MGMT and anaplastic oligodendroglioma: The results demonstrated that LGG patients with the clinicopathological features of age ≥45 years, more malignant histological type (anaplastic oligodendroglioma/oligoastrocytoma), higher WHO grade, IDH wide type, 1p19q noncodel, and MGMT promoter unmethylated showed significantly higher levels of risk score, while no risk score differences were observed between patients satisfied by gender (Figure 5(a)).