label: heritable pulmonary arterial hypertension
label_lc: heritable pulmonary arterial hypertension
description: Heritable pulmonary arterial hypertension (HPAH) is a form of pulmonary arterial hypertension (PAH), occurring due to mutations in PAH predisposing genes or in a familial context. HPAH is characterized by elevated pulmonary arterial resistance leading to right heart failure. HPAH is progressive and potentially fatal.