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A genome-wide scan for common alleles affecting risk for autism
Date Issued
2010-07-27
Date Available
2013-06-19T12:04:57Z
Abstract
Although autism spectrum disorders (ASDs) have a substantial genetic basis, most of the known genetic risk has been traced to rare variants, principally copy number variants (CNVs). To identify common risk variation, the Autism Genome Project (AGP) Consortium genotyped 1558 rigorously defined ASD families for 1 million single-nucleotide polymorphisms (SNPs) and analyzed these SNP genotypes for association with ASD. In one of four primary association analyses, the association signal for marker rs4141463, located within MACROD2, crossed the genome-wide association significance threshold of P < 5 × 10−8. When a smaller replication sample was analyzed, the risk allele at rs4141463 was again over-transmitted; yet, consistent with the winner's curse, its effect size in the replication sample was much smaller; and, for the combined samples, the association signal barely fell below the P < 5 × 10−8 threshold. Exploratory analyses of phenotypic subtypes yielded no significant associations after correction for multiple testing. They did, however, yield strong signals within several genes, KIAA0564, PLD5, POU6F2, ST8SIA2 and TAF1C.
Type of Material
Journal Article
Publisher
Oxford University Press
Journal
Human Molecular Genetics
Volume
19
Issue
20
Start Page
4072
End Page
4082
Copyright (Published Version)
2010, the author
Language
English
Status of Item
Peer reviewed
This item is made available under a Creative Commons License
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Owning collection
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472
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