**Figure 5.** **Construction of the nomogram model.** (**A**) Univariate and multivariate Cox analyses indicating that the IPS is significantly associated with OS. (**B**) Nomogram model for predicting the probability of 1-, 2-, and 3-year OS in GBMs. (**C**) Calibration plots of the nomogram for predicting the probability of OS at 1, 2, and 3 years.