A novel missense mutation in ANO5/TMEM16E is causative for gnathodiaphyseal dyplasia in a large Italian pedigree

Caterina Marconi, Paolo Brunamonti Binello, Giovanni Badiali, Emanuela Caci, Roberto Cusano, Joseph Garibaldi, Tommaso Pippucci, Alberto Merlini, Claudio Marchetti, Kerry J. Rhoden, Luis J V Galietta, Faustina Lalatta, Paolo Balbi, Marco Seri

Research output: Contribution to journalArticlepeer-review

Abstract

Gnathodiaphyseal dysplasia (GDD) is an autosomal dominant syndrome characterized by frequent bone fractures at a young age, bowing of tubular bones and cemento-osseus lesions of the jawbones. Anoctamin 5 (ANO5) belongs to the anoctamin protein family that includes calcium-activated chloride channels. However, recent data together with our own experiments reported here add weight to the hypothesis that ANO5 may not function as calcium-activated chloride channel. By sequencing the entire ANO5 gene coding region and untranslated regions in a large Italian GDD family, we found a novel missense mutation causing the p.Thr513Ile substitution. The mutation segregates with the disease in the family and has never been described in any database as a polymorphism. To date, only two mutations on the same cysteine residue at position 356 of ANO5 amino-acid sequence have been described in GDD families. As ANO5 has also been found to be mutated in two different forms of muscular dystrophy, the finding of this third mutation in GDD adds clues to the role of ANO5 in these disorders.

Original languageEnglish
Pages (from-to)613-619
Number of pages7
JournalEuropean Journal of Human Genetics
Volume21
Issue number6
DOIs
Publication statusPublished - Jun 1 2013

Keywords

  • anoctamin 5
  • calcium-activated chloride channel
  • gnathodiaphyseal dysplasia
  • jawbone disease

ASJC Scopus subject areas

  • Genetics(clinical)
  • Genetics
  • Medicine(all)

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