It was demonstrated that serum levels CCL2 and CCL5 were significantly higher in patients suffering from glial tumors than in healthy volunteers, with even five-fold relative increase in CCL5 concentration with regard to controls, what reconfirms the involvement of CCL2 [231,233] and CCL5 [242,243] in the pathogenesis of glial tumors. This evidence concerns the gene CCL5 and glioma.