A NOTCH3 homozygous nonsense mutation in familial Sneddon syndrome with pediatric stroke

  • Elli Katharine Greisenegger
  • , Sara Llufriu
  • , Angel Chamorro
  • , Alvaro Cervera
  • , Adriano Jimenez-Escrig
  • , Klemens Rappersberger
  • , Wolfgang Marik
  • , Stefan Greisenegger
  • , Elisabeth Stögmann
  • , Tamara Kopp
  • , Tim M Strom
  • , Jörg Henes
  • , Anne Joutel
  • , Alexander Zimprich

Research output: Journal article (peer-reviewed)Journal article

Abstract

Sneddon syndrome is a rare disorder affecting small and medium-sized blood vessels that is characterized by the association of livedo reticularis and stroke. We performed whole-exome sequencing (WES) in 2 affected siblings of a consanguineous family with childhood-onset stroke and identified a homozygous nonsense mutation within the epidermal growth factor repeat (EGFr) 19 of NOTCH3, p.(Arg735Ter). WES of 6 additional cases with adult-onset stroke revealed 2 patients carrying heterozygous loss-of-function variants in putative NOTCH3 downstream genes, ANGPTL4, and PALLD. Our findings suggest that impaired NOTCH3 signaling is one underlying disease mechanism and that bi-allelic loss-of-function mutation in NOTCH3 is a cause of familial Sneddon syndrome with pediatric stroke.

Original languageEnglish
Pages (from-to)810-816
Number of pages7
JournalJournal of Neurology
Volume268
Issue number3
DOIs
Publication statusPublished - Mar 2021

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • Adult
  • Child
  • Codon, Nonsense
  • Consanguinity
  • Epidermal Growth Factor
  • Homozygote
  • Humans
  • Mutation
  • Receptor, Notch3/genetics
  • Sneddon Syndrome
  • Stroke/diagnostic imaging

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