IDH1 and hepatocellular carcinoma: For 43 cases of HCC, the estimated proportional hazard ratios were 79.546 (95% confidence interval, 4.981~1270.295; P = 0.002) for the presence of IDH1 mutation and 18.447 (95% confidence interval, 2.032~167.498; P = 0.010) for pT2 stage.