RegeneRx Biopharmaceuticals, Inc., a biopharmaceutical company, develops pharmaceuticals from Thymosin beta 4 (Tß4) for tissue protection, repair, and regeneration. The company is developing RGN-259, a sterile and preservative-free eye drop that has completed Phase 3 clinical trial for the treatment of dry eye syndrome and neurotrophic keratitis. It has strategic partnerships with Lee’s Pharmaceutical Group for the development and marketing of Tß4-related products; and HLB Therapeutics for the development and marketing of RGN-259, and RGN-137 for dermal wound healing. The company was formerly known as Alpha 1 Biomedicals, Inc. and changed its name to RegeneRx Biopharmaceuticals, Inc. in December 2000. RegeneRx Biopharmaceuticals, Inc. was incorporated in 1982 and is based in Rockville, Maryland.