Abstract:
PURPOSE:To investigate the frequency of variants in 3 major age-related macular degeneration (AMD)-associated loci in patients of European-American descent with polypoidal choroidal vasculopathy (PCV). DESIGN:Cross-sectional, case-control association study. PARTICIPANTS:Fifty-five patients with PCV, 368 patients with advanced AMD, and 368 age-matched and ethnically matched unaffected controls of European-American descent. METHODS:Association analysis of allele and genotype frequencies, determined by TaqMan assays, was performed for the following haplotype-tagging single nucleotide polymorphisms (htSNPs): risk alleles in the complement factor H (CFH) gene (Y402H and IVS14) in the ARMS2/HTRA1 locus on 10q26 (A69S) and protective alleles in CFH (IVS1 and IVS6) and in the complement factor B/complement component C2 (CFB/C2) locus (IVS10 and H9L). MAIN OUTCOME MEASURES:Allele and genotype frequencies of the htSNPs in the CFH, CFB/C2, and ARMS2/HTRA1 loci. RESULTS:Four AMD-associated haplotype-tagging alleles (rs547154, rs1061170, rs1410996, rs10490924) in the 3 major loci, CFH, CFB/C2, and ARMS2/HTRA1, also were statistically significantly associated with the PCV phenotype (P<0.05). Three other alleles from the same loci (rs4151667, rs529825, rs3766404) showed a trend toward association (P<0.2) but did not reach statistical significance, possibly because of the combined effects of a relatively small sample size and low minor allele frequency in the screened populations. CONCLUSIONS:The PCV phenotype in Caucasian patients is associated with the major alleles/genotypes in the AMD-associated loci, suggesting that PCV and AMD are genetically similar in the tested loci.
journal_name
Ophthalmologyjournal_title
Ophthalmologyauthors
Lima LH,Schubert C,Ferrara DC,Merriam JE,Imamura Y,Freund KB,Spaide RF,Yannuzzi LA,Allikmets Rdoi
10.1016/j.ophtha.2009.12.018subject
Has Abstractpub_date
2010-08-01 00:00:00pages
1567-70issue
8eissn
0161-6420issn
1549-4713pii
S0161-6420(09)01443-2journal_volume
117pub_type
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