GPC Biotech (GPCBY) 6-K GPC Biotech Ag

Exhibit 99.2

GPC Biotech AG

Fraunhoferstr. 20

85212 Martinsried/Planegg

Deutschland

ISIN: DE 0005851505 // WKN: 585 150

- Publication according to Sec. 26 para. 1 WpHG -

In a letter dated September 10, 2007, Lehman Brothers International (Europe), London, United Kingdom, informed us that as at the close of business on 4^th September 2007, it held 227,500 ordinary shares of GPC Biotech AG (WKN 585 150, ISIN DE0005851505). This represents a crossing below the 3% threshold which equates to 0.62% of the outstanding share capital of GPC Biotech AG.

Martinsried/Planegg, September 12, 2007

GPC Biotech AG

The Management Board

Contact:

GPC Biotech AG

Martin Brändle

Director, Investor Relations & Corporate Communications

Phone: +49 (0)89 8565-2693

ir@gpc-biotech.com