Genetic Counseling and Testing in Pulmonary Arterial Hypertension.

A subgroup of patients diagnosed with pulmonary arterial hypertension (PAH) carry transmissible pathogenic gene mutations. For many of these patients, the heritable nature of their disease can only be uncovered by genetic testing. Because identification of PAH patients who carry pathogenic gene mutations has important implications for other family members, genetic counseling and testing should be offered to patients diagnosed with idiopathic or familial PAH. This review describes the current state of genetic counseling and testing for patients diagnosed with PAH.