M N Preising1, K Paunescu, C Friedburg, B Lorenz. 1. Abt. für Kinderophthalmologie, Strabismologie und Ophthalmogenetik, Klinikum der Universität Regensburg, 93042, Regensburg.
Abstract
BACKGROUND: Leber congenital amaurosis (LCA) usually describes patients with severely reduced vision due to a retinal dystrophy in early childhood. METHODS: In 135 families in a case series with severely reduced vision due to a retinal dystrophy in early childhood a complete ophthalmologic examination was extended by two-color threshold perimetry, fundus autofluorescence (FAF), und optical coherence tomography (OCT). Mutation screening included AIPL1, CRB1, CRX, GUCY2D, LRAT, RPE65, RPGRIP, and TULP1. RESULTS: GUCY2D mutations caused the most severe phenotype with severely reduced vision from birth but unremarkable fundus appearance. RPE65 mutations were correlated with an obvious lack of FAF. CRB1 mutations showed a significantly thickened retina on OCT. CRX mutations were associated with a progressive form of cone-rod dystrophy. CONCLUSION: A genotype-phenotype correlation for selected genes allows an optimized strategy for the molecular genetic work-up.
BACKGROUND:Leber congenital amaurosis (LCA) usually describes patients with severely reduced vision due to a retinal dystrophy in early childhood. METHODS: In 135 families in a case series with severely reduced vision due to a retinal dystrophy in early childhood a complete ophthalmologic examination was extended by two-color threshold perimetry, fundus autofluorescence (FAF), und optical coherence tomography (OCT). Mutation screening included AIPL1, CRB1, CRX, GUCY2D, LRAT, RPE65, RPGRIP, and TULP1. RESULTS:GUCY2D mutations caused the most severe phenotype with severely reduced vision from birth but unremarkable fundus appearance. RPE65 mutations were correlated with an obvious lack of FAF. CRB1 mutations showed a significantly thickened retina on OCT. CRX mutations were associated with a progressive form of cone-rod dystrophy. CONCLUSION: A genotype-phenotype correlation for selected genes allows an optimized strategy for the molecular genetic work-up.
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