FRAMINGHAM, Mass.--(BUSINESS WIRE)--July 27, 2006--GTC Biotherapeutics, Inc. (Nasdaq:GTCB - News; "GTC") announced today that its financial results for the second quarter 2006 will be released on Thursday, August 3, 2006, before the Nasdaq market opens. Geoffrey F. Cox, Ph.D., Chairman of the Board, Chief Executive Officer and President, will lead the call on August 3 starting at 10:00 a.m. Eastern time to discuss these results and the Company's drug development progress.