Spectrum of rhodopsin mutations in French autosomal dominant rod-cone dystrophy patients. 2010

Isabelle Audo, and Gaël Manes, and Saddek Mohand-Saïd, and Anne Friedrich, and Marie-Elise Lancelot, and Aline Antonio, and Veselina Moskova-Doumanova, and Oliver Poch, and Xavier Zanlonghi, and Christian P Hamel, and José-Alain Sahel, and Shomi S Bhattacharya, and Christina Zeitz
INSERM, U968, Paris, France.

PURPOSE. To identify the prevalence of rhodopsin (RHO) mutations in French patients with autosomal dominant rod-cone dystrophies (adRPs). Methods. Detailed phenotypic characterization was performed, including precise family history, best corrected visual acuity with the ETDRS chart, slit lamp examination, kinetic and static perimetry, full-field and multifocal electroretinography (ERG), fundus autofluorescence imaging (FAF), and optical coherence tomography (OCT). For genetic diagnosis, genomic DNA of 79 families was isolated by standard METHODS The coding exons and flanking intronic regions of RHO were PCR amplified, purified, and sequenced in the index patient. RESULTS. Of this French adRP sample, 16.5% carried an RHO mutation. Three different families showed a novel mutation (p. Leu88Pro, p.Met207Lys and p.Gln344Pro), while ten unrelated families showed recurrent, previously published mutations (p.Asn15Ser, p.Leu131Pro, p.Arg135Trp, p.Ser334GlyfsX21 and p.Pro347Leu). All mutations co-segregated with the phenotype within a family, and the novel mutations were not identified in control samples. CONCLUSIONS. This study revealed that the prevalence of RHO mutations in French adRP patients is in accordance with that in other studies from Europe. Most of the changes identified herein reflect recurrent mutations, within which p.Pro347Leu substitution is the most prevalent. Nevertheless, almost one fourth of the changes are novel, indicating that, although RHO is the first gene implicated and probably the most studied gene in RP, it is still important performing mutation analysis in RHO to detect novel changes. The detailed phenotype-genotype analyses in all available family members deliver the basis for therapeutic approaches in those families.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D010375 Pedigree The record of descent or ancestry, particularly of a particular condition or trait, indicating individual family members, their relationships, and their status with respect to the trait or condition. Family Tree,Genealogical Tree,Genealogic Tree,Genetic Identity,Identity, Genetic,Family Trees,Genealogic Trees,Genealogical Trees,Genetic Identities,Identities, Genetic,Tree, Family,Tree, Genealogic,Tree, Genealogical,Trees, Family,Trees, Genealogic,Trees, Genealogical
D010641 Phenotype The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment. Phenotypes
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D004252 DNA Mutational Analysis Biochemical identification of mutational changes in a nucleotide sequence. Mutational Analysis, DNA,Analysis, DNA Mutational,Analyses, DNA Mutational,DNA Mutational Analyses,Mutational Analyses, DNA
D004596 Electroretinography Recording of electric potentials in the retina after stimulation by light. Electroretinographies
D005260 Female Females
D005451 Fluorescein Angiography Visualization of a vascular system after intravenous injection of a fluorescein solution. The images may be photographed or televised. It is used especially in studying the retinal and uveal vasculature. Fluorescence Angiography,Fundus Fluorescence Photography,Angiography, Fluorescein,Angiography, Fluorescence,Fluorescence Photography, Fundus,Photography, Fundus Fluorescence

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