Investigative ophthalmology & visual science · 2004
Spectrum and frequency of FZD4 mutations in familial exudative vitreoretinopathy.
Сравнительное исследованиеСтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Toomes Carmel, Bottomley Helen M, Scott Sheila, Mackey David A, Craig Jamie E, Appukuttan Binoy, Stout J Timothy, Flaxel Christina J, Zhang Kang, Black Graeme C M, Fryer Alan, Downey Louise M, Inglehearn Chris F
Аннотация
PURPOSE: Mutations in the frizzled-4 gene (FZD4) have recently been associated with autosomal dominant familial exudative vitreoretinopathy (FEVR) in families linking to the EVR1 locus on the long arm of chromosome 11. The purpose of this study was to screen FZD4 in a panel of 40 patients with FEVR to identify the types and location of mutations and to calculate what proportion of this heterogeneous condition is attributable to FZD4 mutations.
METHODS: PCR products were generated from genomic DNA with primers designed to amplify the coding sequence of FZD4. The PCR products were screened for mutations by single-strand conformational polymorphism-heteroduplex analysis (SSCP-HA) and by direct sequencing.
RESULTS: In total, eight mutations were identified, seven of which were novel. Three were deletions (c957delG, c1498delA, and c1501-1502delCT), one was a nonsense mutation (Q505X), and four were missense mutations (G36D, M105T, M157V, and S497F).
CONCLUSIONS: Eight mutations have been identified in the FZD4 gene in a cohort of 40 unrelated patients with FEVR. This result indicates that FZD4 mutations are responsible for only 20% of FEVR index cases and suggests that the other FEVR loci may account for more cases than previously anticipated.
METHODS: PCR products were generated from genomic DNA with primers designed to amplify the coding sequence of FZD4. The PCR products were screened for mutations by single-strand conformational polymorphism-heteroduplex analysis (SSCP-HA) and by direct sequencing.
RESULTS: In total, eight mutations were identified, seven of which were novel. Three were deletions (c957delG, c1498delA, and c1501-1502delCT), one was a nonsense mutation (Q505X), and four were missense mutations (G36D, M105T, M157V, and S497F).
CONCLUSIONS: Eight mutations have been identified in the FZD4 gene in a cohort of 40 unrelated patients with FEVR. This result indicates that FZD4 mutations are responsible for only 20% of FEVR index cases and suggests that the other FEVR loci may account for more cases than previously anticipated.
Предметные рубрики MeSH
AdultAmino Acid SequenceChromosomes, Human, Pair 11DNA Mutational AnalysisDNA PrimersExudates and TransudatesFemaleFrizzled ReceptorsGene FrequencyHeteroduplex AnalysisHumansInfant, NewbornMaleMolecular Sequence DataMutationPedigreePolymerase Chain ReactionPolymorphism, Single-Stranded ConformationalProteinsReceptors, Cell SurfaceReceptors, G-Protein-CoupledVitreoretinopathy, Proliferative