Age-related macular degeneration is associated with an unstable ARMS2 (LOC387715) mRNA

Fritsche, Lars G. and Loenhardt, Thomas and Janssen, Andreas and Fisher, Sheila A. and Rivera, Andrea and Keilhauer, Claudia N. and Weber, Bernhard H. F. (2008) Age-related macular degeneration is associated with an unstable ARMS2 (LOC387715) mRNA. NATURE GENETICS, 40 (7). pp. 892-896. ISSN 1061-4036, 1546-1718

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Abstract

Age-related macular degeneration (AMD) is a prevalent multifactorial disorder of the central retina(1-3). Genetic variants at two chromosomal loci, 1q31 and 10q26, confer major disease risks, together accounting for more than 50% of AMD pathology(4-9). Signals at 10q26 center over two nearby genes, ARMS2 (age-related maculopathy susceptibility 2, also known as LOC387715)(8,9) and HTRA1 (high-temperature requirement factor A1)(10,11), suggesting two equally probable candidates. Here we show that a deletion-insertion polymorphism in ARMS2 (NM_001099667.1: c.*372_815del443ins54) is strongly associated with AMD, directly affecting the transcript by removing the polyadenylation signal and inserting a 54-bp element known to mediate rapid mRNA turnover. As a consequence, expression of ARMS2 in homozygous carriers of the indel variant is not detectable. Confirming previous findings(12), we demonstrate a mitochondrial association of the normal protein and further define its retinal localization to the ellipsoid region of the photoreceptors. Our data suggest that ARMS2 has a key role in AMD, possibly through mitochondria-related pathways.

Item Type: Article
Uncontrolled Keywords: COMPLEMENT FACTOR-H; X-LINKED RETINOSCHISIS; MACULOPATHY; HTRA1; SUSCEPTIBILITY; POLYMORPHISM; HAPLOTYPE; DISEASE; VARIANT; GENE;
Subjects: 600 Technology > 610 Medical sciences Medicine
Divisions: Medicine > Lehrstuhl für Humangenetik
Depositing User: Dr. Gernot Deinzer
Date Deposited: 29 Oct 2020 05:36
Last Modified: 29 Oct 2020 05:36
URI: https://pred.uni-regensburg.de/id/eprint/30699

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