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PMID |
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TITLE |
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Genome-wide interaction analysis reveals replicated epistatic effects on brain structure. |
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ABSTRACT |
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The discovery of several genes that affect the risk for Alzheimer's disease ignited a worldwide search for single-nucleotide polymorphisms (SNPs), common genetic variants that affect the brain. Genome-wide search of all possible SNP-SNP interactions is challenging and rarely attempted because of the complexity of conducting approximately 10(11) pairwise statistical tests. However, recent advances in machine learning, for example, iterative sure independence screening, make it possible to analyze data sets with vastly more predictors than observations. Using an implementation of the sure independence screening algorithm (called EPISIS), we performed a genome-wide interaction analysis testing all possible SNP-SNP interactions affecting regional brain volumes measured on magnetic resonance imaging and mapped using tensor-based morphometry. We identified a significant SNP-SNP interaction between rs1345203 and rs1213205 that explains 1.9% of the variance in temporal lobe volume. We mapped the whole brain, voxelwise effects of the interaction in the Alzheimer's Disease Neuroimaging Initiative data set and separately in an independent replication data set of healthy twins (Queensland Twin Imaging). Each additional loading in the interaction effect was associated with approximately 5% greater brain regional brain volume (a protective effect) in both Alzheimer's Disease Neuroimaging Initiative and Queensland Twin Imaging samples. |
Copyright © 2015 Elsevier Inc. All rights reserved. |
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DATE PUBLISHED |
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HISTORY |
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PUBSTATUS |
PUBSTATUSDATE |
received |
2013/05/02 |
revised |
2014/02/10 |
accepted |
2014/02/16 |
aheadofprint |
2014/08/27 |
entrez |
2014/09/30 06:00 |
pubmed |
2014/09/30 06:00 |
medline |
2015/08/28 06:00 |
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AUTHORS |
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NAME |
COLLECTIVENAME |
LASTNAME |
FORENAME |
INITIALS |
AFFILIATION |
AFFILIATIONINFO |
Hibar DP |
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Hibar |
Derrek P |
DP |
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Imaging Genetics Center, Institute for Neuroimaging and Informatics, University of Southern California, Los Angeles, CA, USA. |
Stein JL |
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Stein |
Jason L |
JL |
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Imaging Genetics Center, Institute for Neuroimaging and Informatics, University of Southern California, Los Angeles, CA, USA. |
Jahanshad N |
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Jahanshad |
Neda |
N |
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Imaging Genetics Center, Institute for Neuroimaging and Informatics, University of Southern California, Los Angeles, CA, USA. |
Kohannim O |
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Kohannim |
Omid |
O |
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Imaging Genetics Center, Institute for Neuroimaging and Informatics, University of Southern California, Los Angeles, CA, USA. |
Hua X |
|
Hua |
Xue |
X |
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Imaging Genetics Center, Institute for Neuroimaging and Informatics, University of Southern California, Los Angeles, CA, USA. |
Toga AW |
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Toga |
Arthur W |
AW |
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Imaging Genetics Center, Institute for Neuroimaging and Informatics, University of Southern California, Los Angeles, CA, USA. |
McMahon KL |
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McMahon |
Katie L |
KL |
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Centre for Magnetic Resonance, School of Psychology, University of Queensland, Brisbane, Queensland, Australia. |
de Zubicaray GI |
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de Zubicaray |
Greig I |
GI |
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Functional Magnetic Resonance Imaging Laboratory, School of Psychology, University of Queensland, Brisbane, Queensland, Australia. |
Martin NG |
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Martin |
Nicholas G |
NG |
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Genetic Epidemiology Laboratory, Queensland Institute of Medical Research, Brisbane, Australia. |
Wright MJ |
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Wright |
Margaret J |
MJ |
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Genetic Epidemiology Laboratory, Queensland Institute of Medical Research, Brisbane, Australia. |
