Thus, we detected a series of tumor metastasis-related chemokines by RT-qPCR, which included CXCL1, CCL2, CCL5, CXCL8, CXCL9, CXCL10, CXCL12, CXCL15, CCL19, CCL20, CX3CL1, CCL17 and CCL22 [3, 4, 29–31]. Here, CCL22 is linked to neoplasm.