AD/AIT patients showed also decreased IL-23A and IL-15 mRNA levels (by a trend) upon vitamin D addition in IL1β-stimulated monocytes [AD/AIT: IL23AIL1β vs IL1β/1,25(OH)2D3 p = 6x10-5, IL-15IL1β vs IL1β/1,25(OH)2D3 p = 0.06] (Figures 3E, G). This evidence concerns the gene IL15 and Alzheimer disease.