SAN DIEGO--(BUSINESS WIRE)--iTherX Pharmaceuticals Inc, a privately held biopharmaceutical company developing novel antiviral products, today announced that it will initiate a Phase 2a clinical study of ITX5061, a potential therapy targeted at inhibiting the entry of the Hepatitis C virus (HCV) into liver cells. The placebo-controlled, randomized trial is a parallel-group dose-response study of the ability of ITX5061 to reduce viral load in treatment-naive and previously treated patients with HCV infection, when ITX5061 is administered as a single agent.