CCDC80 and pulmonary arterial hypertension: Although TSHZ2 and CCDC80 had a powerful discrimination ability (AUCTSHZ2 = 0.977; AUCCCDC80 = 0.833) in GSE53408 (Figure 3B), we did not select these two genes, due to the sequence uncertainty of TSHZ2 and the certainty of the correlation between CCDC80 and PAH.