IL6 and cancer: TEV derived from different cancer types share some similarity and induce the production of IL-6 [64,68,70,71], IL-10 [64,72,73,74], TNF-α [64,68,71], TGF-β, IL-1β, chemokine (C-C motif) ligand (CCL)2 and CCL4 [64,68,70,71] by monocytes.