In addition, we evaluated the correlation between the gene mRNA expression levels and the HCC survival based on the Kaplan–Meier Plotter database, showing that higher mRNA expression level of NEURL1B, CNTN1, and FCER2 were associated with a better OS (HR = 0.73, 95% CI = 0.5–1.05, p = 0.089; HR = 0.4, 95% CI = 0.29–0.57, p = 1.2 × 10−7; HR = 0.67, 95% CI = 0.46–0.99, p = 0.044, respectively, Figure 5). This evidence concerns the gene CNTN1 and hepatocellular carcinoma.