Discordant Phenotypes in Fraternal Twins Having an Identical Mutation in Exon ORF15 of the RPGR Gene
نویسندگان
چکیده
منابع مشابه
Discordant phenotypes in fraternal twins having an identical mutation in exon ORF15 of the RPGR gene.
OBJECTIVE To report discordant phenotypes, resulting from the same mutation in exon ORF15 (GenBank AF286472) of the retinitis pigmentosa GTPase regulator gene (RPGR) (GenBank U57629), in 2 presumed dizygotic twin brothers with X-linked retinal disease. METHODS The 2 brothers underwent complete ophthalmic examination that included best-corrected visual acuity, slitlamp biomicroscopy, and detai...
متن کاملIdentification of a novel RPGR exon ORF15 mutation in a family with X-linked retinitis pigmentosa.
OBJECTIVE To investigate the phenotypic and genotypic characteristics of a novel mutation associated with X-linked retinitis pigmentosa (XLRP). METHODS Six individuals in a family with XLRP were recruited, and clinical examinations were performed. All of the members were genotyped with microsatellite markers at loci that were considered to be associated with XLRP. The retinitis pigmentosa GTP...
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Mutations in the WT1 gene, leading to Denys-Drash syndrome and Frasier syndrome, can also cause isolated steroid-resistant nephrotic syndrome (ISRNS). Previous studies have reported six pairs of monozygotic twins with WT1 mutations, including one presenting with discordant phenotypes with identical WT1 mutations being of paternal origin and five pairs of monozygotic twins presenting the same ph...
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PURPOSE To describe the genotype-phenotype correlation and serial observations in a five-generation Czech family with X-linked retinitis pigmentosa (XLRP) associated with severe visual impairment in women. METHODS Comprehensive ophthalmological examination including spectral domain optical coherence tomography (SD-OCT) was performed. Based on the pedigree structure and women being severely af...
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A chromosomal abnormality in one of the fetuses of a monozygotic twin pregnancy is a rare phenomenon. In the prenatal unit of our cytogenetics laboratory we have recently come across two such heterokaryotypic twin pregnancies. In both cases ultrasound abnormalities were detected in one fetus of each twin pair. Chromosomal analysis showed that one twin pregnancy was discordant for trisomy 21 and...
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ژورنال
عنوان ژورنال: Archives of Ophthalmology
سال: 2008
ISSN: 0003-9950
DOI: 10.1001/archophthalmol.2007.72