Cited by 387Genetic Associations and EpidemiologyGenetic and phenotypic traits in livestockGenetic Mapping and Diversity in Plants and Animals

Contrasting the Genetic Architecture of 30 Complex Traits from Summary Association Data

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Shi, Huwenbo, Kichaev, Gleb, Pasaniuc, Bogdan·2016·The American Journal of Human Genetics

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Abstract

Variance-component methods that estimate the aggregate contribution of large sets of variants to the heritability of complex traits have yielded important insights into the genetic architecture of common diseases. Here, we introduce methods that estimate the total trait variance explained by the typed variants at a single locus in the genome (local SNP heritability) from genome-wide association study (GWAS) summary data while accounting for linkage disequilibrium among variants. We applied our estimator to ultra-large-scale GWAS summary data of 30 common traits and diseases to gain insights into their local genetic architecture. First, we found that common SNPs have a high contribution to the heritability of all studied traits. Second, we identified traits for which the majority of the SNP heritability can be confined to a small percentage of the genome. Third, we identified GWAS risk loci where the entire locus explains significantly more variance in the trait than the GWAS reported variants. Finally, we identified loci that explain a significant amount of heritability across multiple traits.

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Crossref · 10.1016/j.ajhg.2016.05.013

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  • Several studies have demonstrated that non-genome-wide effects explain an important proportion of the effect of genetic variation on disease susceptibility.

    “The commonly used threshold of genome-wide significance (p-value = 5×10−8) has played an important role in making human genetic study results robust; however, several studies have demonstrated that non-genome-wide effects explain an important proportion of the effect of genetic variation on disease susceptibility. (18, 19)”
  • Traditional Hi-C guided gene mapping restricts analysis to genome-wide significant loci, while H-MAGMA can leverage sub-threshold loci that explain a significant proportion of heritability.

    “While traditional Hi-C guided gene mapping restricts its analysis to genome-wide significant (GWS) loci7, H-MAGMA can leverage signals from sub-threshold loci that explain a significant proportion of heritability8.”

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Authors
Shi, H., Kichaev, G., & Pasaniuc, B.
Affiliations
University of California, Los Angeles (US)
Venue
The American Journal of Human Genetics
Publisher
Elsevier BV
Published
2016-07
Volume
99
Issue
1
Pages
139-153
ISSN
0002-9297 (ISSN-L)
OpenAlex
W2469213152
Cited by
387
References
65
Citations by year
2026: 20 · 2025: 30 · 2024: 43 · 2023: 35 · 2022: 52 · 2021: 48 · 2020: 36 · 2019: 60 · 2018: 36 · 2017: 24 · 2016: 3
FWCI
32.79
Type
journal article
Language
en
Open access
Locations
  • The American Journal of Human Genetics (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and phenotypic traits in livestock
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Mapping and Diversity in Plants and Animals
Keywords
genetic architecture, complex traits, common SNPs, linkage disequilibrium, variance components, GWAS summary data, genetic susceptibility loci, heritability estimation
MeSH terms
Humans, Models, Genetic, Phenotype, Linkage Disequilibrium, Genetic Predisposition to Disease, Multifactorial Inheritance, Polymorphism, Single Nucleotide, Quantitative Trait Loci, Genome-Wide Association Study, Datasets as Topic

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