Fig. 6. Evaluation of the independent prognostic significance of the novel risk score model based on m⁶A-related lncRNAs in HCC.

(A–B) Univariate and multivariate Cox analyses with risk score and other clinical factors for OS of HCC in the training group. (C–D) Univariate and multivariate Cox analyses with risk score and other clinical factors for OS of HCC in the validation group. (E–L) Survival analyses of the risk score in different subgroups of various clinical factors: age (≤/>60 years), sex (female/male), pathological grade (1–2/3–4), and clinical stage (I–II/III–IV). HCC, hepatocellular carcinoma; HR, hazard ratio; lncRNAs, long noncoding RNAs; m⁶A, N6-methyladenosine;