IL17A and Alzheimer disease: Indeed, numerous studies confirmed that inflammatory cytokines and chemokines, including interleukin (IL)-6, granulocyte colony-stimulating factor, granulocyte macrophage colony-stimulating factor, IL-17, chemokine (C–X–C motif) ligand 1, and C–C motif chemokine ligand 2, play essential roles in AD pathogenesis (10–12).