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. 2024 Sep 3;33(18):1584-1591.
doi: 10.1093/hmg/ddae097.

Multi-ancestry polygenic risk scores for venous thromboembolism

Collaborators, Affiliations

Multi-ancestry polygenic risk scores for venous thromboembolism

Yon Ho Jee et al. Hum Mol Genet. .

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 genome-wide association studies meta-analyses of European- (71 771 cases and 1 059 740 controls) and African-ancestry samples (7482 cases and 129 975 controls). We used LDpred2 and PRS-CSx to construct ancestry-specific and multi-ancestry PRSs and evaluated their performance in an independent European- (6781 cases and 103 016 controls) and African-ancestry sample (1385 cases and 12 569 controls). Multi-ancestry PRSs with weights tuned in European-ancestry samples slightly outperformed ancestry-specific PRSs in European-ancestry test samples (e.g. the area under the receiver operating curve [AUC] was 0.609 for PRS-CSx_combinedEUR and 0.608 for PRS-CSxEUR [P = 0.00029]). Multi-ancestry PRSs with weights tuned in African-ancestry samples also outperformed ancestry-specific PRSs in African-ancestry test samples (PRS-CSxAFR: AUC = 0.58, PRS-CSx_combined AFR: AUC = 0.59), although this difference was not statistically significant (P = 0.34). 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 might be used to improve performance across diverse populations to identify individuals at highest risk for VTE.

Keywords: genetic; polygenic risk score; risk prediction; venous thromboembolism; venous thrombosis.

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Figures

Figure 1
Figure 1
Overview of development and validation of population-specific and multi-ancestry PRS for venous thromboembolism.
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.

Update of

  • 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. medRxiv [Preprint]. 2024 Jan 10:2024.01.09.24300914. doi: 10.1101/2024.01.09.24300914. medRxiv. 2024. Update in: Hum Mol Genet. 2024 Sep 3;33(18):1584-1591. doi: 10.1093/hmg/ddae097. PMID: 38260294 Free PMC article. Updated. Preprint.

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