News and Events





GTC BIOTHERAPEUTICS TO HOST THIRD QUARTER 2006 EARNINGS CALL AND WEBCAST ON THURSDAY, NOVEMBER 2, 2006

Framingham, Mass., October 27, 2006-- GTC Biotherapeutics, Inc. (Nasdaq: GTCB) ("GTC") announced today that its financial results for the third quarter 2006 will be released on Thursday, November 2, 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 November 2 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 as follows:

Live Call - In the United States, dial 1-866-277-1182
Outside the United States, dial 1-617-597-5359
Reference call ID: when prompted 47892493

Audio Archive - In the United States, dial 1-888-286-8010
Outside the United States, dial 1-617-801-6888
Reference call ID: when prompted 20671771

NOTE: a replay of the call will be available one hour following the end of the call and will be accessible until November 9, 2006.

The earnings webcast is also being distributed over CCBN's Investor Distribution Network to both institutional and individual investors. Individual investors can listen to the call through CCBN's individual investor center at www.earnings.com or by visiting any of the investor sites in CCBN's Individual Investor Network. Institutional investors can access the call via CCBN's password-protected event management site, StreetEvents (www.streetevents.com).

About GTC Biotherapeutics
GTC Biotherapeutics develops, produces, and commercializes therapeutic proteins through transgenic animal technology. GTC obtained the first approval of a transgenically derived product anywhere in the world in August 2006. ATrynŽ, GTC's recombinant form of human antithrombin, was approved by the European Commission for use in patients with a hereditary antithrombin deficiency undergoing surgical procedures. ATrynŽ is in phase III studies to support a filing in the United States requesting approval in the hereditary deficiency indication. GTC is also working with LEO Pharma A/S of Denmark to develop ATrynŽ as a potential treatment for disseminated intravascular coagulation (DIC) in conjunction with severe sepsis as well as launch ATrynŽ commercially in Europe. A phase II study in DIC is planned to commence at the end of 2006. In addition, GTC established a strategic collaboration with LFB Biotechnologies of France in October 2006 to jointly develop recombinant forms of human plasma proteins and monoclonal antibodies. Building on initial research performed by LFB, the first program of the collaboration will be to develop recombinant human factor VIIa as a potential treatment for hemophilia with inhibitors. GTC has also recently been granted a patent in the United States for the production of any therapeutic protein in the milk of any transgenic mammal. GTC's transgenic production platform is particularly well suited to enabling cost effective development of proteins that are difficult to express in traditional recombinant production systems as well as those that are required in large volumes. Additional information is available on the GTC web site,http://www.gtc-bio.com.

CONTACT:
GTC Biotherapeutics, Inc.
Thomas E. Newberry
Vice President, Corporate Communications
(508) 370-5374

Feinstein Kean Healthcare for GTC Biotherapeutics, Inc.
Francesca DeVellis
(617) 577-8110



Copyright 2006 GTC Biotherapeutics, All Rights Reserved
events and presentations press release archives press release archives press release archives subscribe subscribe subscribe GTC in the News GTC in the News GTC in the News GTC in the News GTC in the News