Parth M. Rali, MD, FCCP, Director of the Temple University Health System Pulmonary Embolism Response Team (PERT) Program, Section Temple Lung Pulmonary Vascular Disease Program, provided perspective for a Medscape article on new data from the ADVANCE Outcomes study presented at the ATS International Conference that showed ralinepag reduced the risk for clinical disease worsening by 55 percent compared to placebo in patients with pulmonary arterial hypertension (PAH). Rali was not involved in the study.