Figure 7. Internal validation of OS prediction signatures based on internal datasets. Kaplan-Meier survival curves for the test and training groups. (A, B) Training and test groups’ survival duration and status. (C) Training and test groups’ distribution of total survival risk scores. (D) ROC curves and AUCs for patients in the training and test groups’ 1-, 3-, and 5-year survival rates. Abbreviations: ROC: receiver operating characteristic; AUC: area under the curve; OS: overall survival; TCGA: Cancer Genome Atlas.