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Genome-wide analysis of copy number variants in age-related macular degeneration
Journal article   Open access   Peer reviewed

Genome-wide analysis of copy number variants in age-related macular degeneration

Kacie J Meyer, Lea K Davis, Emily I Schindler, John S Beck, Danielle S Rudd, A Jason Grundstad, Todd E Scheetz, Terry A Braun, John H Fingert, Wallace L Alward, …
Human genetics, Vol.129(1), pp.91-100
01/2011
DOI: 10.1007/s00439-010-0904-6
PMCID: PMC3613489
PMID: 20981449

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Abstract

Age-related macular degeneration (AMD) is a complex genetic disease, with many loci demonstrating appreciable attributable disease risk. Despite significant progress toward understanding the genetic and environmental etiology of AMD, identification of additional risk factors is necessary to fully appreciate and treat AMD pathology. In this study, we investigated copy number variants (CNVs) as potential AMD risk variants in a cohort of 400 AMD patients and 500 AMD-free controls ascertained at the University of Iowa. We used three publicly available copy number programs to analyze signal intensity data from Affymetrix GeneChip SNP Microarrays. CNVs were ranked based on prevalence in the disease cohort and absence from the control group; high interest CNVs were subsequently confirmed by qPCR. While we did not observe a single-locus "risk CNV" that could account for a major fraction of AMD, we identified several rare and overlapping CNVs containing or flanking compelling candidate genes such as NPHP1 and EFEMP1. These and other candidate genes highlighted by this study deserve further scrutiny as sources of genetic risk for AMD.
Choroidal Neovascularization - epidemiology Genetic Predisposition to Disease Genome-Wide Association Study Prevalence Membrane Proteins - genetics Extracellular Matrix Proteins - genetics Humans Risk Factors Male DNA Copy Number Variations - genetics Macular Degeneration - genetics Adaptor Proteins, Signal Transducing - genetics Aged, 80 and over Macular Degeneration - epidemiology Female Iowa - epidemiology Aged Polymorphism, Single Nucleotide Choroidal Neovascularization - genetics Cohort Studies

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