Compared to the control group (5.15 (3.0–7.95 pg/mL)) and ASD-PAH group (7.30 (4.10–13.50 pg/mL)), bio-ADM levels were significantly higher in the I/H-PAH group (median (interquartile range (IQR)): 15.50 (7.50–24.10 pg/mL)). This evidence concerns the gene ADM and pulmonary arterial hypertension.