As shown in Figure 9A, eight cytokines (IL-1β, IL-6, IL-10, TGF-β, CCL2, CXCL8, CSF-1, and VEGF) were identified to have higher expression values in the high-risk group than in the low-risk group, which was relevant to the progression, invasion, and metastasis of cancers. This evidence concerns the gene CXCL8 and cancer.