At 3 months of postnatal age, serum NT-proBNP concentrations were higher in infants with BPD-PH (median: 1255, IQR: 621–2135) as compared to those without PH (median: 466, IQR: 372–663 pg/ml; p = 0.023). The gene discussed is NPPB; the disease is bronchopulmonary dysplasia.