GPC Biotech Reports that Celgene to Terminate Co-Development and License Agreement for Satraplatin

GPC Biotech AG (Frankfurt Stock Exchange: GPC, NASDAQ: GPCB) today reported that the Company has received notice from Celgene Corporation of its decision to terminate its co-development and license agreement with GPC Biotech for satraplatin in Europe, Turkey, the Middle East, Australia and New Zealand. All rights to these territories will be returned to GPC Biotech. Bernd R. Seizinger, M.D., Ph.D., Chief Executive Officer of GPC Biotech said: "We are disappointed, but we understand Celgene’s decision given their recent withdrawal of the Marketing Authorization Application for satraplatin in Europe. We plan to decide in the near future the next steps regarding the development of satraplatin, and we will continue to focus our other efforts on advancing our RGB-286638 kinase inhibitor into the clinic and exploring various merger and acquisition opportunities.” About GPC Biotech GPC Biotech AG is a publicly traded biopharmaceutical company focused on anticancer drugs. GPC Biotech's lead product candidate is satraplatin, an oral platinum compound. The Company has various anti-cancer programs in research and development that leverage its expertise in kinase inhibitors. GPC Biotech AG is headquartered in Martinsried/Munich (Germany) and has a wholly owned U.S. subsidiary in Princeton, New Jersey. For additional information, please visit GPC Biotech's Web site at www.gpc-biotech.com. This press release contains forward-looking statements, which express the current beliefs and expectations of the management of GPC Biotech. Such statements are based on current expectations and are subject to risks and uncertainties, many of which are beyond our control, that could cause future results, performance or achievements to differ significantly from the results, performance or achievements expressed or implied by such forward-looking statements. Actual results could differ materially depending on a number of factors, and we caution investors not to place undue reliance on the forward-looking statements contained in this press release. We direct you to GPC Biotech’s Annual Report on Form 20-F for the fiscal year ended December 31, 2007 and other reports filed with the U.S. Securities and Exchange Commission for additional details on the important factors that may affect the future results, performance and achievements of GPC Biotech. Forward-looking statements speak only as of the date on which they are made and GPC Biotech undertakes no obligation to update these forward-looking statements, even if new information becomes available in the future.