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Age-related macular degeneration in grandparents of patients with Stargardt disease: genetic study



Age-related macular degeneration in grandparents of patients with Stargardt disease: genetic study



American Journal of Ophthalmology 128(2): 173-178



PURPOSE: To report clinical features and molecular genetic study in three unrelated families in which age-related macular degeneration was observed in grandparents of patients with Stargardt disease. METHODS: A complete ophthalmologic examination including best-corrected visual acuity measurement, fundus examination, and fluorescein angiography was performed on all members of the three families. The entire coding sequence of the ABCR gene was analyzed using a combination of single strand conformation polymorphism and direct sequence analysis of the 50 exons. RESULTS: Compound heterozygous missense mutations were observed in patients with Stargardt disease (Arg212Cys, Arg1107Cys, Gly1977Ser, Arg2107His, and le2113Met). Heterozygous missense mutations were observed in the grandparents with age-related macular degeneration (Arg212Cys and Arg1107Cys). CONCLUSIONS: We report phenotype and genotype findings in three unrelated families segregating patients with Stargardt disease and age-related macular degeneration. The hypothesis that the Arg212Cys and Arg1107Cys ABCR gene mutations could be susceptibility factors for age-related macular degeneration is discussed. We speculate that the relatives of patients affected with Stargardt disease who are carriers of heterozygous ABCR gene mutations may have a higher risk of developing age-related macular degeneration.

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Accession: 010138763

Download citation: RISBibTeXText

PMID: 10458172

DOI: 10.1016/s0002-9394(99)00145-2


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