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Genome-wide association identifies SKIV2L and MYRIP as protective factors for age-related macular degeneration

Authors
Journal
Genes and Immunity
1466-4879
Publisher
Nature Publishing Group
Publication Date
Volume
11
Issue
8
Identifiers
DOI: 10.1038/gene.2010.39
Keywords
  • Article

Abstract

Age-related macular degeneration (AMD) is the leading cause of blindness in the elderly in the developed world. We conducted a genome-wide association study in a series of families enriched for AMD and completed a meta-analysis of this new data with results from reanalysis of an existing study of a late-stage case/control cohort. We tested the top findings for replication in 1 896 cases and 1 866 controls and identified two novel genetic protective factors for AMD. In addition to the CFH (p=2.3×10−64) and ARMS2 (p=1.2×10−60) loci, we observed a protective effect at rs429608, an intronic SNP in SKIV2L (p=5.3×10−15), a gene near the C2/BF locus, that indicates the protective effect may be mediated by variants other than the C2/BF variants previously studied. Haplotype analysis at this locus identified three protective haplotypes defined by the rs429608 protective allele. We also identified a new potentially protective effect at rs2679798 in MYRIP (p=2.9×10−4), a gene involved in retinal pigment epithelium melanosome trafficking. Interestingly, MYRIP was initially identified in the family-based scan and was confirmed in the case-control set. From these efforts, we report the identification of two novel protective factors for AMD and confirm the previously known associations at CFH, ARMS2 and C3.

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