Apart from that, CCL7 and its receptors—CCR1 (C-C chemokine receptor type 1), CCR2, and CCR3 (C-C chemokine receptor type 3)—were found to be overexpressed in liver metastatic tumor tissues of the patients and had much higher expression levels in hepatic recurrences when compared with primary tumors [12]. Here, CCR1 is linked to metastatic neoplasm.