Overview Evaluation of Fontan-associated Hepatic Stiffness and the Efficacy of Udenafil in Reducing Liver Stiffness Status: COMPLETED Trial end date: 2020-09-16 Target enrollment: Participant gender: Summary A study to evaluate the efficacy of MZ101 therapy in reducing liver stiffness.Phase: PHASE3 Details Lead Sponsor: Mezzion Pharma Co. LtdCollaborator: National Heart, Lung, and Blood Institute (NHLBI)Treatments: udenafil