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IDH1R132H IHC (544 cases) and sequencing analysis of IDH1/2 mutation results (482 cases)
| WHO Grade | IDH1(R132H) IHC n/N (%) | Sequencing analysis | |
|---|---|---|---|
| IDH1 mutation n/N (%) | IDH2 mutation n/N (%) | ||
| II | 116/171(67.8) | 108/158(68.4) | 1/158(0.6) |
| III | 73/152(48.0) | 70/140(50.0) | 0/140(0.0) |
| IV | 36/199(18.1) | 36/184(19.6) | 0/184(0.0) |
