In this model, the following formula was used to calculate the risk score for each HCC patient in the TCGA database: Risk score = AC026412.3 * 2.54199 + AC026356.1 * 1.87356 + SLC6A1-AS1 * (−0.71370) + AC011462.4 * 1.19584 + MIR548XHG * 0.62675 + AL031985.3 * 0.96845 + AL117336.2 * 0.77657 + MCM3AP-AS1 * 2.69411 + AL365361.1 * (−2.99107) (note: the name of LncRNA indicates their expression level in TCGA database). The gene discussed is MCM3AP; the disease is hepatocellular carcinoma.