Typing of ARMS2 and CFH in age-related macular degeneration: Case-control study and assessment of frequency in the Italian population

Federico Ricci, Stefania Zampatti, Francesca D'Abbruzzi, Filippo Missiroli, Claudia Martone, Tiziana Lepre, Ilenia Pietrangeli, Cecilia Sinibaldi, Cristina Peconi, Giuseppe Novelli, Giardina Emiliano

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Objectives: To determine the effects of the polymorphisms CFH Tyr402His and ARMS2 del443ins54 on susceptibility to age-related macular degeneration (AMD) and to find the frequencies of these single-nucleotide polymorphisms in an Italian population that was not examined clinically. Methods: A total of 286 control subjects (126 men and 160 women) and 159 white patients (73 men and 86 women) harboring exudative AMD in 1 eye were recruited. A third group of 182 DNA samples from blood donors of the same geographical areas were also typed to assess the frequency of CFH Tyr402His and ARMS2 del443ins54 polymorphisms in the general population. The data were analyzed statistically by a standard 2X2 table, Fisher exact tests, and odds ratios. Results: The deletion-insertion at chromosome 10q26 (del443ins54) showed the strongest association withAMD in terms of both P value and odds ratio (P=2.7X10-15; odds ratio=3.25), and a highly significant association was also confirmed for Tyr402His at the CFH locus (P=9.9X10-13; odds ratio=2.86). We found no differences in allele and genotype association between classic and occult choroidal neovascularization. We also observed that 39% of the samples in the general Italian population were at least 5.4 times more likely than control subjects to develop AMD. Conclusions: To our knowledge, this is the first confirmation of the association of del443ins54 in Italian patients with AMD, and we also confirmed the association of Tyr402His with CFH. Genetic analysis of the general population suggested that analysis of the ARMS2 and CFH risk alleles alone may be helpful in differentiating high-risk individuals (odds ratio >5.00) from low-risk individuals (odds ratio

Original languageEnglish
Pages (from-to)1368-1372
Number of pages5
JournalArchives of Ophthalmology
Volume127
Issue number10
DOIs
Publication statusPublished - Oct 2009

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Macular Degeneration
Case-Control Studies
Odds Ratio
Population
Alleles
Choroidal Neovascularization
Blood Donors
Single Nucleotide Polymorphism
Chromosomes
Genotype
DNA

ASJC Scopus subject areas

  • Ophthalmology

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Typing of ARMS2 and CFH in age-related macular degeneration : Case-control study and assessment of frequency in the Italian population. / Ricci, Federico; Zampatti, Stefania; D'Abbruzzi, Francesca; Missiroli, Filippo; Martone, Claudia; Lepre, Tiziana; Pietrangeli, Ilenia; Sinibaldi, Cecilia; Peconi, Cristina; Novelli, Giuseppe; Emiliano, Giardina.

In: Archives of Ophthalmology, Vol. 127, No. 10, 10.2009, p. 1368-1372.

Research output: Contribution to journalArticle

Ricci, F, Zampatti, S, D'Abbruzzi, F, Missiroli, F, Martone, C, Lepre, T, Pietrangeli, I, Sinibaldi, C, Peconi, C, Novelli, G & Emiliano, G 2009, 'Typing of ARMS2 and CFH in age-related macular degeneration: Case-control study and assessment of frequency in the Italian population', Archives of Ophthalmology, vol. 127, no. 10, pp. 1368-1372. https://doi.org/10.1001/archophthalmol.2009.237
Ricci, Federico ; Zampatti, Stefania ; D'Abbruzzi, Francesca ; Missiroli, Filippo ; Martone, Claudia ; Lepre, Tiziana ; Pietrangeli, Ilenia ; Sinibaldi, Cecilia ; Peconi, Cristina ; Novelli, Giuseppe ; Emiliano, Giardina. / Typing of ARMS2 and CFH in age-related macular degeneration : Case-control study and assessment of frequency in the Italian population. In: Archives of Ophthalmology. 2009 ; Vol. 127, No. 10. pp. 1368-1372.
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AU - Missiroli, Filippo

AU - Martone, Claudia

AU - Lepre, Tiziana

AU - Pietrangeli, Ilenia

AU - Sinibaldi, Cecilia

AU - Peconi, Cristina

AU - Novelli, Giuseppe

AU - Emiliano, Giardina

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N2 - Objectives: To determine the effects of the polymorphisms CFH Tyr402His and ARMS2 del443ins54 on susceptibility to age-related macular degeneration (AMD) and to find the frequencies of these single-nucleotide polymorphisms in an Italian population that was not examined clinically. Methods: A total of 286 control subjects (126 men and 160 women) and 159 white patients (73 men and 86 women) harboring exudative AMD in 1 eye were recruited. A third group of 182 DNA samples from blood donors of the same geographical areas were also typed to assess the frequency of CFH Tyr402His and ARMS2 del443ins54 polymorphisms in the general population. The data were analyzed statistically by a standard 2X2 table, Fisher exact tests, and odds ratios. Results: The deletion-insertion at chromosome 10q26 (del443ins54) showed the strongest association withAMD in terms of both P value and odds ratio (P=2.7X10-15; odds ratio=3.25), and a highly significant association was also confirmed for Tyr402His at the CFH locus (P=9.9X10-13; odds ratio=2.86). We found no differences in allele and genotype association between classic and occult choroidal neovascularization. We also observed that 39% of the samples in the general Italian population were at least 5.4 times more likely than control subjects to develop AMD. Conclusions: To our knowledge, this is the first confirmation of the association of del443ins54 in Italian patients with AMD, and we also confirmed the association of Tyr402His with CFH. Genetic analysis of the general population suggested that analysis of the ARMS2 and CFH risk alleles alone may be helpful in differentiating high-risk individuals (odds ratio >5.00) from low-risk individuals (odds ratio

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