A novel homozygous FBXO38 variant causes an early-onset distal hereditary motor neuronopathy type IID.

Akcimen F., Vural A., Durmus H., Cakar A., Houlden H., Parman Y. G., ...More

Journal of human genetics, vol.64, no.11, pp.1141-1144, 2019 (SCI-Expanded, Scopus) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 64 Issue: 11
  • Publication Date: 2019
  • Doi Number: 10.1038/s10038-019-0652-y
  • Journal Name: Journal of human genetics
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1141-1144
  • Istanbul University Affiliated: Yes

Abstract

Distal hereditary motor neuronopathies (dHMN) are a genetically heterogeneous group of neuromuscular disorders caused by anterior horn cell degeneration and progressive distal muscle weakness. A heterozygous missense variant in FBXO38 has been previously described in two families affected by autosomal-dominant dHMN. In this paper, we describe a homozygous missense variant in FBXO38 (c.1577G>A; p.(Arg526Gln)) in a young Turkish female, offspring of consanguineous parents, with a congenital mild neuronopathy with idiopathic toe walking, normal sensory examination, and hearing loss. This work is the first to describe a novel homozygous variant and a suggested loss of function mechanism in FBXO38, expanding the dHMN type IID phenotype.