Fig. 4

Upper panel: TCGA (a) and GSE44001 (b) samples are based on the KM curve of the PS prediction model and the prognosis; the green and red curves represent low- and high-risk samples, respectively. Lower panel: ROC curve of the prediction results based on the PS prognostic model. The numbers in brackets represent the specificity and sensitivity corresponding to the ROC curve. TCGA, The Cancer Genome Atlas; KM, Kaplan–Meier; PS, prognostic score; ROC, receiver operating characteristic