In support of NOX2 elevation having an important pathological role in AD, treatment with the NADPH oxidase inhibitor, apocynin markedly reduced oxidative stress, cerebral amyloid angiopathy, and cerebral amyloid angiopathy-induced vasomotor impairment in an animal model of AD (aged APP-overexpressing Tg2576 mice) [203]. Here, FMO5 is linked to Alzheimer disease.