Cited by 344Genetic Associations and EpidemiologyGenomics and Rare DiseasesForensic and Genetic Research

The DOI matches its Crossref record; 65 of the 68 references it cites were found in a registry or an index.

Shifting Paradigm of Association Studies: Value of Rare Single-Nucleotide Polymorphisms

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Abstract

Currently, single-nucleotide polymorphisms (SNPs) with minor allele frequency (MAF) of >5% are preferentially used in case-control association studies of common human diseases. Recent technological developments enable inexpensive and accurate genotyping of a large number of SNPs in thousands of cases and controls, which can provide adequate statistical power to analyze SNPs with MAF <5%. Our purpose was to determine whether evaluating rare SNPs in case-control association studies could help identify causal SNPs for common diseases. We suggest that slightly deleterious SNPs (sdSNPs) subjected to weak purifying selection are major players in genetic control of susceptibility to common diseases. We compared the distribution of MAFs of synonymous SNPs with that of nonsynonymous SNPs (1) predicted to be benign, (2) predicted to be possibly damaging, and (3) predicted to be probably damaging by PolyPhen. Our sources of data were the International HapMap Project, ENCODE, and the SeattleSNPs project. We found that the MAF distribution of possibly and probably damaging SNPs was shifted toward rare SNPs compared with the MAF distribution of benign and synonymous SNPs that are not likely to be functional. We also found an inverse relationship between MAF and the proportion of nsSNPs predicted to be protein disturbing. On the basis of this relationship, we estimated the joint probability that a SNP is functional and would be detected as significant in a case-control study. Our analysis suggests that including rare SNPs in genotyping platforms will advance identification of causal SNPs in case-control association studies, particularly as sample sizes increase.

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Crossref · 10.1016/j.ajhg.2007.09.006

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  1. Long, 1997, Genetic analysis of complex diseases, Science, 275, 1328

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Metadata

Authors
Gorlov, I. P., Gorlova, O. Y., Sunyaev, S. R., Spitz, M. R., & Amos, C. I.
Affiliations
  • The University of Texas MD Anderson Cancer Center (US)
  • Brigham and Women's Hospital (US)
Corresponding author
Amos, Christopher I.
Venue
The American Journal of Human Genetics
Publisher
Elsevier BV
Published
2008-01
Volume
82
Issue
1
Pages
100-112
ISSN
0002-9297 (ISSN-L)
OpenAlex
W2097349182
Cited by
338
References
68
Citations by year
2026: 2 · 2025: 3 · 2024: 9 · 2023: 9 · 2022: 7 · 2021: 10 · 2020: 16 · 2019: 10 · 2018: 7 · 2017: 10 · 2016: 15 · 2015: 17 · 2014: 28 · 2013: 27 · 2012: 41
FWCI
24.19
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)
Funders
  • National Institutes of Health
  • National Cancer Institute (P01CA034936, P01 CA 34936-14A1)
  • National Institute of Environmental Health Sciences (ES-09912, R01ES009912)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomics and Rare Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Forensic and Genetic Research
Keywords
minor allele frequency, case-control association, non-synonymous SNPs, synonymous SNPs, PolyPhen, purifying selection, disease susceptibility, genotyping platforms
MeSH terms
Gene Frequency, Genetics, Population, Humans, Genome, Human, Case-Control Studies, Genetic Predisposition to Disease, Mutation, Missense, Polymorphism, Single Nucleotide

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