Table 1.
Patient demographics
| Characteristic | Total (N = 169) |
|---|---|
| Original histologic diagnosis (WHO 2007)—no. (%) | |
| Oligodendroglioma | |
| Grade II | 62 (36.7) |
| Grade III | 55 (32.5) |
| Oligoastrocytoma | |
| Grade II | 17 (10.1) |
| Grade III | 13 (7.7) |
| Astrocytoma | |
| Grade II | 2 (1.2) |
| Grade III | 2 (1.2) |
| Age at diagnosis (yrs) | |
| Mean ± SD | 45.8 ± 12.8 |
| Range | 17–75 |
| Male sex—no. (%) | 84 (49.7) |
| White race—no./total no. (%) | 155/164 (94.5) |
| Extent of resection—no./total no. (%) | |
| Open biopsy | 1/164 (0.6) |
| Subtotal resection | 59/164 (36.0) |
| Gross total resection | 104/164 (63.4) |
| Tumor location—no./total no. (%) | |
| Frontal lobe | 122/166 (73.5) |
| Occipital lobe | 3/166 (1.8) |
| Parietal lobe | 14/166 (8.4) |
| Temporal lobe | 27/166 (16.3) |
| Laterality—no/total no. (%) | |
| Left | 79/168 (47.0) |
| Midline | 3/168 (1.8) |
| Right | 86/168 (51.2) |
Clinical characteristics of patients from The Cancer Genome Atlas database with confirmed diagnosis of oligodendroglioma (i.e., IDH-mutant, 1p19q co-deleted glioma).