Figure 4. Prognostic nomogram to predict the 0.5-, 1-, and 3-year OS probabilities of GBM patients. (A) Nomogram model to predict the survival of GBM patients based on the TCGA training cohort. The prognostic performance of the prognostic nomogram demonstrated by the ROC curve for predicting the 0.5-, 1-, and 3-year OS rates in the TCGA training cohort (B) and CGGA validation cohort (C). Calibration curves of the prognostic nomogram for predicting OS at 0.5, 1, and 3 years in the TCGA (D–F) and CGGA (G–I) cohorts. The actual survival is plotted on the y-axis, and the nomogram-predicted probability is plotted on the x-axis.