Studies have reported that several chemokines, such as CCL2, CCL5, CCL4, CXCL19, and CXCL12, are associated with the progression, metastasis, and prognosis of lung cancer (Wagner et al., 2009; Itakura et al., 2013; Cheng et al., 2016b). This evidence concerns the gene CCL4 and lung cancer.