| Autor: |
Takuya Masuda, Hitoshi Osaka, Naomi Tsuchida, Satoko Miyatake, Kou Nishimura, Toshiki Takenouchi, Takao Takahashi, Naomichi Matsumoto, Takanori Yamagata |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Epilepsy & Behavior Reports, Vol 19, Iss , Pp 100547- (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2589-9864 |
| DOI: |
10.1016/j.ebr.2022.100547 |
| Popis: |
Copy number variations (CNVs) have been related to developmental and epileptic encephalopathy (DEE). The 2q24.3 region includes a cluster of genes for voltage-gated sodium channels (SCN) and CNVs in this region cause DEE. However, the long-term course of DEE with a 2q24.3 duplication has not been described. A 20-year-old female developed epileptic encephalopathy in early infancy that was resistant to various antiseizure medications. Her seizures disappeared after starting vitamin B6 therapy. Therefore, her epilepsy was considered pyridoxine-dependent epilepsy. At 16 years old, whole exome sequencing revealed a 2q24.3 microduplication including SCN1A, SCN2A, SCN3A, SCN7A, and SCN9A. Quantitative PCR detected an increased copy number of 1.3 Mb on 2q24.3 involving these genes, but no gene mutation accounting for pyridoxine-dependent epilepsy. Considering that with this duplication she was reported to be seizure-free after infancy, she was able to be off antiseizure medications including vitamin B6. Our case involvingdrug-resistant epilepsy in early infancy had no recurrent seizures during long-term follow up. Detecting CNVs using whole exome sequencing data was useful to identify a 2q24.3 duplication unassociated with pyridoxine-dependent epilepsy, leading to cessation of unnecessary medications. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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