Fig. 3

Establishment and validation of an HIF-1α score system based on the HIF-1α cluster. A–C KM survival curves for the OS of HCC patients in different HIF-1α score groups in the TCGA (A), GSE14520 (B), and ICGC (C) cohorts. D–F ROC curve analysis of the HIF-1α score system for 1-, 3-, and 4-year OS prediction in the TCGA (D), GSE14520 cohort (E), and ICGC (F) cohorts. G–I PCA to confirm the cluster efficacy of the HIF-1α score system in the TCGA (G), GSE14520 (H), and ICGC (I) cohorts