MIAMI, FL--(MARKET WIRE)--Jul 12, 2007 -- DOR BioPharma, Inc. (OTC BB:DORB.OB - News) (DOR or the Company) announced today that patient enrollment is commencing in a randomized, double blinded, placebo controlled Phase 2 clinical trial of orBec® for the prevention of acute graft-versus-host disease (GVHD) after allogeneic hematopoietic cell transplantation (HCT) with myeloablative conditioning regimens. The trial is being conducted by Paul Martin, MD at the Fred Hutchinson Cancer Research Center in Seattle, WA and is being supported, in large part, by a National Institute of Health (NIH) grant.