This is a preprint.
Multi-ancestry polygenic risk scores for venous thromboembolism
- PMID: 38260294
- PMCID: PMC10802635
- DOI: 10.1101/2024.01.09.24300914
Multi-ancestry polygenic risk scores for venous thromboembolism
Update in
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Multi-ancestry polygenic risk scores for venous thromboembolism.Hum Mol Genet. 2024 Sep 3;33(18):1584-1591. doi: 10.1093/hmg/ddae097. Hum Mol Genet. 2024. PMID: 38879759 Free PMC article.
Abstract
Venous thromboembolism (VTE) is a significant contributor to morbidity and mortality, with large disparities in incidence rates between Black and White Americans. Polygenic risk scores (PRSs) limited to variants discovered in genome-wide association studies in European-ancestry samples can identify European-ancestry individuals at high risk of VTE. However, there is limited evidence on whether high-dimensional PRS constructed using more sophisticated methods and more diverse training data can enhance the predictive ability and their utility across diverse populations. We developed PRSs for VTE using summary statistics from the International Network against Venous Thrombosis (INVENT) consortium GWAS meta-analyses of European- (71,771 cases and 1,059,740 controls) and African-ancestry samples (7,482 cases and 129,975 controls). We used LDpred2 and PRSCSx to construct ancestry-specific and multi-ancestry PRSs and evaluated their performance in an independent European- (6,261 cases and 88,238 controls) and African-ancestry sample (1,385 cases and 12,569 controls). Multi-ancestry PRSs with weights tuned in European- and African-ancestry samples, respectively, outperformed ancestry-specific PRSs in European- (PRSCSXEUR: AUC=0.61 (0.60, 0.61), PRSCSX_combinedEUR: AUC=0.61 (0.60, 0.62)) and African-ancestry test samples (PRSCSXAFR: AUC=0.58 (0.57, 0.6), PRSCSX_combined AFR: AUC=0.59 (0.57, 0.60)). The highest fifth percentile of the best-performing PRS was associated with 1.9-fold and 1.68-fold increased risk for VTE among European- and African-ancestry subjects, respectively, relative to those in the middle stratum. These findings suggest that the multi-ancestry PRS may be used to identify individuals at highest risk for VTE and provide guidance for the most effective treatment strategy across diverse populations.
Conflict of interest statement
Conflict of Interest Statement B.M.P. serves on the Steering Committee of the Yale Open Data Access Project funded by Johnson & JOhnson. S.M.D. receives research support from RenalytixAI and Novo Nordisk, outside the scope of the current research. SMD is named as a co-inventor on a Government-owned US Patent application related to the use of genetic risk prediction for venous thromboembolic disease filed by the US Department of Veterans Affairs in accordance with Federal regulatory requirements.
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