Document Detail


Phenotypic findings in C1QTNF5 retinopathy (late-onset retinal degeneration).
MedLine Citation:
PMID:  23289492     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Purpose:  To describe the ocular and electrophysiological phenotype of four patients with late-onset retinal degeneration (LORD). Methods:  Clinical examination, fundus and anterior segment photography, fundus autofluorescence imaging and spectral domain optical coherence tomography (SD-OCT) were performed. Three patients underwent pattern and full-field electroretinography (ERG). Patient DNA was screened for the c.686C>G, p.Ser163Arg mutation in C1QTNF5. Results:  All affected individuals had a family history suggestive of autosomal dominant inheritance with full penetrance. Molecular analysis identified a heterozygous c.686C>G, p.Ser163Arg mutation in C1QTNF5 in DNA from all four affected probands. All four patients presented in their 50s with nyctalopia and developed central visual loss in their 60s. Peripupillary iris atrophy and long anterior zonular insertions were present in three of four patients. Dilated fundus examination revealed scalloped areas of retinal pigment epithelium (RPE) atrophy in the mid-periphery and widespread atrophy in the posterior pole. Full-field ERGs were consistent with rod-cone dystrophy with pattern ERG evidence of severe macular involvement. SD-OCT revealed widespread loss of the photoreceptors with absence of the inner/outer segment junction line and concurrent thinning of the outer nuclear layer. Diffuse choroidal thinning, mainly affecting the inner choroid with loss of the choriocapillaris, was observed. Conclusion:  C1QTNF5 retinopathy is an autosomal dominant LORD resulting in a complex ocular phenotype involving the RPE and ciliary epithelium. SD-OCT findings revealed widespread photoreceptor loss and diffuse choroidal thinning.
Authors:
Vasileios Soumplis; Panagiotis I Sergouniotis; Anthony G Robson; Michel Michaelides; Anthony T Moore; Graham E Holder; Andrew R Webster
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-7
Journal Detail:
Title:  Acta ophthalmologica     Volume:  -     ISSN:  1755-3768     ISO Abbreviation:  Acta Ophthalmol     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101468102     Medline TA:  Acta Ophthalmol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2013 The Authors Acta Ophthalmologica © 2013 Acta Ophthalmologica Scandinavica Foundation.
Affiliation:
Moorfields Eye Hospital, London, UK UCL Institute of Ophthalmology, London, UK.
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