Cited by 1,038Genetic Associations and EpidemiologyRace, Genetics, and SocietyForensic and Genetic Research

Analysis of polygenic risk score usage and performance in diverse human populations

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Duncan, L., Shen, H., Gelaye, B., Meijsen, J., Ressler, K., Feldman, M., Peterson, R., Domingue, B.·2019·Nature Communications

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Abstract

A historical tendency to use European ancestry samples hinders medical genetics research, including the use of polygenic scores, which are individual-level metrics of genetic risk. We analyze the first decade of polygenic scoring studies (2008–2017, inclusive), and find that 67% of studies included exclusively European ancestry participants and another 19% included only East Asian ancestry participants. Only 3.8% of studies were among cohorts of African, Hispanic, or Indigenous peoples. We find that predictive performance of European ancestry-derived polygenic scores is lower in non-European ancestry samples (e.g. African ancestry samples: t = −5.97, df = 24, p = 3.7 × 10 −6 ), and we demonstrate the effects of methodological choices in polygenic score distributions for worldwide populations. These findings highlight the need for improved treatment of linkage disequilibrium and variant frequencies when applying polygenic scoring to cohorts of non-European ancestry, and bolster the rationale for large-scale GWAS in diverse human populations.

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  • PGIs constructed from GWAS in European genetic ancestries generally have much lower predictive power in samples with other genetic ancestries; on average across phenotypes, relative accuracy in African-ancestry to European-ancestry samples has been 22% and 36%.

    “PGIs like ours that are constructed from GWAS in samples of European genetic ancestries are generally found to have much lower predictive power in samples with other genetic ancestries; for example, on average across phenotypes, estimates of relative accuracy (ratio of R2) in African-genetic-ancestry to European-genetic-ancestry samples have been 22%23 and 36%24.”

    From Polygenic prediction of educational attainment within and between families from genome-wide association analyses in 3 million individuals (2022) · cites this paper as [24]

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  • Each original variable used in the models was put in linear regressions with the 20 first principal components of the SNP genotype data to correct for population stratification, as well as with age and site to correct for differences.

    “Then, each original variable used in the models was put in linear regressions with the 20 first principal components of the SNP genotype data to correct for population stratification (associations of environmental effects with genetic structure due to geographic separation, population mixtures, and migrations that occurred throughout our evolutionary history)91,92, as well as with the age of the”

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Authors
Duncan, L., Shen, H., Gelaye, B., Meijsen, J., Ressler, K., Feldman, M., Peterson, R., & Domingue, B.
Affiliations
  • Stanford University (US)
  • Harvard University (US)
  • Virginia Commonwealth University (US)
Corresponding author
Duncan, L.
Venue
Nature Communications
Published
2019-07-25
Volume
10
Issue
1
Pages
3328-3328
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2963160524
Cited by
1,038
References
53
Citations by year
2026: 100 · 2025: 126 · 2024: 140 · 2023: 157 · 2022: 186 · 2021: 207 · 2020: 100 · 2019: 19 · 2018: 2
FWCI
77.29
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • SUNY Digital Repository Support (State University of New York System) (submittedVersion, cc-by-nc-nd)
Funders
none.
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Race, Genetics, and Society
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Forensic and Genetic Research
Keywords
polygenic risk score, ancestry bias, genetic ancestry, non-European ancestry populations, predictive performance, linkage disequilibrium, variant frequency, genome-wide association study, underrepresented groups
MeSH terms
Human Genetics, Female, Hispanic or Latino, Humans, Male, Linkage Disequilibrium, Multifactorial Inheritance, White People, Asian People, Genome-Wide Association Study

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