Fig. 4

Prognostic analysis of six-gene signature. The dotted line represented the median risk score and divided the patients into low- and high-risk group. A: The curve of risk score. B: Survival status of the patients. More dead patients corresponding to the higher risk score. C: Heatmap of the expression profiles of the six prognostic genes in low- and high-risk group. D: Kaplan–Meier survival analysis of the six-gene signature. E: Time-dependent ROC analysis of the six-gene signature. ROC: receiver operating characteristic