ArticleNeurology. Genetics2026
Genetic Insights Into Protective Effects of GLP-1 Receptor Agonists on Stroke and Alzheimer Disease Across Ancestries.
Article in Neurology. Genetics, 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
23 authors.
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Abstract
Background and Objectives: Stroke and dementia are leading causes of death and disability worldwide, requiring enhanced preventive strategies. Glucagon-like peptide-1 receptor agonists (GLP-1RA), widely used for type 2 diabetes (T2D) and obesity, have demonstrated pleiotropic effects, including cardiovascular benefits, with mounting evidence also suggesting potential beneficial effects on brain health. The objective of this study was to investigate the genetically proxied effect of GLP-1RA on stroke, Alzheimer disease (AD), and related endophenotypes, in a cross-ancestry setting. Methods: We conducted a 2-sample Mendelian randomization (MR) study using both a locus-based and a protein quantitative trait loci (pQTL)-based approach. The study leveraged summary statistics from large-scale genome-wide association studies (GWAS). These GWAS comprised participants of European, East-Asian, and African ancestry with and without T2D, stroke, and AD, and with measurements of fasting glucose, glycated hemoglobin, stroke, and AD endophenotypes. Sample size ranged from 3,026 to 1,812,017 individuals. Genetically proxied GLP-1RA exposure was instrumented using independent T2D-associated variants ( Results: In Europeans, locus-based MR indicated significant protective associations of GLP-1RA with any stroke and ischemic stroke ( Discussion: GLP-1RAs may confer protective effects against stroke (especially ischemic and cardioembolic) and AD risk, across ancestries. These findings warrant further investigation in experimental models and clinical trials to confirm benefits on brain health and understand underlying mechanisms.
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Registered trials
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