Document Detail

Methods for detecting associations with rare variants for common diseases: application to analysis of sequence data.
MedLine Citation:
PMID:  18691683     Owner:  NLM     Status:  MEDLINE    
Although whole-genome association studies using tagSNPs are a powerful approach for detecting common variants, they are underpowered for detecting associations with rare variants. Recent studies have demonstrated that common diseases can be due to functional variants with a wide spectrum of allele frequencies, ranging from rare to common. An effective way to identify rare variants is through direct sequencing. The development of cost-effective sequencing technologies enables association studies to use sequence data from candidate genes and, in the future, from the entire genome. Although methods used for analysis of common variants are applicable to sequence data, their performance might not be optimal. In this study, it is shown that the collapsing method, which involves collapsing genotypes across variants and applying a univariate test, is powerful for analyzing rare variants, whereas multivariate analysis is robust against inclusion of noncausal variants. Both methods are superior to analyzing each variant individually with univariate tests. In order to unify the advantages of both collapsing and multiple-marker tests, we developed the Combined Multivariate and Collapsing (CMC) method and demonstrated that the CMC method is both powerful and robust. The CMC method can be applied to either candidate-gene or whole-genome sequence data.
Bingshan Li; Suzanne M Leal
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2008-08-07
Journal Detail:
Title:  American journal of human genetics     Volume:  83     ISSN:  1537-6605     ISO Abbreviation:  Am. J. Hum. Genet.     Publication Date:  2008 Sep 
Date Detail:
Created Date:  2008-09-12     Completed Date:  2008-10-20     Revised Date:  2013-06-05    
Medline Journal Info:
Nlm Unique ID:  0370475     Medline TA:  Am J Hum Genet     Country:  United States    
Other Details:
Languages:  eng     Pagination:  311-21     Citation Subset:  IM    
Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA.
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MeSH Terms
Genetic Markers
Genetic Predisposition to Disease*
Genetic Variation*
Genome, Human*
Linkage Disequilibrium
Models, Genetic*
Polymorphism, Single Nucleotide*
Grant Support
Reg. No./Substance:
0/Genetic Markers

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