Fig. 5

Internal and external validation of risk models. A Overall survival analysis of the high-/low-risk subgroups in the training set (TCGA cohort). B Overall survival analysis of the high-/low-risk subgroups in the validation set (GEO cohort). C Principal component analysis of the training set (TCGA cohort)t. (D) Principal component analysis of the validation set (GEO cohort). E Risk distribution map of the training sett (TCGA cohort). F Risk distribution map of the validation set (GEO cohort). G ROC curves of predictive performance in the training sett (TCGA cohort). (H) ROC curves of predictive performance in the validation set (GEO cohort)