PreprintCited by 35Genetic Associations and EpidemiologyForensic and Genetic ResearchGenetic Mapping and Diversity in Plants and Animals

Multi-Ancestry Meta-Analysis yields novel genetic discoveries and ancestry-specific associations

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Turley, Patrick, Martin, Alicia R., Goldman, Grant, Li, Hui, Kanai, Masahiro, Walters, Raymond K., Jala, Jonathan B., Lin, Kuang +18 more·2021·bioRxiv (Cold Spring Harbor Laboratory)

Abstract

We present a new method, Multi-Ancestry Meta-Analysis (MAMA), which combines genome-wide association study (GWAS) summary statistics from multiple populations to produce new summary statistics for each population, identifying novel loci that would not have been discovered in either set of GWAS summary statistics alone. In simulations, MAMA increases power with less bias and generally lower type-1 error rate than other multi-ancestry meta-analysis approaches. We apply MAMA to 23 phenotypes in East-Asian- and European-ancestry populations and find substantial gains in power. In an independent sample, novel genetic discoveries from MAMA replicate strongly.

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  • MAMA identified 94 independent genome-wide significant SNPs with EAS-specific meta-analysis, 2 of which were previously unreported for EduYears (rs2881903 and rs16930687).

    “Using MAMA, we identified 94 independent genome-wide significant SNPs with EAS-specific meta-analysis (Fig. 1c and Supplementary Table 13), 2 of which were previously unreported for EduYears (rs2881903 and rs16930687)”

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Authors
Turley, P., Martin, A. R., Goldman, G., Li, H., Kanai, M., Walters, R. K., Jala, J. B., Lin, K., Millwood, I. Y., Carey, C. E., Palmer, D. S., Zacher, M., Atkinson, E. G., Chen, Z., Li, L., Akiyama, M., Okada, Y., Kamatani, Y., Walters, R. G., Callier, S., Laibson, D., Meyer, M. N., Cesarini, D., Daly, M., Benjamin, D. J., & Neale, B. M.
Affiliations
  • University of Southern California (US)
  • Broad Institute (US)
  • National Bureau of Economic Research (US)
  • Harvard University (US)
  • University of California, Los Angeles (US)
  • University of Oxford (GB)
  • Brown University (US)
  • Peking University (CN)
  • Kyushu University (JP)
  • The University of Osaka (JP)
  • RIKEN Center for Integrative Medical Sciences (JP)
  • Geisinger Medical Center (US)
Corresponding author
Turley, Patrick
Venue
bioRxiv (Cold Spring Harbor Laboratory)
Publisher
openRxiv
Published
2021-04-24
OpenAlex
W3158903754
Cited by
35
References
41
Citations by year
2026: 6 · 2025: 3 · 2024: 5 · 2023: 11 · 2022: 8 · 2021: 2
Type
posted content
Language
en
Open access
Locations
bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by)
Funders
Medical Research Council (MC_PC_14135, MC_UU_00017/1)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Forensic and Genetic Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Mapping and Diversity in Plants and Animals
Keywords
genome-wide association study, statistical power, type I error, East Asian ancestry, European ancestry, novel genetic loci, genetic discovery

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