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The contribution of genetic factors to phenotype and progression of drusen in early age-related macular degeneration. | LitMetric

The contribution of genetic factors to phenotype and progression of drusen in early age-related macular degeneration.

Graefes Arch Clin Exp Ophthalmol

Institute of Epidemiology and Social Medicine, University of Münster, Albert-Schweitzer-Campus 1-D 3, 48129, Münster, Germany,

Published: August 2014

AI Article Synopsis

Article Abstract

Purpose: Genetic factors contribute to the development and progression of age-related macular degeneration (AMD). We aimed to assess the association of drusen as phenotypic characteristics of early AMD and their progression with polymorphisms in the CFH, ABCA1, and ARMS2 genes.

Methods: In the Münster Aging and Retina Study (MARS), drusen were detected in 406 patients with early AMD and 170 healthy controls according to the International Classification using fundus photographs, with a follow-up examination after 2.6 years (median). Six drusen features were assessed: drusen number (
Results: Cross-sectionally, each drusen feature was associated with a higher frequency of the CFH and ARMS2 risk variants. Compared to healthy eyes, the CFH risk variant was more common in eyes with early as well as advanced drusen features, while the ARMS2 variant was only associated with advanced drusen. After 2.6 years, 43 % of the eyes showed a progression of at least 1 unit in the DSS. The progression from low to higher DSS was inversely associated with ABCA1 (OR = 0.54), and the progression from intermediate to high DSS was positively related to CFH rs1061170 (OR = 2.3; p < 0.05 for each).

Conclusions: Variants in CFH, ABCA1, and ARMS2 genes are related to the presence and progression of drusen in early AMD. CFH and, inversely, ABCA1 seem to be involved in early drusen development, while the role of ARMS2 is more pronounced in advanced stages of early AMD.

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http://dx.doi.org/10.1007/s00417-014-2690-7DOI Listing

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