Global Biobank analyses provide lessons for developing polygenic risk scores across diverse cohorts

Linkage Disequilibrium Genome-wide Association Study Genetic Association
DOI: 10.1016/j.xgen.2022.100241 Publication Date: 2023-01-05T04:33:33Z
AUTHORS (149)
ABSTRACT
Polygenic risk scores (PRSs) have been widely explored in precision medicine. However, few studies thoroughly investigated their best practices global populations across different diseases. We here utilized data from Global Biobank Meta-analysis Initiative (GBMI) to explore methodological considerations and PRS performance 9 biobanks for 14 disease endpoints. Specifically, we constructed PRSs using pruning thresholding (P + T) PRS-continuous shrinkage (CS). For both methods, a European-based linkage disequilibrium (LD) reference panel resulted comparable or higher prediction accuracy compared with several other non-European-based panels. PRS-CS overall outperformed the classic P T method, especially endpoints SNP-based heritability. Notably, is heterogeneous endpoints, biobanks, ancestries, asthma, which has known variation prevalence populations. Overall, provide lessons construction, evaluation, interpretation GBMI resources highlight importance of biobank-scale genomics era.
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