Characteristics of Processed Study Cohort
| Characteristic | Data |
| Total patients | 70 (100%) |
| Median age ± SD (y) | 48 ± 15 |
| Sex | |
| Male | 42 (60%) |
| Female | 28 (40%) |
| Histologic type | |
| Diffuse astrocytoma | 17 (24%) |
| Oligodendroglioma | 22 (31%) |
| Oligoastrocytoma | 13 (19%) |
| Glioblastoma multiforme | 17 (24%) |
| Pilocytic astrocytoma | 1 (<2%) |
| WHO 2007 grade | |
| I | 1 (<2%) |
| II | 21 (30%) |
| III | 31 (44%) |
| IV | 17 (24%) |
| IDH1 R132H mutation | |
| Positive | 35 (50%) |
| Negative | 35 (50%) |
Data are n followed by percentage in parentheses, except for age.