CCL2 and Alzheimer disease: We identified SNPs in two genes, neuron navigator 3 (NAV3, also named Unc-53 Homolog 3, rs696468) (p < 7.55×10− 9) and Unc-5 Netrin Receptor C (UNC5C rs72659964) (p < 1.07×10− 8) that showed an association between increasing levels of blood MCP-1 and AD.