BETHESDA, Md.--(BUSINESS WIRE)--RegeneRx Biopharmaceuticals, Inc. (AMEX:RGN), today announced that it will hold a conference call on Tuesday, July 31, 2007, at 4:30 p.m. Eastern Time (3:30 p.m. Central Time) to provide an update on its clinical trials program and other related information. The conference call will be accessible by telephone and through the Internet. Interested individuals are invited to access the call by dialing 800-565-5442. To participate on the webcast, log on to the company’s website at www.regenerx.com or www.viavid.net 15 minutes before the call to download the necessary software.