IL17A and central nervous system cancer: IL‐8 is a potent angiogenic factor for the progression of malignant gliomas and is correlated with the histopathological grade of gliomas.56 Studies have indicated that GBM cells, which secrete IL‐8, promote angiogenesis and microvascular endothelial permeability.57 Over the past few years, the possible role of IL‐17 in tumors has received increasing attention.