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Clinical characteristics of patients with IDH mutant grade II and grade III gliomas who experienced first episode of progression
| Number of patients | 147 |
| Median age at diagnosis (range) | 36.7 (18–64) |
| Male:female ratio | 1.2:1 |
| Histologic grade (%) | |
| WHO grade II | 81 (55.1) |
| WHO grade III | 66 (44.9) |
| Molecular diagnosis (%) | |
| Astrocytic | 95 (64.6) |
| Oligodendroglial | 52 (35.4) |
| Median follow-up | |
| Non-progressors | 4.1 y |
| Survivors | 4.0 y |
