Amgen Announces Plans for Epratuzumab

THOUSAND OAKS, Calif., Nov. 11 -- Amgen Inc. (Nasdaq: AMGN) today announced its decision not to commence a registration study in non-Hodgkin's lymphoma and plans to seek another party for the development and commercialization of its rights to epratuzumab. These plans follow a review of the current facts and circumstances regarding the product candidate, Amgen's assessment of its portfolio and other available opportunities. Epratuzumab is currently being developed by Amgen in North America and by Immunomedics, Inc. in Europe for the treatment of indolent and aggressive non-Hodgkin's lymphoma.

About Amgen

Amgen is a global biotechnology company that discovers, develops, manufactures and markets important human therapeutics based on advances in cellular and molecular biology.

Forward-looking Statements

This news release contains forward-looking statements that involve significant risks and uncertainties, including those discussed below and others that can be found in Amgen's Form 10-K for the year ended December 31, 2002, and in Amgen's periodic reports on Form 10-Q and Form 8-K. Amgen is providing this information as of the date of this news release and does not undertake any obligation to update any forward-looking statements contained in this document as a result of new information, future events or otherwise.

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In addition, while Amgen routinely obtain patents for its products and technology, the protection offered by its patents and patent applications may be challenged, invalidated or circumvented by its competitors. Further, some raw materials, medical devices and component parts for Amgen's products are supplied by sole third party suppliers.

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