ROCKVILLE, Md.--(BUSINESS WIRE)--RegeneRx Biopharmaceuticals, Inc. (OTC Bulletin Board: RGRX) (“the Company” or “RegeneRx”) has announced that it is set to begin a Phase 2 clinical trial in 72 patients with dry eye syndrome. The Company anticipates enrollment of the first patients on August 13th, and expects preliminary data from the study to be available in October 2011. The trial is a double-masked, placebo-controlled trial testing the safety and efficacy of RGN-259, the Company’s proprietary preservative-free eye drops, against a placebo. Patients will receive RGN-259 or placebo twice daily for 30 days. Signs and symptoms of dry eye, such as the degree of ocular surface damage, ocular itching, burning and inflammation, among others, will be measured periodically during the treatment period. The trial will be conducted by ORA Inc., an ophthalmic contract research organization that specializes in dry eye research and clinical trials. Additional details regarding the Phase 2 trial may be seen online at: