CCR2 and Alzheimer disease: Notably, the P-value for CCR2 on monocyte was 0.003 with an OR of 1.043 (1.015–1.071), and the P-value for HLA-DR on CD14− CD16− was 0.004 with an OR of 1.027 (1.009–1.046), suggesting a potential increased risk for AD.