IDH1 and glioblastoma: In line with the current literature, patients’ age at diagnosis showed a statistically significant difference (p < .05) with the IDH1 mutant group having a younger mean age than the IDH1 wild one.23 Concerning pathology, the majority of glioblastomas were IDH1 wild type, while the majority of anaplastic astrocytomas were IDH1 mutant, as expected.