RGD Reference Report - A frame shift mutation in a tissue-specific alternatively spliced exon of collagen 2A1 in Wagner's vitreoretinal degeneration. - Rat Genome Database

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A frame shift mutation in a tissue-specific alternatively spliced exon of collagen 2A1 in Wagner's vitreoretinal degeneration.

Authors: Gupta, SK  Leonard, BC  Damji, KF  Bulman, DE 
Citation: Gupta SK, etal., Am J Ophthalmol. 2002 Feb;133(2):203-10.
RGD ID: 8657385
Pubmed: PMID:11812423   (View Abstract at PubMed)

PURPOSE: To describe the genetic basis of an autosomal dominant vitreoretinopathy in a large French-Canadian kindred. METHODS: A clinical cohort study followed by laboratory-based genetic and molecular analysis. Thirty-two affected and 22 unaffected members of the kindred were examined. Candidate genes/regions for Wagner's disease and Stickler syndrome were tested for genetic linkage. Mutation analysis was carried out with direct PCR-based sequencing. RESULTS: Funduscopic examinations of 32 affected patients revealed optically clear vitreous, vitreous veils, and radial perivascular pigmentation. Spondyloarthropathies or craniofacial abnormalities were notably absent. There was a 53% rate of retinal detachments that required surgical intervention. Genetic linkage was obtained to COL2A1, the candidate gene for Stickler's type I. A frame shift mutation in exon 2, leading to early truncation of the protein (Cys57Stop), was detected. CONCLUSIONS: Wagner's disease in this large kindred has had devastating visual consequences. In affected individuals, we found a novel COL2A1 frame shift mutation in exon 2. The mutation arises in an exon that is selectively present in vitreous collagen mRNAs, but absent in cartilage mRNAs through tissue-specific alternative splicing. Tissue-specific alternative splicing of COL2A1 mRNAs thus provides an elegant biochemical mechanism for a clinical phenotype of Wagner's disease in this kindred.



RGD Manual Disease Annotations    Click to see Annotation Detail View

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
COL2A1HumanHyaloideoretinal Degeneration of Wagner  IAGP DNA:frameshift mutation:exon:p.C57X (human)RGD 
Col2a1RatHyaloideoretinal Degeneration of Wagner  ISOCOL2A1 (Homo sapiens)DNA:frameshift mutation:exon:p.C57X (human)RGD 
Col2a1MouseHyaloideoretinal Degeneration of Wagner  ISOCOL2A1 (Homo sapiens)DNA:frameshift mutation:exon:p.C57X (human)RGD 

Phenotype Annotations    Click to see Annotation Detail View

Manual Human Phenotype Annotations - RGD

Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
COL2A1HumanAbnormal retinal morphology  IAGP DNA:frameshift mutation:exon:p.C57XRGD 
Objects Annotated

Genes (Rattus norvegicus)
Col2a1  (collagen type II alpha 1 chain)

Genes (Mus musculus)
Col2a1  (collagen, type II, alpha 1)

Genes (Homo sapiens)
COL2A1  (collagen type II alpha 1 chain)


Additional Information