It was reported that a missense variation in the TNIP2 gene was found in two patients with pulmonary arterial hypertension (50) (PAH), indicating TNIP2 also has a role in BPD, as about 25% of infants with moderate to severe BPD would develop BPD-PAH (51). The gene discussed is TNIP2; the disease is pulmonary arterial hypertension.