alexa Thirty-year follow-up of a patient with leber congenital amaurosis and novel RPE65 mutations.
Biomedical Sciences

Biomedical Sciences

Journal of Bioanalysis & Biomedicine

Author(s): AlKhayer K, Hagstrom S, Pauer G, Zegarra H, Sears J,

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Abstract PURPOSE: To present long-term follow-up on a North American patient with Leber congenital amaurosis (LCA) and novel compound heterozygous mutations in the RPE65 gene. DESIGN: Case report. METHODS: RPE65 mutation screening and search for sequence changes using Single Strand Conformation Polymorphism and direct DNA sequencing. Ophthalmic examination and electrophysiologic testing. RESULTS: A 35-year-old female carried two RPE65 mutations: a maternal 961A>T (K303X) nonsense mutation and a paternal 1346A>G (Y431C) missense mutation. She had severe visual deficits and an absence of rod and cone Electroretinogram responses. Visual acuity of 20/60 both eyes and normal color recognition during early childhood declined to 2/200 in the right eye and 1/200 in the left eye at the age of 35. CONCLUSIONS: The RPE65 mutations K303X and Y431C in compound heterozygous form cause progressive visual compromise that starts in childhood and advances to severe visual loss by the fourth decade of life. This article was published in Am J Ophthalmol and referenced in Journal of Bioanalysis & Biomedicine

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