Pulmonary arterial hypertension (PAH) in one of the following groups: Idiopathic PAH research hub

A Phase 2/3, Multicenter, Randomized, Double-blind, Placebo-Controlled, Adaptive Design Study to Evaluate the Efficacy and Safety of MK-5475 in Adults with Pulmonary Arterial Hypertension

This study is looking into a new medication called MK-5475 for adults with a serious lung condition called pulmonary arterial hypertension (PAH). Researchers want to see if it's safe and helps improve how far people can walk and how their lungs and heart are working.