Mutations at a single codon in Mad homology 2 domain of SMAD4 cause Myhre syndrome

Carine Le Goff, Clémentine Mahaut, Avinash Abhyankar, Wilfried Le Goff, Valérie Serre, Alexandra Afenjar, Anne Destrée, Maja Di Rocco, Delphine Héron, Sébastien Jacquemont, Sandrine Marlin, Marleen Simon, John Tolmie, Alain Verloes, Jean Laurent Casanova, Arnold Munnich, Valérie Cormier-Daire

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Abstract

Myhre syndrome (MIM 139210) is a developmental disorder characterized by short stature, short hands and feet, facial dysmorphism, muscular hypertrophy, deafness and cognitive delay. Using exome sequencing of individuals with Myhre syndrome, we identified SMAD4 as a candidate gene that contributes to this syndrome on the basis of its pivotal role in the bone morphogenetic pathway (BMP) and transforming growth factor (TGF)-β signaling. We identified three distinct heterozygous missense SMAD4 mutations affecting the codon for Ile500 in 11 individuals with Myhre syndrome. All three mutations are located in the region of SMAD4 encoding the Mad homology 2 (MH2) domain near the site of monoubiquitination at Lys519, and we found a defect in SMAD4 ubiquitination in fibroblasts from affected individuals. We also observed decreased expression of downstream TGF-β target genes, supporting the idea of impaired TGF-β-mediated transcriptional control in individuals with Myhre syndrome.

Original languageEnglish
Pages (from-to)85-88
Number of pages4
JournalNature Genetics
Volume44
Issue number1
DOIs
Publication statusPublished - Jan 2012

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ASJC Scopus subject areas

  • Genetics

Cite this

Le Goff, C., Mahaut, C., Abhyankar, A., Le Goff, W., Serre, V., Afenjar, A., Destrée, A., Di Rocco, M., Héron, D., Jacquemont, S., Marlin, S., Simon, M., Tolmie, J., Verloes, A., Casanova, J. L., Munnich, A., & Cormier-Daire, V. (2012). Mutations at a single codon in Mad homology 2 domain of SMAD4 cause Myhre syndrome. Nature Genetics, 44(1), 85-88. https://doi.org/10.1038/ng.1016