SOUTH SAN FRANCISCO, Calif.--(BUSINESS WIRE)--Hyperion Therapeutics, Inc. today announced that its investigational product HPN-100 (glycerol phenylbutyrate) has received orphan product designation from the U.S. Food and Drug Administration for intermittent or chronic treatment of patients with cirrhosis and any grade of hepatic encephalopathy. The Company is planning to initiate a phase II clinical program in this indication later this year.
