Table 1.
TERT promoter status in WHO grade I-III meningioma and recurrence status*
| WHO Grade | All (mut/n) | Recurred (mut/n) | Higher grade at recurrence (mut/n) |
|---|---|---|---|
| I | 2/119 | 2/32 | 2/4 |
| II | 5/88 | 5/39 | 2/11 |
| III | 9/45 | 8/26 | NA |
| All grades | 16/252 | 15/97 | 4/15 |
* Occurrence of TERT promoter mutations among meningioma of WHO grades I, II, and III (“all”), stratification for TERT promoter mutations among cases that resulted in recurrence (“recurred”) and cases that recurred with histologically higher grade (“higher grade at recurrence”). mut = mutant; WHO = World Health Organization.