IDH1 and diffuse astrocytoma: Results of histopathological diagnosis according to the WHO classification 2016, 4th revised edition [14] of 27/34 (79.4%) patients is outlined in Table 1 and yielded the following results: 2 (5.9%) diffuse astrocytoma IDH-wt, 2 (5.9%) diffuse astrocytoma IDH-mut, 4 (11.8%) anaplastic astrocytoma NOS, 2 (5.9%) anaplastic astrocytoma IDH-mut, 8 (23.5%) anaplastic astrocytoma IDH-wt, 6 (17.6%) GBMs IDH-wt and 3 (8.8%) diffuse midline gliomas (H3 K27M-mut).