Laminopathies in Russian families

Clin Genet. 2008 Aug;74(2):127-33. doi: 10.1111/j.1399-0004.2008.01045.x. Epub 2008 Jun 28.

Abstract

Mutations in LMNA gene produce a wide spectrum of disorders called laminopathies. In this article, the first cases of laminopathies from Russia are reported. In 10 unrelated families, 9 different mutations were identified: Asp47His, Gly232Arg, c.[781_783delAAG, 781insGTGGAGCAGTATAAGAAA], Arg249Gln (in two families), Arg377His, Arg541His, Ala350Pro, Leu52Pro, and Gly635Asp. Mutations Arg249Gln, Arg377His, and Arg541His were reported previously, others are novel. Four cases present de novo mutations, among them two cases with Arg249Gln are found. Because this mutation occurred de novo also in other reported cases, a mutational 'hot spot' was supposed. Three phenotypes were observed: autosomal dominant (AD) Emery-Dreifuss muscular dystrophy (EDMD), limb-girdle MD type 1B, and AD dilated cardiomyopathy with conduction defect type 1A (DCM1A). Atypical clinical presentations were a very severe EDMD and an infantile DCM1A.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cardiomyopathy, Dilated / genetics
  • DNA Mutational Analysis
  • Family Health
  • Genes, Dominant
  • Humans
  • Lamin Type A / genetics*
  • Muscular Dystrophies, Limb-Girdle / genetics
  • Muscular Dystrophy, Emery-Dreifuss / genetics
  • Mutation*
  • Phenotype
  • Russia / epidemiology

Substances

  • LMNA protein, human
  • Lamin Type A