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Title: Association between apolipoprotein E polymorphisms and age-related macular degeneration: A HuGE review and meta-analysis
Authors: Ammarin Thakkinstian
Steve Bowe
Mark McEvoy
Wayne Smith
John Attia
Mahidol University
University of Newcastle, Australia
Keywords: Medicine
Issue Date: 1-Nov-2006
Citation: American Journal of Epidemiology. Vol.164, No.9 (2006), 813-822
Abstract: A possible association between apolipoprotein E polymorphisms and age-related macular degeneration has been investigated numerous times, with conflicting results. A previous analysis pooling results from four studies (Schmidt et al., Ophthalmic Genet 2002;23:209-23) suggested an association, but those investigators did not document allele frequencies, the magnitude of the association, or the possible genetic mode of action. Thus, the authors searched MEDLINE from 1966 to December 2005 for any English-language studies reporting genetic associations. Data and study quality were assessed in duplicate. Pooling was performed while checking for heterogeneity and publication bias. Frequencies of the E2and E4alleles in Caucasians were approximately 8% and 15%, respectively. Allele- and genotype-based tests of association indicated a risk effect of up to 20% for E2and a protective effect of up to 40% for E4. E2appeared to act in a recessive mode and E4in a dominant mode. There appears to be a differential effect of the E2and E4alleles on the risk of age-related macular degeneration, although the possibility of survivor bias needs to be ruled out more definitively. Copyright © 2006 by the Johns Hopkins Bloomberg School of Public Health. All rights reserved.
ISSN: 14766256
Appears in Collections:Scopus 2006-2010

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