Language Impairment with a Partial Duplication of DOCK8
Antonio Benítez-Burraco1, Maite Fernández-Urquiza2, Mª Salud Jiménez-Romero3
1Department of Spanish, Linguistics, and Theory of Literature (Linguistics), University of Seville, Seville, Spain.
Molecular Syndromology
|January 29, 2021
Summary
Rare duplications in chromosome 9p24.3 are linked to learning and behavioral issues. This study details a child
Area of Science:
- Genetics
- Neuroscience
- Developmental Biology
Background:
- Distal 9p duplications are rare genetic variations.
- These duplications are associated with cognitive and behavioral impairments.
- Understanding the specific genetic and molecular underpinnings is crucial.
Purpose of the Study:
- To detail the cognitive and language phenotype of a child with a 9p24.3 microduplication.
- To explore the molecular mechanisms potentially causing the observed language deficits.
- To investigate the role of the SLIT/ROBO/FOXP2 network in this condition.
Main Methods:
- Clinical case report.
- Detailed cognitive and language assessment.
- Molecular analysis of the 9p24.3 region (arr[hg19] 9p24.3(266,045-459,076)×3).
Main Results:
- The proband presented with significant expressive and receptive language problems.
- These language deficits may stem from underlying working memory deficits.
- Altered gene expression within the SLIT/ROBO/FOXP2 network is implicated.
Conclusions:
- Microduplications in 9p24.3 can lead to severe language and cognitive impairments.
- The SLIT/ROBO/FOXP2 network, involving DOCK8 and CDC42, is a key player in the pathogenesis.
- Further research into this network can elucidate language development and disorders.
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