Heterozygous APTX mutation associated with atypical multiple system atrophy-like phenotype: A case report

Parkinsonism Relat Disord. 2024 Jun:123:106943. doi: 10.1016/j.parkreldis.2024.106943. Epub 2024 Mar 20.

Abstract

We describe here a 73-year-old patient presenting with atypical MSA-P-like phenotype carrying a monoallelic p. W279X mutation in the APTX gene, which causes ataxia with oculomotor apraxia type 1 (AOA1) when in homozygous state. We hypothesize that rare monoallelic APTX variants could modulate MSA risk and phenotype.

Keywords: APTX; Aprataxin; Multiple system atrophy; Oculomotor apraxia; Parkinsonism.

Publication types

  • Case Reports
  • Letter

MeSH terms

  • Aged
  • Apraxias / congenital
  • Apraxias / genetics
  • Cogan Syndrome / genetics
  • DNA-Binding Proteins / genetics
  • Heterozygote
  • Humans
  • Male
  • Multiple System Atrophy* / genetics
  • Mutation
  • Phenotype*

Substances

  • DNA-Binding Proteins

Supplementary concepts

  • Apraxia, oculomotor, Cogan type