Further Clinical Delineation of the MEF2C Haploinsufficiency Syndrome: Report on New Cases and Literature Review of Severe Neurodevelopmental Disorders Presenting with Seizures, Absent Speech, and Involuntary Movements
| Autor: | Irena Vrečar, William Reardon, Bronwyn Kerr, Elizabeth A. Jones, Sofia Douzgou, J A Innes, Helen Kingston, Jill Clayton-Smith |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Pediatrics medicine.medical_specialty business.industry Genetic counseling 030105 genetics & heredity Audiology medicine.disease Hypotonia 03 medical and health sciences Epilepsy 0302 clinical medicine MEF2C Gene Pediatrics Perinatology and Child Health Speech delay Intellectual disability medicine medicine.symptom Differential diagnosis business Haploinsufficiency 030217 neurology & neurosurgery Genetics (clinical) |
| Zdroj: | Journal of pediatric genetics. 6(3) |
| ISSN: | 2146-4596 |
| Popis: | Mutations in the MEF2C (myocyte enhancer factor 2) gene have been established as a cause for an intellectual disability syndrome presenting with seizures, absence of speech, stereotypic movements, hypotonia, and limited ambulation. Phenotypic overlap with Rett's and Angelman's syndromes has been noted. Following the first reports of 5q14.3q15 microdeletions encompassing the MEF2C gene, further cases with point mutations and partial gene deletions of the MEF2C gene have been described. We present the clinical phenotype of our cohort of six patients with MEF2C mutations and compare our findings with previously reported patients as well as with a growing number of genetic conditions presenting with a severe neurodevelopmental, Rett-like, phenotype. We aim to add to the current knowledge of the natural history of the “MEF2C haploinsufficiency syndrome” as well as of the differential diagnosis, clinical management, and genetic counseling in this diagnostically challenging group of patients. |
| Databáze: | OpenAIRE |
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