CCL2 and metastatic melanoma: Cellular processes, such as invasion and growth of metastatic melanoma along with anti‐apoptosis, angiogenesis, and cell migration are promoted by the CCR2/CCL2‐mediated activation of phosphatidylinositol 3‐kinase (PI3K)/AKT, mitogen‐activated protein kinase (MAPK)/p38 and Janus kinase (JAK)/STAT3 signalling pathways (Figure 2).47