United Therapeutics

This study looks at the long-term safety of an inhaled medication called treprostinil for people with fibrotic lung diseases like idiopathic pulmonary fibrosis. About 1,850 adults who completed a prior related study will take the drug and be monitored for side effects. The goal i…

This study tests whether quickly starting and increasing a medication called treprostinil can lower blood pressure in the lungs and improve the heart's pumping ability in people with pulmonary arterial hypertension (PAH). The trial involves 52 adults with PAH and will measure cha…

This study looks at the long-term safety of the drug ralinepag in people with pulmonary arterial hypertension (PAH), a serious lung condition that makes it hard to breathe. About 1,000 adults who were in earlier ralinepag studies can join. The goal is to see if the drug remains s…

This study is a patient registry that follows 300 adults with pulmonary arterial hypertension (PAH) who are starting or recently started Orenitram. Researchers will track how well patients tolerate the drug and how it affects their daily function and symptoms over 78 weeks. The g…