MARTINSRIED/MUNICH, Germany & PRINCETON, N.J.--(BUSINESS WIRE)--GPC Biotech AG (Frankfurt Stock Exchange: GPC; NASDAQ: GPCB) today announced that it will hold a conference call on Wednesday, August 13, 2008 to discuss its financial results for the second quarter and first half of 2008. The results will be published on August 13th in advance of the call.