MGMT and anaplastic astrocytoma: MGMT promoter was methylated in 36 patients (4 anaplastic oligodendroglioma, 5 anaplastic astrocytoma, and 27 glioblastoma), whereas in 1 glioblastoma, 2 anaplastic astrocytomas and 1 anaplastic oligodendroglioma we couldn’t determine the methylation status.