GPC Biotech to Present at Two Upcoming Conferences: Deutsches Eigenkapitalforum in Frankfurt and Piper Jaffray 18th Annual Health Care Conference in New York

Martinsried/Munich (Germany), Waltham, Mass. and Princeton, N.J., November 22, 2006 –
GPC Biotech AG (Frankfurt Stock Exchange: GPC; TecDAX index; NASDAQ: GPCB) today announced that the Company will give a corporate presentation at the upcoming “Deutsches Eigenkapitalforum” in Frankfurt, Germany, as well as at the “Piper Jaffray 18th Annual Health Care Conference” in New York City.



The presentation at the “Deutsches Eigenkapitalforum” is scheduled for Tuesday, November 28, 2006 at 11:15 AM CET at the Congress Center in Frankfurt, Germany.

The presentation at the Piper Jaffray conference will take place on Wednesday, November 29, 2006 at 10:30 AM EST/16:30 CET at The Pierre Hotel in New York, NY.



Both presentations will be webcast live and will be accessible through the GPC Biotech Web site at www.gpc-biotech.com. A replay will also be available via the Web site.



GPC Biotech AG is a publicly traded biopharmaceutical company focused on discovering, developing and commercializing new anticancer drugs. GPC Biotech’s lead product candidate – satraplatin – is an oral platinum-based compound that has shown highly statistically significant results for progression-free survival in a Phase 3 registrational trial as a second-line chemotherapy treatment in hormone-refractory prostate cancer. The U.S. FDA has granted fast track designation to satraplatin for this indication, and the rolling NDA submission process for this compound is underway. GPC Biotech is also developing a monoclonal antibody with a novel mechanism-of-action against a variety of lymphoid tumors, currently in Phase 1 clinical development, and has ongoing drug development and discovery programs that leverage its expertise in kinase inhibitors. GPC Biotech AG is headquartered in Martinsried/Munich (Germany), and its wholly owned U.S. subsidiary has sites in Waltham, Massachusetts and 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 AG, including summary statements relating to topline results of the SPARC trial and summary statements relating to the potential efficacy and safety profile of satraplatin. 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. In particular, there can be no guarantee that topline results from the clinical trial discussed in this press release will be confirmed upon full analysis of the results of the trial and additional information relating to the safety, efficacy or tolerability of satraplatin may be discovered upon further analysis of data from the SPARC trial or analysis of additional data from other ongoing clinical trials for satraplatin. Furthermore, even if these topline results are confirmed upon full analysis of the trial, we cannot guarantee that satraplatin will be approved for marketing in a timely manner, if at all, by regulatory authorities nor that, if marketed, satraplatin will be a successful commercial product. We direct you to GPC Biotech’s Annual Report on Form 20-F for the fiscal year ended December 31, 2005 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 does not undertake any obligation to update these forward-looking statements, even if new information becomes available in the future.



The scientific information discussed in this press release related to satraplatin is preliminary and investigative. Satraplatin has not yet been approved by the FDA in the U.S., the EMEA in Europe or any other regulatory authority and no conclusions can or should be drawn regarding its safety or effectiveness. Only the relevant regulatory authorities can determine whether satraplatin is safe and effective for the use(s) being investigated.

Contact Information

Martin Braendle

Director, Investor Relations & Corporate Communications

GPC Biotech AG

Contact via E-mail