Ring chromosome 20: a pediatric potassium channelopathy responsive to treatment with ezogabine.

Abstract:

BACKGROUND:Ring chromosome 20 is a genetic disorder characterized by intractable epilepsy, behavioral problems, and cognitive deficit. The potassium channel-coding gene KCNQ2 is localized at the locus q13.3 on the chromosome 20, the most common site where the ring occurs. Ezogabine is the first potassium channel opener marketed in the United States. PATIENTS:We describe an 8-year-old girl with mosaic ring chromosome 20 and refractory epilepsy who had a remarkable improvement in seizure control with ezogabine. CONCLUSIONS:This is the first report using the new antiepileptic drug ezogabine to treat pediatric epilepsy. We hypothesize that ring chromosome 20 patients have epilepsy related to abnormalities in the potassium channels, making it susceptible for treatment with potassium channel openers.

journal_name

Pediatr Neurol

journal_title

Pediatric neurology

authors

Walleigh DJ,Legido A,Valencia I

doi

10.1016/j.pediatrneurol.2013.06.005

subject

Has Abstract

pub_date

2013-11-01 00:00:00

pages

368-9

issue

5

eissn

0887-8994

issn

1873-5150

pii

S0887-8994(13)00339-1

journal_volume

49

pub_type

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