Cited by 67Genetic Associations and EpidemiologyGenetic Mapping and Diversity in Plants and AnimalsGenetic and phenotypic traits in livestock

Genome-wide association studies and the genetic dissection of complex traits

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Sebastiani, Paola, Timofeev, Nadia, Dworkis, Daniel A., Perls, Thomas T., Steinberg, Martin H.·2009·American Journal of Hematology

Abstract

The availability of affordable high throughput technology for parallel genotyping has opened the field of genetics to genome-wide association studies (GWAS), and in the last few years hundreds of articles reporting results of GWAS for a variety of heritable traits have been published. What do these results tell us? Although GWAS have discovered a few hundred reproducible associations, this number is underwhelming in relation to the huge amount of data produced, and challenges the conjecture that common variants may be the genetic causes of common diseases. We argue that the massive amount of genetic data that result from these studies remains largely unexplored and unexploited because of the challenge of mining and modeling enormous data sets, the difficulty of using nontraditional computational techniques and the focus of accepted statistical analyses on controlling the false positive rate rather than limiting the false negative rate. In this article, we will review the common approach to analysis of GWAS data and then discuss options to learn more from these data. We will use examples from our ongoing studies of sickle cell anemia and also GWAS in multigenic traits.

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  • Most GWAS are conducted using a standard additive model, where heterozygous variant carriers exhibit a phenotype approximately intermediate in severity relative to each homozygous genotype.

    “most GWAS are conducted using a standard additive model [266], where it is hypothesized heterozygous variant carriers exhibit a phenotype approximately intermediate in severity relative to each homozygous genotype.”

    From Genetic architecture of Alzheimer's disease (2020) · cites this paper as [266]

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Authors
Sebastiani, P., Timofeev, N., Dworkis, D. A., Perls, T. T., & Steinberg, M. H.
Affiliations
Boston University (US)
Venue
American Journal of Hematology
Publisher
Wiley
Published
2009-06-29
Volume
84
Issue
8
Pages
504-515
ISSN
  • 0361-8609 (ISSN-L)
  • 1096-8652
OpenAlex
W2036839871
Cited by
67
References
152
Citations by year
2026: 3 · 2025: 3 · 2024: 1 · 2023: 1 · 2022: 3 · 2021: 4 · 2020: 6 · 2019: 1 · 2017: 4 · 2016: 1 · 2015: 4 · 2014: 3 · 2013: 4 · 2012: 7
FWCI
0.91
Type
journal article
Language
en
Open access
Locations
  • American Journal of Hematology (publishedVersion, other-oa)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute (R01-HL87681, R01 HL70735, R01HL087681, R01HL068970, R01 HL 68970, HL87681, R01HL070735)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Mapping and Diversity in Plants and Animals
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and phenotypic traits in livestock
Keywords
genome-wide association study, complex traits, common genetic variants, common diseases, false negative rate, polygenic traits, sickle cell disease, genetic dissection
MeSH terms
Anemia, Sickle Cell, Animals, Humans, Genome, Human, Sequence Analysis, DNA, Quantitative Trait Loci, Genome-Wide Association Study

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