PSEN1 and early-onset autosomal dominant Alzheimer disease: In this study, effects of long-term liraglutide treatment were therefore determined in two double APP/PS1 transgenic mouse models of Alzheimer’s disease carrying different clinical APP/PS1 mutations, i. e. the ‘London’ (hAPPLon/PS1A246E) and ‘Swedish’ mutation variant (hAPPSwe/PS1ΔE9) of APP, with co-expression of distinct PS1 variants.