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Alzheimer's Disease Neuroimaging Initiative |
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Weiner MW |
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Weiner |
Michael W |
MW |
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Department of Radiology, UC San Francisco, San Francisco, CA, USA; Department of Medicine, UC San Francisco, San Francisco, CA, USA; Department of Psychiatry, UC San Francisco, San Francisco, CA, USA; Department of Veterans Affairs Medical Center, San Francisco, CA, USA. |
Thompson PM |
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Thompson |
Paul M |
PM |
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Imaging Genetics Center, Institute for Neuroimaging and Informatics, University of Southern California, Los Angeles, CA, USA. Electronic address: pthomp@usc.edu. |
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INVESTIGATORS |
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JOURNAL |
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VOLUME: 36 Suppl 1 |
ISSUE: |
TITLE: Neurobiology of aging |
ISOABBREVIATION: Neurobiol. Aging |
YEAR: 2015 |
MONTH: Jan |
DAY: |
MEDLINEDATE: |
SEASON: |
CITEDMEDIUM: Internet |
ISSN: 1558-1497 |
ISSNTYPE: Electronic |
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MEDLINE JOURNAL |
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MEDLINETA: Neurobiol Aging |
COUNTRY: United States |
ISSNLINKING: 0197-4580 |
NLMUNIQUEID: 8100437 |
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PUBLICATION TYPE |
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PUBLICATIONTYPE TEXT |
Journal Article |
Research Support, N.I.H., Extramural |
Research Support, Non-U.S. Gov't |
Research Support, U.S. Gov't, Non-P.H.S. |
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COMMENTS AND CORRECTIONS |
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REFTYPE |
REFSOURCE |
REFPMID |
NOTE |
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GRANTS |
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GRANTID |
AGENCY |
COUNTRY |
AG016570 |
NIA NIH HHS |
United States |
EB01651 |
NIBIB NIH HHS |
United States |
F30 AG041681 |
NIA NIH HHS |
United States |
F30 AG041681 |
NIA NIH HHS |
United States |
K01 AG030514 |
NIA NIH HHS |
United States |
K01 AG030514 |
NIA NIH HHS |
United States |
K99 MH102357 |
NIMH NIH HHS |
United States |
LM05639 |
NLM NIH HHS |
United States |
P30 AG010129 |
NIA NIH HHS |
United States |
P30 AG010129 |
NIA NIH HHS |
United States |
P41 EB015922 |
NIBIB NIH HHS |
United States |
P50 AG016570 |
NIA NIH HHS |
United States |
R01 AG040060 |
NIA NIH HHS |
United States |
R01 EB007813 |
NIBIB NIH HHS |
United States |
R01 EB007813 |
NIBIB NIH HHS |
United States |
R01 EB008281 |
NIBIB NIH HHS |
United States |
R01 EB008281 |
NIBIB NIH HHS |
United States |
R01 EB008432 |
NIBIB NIH HHS |
United States |
R01 EB008432 |
NIBIB NIH HHS |
United States |
R01 EB016516 |
NIBIB NIH HHS |
United States |
R01 HD050735 |
NICHD NIH HHS |
United States |
R01 HD050735 |
NICHD NIH HHS |
United States |
R01 LM005639 |
NLM NIH HHS |
United States |
R21 EB001561 |
NIBIB NIH HHS |
United States |
R21 RR019771 |
NCRR NIH HHS |
United States |
RF1 AG041915 |
NIA NIH HHS |
United States |
RR019771 |
NCRR NIH HHS |
United States |
U01 AG024904 |
NIA NIH HHS |
United States |
U01 AG024904 |
NIA NIH HHS |
United States |
U24 AG021886 |
NIA NIH HHS |
United States |
U54 EB020403 |
NIBIB NIH HHS |
United States |
UL1 TR001108 |
NCATS NIH HHS |
United States |
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Canadian Institutes of Health Research |
Canada |
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GENERAL NOTE |
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KEYWORDS |
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KEYWORD |
Epistasis |
GWAS |
GWIA |
Genome-wide |
Interaction |
Sure independence screening |
Tensor-based morphometry |
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MESH HEADINGS |
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DESCRIPTORNAME |
QUALIFIERNAME |
Aged |
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Aged, 80 and over |
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Alzheimer Disease |
pathology |
Epistasis, Genetic |
pathology |
Female |
pathology |
Genome-Wide Association Study |
pathology |
Humans |
pathology |
Magnetic Resonance Imaging |
methods |
Male |
methods |
Neuroimaging |
methods |
Polymorphism, Single Nucleotide |
genetics |
Risk |
genetics |
Temporal Lobe |
pathology |
Twins |
pathology |
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SUPPLEMENTARY MESH |
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GENE SYMBOLS |
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CHEMICALS |
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OTHER ID's |
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OTHERID |
SOURCE |
NIHMS647295 |
NLM |
PMC4332874 |
NLM |
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