Evidence map›Paper›PMID 41947304›Full record

ArticleJournal of the Chinese Medical Association : JCMA2026

An in trans NOTCH3 loss-of-function variant modifies disease severity in CADASIL: A family-based study.

Shih-Chun Lan, Yi-Hong Liu, Jui Lan, Yi-Chu Liao, Min-Yu Lan, Yi-Chung Lee

Abstract read
In one paragraph

Article in Journal of the Chinese Medical Association : JCMA, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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4 · The record

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5 · Who and what money

Authors and funding

6 authors.

Shih-Chun LanDepartment of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
Yi-Hong LiuDepartment of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
Jui LanDepartment of Pathology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan, ROC.
Yi-Chu LiaoDepartment of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
Min-Yu LanDepartment of Neurology and Center for Parkinson's Disease, Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Kaohsiung, Taiwan, ROC.
Yi-Chung LeeDepartment of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.ORCID 0000-0003-0102-164

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is caused by pathogenic NOTCH3 variants, most commonly heterozygous cysteine-altering variants. Disease severity varies widely, and the impact of reduced NOTCH3 dosage on CADASIL severity remains unclear. We describe a family of four individuals carrying a cysteine-altering NOTCH3 variant and/or a frameshift loss-of-function (LoF) variant, demonstrating marked intrafamilial phenotypic heterogeneity.

methodsFour related individuals underwent standardized clinical assessment, brain magnetic resonance imaging (MRI), genetic analysis, skin biopsy, and NOTCH3 complementary DNA (cDNA) sequencing.

resultsThe proband, carrying p.Cys1146Ser and p.Cys1024Valfs248 in trans, developed progressive gait disturbance, dysphagia, and slurred speech beginning in his mid-thirties. Brain MRI demonstrated extensive white matter hyperintensities, multiple lacunar infarcts, and numerous cerebral microbleeds. In contrast, the father (carrying p.Cys1146Ser alone) and the mother and brother (carrying p.Cys1024Valfs248 alone) exhibited milder clinical and imaging phenotypes. Only the carriers of the cysteine-altering variant demonstrated NOTCH3 extracellular domain (NOTCH3 ECD ) immunoreactivity in skin vessels. NOTCH3 cDNA sequencing from the skin tissue demonstrated reduced LoF allele expression.

conclusionReduced NOTCH3 dosage may modify the disease severity of CADASIL.

Indexed as

CADASILLoss of Function MutationReceptor, Notch3AdultFemaleHumansMagnetic Resonance ImagingMaleMiddle AgedPedigreeSeverity of Illness IndexNOTCH3 protein, humanReceptor, Notch3CADASILLoF variantLoss-of-function variant

Identifiers

PMID41947304
PMCPMC13193278

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.