Higher Ki67 levels as determined by ROC curve (J index: 0.38, criterion > 7, Figures 5(a) and 5(b)) were correlated with longer DFS (P = 0.0007) and OS (P = 0.002) in GBM patients (Figures 5(c) and 5(d)). Here, MKI67 is linked to glioblastoma.