The m7G risk score of each HCC patient was calculated according to the following formula (Figure 2F): m7G risk score = 0.249 *  (WDR4 relative expression) + 0.334 *  (EIF4E relative expression) + 0.065 *  (NCBP1 relative expression) + 0.275 *  (NCBP2 relative expression) + 0.011 *  (NUDT1 relative expression). The gene discussed is NUDT1; the disease is hepatocellular carcinoma.