Fig. 4. Identification of critical m⁶A-related lncRNAs for the novel risk score model and prognostic evaluation in HCC.

(A–B) Screening of the critical m⁶A-related lncRNAs by LASSO Cox regression. (C–D) Survival analyses of high- and low-risk groups in the training and validation cohorts. (E–F) Time-dependent ROC curves based on the risk score for 1-, 3-, and 5-year OS of HCC in the training and validation groups. AUC, area under the curve; HCC, hepatocellular carcinoma; LASSO, least absolute shrinkage and selection operator; lncRNAs, long noncoding RNAs; m⁶A, N6-methyladenosine; OS, overall survival; ROC, receiver operating characteristic; TCGA, The Cancer Genome Atlas.