LLP
Palo Alto, California
October 16, 2000
