Cardiac pathology exceeds skeletal muscle pathology in two cases of limb-girdle muscular dystrophy type 2I

Muscle Nerve. 2009 Nov;40(5):883-9. doi: 10.1002/mus.21432.


Limb-girdle muscular dystrophy type 2I (LGMD-2I) is caused by mutations in the fukutin-related protein gene (FKRP) that lead to abnormal glycosylation of alpha-dystroglycan in skeletal muscle. Heart involvement in LGMD-2I is common, but little is known about a underlying cardiac pathology. Herein we describe two patients with LGMD-2I (homozygous FKRP mutation c.826C>A, p.Leu276Ile) who developed severe congestive heart failure that required cardiac transplantation. The dystrophic pathology and impairment of alpha-dystroglycan glycosylation were severe in the heart but mild in skeletal muscle, underscoring the lack of correlation between cardiac and skeletal muscle involvement in some LGMD-2I patients.

Publication types

  • Case Reports
  • Research Support, N.I.H., Extramural

MeSH terms

  • Adolescent
  • Child
  • Female
  • Heart Failure / pathology*
  • Humans
  • Male
  • Muscle, Skeletal / pathology*
  • Muscular Dystrophies, Limb-Girdle / classification
  • Muscular Dystrophies, Limb-Girdle / pathology*