MYH9 related disease: a novel missense Ala95Asp mutation of the MYH9 gene

Platelets. 2009 Dec;20(8):598-602. doi: 10.3109/09537100903349620.

Abstract

MYH9-related disease (MYH9-RD) is a rare autosomal dominant disorder caused by mutations in MYH9, the gene encoding the heavy chain of non-muscle myosin IIA. Patients present with congenital macrothrombocytopenia and inclusion bodies in neutrophils and might develop sensorineural deafness, presenile cataract, and/or progressive nephritis leading to end-stage renal failure. In a family with eight individuals suffering from macrothrombocytopenia and hearing impairment we identified a novel c.Ala95Asp mutation. Affecting the motor domain of the protein, the mutation is likely to be associated with a severe phenotype. Therefore, this family should be carefully monitored to follow-up the renal status even though the affected members do not seem to be at risk of early kidney disease.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Alanine / genetics
  • Amino Acid Sequence
  • Animals
  • Aspartic Acid / genetics
  • Base Sequence
  • DNA Mutational Analysis
  • Female
  • Humans
  • Male
  • Models, Molecular
  • Molecular Motor Proteins / chemistry
  • Molecular Motor Proteins / genetics*
  • Molecular Sequence Data
  • Mutation, Missense*
  • Myosin Heavy Chains / chemistry
  • Myosin Heavy Chains / genetics*
  • Pedigree
  • Protein Structure, Tertiary
  • Sequence Alignment

Substances

  • MYH9 protein, human
  • Molecular Motor Proteins
  • Aspartic Acid
  • Myosin Heavy Chains
  • Alanine