PF-07868489

A Study to Learn About the Study Medicine Called PF-07868489 in Healthy Adult People and in People With Pulmonary Arterial Hypertension

C5001001 - A Phase 1/2, Randomized, Double-blind, Placebo-controlled Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Single Escalating Doses of PF-07868489 in Healthy Adult Participants And, Additionally, Clinical Activity of Repeat Doses in Participants With Pulmonary Arterial Hypertension

A Study to Learn About the Study Medicine (Called PF-07868489) in People With Pulmonary Arterial Hypertension Who Have Previously Participated in a Clinical Study With PF-07868489

C5001004 - A Phase 2, Open-Label Extension Study to Investigate the Safety and Efficacy of PF-07868489 Administered to Adult Participants With Pulmonary Arterial Hypertension