PSEN1 and early-onset autosomal dominant Alzheimer disease: In this study, we explored the therapeutic potential of PF-04691502, a dual PI3K/mTOR inhibitor, in Alzheimer’s disease (AD)-like pathology using male and female B6.Cg-Tg(APPswe, PSEN1dE9)85Dbo/Mmjax mice (APP/PS1), a well-established transgenic model of AD.