A Human Pleiotropic Multiorgan Condition Caused by Deficient Wnt Secretion.
Abnormalities, Multiple
/ genetics
Animals
Congenital Abnormalities
/ genetics
Disease Models, Animal
Fibroblasts
/ metabolism
Gene Knock-In Techniques
Genes, Recessive
Genetic Pleiotropy
Humans
Intracellular Signaling Peptides and Proteins
/ genetics
Mice
Mice, Transgenic
Mutation
Pedigree
Phenotype
Receptors, G-Protein-Coupled
/ genetics
Syndrome
Wnt Proteins
/ metabolism
Wnt Signaling Pathway
Journal
The New England journal of medicine
ISSN: 1533-4406
Titre abrégé: N Engl J Med
Pays: United States
ID NLM: 0255562
Informations de publication
Date de publication:
30 09 2021
30 09 2021
Historique:
entrez:
29
9
2021
pubmed:
30
9
2021
medline:
30
10
2021
Statut:
ppublish
Résumé
Structural birth defects occur in approximately 3% of live births; most such defects lack defined genetic or environmental causes. Despite advances in surgical approaches, pharmacologic prevention remains largely out of reach. We queried worldwide databases of 20,248 families that included children with neurodevelopmental disorders and that were enriched for parental consanguinity. Approximately one third of affected children in these families presented with structural birth defects or microcephaly. We performed exome or genome sequencing of samples obtained from the children, their parents, or both to identify genes with biallelic pathogenic or likely pathogenic mutations present in more than one family. After identifying disease-causing variants, we generated two mouse models, each with a pathogenic variant "knocked in," to study mechanisms and test candidate treatments. We administered a small-molecule Wnt agonist to pregnant animals and assessed their offspring. We identified homozygous mutations in Genetic variations affecting a central Wnt regulator caused syndromic structural birth defects. Results from mouse models suggest that what we have named Zaki syndrome is a potentially preventable disorder. (Funded by the National Institutes of Health and others.).
Sections du résumé
BACKGROUND
Structural birth defects occur in approximately 3% of live births; most such defects lack defined genetic or environmental causes. Despite advances in surgical approaches, pharmacologic prevention remains largely out of reach.
METHODS
We queried worldwide databases of 20,248 families that included children with neurodevelopmental disorders and that were enriched for parental consanguinity. Approximately one third of affected children in these families presented with structural birth defects or microcephaly. We performed exome or genome sequencing of samples obtained from the children, their parents, or both to identify genes with biallelic pathogenic or likely pathogenic mutations present in more than one family. After identifying disease-causing variants, we generated two mouse models, each with a pathogenic variant "knocked in," to study mechanisms and test candidate treatments. We administered a small-molecule Wnt agonist to pregnant animals and assessed their offspring.
RESULTS
We identified homozygous mutations in
CONCLUSIONS
Genetic variations affecting a central Wnt regulator caused syndromic structural birth defects. Results from mouse models suggest that what we have named Zaki syndrome is a potentially preventable disorder. (Funded by the National Institutes of Health and others.).
Identifiants
pubmed: 34587386
doi: 10.1056/NEJMoa2033911
pmc: PMC9017221
mid: NIHMS1790232
doi:
Substances chimiques
Gpr177 protein, mouse
0
Intracellular Signaling Peptides and Proteins
0
Receptors, G-Protein-Coupled
0
WLS protein, human
0
Wnt Proteins
0
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1292-1301Subventions
Organisme : NINDS NIH HHS
ID : R01 NS048453
Pays : United States
Organisme : NINDS NIH HHS
ID : R01 NS098004
Pays : United States
Organisme : NIGMS NIH HHS
ID : R35 GM132120
Pays : United States
Organisme : NINDS NIH HHS
ID : P30 NS047101
Pays : United States
Organisme : NICHD NIH HHS
ID : P01 HD104436
Pays : United States
Informations de copyright
Copyright © 2021 Massachusetts Medical Society.
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