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Recessive NUP54 Variants Underlie Early-Onset Dystonia with Striatal Lesions

  • Philip Harrer
  • , Audrey Schalk
  • , Masaru Shimura
  • , Sarah Baer
  • , Nadège Calmels
  • , Marie Aude Spitz
  • , Marie Thérèse Abi Warde
  • , Elise Schaefer
  • , Volker M.Sc Kittke
  • , Yasemin Dincer
  • , Matias Wagner
  • , Ivana Dzinovic
  • , Riccardo Berutti
  • , Tatsuharu Sato
  • , Toshihiko Shirakawa
  • , Yasushi Okazaki
  • , Kei Murayama
  • , Konrad Oexle
  • , Holger Prokisch
  • , Volker Mall
  • Ivo Melčák, Juliane Winkelmann, Michael Zech
  • Helmholtz Zentrum München German Research Center for Environmental Health
  • Technical University of Munich
  • Hôpitaux Universitaires de Strasbourg
  • Chiba Children's Hospital
  • Institute for Genetics and Molecular and Cellular Biology (IGBMC)
  • Laboratoire de Génétique Médicale
  • Zentrum für Humangenetik und Laboratoriumsdiagnostik (MVZ)
  • Nagasaki University Hospital
  • Juntendo University Graduate School of Medicine
  • kbo-Kinderzentrum München
  • Emory University School of Medicine
  • Munich Cluster for Systems Neurology (SyNergy)

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Infantile striatonigral degeneration is caused by a homozygous variant of the nuclear-pore complex (NPC) gene NUP62, involved in nucleo-cytoplasmic trafficking. By querying sequencing-datasets of patients with dystonia and/or Leigh(-like) syndromes, we identified 3 unrelated individuals with biallelic variants in NUP54. All variants clustered in the C-terminal protein region that interacts with NUP62. Associated phenotypes were similar to those of NUP62-related disease, including early-onset dystonia with dysphagia, choreoathetosis, and T2-hyperintense lesions in striatum. In silico and protein-biochemical studies gave further evidence for the argument that the variants were pathogenic. We expand the spectrum of NPC component-associated dystonic conditions with localized basal-ganglia abnormalities. ANN NEUROL 2023;93:330–335.

Original languageEnglish
Pages (from-to)330-335
Number of pages6
JournalAnnals of Neurology
Volume93
Issue number2
DOIs
StatePublished - Feb 2023

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