Sensitivity analyses restricted to IDH wildtype tumors confirmed these findings for both MGMT methylated glioblastoma (aOR for PFS: 1.78 (1.06–3.00), p = 0.029; aOR for OS: 2.43 (1.39–4.24), p = 0.002) and MGMT unmethylated glioblastoma (aOR for PFS: 0.91 (0.58–1.41), p = 0.66; aOR for OS: 1.46 (0.91–2.35), p = 0.11) [13]. Here, MGMT is linked to glioblastoma.