Although there was no significant difference in survival time between the two groups (HR = 2.139, 95% CI: 0.889–5.154, p = 0.069), there was a tendency for the survival time of the lncRNA CASC7 low expression group to be longer than that of the lncRNA CASC7 high expression group (Supplementary Fig. 1), which suggested that lncRNA CASC7 may have some value in determining the prognosis of HCC. This evidence concerns the gene AGO2 and hepatocellular carcinoma.