Zusammenfassung
Age-related macular degeneration (AMD) is a prevalent multifactorial disorder of the central retina1, 2, 3. Genetic variants at two chromosomal loci, 1q31 and 10q26, confer major disease risks, together accounting for more than 50% of AMD pathology4, 5, 6, 7, 8, 9. Signals at 10q26 center over two nearby genes, ARMS2 (age-related maculopathy susceptibility 2, also known as LOC387715)8, 9 and ...
Zusammenfassung
Age-related macular degeneration (AMD) is a prevalent multifactorial disorder of the central retina1, 2, 3. Genetic variants at two chromosomal loci, 1q31 and 10q26, confer major disease risks, together accounting for more than 50% of AMD pathology4, 5, 6, 7, 8, 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 findings12, 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.
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