2. A confirmed diagnosis of Pulmonary Hypertension Group 1 (PAH) who have either idiopathic PAH (IPAH), heritable PAH, anorexigen-induced PAH, associated PAH (APAH) with connective tissue disease (CTD), APAH with repaired simple congenital systemic to pulmonary shunt (i.e., atrial septal defect [ASD], ventricular septal defect [VSD] and/or patent ductus arteriosus [PDA]; complete repair at least 1 year prior to Screening) or APAH with human immunodeficiency virus (HIV)