AFP and hepatocellular carcinoma: Specifically, for recipients with AFP levels of 400 ng/ml or more, 62 recipients in IBSA group and 222 recipients in non-IBSA group enrolled, the risk of HCC recurrence remained significantly higher in the IBSA group relative to the non-IBSA group [HR=1.909 (1.157–3.148), P=0.011, as indicated in Fig. 4E].