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Proceedings of the National Academy of Sciences
Article . 2010 . Peer-reviewed
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Genome-wide association study of advanced age-related macular degeneration identifies a role of the hepatic lipase gene ( LIPC )

Authors: Betsy Campochiaro; Joanna E. Merriam; Milam A. Brantley; R. Theodore Smith; Peter A. Campochiaro; Lucia Sobrin; Edwin C. Oh; +24 Authors

Genome-wide association study of advanced age-related macular degeneration identifies a role of the hepatic lipase gene ( LIPC )

Abstract

Advanced age-related macular degeneration (AMD) is the leading cause of late onset blindness. We present results of a genome-wide association study of 979 advanced AMD cases and 1,709 controls using the Affymetrix 6.0 platform with replication in seven additional cohorts (totaling 5,789 unrelated cases and 4,234 unrelated controls). We also present a comprehensive analysis of copy-number variations and polymorphisms for AMD. Our discovery data implicated the association between AMD and a variant in the hepatic lipase gene ( LIPC ) in the high-density lipoprotein cholesterol (HDL) pathway (discovery P = 4.53e-05 for rs493258). Our LIPC association was strongest for a functional promoter variant, rs10468017, ( P = 1.34e-08), that influences LIPC expression and serum HDL levels with a protective effect of the minor T allele (HDL increasing) for advanced wet and dry AMD. The association we found with LIPC was corroborated by the Michigan/Penn/Mayo genome-wide association study; the locus near the tissue inhibitor of metalloproteinase 3 was corroborated by our replication cohort for rs9621532 with P = 3.71e-09. We observed weaker associations with other HDL loci ( ABCA1 , P = 9.73e-04; cholesterylester transfer protein, P = 1.41e-03; FADS1-3 , P = 2.69e-02). Based on a lack of consistent association between HDL increasing alleles and AMD risk, the LIPC association may not be the result of an effect on HDL levels, but it could represent a pleiotropic effect of the same functional component. Results implicate different biologic pathways than previously reported and provide new avenues for prevention and treatment of AMD.

Keywords

Risk, Tissue Inhibitor of Metalloproteinase-3, HDL, Genotype, Reverse Transcriptase Polymerase Chain Reaction, Cholesterol, HDL, Lipase, Lipid pathway, Lipids, Polymorphism, Single Nucleotide, Macular Degeneration, Delta-5 Fatty Acid Desaturase, Gene Expression Regulation, Case-Control Studies, Humans, Complex disease, Retinal degeneration, Alleles, Genome-Wide Association Study, Oligonucleotide Array Sequence Analysis

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    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
426
Top 1%
Top 1%
Top 0.1%
bronze