Cited by 443Genetic Associations and EpidemiologyGenetic Mapping and Diversity in Plants and AnimalsForensic and Genetic Research

Combined Linkage and Association Sib-Pair Analysis for Quantitative Traits

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Fulker, D.W., Cherny, S.S., Sham, P.C., Hewitt, J.K.·1999·The American Journal of Human Genetics

Abstract

An extension to current maximum-likelihood variance-components procedures for mapping quantitative-trait loci in sib pairs that allows a simultaneous test of allelic association is proposed. The method involves modeling of the allelic means for a test of association, with simultaneous modeling of the sib-pair covariance structure for a test of linkage. By partitioning of the mean effect of a locus into between- and within-sibship components, the method controls for spurious associations due to population stratification and admixture. The power and efficacy of the method are illustrated through simulation of various models of both real and spurious association.

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  • Within-family genetic association estimates, such as those obtained from samples of siblings, can provide less biased estimates of direct genetic effects because they are unlikely to be affected by demographic and indirect genetic effects of parents.

    “Within-family genetic association estimates, such as those obtained from samples of siblings, can provide less biased estimates of direct genetic effects because they are unlikely to be affected by demographic and indirect genetic effects of parents7,17,30–34.”

    From Within-sibship genome-wide association analyses decrease bias in estimates of direct genetic effects (2022) · cites this paper as [30]

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Research works printed but not linked: 18

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Authors
Fulker, D. W., Cherny, S. S., Sham, P. C., & Hewitt, J. K.
Affiliations
  • University of London (GB)
  • University of Colorado Boulder (US)
Corresponding author
Cherny, S.S.
Venue
The American Journal of Human Genetics
Publisher
Elsevier BV
Published
1999-01
Volume
64
Issue
1
Pages
259-267
ISSN
0002-9297 (ISSN-L)
OpenAlex
W2078343620
Cited by
443
References
0
Citations by year
2026: 1 · 2025: 2 · 2024: 1 · 2023: 3 · 2022: 4 · 2021: 5 · 2020: 5 · 2019: 8 · 2018: 5 · 2017: 3 · 2016: 8 · 2015: 4 · 2014: 11 · 2013: 18 · 2012: 14
FWCI
15.73
Type
journal article
Language
en
Open access
Locations
  • The American Journal of Human Genetics (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • The HKU Scholars Hub (University of Hong Kong) (submittedVersion)
Funders
  • National Institutes of Health (5r01aa007330-12)
  • National Institute on Alcohol Abuse and Alcoholism (AA10556, AA-07330)
  • National Institute on Drug Abuse (DA11015, P60DA011015)
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 › Forensic and Genetic Research
Keywords
quantitative trait loci, sib-pair analysis, linkage analysis, allelic association, spurious association, population stratification, admixture
MeSH terms
Genotype, Humans, Genetic Linkage, Models, Genetic, Nuclear Family, Quantitative Trait, Heritable

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