Effect of total callosotomy on KCNQ2-related intractable epilepsy.

Abstract:

AIM:To describe beneficial effects of callosotomy on KCNQ2-related intractable epilepsy. CASE REPORT:Our patient was a 10-year-old girl who had developed epilepsy during the neonatal period, accompanied by a suppression-burst pattern on the electroencephalography (EEG). The patient showed profound psychomotor developmental delay since early infancy. Daily seizures of versive posturing and ocular deviation were transiently controlled by carbamazepine and valproate at the age of 1 year; however, the seizures gradually increased to up to 50 times per day. Ictal EEG and positron emission tomography revealed an epileptic focus in the left frontal lobe at age 5 years. Total callosotomy resulted in marked reduction of epileptic seizures thereafter, as well as improved responses to external auditory and visual stimuli. Whole exome sequencing at age 9 identified a de novo missense variant in KCNQ2 (NM_172107.3:c.563A > C:p.(Gln188Pro)). CONCLUSION:This case supports that epilepsy surgery could benefit children with epileptic encephalopathy, even with the etiology of channelopathy.

journal_name

Brain Dev

journal_title

Brain & development

authors

Yamamoto A,Saito Y,Oyama Y,Watanabe Y,Ikeda A,Takayama R,Ikeda H,Takeshita S,Takumi I,Itai T,Miyatake S,Matsumoto N

doi

10.1016/j.braindev.2020.05.005

subject

Has Abstract

pub_date

2020-09-01 00:00:00

pages

612-616

issue

8

eissn

0387-7604

issn

1872-7131

pii

S0387-7604(20)30146-7

journal_volume

42

pub_type

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