IDH2 and central nervous system cancer: Among their series of grade II or III gliomas (N = 586), 40.4% (40/99) of IDH-WT astrocytoma and 10.1% (31/306) of IDH-mutant astrocytoma was TERTp-mutated tumors and remained 181 cases were triple positive (1p/19q co-deleted, IDH-mutant, and TERT-mutated) ODG [9].