Overview Phase III Randomized Study of UT-15 in Patients With Primary Pulmonary Hypertension Status: Completed Trial end date: 2000-09-01 Target enrollment: Participant gender: Summary OBJECTIVES: I. Determine the safety and efficacy of UT-15 in patients with severe symptomatic primary pulmonary hypertension. Phase: Phase 3 Details Lead Sponsor: United TherapeuticsTreatments: Treprostinil