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 language | English |
|---|---|
| Pages (from-to) | 810-816 |
| Number of pages | 7 |
| Journal | Journal of Neurology |
| Volume | 268 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Mar 2021 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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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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