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Missense variations in the fibulin 5 gene and age-related macular degeneration

Record type: Article

Background: Age-related macular degeneration (AMD) is the most common cause of irreversible vision loss in the developed world. The study of a rare mendelian form of macular degeneration implicated fibulin genes in the pathogenesis of more common forms of this disease. We evaluated five fibulin genes in a large series of patients with AMD.
Methods: We studied 402 patients with AMD and 429 control subjects from the same clinic population. Patients were examined by means of indirect ophthalmoscopy, slit-lamp microscopy, and fundus photography to establish the presence and phenotypic pattern of AMD. DNA samples were screened for sequence variations in five members of the fibulin gene family.
Results: Amino acid-altering sequence variations were found in all five fibulin genes, many of which were observed only in patients with AMD. Several of the altered residues have been conserved during evolution. Seven of the 402 patients with AMD had amino acid-altering sequence variations in the fibulin 5 gene, whereas none were observed among 429 control subjects (P<0.01). In addition, these seven patients all had small, circular drusen, which are commonly referred to as basal laminar or cuticular drusen.
Conclusions: Missense mutations in the fibulin 5 gene were found in 1.7 percent of patients with AMD. Many variations in other fibulin genes were also found in these patients, and the evolutionary conservation of the affected residues suggests that several of these variations may also be involved in AMD.

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Citation

Stone, Edwin M., Braun, Terry A., Russell, Stephen R., Kuehn, Markus H., Lotery, Andrew J., Moore, Paula A., Eastman, Christopher G., Casavant, Thomas L. and Sheffield, Val C. (2004) Missense variations in the fibulin 5 gene and age-related macular degeneration New England Journal of Medicine, 351, (4), pp. 346-353. (doi:10.1056/NEJMoa040833).

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Published date: July 2004

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Local EPrints ID: 24967
URI: http://eprints.soton.ac.uk/id/eprint/24967
PURE UUID: 2f444f6a-ecea-4ebd-8d91-7808e2f2a19e

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Date deposited: 06 Apr 2006
Last modified: 17 Jul 2017 16:12

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Contributors

Author: Edwin M. Stone
Author: Terry A. Braun
Author: Stephen R. Russell
Author: Markus H. Kuehn
Author: Paula A. Moore
Author: Christopher G. Eastman
Author: Thomas L. Casavant
Author: Val C. Sheffield

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