OSM and meningioma: Interleukin 3 (IL‐3), IL‐6, granulocyte colony‐stimulating factor (G‐CSF), granulocyte monocyte colony‐stimulating factor (GM‐CSF), interferon gamma (IFN‐γ), oncostatin M (OSM), leukemia inhibitor factor (LIF), tumor necrosis factor alpha (TNF‐α), TNF‐β, IL‐1α, IL‐1β, transforming growth factor (TGF) family, IL‐8, chemokine ligand 2/monocyte chemoattractant protein 1 (CCL2/MCP‐1), chemokine (C‐X‐C motif) ligand 1/2/3 (CXCL1/2/3), CXCL9, and CXCL10 have all been found expressed in meningioma.36