Partial laminin alpha2 chain deficiency in a patient with myopathy resembling inclusion body myositis

Ann Neurol. 2000 Jun;47(6):811-6.

Abstract

It is becoming evident that clinical phenotypes associated with partial laminin alpha2 chain deficiency are variable. We recently observed a 29-year-old man with leukoencephalopathy and vacuolar myopathy resembling inclusion body myositis. Laminin alpha2 immunohistochemical analysis showed reduction of the protein on muscle fiber surfaces. Molecular analysis revealed two novel compound heterozygous mutations in the LAMA2 gene. This is the first report linking a mutation in the LaMA2 gene with leukoencephalopathy and inclusion body-like myositis.

Publication types

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

MeSH terms

  • Adult
  • Amino Acid Sequence
  • Base Sequence
  • Brain Diseases / genetics*
  • Brain Diseases / pathology*
  • Diagnosis, Differential
  • Exons
  • Female
  • Heterozygote
  • Humans
  • Immunohistochemistry
  • Laminin / analysis
  • Laminin / deficiency*
  • Laminin / genetics*
  • Male
  • Muscle Fibers, Skeletal / pathology*
  • Myositis / genetics*
  • Myositis / pathology*
  • Myositis, Inclusion Body / pathology
  • Pedigree
  • Vacuoles / pathology
  • Vacuoles / ultrastructure

Substances

  • Laminin
  • laminin alpha 2