EX-23.1 5 dex231.txt CONSENT OF ERNST & YOUNG LLP EXHIBIT 23.1 CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS We consent to the incorporation by reference in the Registration Statement (Form S-8) of Amgen Inc. for the registration of 12,000,000 shares of Common Stock of our report dated February 26, 2002 with respect to the consolidated financial statements of Amgen Inc., included in its Annual Report (Form 10-K) for the year ended December 31, 2001, filed with the Securities and Exchange Commission. ERNST & YOUNG LLP Los Angeles, California March 6, 2002