EFNA4 and hepatocellular carcinoma: The DSS results of Kaplan-Meier analysis indicated that the expression of EFNA1 (p = 0.002), EFNA3 (p = 0.001), EFNA4 (p = 0.001), EFNA5 (p = 0.027), and EFNB1 (p = 0.004) was negatively correlated with DSS in patients with HCC (Supplementary Figure S2B).