Chemotherapy-induced cognitive impairment Chemotherapy accelerates neurodegeneration, resulting in cognitive impairment Dysregulation of adult neurogenesis is a common cellular mechanism driving chemobrain Cisplatin impairs mitotic function of neural progenitors in the adult dentate gyrus NMN prevents cisplatin-induced impairments in learning ability and memory function Targeting Nampt-mediated NAD+ metabolic pathway in chemobrain