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Clinicopathological features of LGG patients in this study.
| Characteristics | Training cohort | Validation cohort | |
|---|---|---|---|
| TCGA (n = 423) | CGGA (n = 590) | ||
| Age (years) | <45 | 245 | 398 |
| ≥45 | 178 | 192 | |
| Gender | Female | 189 | 250 |
| Male | 234 | 340 | |
| WHO grade | II | 201 | 269 |
| III | 222 | 321 | |
| IDH status | Mutant | 344 | 413 |
| Wild type | 77 | 138 | |
| NA | 2 | 39 | |
| 1p19q codeletion | Codel | 141 | 180 |
| Noncodel | 282 | 370 | |
| NA | 0 | 40 | |
| MGMT promoter status | Methylated | 351 | 284 |
| Unmethylated | 72 | 199 | |
| NA | 0 | 107 | |
