Any primary pulmonary hypertension in which the cause of the disease is a mutation in the CAV1 gene. The disease is pulmonary hypertension, primary, 3 (MONDO_0014135, a Monarch Disease Ontology identifier). Also known as: CAV1 primary pulmonary hypertension, primary pulmonary hypertension caused by mutation in CAV1, pulmonary hypertension, primary, type 3.