Severe childhood speech disorder: Gene discovery highlights transcriptional dysregulation.
Journal
Neurology
ISSN: 1526-632X
Titre abrégé: Neurology
Pays: United States
ID NLM: 0401060
Informations de publication
Date de publication:
19 05 2020
19 05 2020
Historique:
received:
30
07
2019
accepted:
13
12
2019
pubmed:
30
4
2020
medline:
4
9
2020
entrez:
30
4
2020
Statut:
ppublish
Résumé
Determining the genetic basis of speech disorders provides insight into the neurobiology of human communication. Despite intensive investigation over the past 2 decades, the etiology of most speech disorders in children remains unexplained. To test the hypothesis that speech disorders have a genetic etiology, we performed genetic analysis of children with severe speech disorder, specifically childhood apraxia of speech (CAS). Precise phenotyping together with research genome or exome analysis were performed on children referred with a primary diagnosis of CAS. Gene coexpression and gene set enrichment analyses were conducted on high-confidence gene candidates. Thirty-four probands ascertained for CAS were studied. In 11/34 (32%) probands, we identified highly plausible pathogenic single nucleotide (n = 10; We identify the likely genetic etiology in 11 patients with CAS and implicate 9 genes for the first time. We find that CAS is often a sporadic monogenic disorder, and highly genetically heterogeneous. Highly penetrant variants implicate shared pathways in broad transcriptional regulation, highlighting the key role of transcriptional regulation in normal speech development. CAS is a distinctive, socially debilitating clinical disorder, and understanding its molecular basis is the first step towards identifying precision medicine approaches.
Identifiants
pubmed: 32345733
pii: WNL.0000000000009441
doi: 10.1212/WNL.0000000000009441
doi:
Substances chimiques
Transcription Factors
0
GTP-Binding Protein alpha Subunits, Gi-Go
EC 3.6.5.1
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e2148-e2167Informations de copyright
© 2020 American Academy of Neurology.