LEXINGTON, Mass.--(BUSINESS WIRE)--June 7, 2006--Predix Pharmaceuticals, which recently announced a definitive agreement to merge with EPIX Pharmaceuticals (NASDAQ: EPIX - News), announced today that it has initiated a Phase I clinical trial in 18 healthy adult male and female volunteers to study the safety, tolerability, and pharmacokinetics of PRX-07034, a serotonin 5-HT6 antagonist being developed for the treatment of obesity and also for cognitive impairment (associated with Alzheimer’s disease or schizophrenia).