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CHD3 helicase domain mutations cause a neurodevelopmental syndrome with macrocephaly and impaired speech and language.
Nat. Commun. 9:4619 (2018)
Chromatin remodeling is of crucial importance during brain development. Pathogenic alterations of several chromatin remodeling ATPases have been implicated in neurodevelopmental disorders. We describe an index case with a de novo missense mutation in CHD3, identified during whole genome sequencing of a cohort of children with rare speech disorders. To gain a comprehensive view of features associated with disruption of this gene, we use a genotype-driven approach, collecting and characterizing 35 individuals with de novo CHD3 mutations and overlapping phenotypes. Most mutations cluster within the ATPase/helicase domain of the encoded protein. Modeling their impact on the three-dimensional structure demonstrates disturbance of critical binding and interaction motifs. Experimental assays with six of the identified mutations show that a subset directly affects ATPase activity, and all but one yield alterations in chromatin remodeling. We implicate de novo CHD3 mutations in a syndrome characterized by intellectual disability, macrocephaly, and impaired speech and language.
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Article: Journal article
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Scientific Article
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Keywords
De-novo Mutations; Chromatin Remodeling Complex; Intellectual Disability; Deacetylase Complex; Exome; Disorder; Family; Gene; Nurd; Diagnosis
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english
Publication Year
2018
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2018
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2041-1723
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2041-1723
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Volume: 9,
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Article Number: 4619
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Nature Publishing Group
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London
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Peer reviewed
POF-Topic(s)
30501 - Systemic Analysis of Genetic and Environmental Factors that Impact Health
Research field(s)
Genetics and Epidemiology
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G-500700-001
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Erfassungsdatum
2018-11-28