作者
Elizabeth G Holliday, Albert V Smith, Belinda K Cornes, Gabriëlle HS Buitendijk, Richard A Jensen, Xueling Sim, Thor Aspelund, Tin Aung, Paul N Baird, Eric Boerwinkle, Ching Yu Cheng, Cornelia M van Duijn, Gudny Eiriksdottir, Vilmundur Gudnason, Tamara Harris, Alex W Hewitt, Michael Inouye, Fridbert Jonasson, Barbara EK Klein, Lenore Launer, Xiaohui Li, Gerald Liew, Thomas Lumley, Patrick McElduff, Barbara McKnight, Paul Mitchell, Bruce M Psaty, Elena Rochtchina, Jerome I Rotter, Rodney J Scott, Wanting Tay, Kent Taylor, Yik Ying Teo, André G Uitterlinden, Ananth Viswanathan, Sophia Xie, Wellcome Trust Case Control Consortium 2, Johannes R Vingerling, Caroline CW Klaver, E Shyong Tai, David Siscovick, Ronald Klein, Mary Frances Cotch, Tien Y Wong, John Attia, Jie Jin Wang
发表日期
2013/1/11
期刊
PloS one
卷号
8
期号
1
页码范围
e53830
出版商
Public Library of Science
简介
Genetic factors explain a majority of risk variance for age-related macular degeneration (AMD). While genome-wide association studies (GWAS) for late AMD implicate genes in complement, inflammatory and lipid pathways, the genetic architecture of early AMD has been relatively under studied. We conducted a GWAS meta-analysis of early AMD, including 4,089 individuals with prevalent signs of early AMD (soft drusen and/or retinal pigment epithelial changes) and 20,453 individuals without these signs. For various published late AMD risk loci, we also compared effect sizes between early and late AMD using an additional 484 individuals with prevalent late AMD. GWAS meta-analysis confirmed previously reported association of variants at the complement factor H (CFH) (peak P = 1.5×10−31) and age-related maculopathy susceptibility 2 (ARMS2) (P = 4.3×10−24) loci, and suggested Apolipoprotein E (ApoE) polymorphisms (rs2075650; P = 1.1×10−6) associated with early AMD. Other possible loci that did not reach GWAS significance included variants in the zinc finger protein gene GLI3 (rs2049622; P = 8.9×10−6) and upstream of GLI2 (rs6721654; P = 6.5×10−6), encoding retinal Sonic hedgehog signalling regulators, and in the tyrosinase (TYR) gene (rs621313; P = 3.5×10−6), involved in melanin biosynthesis. For a range of published, late AMD risk loci, estimated effect sizes were significantly lower for early than late AMD. This study confirms the involvement of multiple established AMD risk variants in early AMD, but suggests weaker genetic effects on the risk of early AMD relative to late AMD. Several biological processes …
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