Genomic and phenotypic characterization of 404 individuals with neurodevelopmental disorders caused by CTNNB1 variants.
Autism
Cerebral palsy
Familial exudative vitreoretinopathy
Microcephaly
Wnt beta catenin signaling pathway
Journal
Genetics in medicine : official journal of the American College of Medical Genetics
ISSN: 1530-0366
Titre abrégé: Genet Med
Pays: United States
ID NLM: 9815831
Informations de publication
Date de publication:
11 2022
11 2022
Historique:
received:
23
05
2022
revised:
01
08
2022
accepted:
01
08
2022
pubmed:
10
9
2022
medline:
9
11
2022
entrez:
9
9
2022
Statut:
ppublish
Résumé
Germline loss-of-function variants in CTNNB1 cause neurodevelopmental disorder with spastic diplegia and visual defects (NEDSDV; OMIM 615075) and are the most frequent, recurrent monogenic cause of cerebral palsy (CP). We investigated the range of clinical phenotypes owing to disruptions of CTNNB1 to determine the association between NEDSDV and CP. Genetic information from 404 individuals with collectively 392 pathogenic CTNNB1 variants were ascertained for the study. From these, detailed phenotypes for 52 previously unpublished individuals were collected and combined with 68 previously published individuals with comparable clinical information. The functional effects of selected CTNNB1 missense variants were assessed using TOPFlash assay. The phenotypes associated with pathogenic CTNNB1 variants were similar. A diagnosis of CP was not significantly associated with any set of traits that defined a specific phenotypic subgroup, indicating that CP is not additional to NEDSDV. Two CTNNB1 missense variants were dominant negative regulators of WNT signaling, highlighting the utility of the TOPFlash assay to functionally assess variants. NEDSDV is a clinically homogeneous disorder irrespective of initial clinical diagnoses, including CP, or entry points for genetic testing.
Identifiants
pubmed: 36083290
pii: S1098-3600(22)00897-8
doi: 10.1016/j.gim.2022.08.006
pmc: PMC9939054
mid: NIHMS1865456
pii:
doi:
Substances chimiques
CTNNB1 protein, human
0
beta Catenin
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
2351-2366Subventions
Organisme : NICHD NIH HHS
ID : R01 HD104938
Pays : United States
Organisme : NINDS NIH HHS
ID : R01 NS106298
Pays : United States
Informations de copyright
Copyright © 2022 The Authors. Published by Elsevier Inc. All rights reserved.
Déclaration de conflit d'intérêts
Conflict of Interest F.M. and M.M.M. are employees of GeneDX, Inc. All other authors declare no conflict of interest.
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