VCP myopathy: A family with unusual clinical manifestations

Muscle Nerve. 2019 Mar;59(3):365-369. doi: 10.1002/mus.26389. Epub 2019 Jan 18.

Abstract

Introduction: Valosin-containing protein (VCP) variants that affect muscle, bone, and the nervous system are termed multisystem proteinopathy. VCP myopathy is manifested as limb-girdle weakness, distal weakness and scapuloperoneal weakness.

Methods: We reviewed clinical, genetic, and muscle biopsy data from 6 members of a family with VCP myopathy.

Results: Clinical features of family members were complex and included dementia, myopathy, and hearing impairment. Ophthalmoplegia, ptosis, and dysphagia were present in 3 siblings. Rimmed vacuoles were observed in muscle biopsies, consistent with the pathological changes of VCP myopathy. A heterozygous VCP c.463C>A (p.R155S) that segregated in an autosomal-dominant pattern was identified by genetic analysis.

Conclusions: VCP myopathy can cause unusual manifestations that include ophthalmoplegia, ptosis, and dysphagia. This study increased our understanding of the clinical manifestations of VCP myopathy. Muscle Nerve 59:365-369, 2019.

Keywords: VCP myopathy; distal weakness; dysphagia; ophthalmoplegia; ptosis.

MeSH terms

  • Adolescent
  • Adult
  • Age of Onset
  • Biopsy
  • Blepharoptosis / etiology
  • Blepharoptosis / genetics
  • Child
  • Deglutition Disorders / etiology
  • Deglutition Disorders / genetics
  • Electromyography
  • Family
  • Female
  • Humans
  • Male
  • Muscle, Skeletal / pathology
  • Muscular Diseases / genetics*
  • Muscular Diseases / pathology
  • Mutation
  • Mutation, Missense
  • Ophthalmoplegia / etiology
  • Ophthalmoplegia / genetics
  • Pedigree
  • Valosin Containing Protein / genetics*

Substances

  • VCP protein, human
  • Valosin Containing Protein