VEGFA and meningioma: In meningiomas several signaling pathways have been identified as deregulated including RB/p53, Wnt/β-catenin, transforming growth factor β (TGF-β), mitogen-activated protein kinase (MAPK), Phosphatidylinositol-3-kinase (PI3K)/Akt and vascular endothelial growth factor (VEGF) [9, 10].