Home > Publications Database > Genetic Predisposition to Hippocampal Atrophy and Risk of Amnestic Mild Cognitive Impairment and Alzheimer's Dementia. > print

001     276181
005     20250209000727.0
024 7 _ |a 10.3390/geriatrics10010014
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037 _ _ |a DZNE-2025-00249
041 _ _ |a English
082 _ _ |a 610
100 1 _ |a Liampas, Ioannis
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245 _ _ |a Genetic Predisposition to Hippocampal Atrophy and Risk of Amnestic Mild Cognitive Impairment and Alzheimer's Dementia.
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520 _ _ |a There is a paucity of evidence on the association between genetic propensity for hippocampal atrophy with cognitive outcomes. Therefore, we examined the relationship of the polygenic risk score for hippocampal atrophy (PRShp) with the incidence of amnestic mild cognitive impairment (aMCI) and Alzheimer's disease (AD) as well as the rates of cognitive decline.Participants were drawn from the population-based HELIAD cohort. Comprehensive neuropsychological assessments were performed at baseline and at follow-up. PRShp was derived from the summary statistics of a large genome-wide association study for hippocampal volume. Cox proportional hazards models as well as generalized estimating equations (GEEs) were used to evaluate the association of PRShp with the combined incidence of aMCI/AD and cognitive changes over time, respectively. All models were adjusted for age, sex, education, and apolipoprotein E (APOE) genotype.Our analysis included 618 older adults, among whom 73 developed aMCI/AD after an average follow-up of 2.96 ± 0.8 years. Each additional SD of PRShp elevated the relative hazard for incident aMCI/AD by 46%. Participants at the top quartile of PRShp had an almost three times higher risk of converting to aMCI/AD compared to the lowest quartile group. Higher PRShp scores were also linked to steeper global cognitive and memory decline. The impact of PRShp was greater among women and younger adults.Our findings support the association of PRShp with aMCI/AD incidence and with global cognitive and memory decline over time. The PRS association was sex- and age-dependent, suggesting that these factors should be considered in genetic modelling for AD.
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650 _ 7 |a Alzheimer’s disease
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650 _ 7 |a cognitive decline
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650 _ 7 |a hippocampal atrophy
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650 _ 7 |a polygenic risk score
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700 1 _ |a Siokas, Vasileios
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700 1 _ |a Mourtzi, Niki
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700 1 _ |a Charisis, Sokratis
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700 1 _ |a Sampatakakis, Stefanos N
|0 0009-0009-7316-0471
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700 1 _ |a Foukarakis, Ioannis
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700 1 _ |a Hatzimanolis, Alex
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700 1 _ |a Ramirez, Alfredo
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700 1 _ |a Lambert, Jean-Charles
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700 1 _ |a Yannakoulia, Mary
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700 1 _ |a Kosmidis, Mary H
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700 1 _ |a Dardiotis, Efthimios
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700 1 _ |a Hadjigeorgiou, Georgios M
|0 0000-0001-5386-4273
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700 1 _ |a Sakka, Paraskevi
|b 13
700 1 _ |a Rouskas, Konstantinos
|0 0000-0003-2549-6834
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700 1 _ |a Scarmeas, Nikolaos
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773 _ _ |a 10.3390/geriatrics10010014
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