IL6 and neoplasm: Through transcriptome analysis of 107 meningiomas, Zador and colleagues showed that gamma-delta T cells, monocytes, and plasma cells, with their potentially tumor-suppressant activity, are dominant in SBMs [17]; conversely, mast cells and neutrophils, with their proinflammatory and oncogenic role (related to IL-6 and IL1R2 expression), are overexpressed in convexity meningiomas.