ArticleFrontiers in aging neuroscience2026
Alzheimer's disease polygenic risk score associates with hippocampal subfield atrophy and immune-related genetic mechanism.
Article in Frontiers in aging neuroscience, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Hippocampal atrophy is frequently observed in neurodegenerative diseases such as Alzheimer's disease (AD) or hippocampal sclerosis of aging (HS-aging). Volume loss in the hippocampus is described as prodromal stage of dementia and has been associated with AD polygenic risk score (PRS). CA1 and subiculum atrophy have been suggested to be a promising Materials and methods: We used regression models to assess the relation of the AD-PRS, and genome-wide significant AD variants, with CA1 and subiculum volumes assessed by magnetic resonance imaging (MRI) in 1,859 participants without dementia (with mild cognitive impairment or cognitively healthy). Co-regulatory network analyses and over-representation enrichment analyses were conducted to identify biological pathways enriched with co-regulatory networks of genes associated with hippocampal subregion volumes. We meta-analyzed data from seven cohorts to associate their AD-PRS with AD in the presence of concomitant brain pathologies. Results: Reduced volumes of CA1 and subiculum show association with higher levels of AD-PRS and with variant rs5848 in Discussion: Specific AD-SNPs enriched in immune-brain axis pathways rather than A
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