Fig. 5

Internal and external validation of the peroxisome-related gene risk model. A-C PCA plots for KIRCs based on the risk score of the testing, entire and GSE22541 cohorts. D-F Kaplan–Meier curves for the OS of patients in the high-risk and low-risk groups of testing, entire and GSE22541 cohorts. G-I ROC indicated the predictive efficiency of the risk score of the testing, entire and GSE2254 cohorts. J-L Distribution of patients based on the risk score of the testing, entire and GSE2254 cohorts (up). The OS for each patient of the testing, entire and GSE22541cohorts. (low-risk population: on the left side of the dotted line; high-risk population: on the right side of the dotted line) (mid). Heat map of risk model based on risk score of the training cohort. (down)