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Summary of studies on PD-L1 IHC expression across three WHO grades of meningioma
| Study (references) | Cohort (n) | PD-L1 Ab | PD-L1 (%) | Association with radiotherapy | Prognostic significance | ||
|---|---|---|---|---|---|---|---|
| G I | G II | G III | |||||
| Du et al. [16] | 173 | Sinobiological | 40 | 60 | 78–89 | No | Not prognostic for RFS |
| Hans et al. [34] | 96 | Cell signaling | 1 | 3 | 9 | Yes, positive | Independent prognostic for OS |
| Karimi et al. [46] | 93 | Spring bioscience | 27 | 47 | 67 | No | Independent prognostic for RFS |
RFS recurrence free survival, OS overall survival
