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Autosomal recessive postlingual hearing loss (DFNB8): compound heterozygosity for two novel TMPRSS3 mutations in German siblings.

AbstractMutations in the transmembrane protease, serine 3 (TMPRSS3) gene, encoding a transmembrane serine protease, cause autosomal recessive deafness childhood (DFNB8) or congenital onset (DFNB10). TMPRSS3 mutations have been mainly identified in patients from Asian and Mediterranean countries and seem to be a rare finding in the Northern European population so far. The identification of two novel pathogenic TMPRSS3 mutations (c.646C-->T - R216C; c.916G-->A - A306T) is described in four affected siblings of German origin with postlingual hearing loss, treated by bilateral cochlear implantation with good results. Although TMPRSS3 mutations are supposed to be a rare cause of autosomal recessive hearing loss, in families with postlingual disease onset TMPRSS3 is the most favourable candidate gene after exclusion of GJB2 mutations.
AuthorsMiriam Elbracht, Jan Senderek, Thomas Eggermann, Christian Thürmer, Jonas Park, Martin Westhofen, Klaus Zerres (Affiliation: Institute of Human Genetics, University Hospital Aachen, Aachen, Germany. mielbracht at ukaachen.de)
JournalJournal of medical genetics (J Med Genet) Vol. 44 Issue 6 Pg. e81 (Jun 2007) ISSN: 1468-6244 England
PMID17551081 (Publication Type: Journal Article)
Chemical References
  • Membrane Proteins
  • Neoplasm Proteins
  • Serine Endopeptidases
  • TMPRSS3 protein, human
Topics
  • Adult
  • Base Sequence
  • Child, Preschool
  • DNA Mutational Analysis
  • European Continental Ancestry Group (genetics)
  • Exons (genetics)
  • Female
  • Genes, Recessive
  • Germany
  • Hearing Loss (genetics)
  • Heterozygote
  • Humans
  • Male
  • Membrane Proteins (genetics)
  • Molecular Sequence Data
  • Mutation (genetics)
  • Neoplasm Proteins (genetics)
  • Pedigree
  • Serine Endopeptidases (genetics)
  • Siblings