Fig. 4

Risk score derived from 3-gene signature is a prognostic biomarker for recurrence free survival (RFS). a–c KM survival, risk score and time-dependent ROC curves of RFS in GSE116918 validation cohort. d–f KM survival, risk score and time-dependent ROC curves of RFS in GSE46602 validation cohort. g–i KM survival, risk score and time-dependent ROC curves of RFS in GSE54460 validation cohort. j–l KM survival, risk score and time-dependent ROC curves of RFS in GSE70768 validation cohort. m–o KM survival, risk score and time-dependent ROC curves of RFS in GSE70769 validation cohort. The high-risk and low-risk groups were stratified at optimal cut-off due to the risk score. The AUC was assessed at 1, 3 and 5 years