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Cross-ancestry performance of Parkinson's disease polygenic risk scores in admixed Latin American populations

2026-03-03 genetic and genomic medicine Title + abstract only
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Parkinsons disease (PD) is a disabling neurodegenerative disorder with a substantial heritable component. Despite major advances in genome-wide association studies (GWAS), polygenic risk scores (PRS) show reduced predictive performance outside European populations, limiting equitable translation. Latin American populations represent a particularly difficult case because of their characteristic three-way admixture. We evaluated the cross-ancestry transferability of PD PRS in 1,872 PD cases and 1,...

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