IL10 and mixed glioma: However, when we performed the subgroup analyses based on regions and tumor types of the IL‐10 level (Table 3), we found that the circulating levels of IL‐10 in Asian patients (pooled SMD 0.48 [95% CI: 0.24‐0.73; P = .000]) and mixed gliomas (pooled SMD 0.50 [95% CI: 0.19‐0.81; P = .001]) were significantly higher than in healthy controls.