Various cytokines in the cerebrospinal fluid, such as TNF‐α, TGF‐β, IFN, IL‐2, IL‐4, IL‐6, IL‐8, IL‐10, IL‐12, and IL‐13, play roles in shaping the GBM microenvironment [53]. Here, CXCL8 is linked to glioblastoma.