Abstract | PURPOSE: DESIGN: Case-control study. PARTICIPANTS: Individuals (n = 4740) from 5 European cohorts. METHODS: We designed single-molecule molecular inversion probes for target selection and used next generation sequencing to sequence 87 single nucleotide polymorphisms (SNPs), coding and splice-site regions of 10 AMD-(related) genes (ARMS2, C3, C9, CD46, CFB, CFH, CFI, HTRA1, TIMP3, and SLC16A8), and 3 genes that cause inherited macular dystrophies (ABCA4, CTNNA1, and PRPH2). Genetic risk scores for common AMD risk variants were calculated based on effect size and genotype of 52 AMD-associated variants. Frequency of rare variants was compared between late AMD patients and control individuals with logistic regression analysis. MAIN OUTCOME MEASURES:
Genetic risk score, association of genetic variants with AMD, and genotype-phenotype correlations. RESULTS: We observed high concordance rates between our platform and other genotyping platforms for the 69 successfully genotyped SNPs (>96%) and for the rare variants (>99%). We observed a higher GRS for patients with late AMD compared with patients with early/intermediate AMD (P < 0.001) and individuals without AMD (P < 0.001). A higher proportion of pathogenic variants in the CFH (odds ratio [OR] = 2.88; P = 0.006), CFI (OR = 4.45; P = 0.005), and C3 (OR = 6.56; P = 0.0003) genes was observed in late AMD patients compared with control individuals. In 9 patients, we identified pathogenic variants in the PRPH2, ABCA4, and CTNNA1 genes, which allowed reclassification of these patients as having inherited macular dystrophy. CONCLUSIONS: This study reports a genotype assay for common and rare AMD genetic variants, which can identify individuals at intermediate to high genetic risk of late AMD and enables differential diagnosis of AMD-mimicking dystrophies. Our study supports sequencing of CFH, CFI, and C3 genes because they harbor rare high-risk variants. Carriers of these variants could be amendable for new treatments for AMD that currently are under development.
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Authors | Anita de Breuk, Ilhan E Acar, Eveline Kersten, Mascha M V A P Schijvenaars, Johanna M Colijn, Lonneke Haer-Wigman, Bjorn Bakker, Sarah de Jong, Magda A Meester-Smoor, Timo Verzijden, Tom O A R Missotten, Jordi Monés, Marc Biarnés, Daniel Pauleikhoff, Hans W Hense, Rufino Silva, Sandrina Nunes, Joana B Melo, Sascha Fauser, Carel B Hoyng, Marius Ueffing, Marieke J H Coenen, Caroline C W Klaver, Anneke I den Hollander, EYE-RISK Consortium |
Journal | Ophthalmology
(Ophthalmology)
Vol. 128
Issue 11
Pg. 1604-1617
(11 2021)
ISSN: 1549-4713 [Electronic] United States |
PMID | 32717343
(Publication Type: Journal Article, Multicenter Study, Research Support, Non-U.S. Gov't)
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Copyright | Copyright © 2020 American Academy of Ophthalmology. Published by Elsevier Inc. All rights reserved. |
Chemical References |
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Topics |
- Aged
- Aged, 80 and over
- Case-Control Studies
- DNA
(genetics)
- Eye Proteins
(genetics, metabolism)
- Genetic Predisposition to Disease
- Genotype
- Humans
- Macular Degeneration
(diagnosis, genetics, metabolism)
- Male
- Middle Aged
- Phenotype
- Polymorphism, Single Nucleotide
- Risk Factors
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