期刊
BRAIN & DEVELOPMENT
卷 34, 期 5, 页码 364-367出版社
ELSEVIER
DOI: 10.1016/j.braindev.2011.07.004
关键词
CDKL5; Microdeletion; Early-onset epileptic encephalopathy; Rett syndrome-like features
资金
- Ministry of Health, Labour and Welfare
- Japan Society for the Promotion of Science
- Yokohama Foundation for Advancement of Medical Science
- Japan Epilepsy Research Foundation
- Naito Foundation
- Grants-in-Aid for Scientific Research [22689011, 22790823, 24118001] Funding Source: KAKEN
Recent studies have shown that aberrations of CDKL5 in female patients cause early-onset intractable seizures, severe developmental delay or regression, and Rett syndrome-like features. We report on a Japanese girl with early-onset epileptic encephalopathy, hypotonia, developmental regression, and Rett syndrome-like features. The patient showed generalized tonic seizures, and later, massive myoclonus induced by phone and light stimuli. Brain magnetic resonance imaging showed no structural brain anomalies but cerebral atrophy. Electroencephalogram showed frontal dominant diffuse poly spikes and waves. Through copy number analysis by genomic microarray, we found a microdeletion at Xp22.13. A de novo 137-kb deletion, involving exons 5-21 of CDKL5, RS1, and part of PPEF1 gene, was confirmed by quantitative PCR and breakpoint specific PCR analyses. Our report suggests that the clinical features associated with CDKL5 deletions could be implicated in Japanese patients, and that genetic testing of CDKL5, including both sequencing and deletion analyses, should be considered in girls with early-onset epileptic encephalopathy and RTT-like features. (C) 2011 The Japanese Society of Child Neurology. Published by Elsevier B.V. All rights reserved.
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