6533b85afe1ef96bd12b985f
RESEARCH PRODUCT
A novel DFNB1 deletion allele supports the existence of a distant cis-regulatory region that controls GJB2 and GJB6 expression
C Le MarechalR BirkenhägerJill L. ElfenbeinRachel FisherS M Da Silva-costaArti PandyaEdi Lúcia SartoratoKaren H. FridericiH BolzEberhard SchneiderG. Van CampRichard J.h. SmithChristian KubischHela AzaiezEllen WilchHannie KremerAlessandra MurgiaThomas HaafL. H. HoefslootI Del CastilloWim Wuytssubject
MaleGenetics and epigenetic pathways of disease [NCMLS 6][SDV]Life Sciences [q-bio]PenetranceMESH: Base SequenceRegulatory Sequences Nucleic Acidsensorineural hearing lossConnexinsMESH: GenotypeMESH: Hearing Loss Sensorineural/diagnosisMESH: PenetranceGenotypeCopy-number variationGenetics (clinical)Sequence DeletionGeneticsComparative Genomic Hybridization0303 health sciencesMESH: Genetic TestingMESH: Gene Expression Regulation*030305 genetics & heredityPenetranceGJB2PedigreeConnexin 26MESH: Sequence Deletion*MESH: Hearing Loss Sensorineural/geneticsFemaleChromosome DeletionFunctional Neurogenomics [DCN 2]GJB6GenotypeMESH: PedigreeMESH: Chromosome DeletionHearing Loss SensorineuralMolecular Sequence Dataconnexin 26connexin 30DFNB1gene expression regulationGJB2GJB6sensorineural hearing losssequence deletionBiologyMESH: Connexin 30MESH: Connexins/genetics*MESH: Sequence Homology Nucleic AcidArticleGenomic disorders and inherited multi-system disorders [IGMD 3]03 medical and health sciencesMonoallelic MutationGJB6MESH: Connexin 26Sequence Homology Nucleic AcidConnexin 30otorhinolaryngologic diseasesGeneticsHumansGenetic TestingAlleleGeneMESH: Regulatory Sequences Nucleic Acid/genetics*AllelesDFNB1030304 developmental biologyFamily HealthMESH: HumansMESH: Molecular Sequence DataBase SequenceChromosomes Human Pair 13MESH: AllelesBreakpointMESH: MaleMESH: Comparative Genomic HybridizationGene Expression RegulationMESH: Family Healthbiology.proteinHuman medicineMESH: Chromosomes Human Pair 13/geneticsMESH: Femaledescription
Contains fulltext : 87760_1.pdf (author's version ) (Open Access) Contains fulltext : 87760_2.pdf (Publisher’s version ) (Closed access) Eleven affected members of a large German-American family segregating recessively inherited, congenital, non-syndromic sensorineural hearing loss (SNHL) were found to be homozygous for the common 35delG mutation of GJB2, the gene encoding the gap junction protein Connexin 26. Surprisingly, four additional family members with bilateral profound SNHL carried only a single 35delG mutation. Previously, we demonstrated reduced expression of both GJB2 and GJB6 mRNA from the allele carried in trans with that bearing the 35delG mutation in these four persons. Using array comparative genome hybridization (array CGH), we have now identified on this allele a deletion of 131.4 kb whose proximal breakpoint lies more than 100 kb upstream of the transcriptional start sites of GJB2 and GJB6. This deletion, del(chr13:19,837,344-19,968,698), segregates as a completely penetrant DFNB1 allele in this family. It is not present in 528 persons with SNHL and monoallelic mutation of GJB2 or GJB6, and we have not identified any other candidate pathogenic copy number variation by arrayCGH in a subset of 10 such persons. Characterization of distant GJB2/GJB6 cis-regulatory regions evidenced by this allele may be required to find the 'missing' DFNB1 mutations that are believed to exist. 01 september 2010
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-08-31 | Clinical Genetics |