Nat Genet. 2011 Dec 11;44(1):85-8. doi: 10.1038/ng.1016.

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

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 JL, Munnich A, Cormier-Daire V.

Source

Département de Génétique, Unité INSERM U781, Université Paris Descartes, Sorbonne Paris Cité, Hôpital Necker Enfants Malades, Paris, France.

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.

Comment in

A common tool for rare diseases. [Clin Genet. 2012]
A common tool for rare diseases.Huang K. Clin Genet. 2012 May; 81(5):432. Epub 2012 Mar 21.

PMID:: 22158539; [PubMed - indexed for MEDLINE]

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Research Support, Non-U.S. Gov't

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Growth mental deficiency syndrome of Myhre

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Mutations at a single codon in Mad homology 2 domain of SMAD4 cause Myhre syndro...
Mutations at a single codon in Mad homology 2 domain of SMAD4 cause Myhre syndrome.
Nat Genet. 2011 Dec 11 ;44(1):85-8. doi: 10.1038/ng.1016.

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