IGF1 and pulmonary arterial hypertension: Genetic variants of platelet count (OR=2.51, 95% CI 1.56-4.22, P<0.001), platelet crit(OR=1.87, 95% CI1.17-7.65, P=0.022), DBIL(OR=1.71, 95%CI1.18-2.47,P=0.004), IGF-1(OR=0.51, 95% CI0.27-0.96, P=0.038), Lp(a) (OR=0.66, 95% CI0.45-0.98, P=0.037) and TBIL(OR=0.51, 95% CI0.27-0.96, P=0.038) were associated with PAH.