IL17A and Alzheimer disease: Researchers noted significant differences in IL-17A concentrations between patients with ADPS (16.1 ± 5.4 pg/mL), AD (5.8 ± 2.1 pg/mL), or PS (5.0 ± 3.1 pg/mL) and the control group (3.3 ± 1.8 pg/mL), thus showing the important role of T17 cells in the pathogenesis of ADPS [150].