We examined the percentages of innate immune cells monocytes (CD56−CD66b−CD3−CD19− cells), NK cells (CD3−CD19− cells), and neutrophils (CD66b+ cells) and adaptive immune cells (CD4+ T-cells, CD8+ T-cells, and CD19+ B-cells) in the MCI-LB subjects and HCs to determine whether immune changes are observed in early stages of DLB. The gene discussed is CD4; the disease is Lewy body dementia.