Data in GEPIA revealed that the expressions of CCL5, CCL15, CCL20, CSF2RA, CXCL1, CXCL8, CXCL16, CXCR4, GDF15, IL1RN, IL2RB, IL2RG, IL22RA1, INHBA, TNFRSF1B, and TNFRSF14 were significantly higher in GC tissues than in normal tissues (Supplementary Figure S7). Here, CCL15 is linked to gastric cancer.