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Cited by 227

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MEF2C haploinsufficiency caused by either microdeletion of the 5q14.3 region or mutation is responsible for severe mental retardation with stereotypic movements, epilepsy and/or cerebral malformations

Open access
Le Meur, N, Holder-Espinasse, M, Jaillard, S, Goldenberg, A, Joriot, S, Amati-Bonneau, P, Guichet, A, Barth, M, Charollais, A, Journel, H, Auvin, S, Boucher, C, Kerckaert, J-P, David, V, Manouvrier-Hanu, S, Saugier-Veber, P, Frébourg, T, Dubourg, C, Andrieux, J, Bonneau, D·2010·Journal of Medical Genetics

Abstract

Background: Over the last few years, array-comparative genomic hybridisation (CGH) has considerably improved our ability to detect cryptic unbalanced rearrangements in patients with syndromic mental retardation. Method: Molecular karyotyping of six patients with syndromic mental retardation was carried out using whole-genome oligonucleotide array-CGH. Results: 5q14.3 microdeletions ranging from 216 kb to 8.8 Mb were detected in five unrelated patients with the following phenotypic similarities: severe mental retardation with absent speech, hypotonia and stereotypic movements. Facial dysmorphic features, epilepsy and/or cerebral malformations were also present in most of these patients. The minimal common deleted region of these 5q14 microdeletions encompassed only MEF2C, the gene for a protein known to act in brain as a neurogenesis effector, which regulates excitatory synapse number. In a patient with a similar phenotype, an MEF2C nonsense mutation was subsequently identified. Conclusion: Taken together, these results strongly suggest that haploinsufficiency of MEF2C is responsible for severe mental retardation with stereotypic movements, seizures and/or cerebral malformations.

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Metadata

Authors
Le Meur, N., Holder-Espinasse, M., Jaillard, S., Goldenberg, A., Joriot, S., Amati-Bonneau, P., Guichet, A., Barth, M., Charollais, A., Journel, H., Auvin, S., Boucher, C., Kerckaert, J.-P., David, V, Manouvrier-Hanu, S., Saugier-Veber, P., Frébourg, T., Dubourg, C., Andrieux, J., & Bonneau, D.
Venue
Journal of Medical Genetics
Publisher
BMJ
Published
2009-07-09
Volume
47
Issue
1
Pages
22-29
ISSN
  • 0022-2593 (ISSN-L)
  • 1468-6244
OpenAlex
W2042298663
Cited by
227
References
5
FWCI
7.66
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: MEF2C haploinsufficiency caused by either microdeletion of the 5q14.3 region or mutation is responsible for severe mental retardation with stereotypic movements, epilepsy and/or cerebral malformations. https://app.cochat.ai/papers/10.1136/jmg.2009.069732
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Le Meur, N., Holder-Espinasse, M., Jaillard, S., Goldenberg, A., Joriot, S., Amati-Bonneau, P., Guichet, A., Barth, M., Charollais, A., Journel, H., Auvin, S., Boucher, C., Kerckaert, J.-P., David, V, Manouvrier-Hanu, S., Saugier-Veber, P., Frébourg, T., Dubourg, C., Andrieux, J., & Bonneau, D. (2010). MEF2C haploinsufficiency caused by either microdeletion of the 5q14.3 region or mutation is responsible for severe mental retardation with stereotypic movements, epilepsy and/or cerebral malformations. Journal of Medical Genetics. https://doi.org/10.1136/jmg.2009.069732

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.