0000000000543361

AUTHOR

Blanca Garcia-sandoval

showing 2 related works from this author

Mutation spectrum and clinical investigation of achromatopsia patients with mutations in the GNAT2 gene

2019

Achromatopsia (ACHM) is a hereditary cone photoreceptor disorder characterized by the inability to discriminate colors, nystagmus, photophobia, and low-visual acuity. Six genes have been associated with this rare autosomal recessively inherited disease, including the GNAT2 gene encoding the catalytic α-subunit of the G-protein transducin which is expressed in the cone photoreceptor outer segment. Out of a cohort of 1,116 independent families diagnosed with a primary clinical diagnosis of ACHM, we identified 23 patients with ACHM from 19 independent families with likely causative mutations in GNAT2, representing 1.7% of our large ACHM cohort. In total 22 different potentially disease-causing…

AdultMaleAchromatopsiagenetic structuresAdolescentChild preschoolDNA Copy Number VariationsColor Vision DefectsBiologymedicine.disease_causeHeterotrimeric GTP-Binding Proteins/genetics03 medical and health sciencesExonGene duplicationGeneticsmedicineHumansGenetic Predisposition to DiseaseCopy-number variationColor Vision Defects/geneticsChildGenetics (clinical)030304 developmental biologyAgedGenetics0303 health sciencesGNAT2MutationSettore MED/30 - Malattie Apparato Visivo030305 genetics & heredityBreakpointInfantSequence Analysis DNAExonsMiddle Agedmedicine.diseaseHeterotrimeric GTP-Binding ProteinsPhotoreceptor outer segmenteye diseasesPedigreeSettore BIO/18 - GeneticaSequence Analysis DNA/methodsyoung adultFemalesense organsachromatopsia copy number variations GNAT2 mutations transducinmutation
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Detection of a novel Cys628STOP mutation of the myosin VIIA gene in Usher syndrome type Ib.

1998

A Spanish family with three Usher I syndrome-affected members was linked to markers located on chromosome 11q. A search for mutations on the myosin VIIA gene revealed a novel mutation (Cys628STOP) on exon 16 segregating with the disorder in a homozygous state. This nonsense mutation could be responsible for the disease since it leads to a truncated protein that presumably has no function.

MaleUsher syndromeNonsense mutationDNA Mutational AnalysisGenes RecessiveBiologyDeafnessMyosinsPolymerase Chain ReactionExonotorhinolaryngologic diseasesmedicineHumansCysteineMolecular BiologyGenePolymorphism Single-Stranded ConformationalGeneticsMyosin VIIaChromosomeDyneinsCell BiologyDNAExonsSyndromeMiddle Agedmedicine.diseasePedigreeMyosin VIIaMutation (genetic algorithm)MutationCodon TerminatorFemaleNovel mutationRetinitis PigmentosaMolecular and cellular probes
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