SLC6A1 and hepatocellular carcinoma: Compared with the recently established crLncRNA prognostic model in HCC, our model, which consists of nine crLncRNAs (AC026412.3, AC026356.1, MCM3AP-AS1, AL031985.3, AL117336.2, AL365361.1, SLC6A1-AS1, MIR548XHG, AC011462.4), has higher specificity and sensitivity (1-, 3-, and 5-year AUC of 0.828, 0.781, and 0.779, respectively) [38,39].