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Splice site mutation in the peripherin/RDS gene associated with pattern dystrophy of the retina.

Abstract：

PURPOSE:To report the phenotype and genotype of a splice site mutation at intron 2 of the peripherin/RDS gene in four half-siblings with pattern dystrophy of the retina. DESIGN:Experimental study. METHODS:In four siblings with a common mother and three separate fathers, complete ophthalmic examination, pedigree, electrophysiologic testing, and fluorescein angiography studies were obtained. Genomic DNA from serum lymphocytes was isolated and used as a template for primers specific for the cone homeobox gene (CRX), rhodopsin (RHO), and peripherin/RDS genes to conduct single stranded conformational analysis and cycle sequencing. RESULTS:The pedigree of four affected siblings suggested probable autosomal dominance transmission of pattern dystrophy. In the four siblings, best corrected visual acuity ranged from 20/20 to 20/80 by Snellen chart. Clinical findings included discrete, localized degenerative changes of the macular retinal pigment epithelium in all patients, with subclassification foveal. One patient exhibited pigment clumping within the atrophic areas. Another patient exhibited yellow flecks diffusely in the macula. Fluorescein angiographic findings included central hypofluorescence with a surrounding rim of hyperfluorescence that corresponded to the observed fundus lesions and window defects. There was a range of electroretinography (ERG) and electrooculography (EOG) findings. One patient demonstrated both cone and rod dysfunction on ERG testing and another demonstrated decreased rod function. EOG testing was normal in two patients and mildly diminished in one patient. DNA sequencing identified a point mutation in intron 2 of the peripherin/RDS gene, consisting of an A to T change at 1068+3, present in all four affected patients. CONCLUSIONS:Four siblings with pattern dystrophy of the retina presented a splice site mutation in the peripherin/RDS gene.

journal_name

Am J Ophthalmol

journal_title

American journal of ophthalmology

authors

Sears JE,Aaberg TA Sr,Daiger SP,Moshfeghi DM

doi

10.1016/s0002-9394(01)01179-5

subject

Has Abstract

pub_date

2001-11-01 00:00:00

pages

693-9

issue

eissn

0002-9394

issn

1879-1891

pii

S0002939401011795

journal_volume

132

pub_type

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Splice site mutation in the peripherin/RDS gene associated with pattern dystrophy of the retina.