GERMANTOWN, Md.--(BUSINESS WIRE)--Psyadon Pharmaceuticals, Inc. announces today the opening of a clinical research site at the University of California at San Diego headed by Dr. William Nyhan. He joins Dr. Hyder Jinnah at Emory University to study the safety and tolerability of different doses of ecopipam in adults (group 1), adolescents (group 2) and children (group 3) with Lesch-Nyhan Disease (LND).