CCL7 and cancer: CCL2 might also be relevant in line with CXCL12 and late expressed factors such as CCL7, being described as enhancing cancer cell migration, CXCL6, being associated with promoting migration and proliferation of cancer cells, and CCL13 in terms of neovascularization and cancer (Mukaida et al. 2014; Hao et al. 2020; Jung et al. 2010; Coppé et al. 2010; Korbecki et al. 2020; Liu et al. 2019).