IDH1 and astrocytoma (excluding glioblastoma): The study group presented in Table 1 included IDH wild-type GBM patients (n =  20), IDH-mutant astrocytoma, with mutation in isocitrate dehydrogenase 1 (IDH1) at arginine 132 (R132) (n =  3), and gliosarcoma (n =  1).