ABCG2 and pulmonary hypertension, primary, 1: Compared to those in IVCHT-PHT- patients, the pentose phosphate pathway, butanoate metabolism, glycolysis/gluconeogenesis, dioxin degradation, ABC transporters, glycine, serine and threonine metabolism related to carbohydrate, xenobiotics biodegradation and metabolism, membrane transport, and amino acid metabolism were significantly enriched in IVCHT-PHT+, IVCHT+PHT-, and IVCHT+PHT+ patients.