CCL7 and thyroid gland carcinoma: CCL2 is overexpressed in liver, breast, gastric, and thyroid cancer 11; CCL5 is overexpressed in gastric, pancreatic, breast, colorectal, prostate, liver, and thyroid cancer 12; CCL7 is markedly upregulated in lung, gastric, colorectal, and uroepithelial cancer 13.