Medarex Receives Milestone Payment for Investigational Antibody Targeting Integrin Receptors

Medarex, Inc. (Nasdaq: MEDX) today announced that it has received a milestone payment of an undisclosed amount from its licensing partner, Centocor R&D Inc., for the completion of a Phase 2 trial of CNTO 95, a fully human antibody targeting the integrin receptors that are implicated in tumor-induced angiogenesis. The CNTO 95 human antibody was generated using Medarex's UltiMAb(R) technology. Medarex may receive future milestone payments and royalties should this product candidate progress to commercialization and achieve commercial sales.

"We are pleased with the progress of this program and the potential of technology licensing programs under our partnership with Centocor to contribute to future revenues," said Howard H. Pien, President and CEO of Medarex.

About Medarex

Medarex is a biopharmaceutical company focused on the discovery, development and potential commercialization of fully human antibody-based therapeutics to treat life-threatening and debilitating diseases, including cancer, inflammation, autoimmune disorders and infectious diseases. Medarex applies its UltiMAb(R) technology and product development and clinical manufacturing experience to generate, support and potentially commercialize a broad range of fully human antibody product candidates for itself and its partners. Over forty of these therapeutic product candidates derived from Medarex technology are in human clinical testing or have had INDs submitted for such trials, with the most advanced product candidates currently in Phase 3 clinical trials or the subject of regulatory applications for marketing authorization. Medarex is committed to building value by developing a diverse pipeline of antibody products to address the world's unmet healthcare needs. For more information about Medarex, visit its website at http://www.medarex.com.

Medarex Statement on Cautionary Factors

Except for the historical information presented herein, matters discussed herein may constitute forward-looking statements, as defined in the Private Securities Litigation Reform Act of 1995, that are subject to certain risks and uncertainties that could cause actual results to differ materially from any future results, performance or achievements expressed or implied by such statements. Statements that are not historical facts, including statements preceded by, followed by, or that include the words "may" or "potential" or similar statements are forward-looking statements. Medarex disclaims, however, any intent or obligation to update these forward-looking statements. Risks and uncertainties include those risks detailed from time to time in Medarex's public disclosure filings with the U.S. Securities and Exchange Commission (SEC), including its Annual Report on Form 10-K for the fiscal year ended December 31, 2007 and its quarterly reports on Form 10-Q. Copies of Medarex's public disclosure filings are available from its investor relations department.

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