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[Preprint]. 2024 Jan 10:2024.01.09.24300914.
doi: 10.1101/2024.01.09.24300914.

Multi-ancestry polygenic risk scores for venous thromboembolism

Affiliations

Multi-ancestry polygenic risk scores for venous thromboembolism

Yon Ho Jee et al. medRxiv. .

Update in

  • Multi-ancestry polygenic risk scores for venous thromboembolism.
    Jee YH, Thibord F, Dominguez A, Sept C, Boulier K, Venkateswaran V, Ding Y, Cherlin T, Verma SS, Faro VL, Bartz TM, Boland A, Brody JA, Deleuze JF, Emmerich J, Germain M, Johnson AD, Kooperberg C, Morange PE, Pankratz N, Psaty BM, Reiner AP, Smadja DM, Sitlani CM, Suchon P, Tang W, Trégouët DA, Zöllner S, Pasaniuc B, Damrauer SM, Sanna S, Snieder H; Lifelines Cohort Study; Kabrhel C, Smith NL, Kraft P; INVENT Consortium. Jee YH, et al. 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.

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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.

Figures

Figure 1.
Figure 1.
Overview of development and validation of population-specific and multi-ancestry PRS for venous thromboembolism. PRS development consisted of two steps: training ancestry-specific PRS and tuning multi-ancestry PRS. We trained ancestry-specific PRSs using European- and African ancestry GWAS summary statistics from the INVENT consortium and two Bayesian methods (LDPRED2 and PRSCSx). We then tuned the constructed multi-ancestry PRSs by regressing VTE case-control status on a linear combination of the two ancestry-specific PRSs in two separate tuning samples: one European-ancestry tuning sample and one African-ancestry tuning sample. NHS, Nurses’ Health Study; HPFS, Health Professional Follow-up Study; MGI, Michigan Genomics Initiative; UCLA, UCLA Precision Health Biobank; PMBB, Penn Medicine Biobank.
Figure 2.
Figure 2.
AUC and OR for population-specific and multiancestry PRS across populations.
Figure 3.
Figure 3.
Distribution of relative risk of VTE by PRS across populations.

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