FRAMINGHAM, Mass.--(BUSINESS WIRE)--GTC Biotherapeutics, Inc. (Nasdaq:GTCB) (“GTC”) announced today that its financial results for the first quarter 2009 will be released on Wednesday, May 13, 2009 followed by a webcast conference call starting at 10:00 a.m. Eastern Time. You may access the live internet broadcast or the subsequent archived recording, on GTC’s website at http://www.gtc-bio.com or access the conference call as follows: