Moreover, elevated mRNA expression of Ccl2, alias Mcp-1, a chemokine involved in the recruitment of peripheral cells, and Cd45 mRNA, usually enriched in peripheral macrophage populations, was found in the dACC of individuals with MDD who died by suicide compared to age- and PMI-matched healthy controls (Torres-Platas et al., 2014b). Here, CCL2 is linked to major depressive disorder.