Overview The Effect of Tracleer® on Male Fertility Status: Completed Trial end date: 2007-11-01 Target enrollment: Participant gender: Summary The objective of the study is to evaluate the effects of chronic TRACLEER® treatment on testicular function via semen analysis in male patients with primary pulmonary arterial hypertension (PAH). Phase: Phase 4 Details Lead Sponsor: ActelionTreatments: Bosentan