THE WOODLANDS, Texas--(BUSINESS WIRE)--Opexa Therapeutics, Inc. (NASDAQ:OPXA), a company involved in the development and commercialization of cell therapies, today announced that David McWilliams, Chief Executive Officer, will present at the BIO Investor Forum 2007 on Thursday, October 11, 2007 at 1:00 p.m. (4:00 p.m. ET) at the Palace Hotel in San Francisco, CA. Mr. McWilliams will provide an overview of the Company and an update on its clinical development programs.