In a small study exerted by Proctor and colleagues, TAM infiltration was analyzed in a cohort of 30 meningioma samples (n = 16 WHO°1, n = 12 WHO°2 and n = 2 WHO°3) using multicolor IF staining for CD68+ and CD163+ (M2-like macrophage marker). This evidence concerns the gene CD68 and meningioma.