John Libbey Eurotext

Epileptic Disorders

The Educational Journal of the International League Against Epilepsy

KCTD7-related progressive myoclonus epilepsy Volume 18, supplément 2, September 2016

Illustrations

  • Figure 1

Tableaux

Auteur
Department of Pediatric Neurology, Université Libre de Bruxelles, Hôpital Erasme, Belgium
* Correspondence: Patrick Van Bogaert Department of Pediatric Neurology, Université Libre de Bruxelles, Hôpital Erasme, Belgium
  • Mots-clés : KCTD7, progressive myoclonus epilepsies, infancy, encephalopathy
  • DOI : 10.1684/epd.2016.0856
  • Page(s) : 115-9
  • Année de parution : 2016

Progressive myoclonic epilepsy associated with KCTD7 mutations has been reported in 19 patients from 12 families. Patients show homozygous mutations in the coding regions of the KCTD7 gene. The disease starts in infancy. Patients typically show an initial severe epileptic disorder, with abundant epileptiform discharges on EEG and myoclonic seizures in the foreground, associated with cognitive regression and ataxia. Continuous multifocal myoclonus aggravated by action is observed in more than half of the cases. After a few years, the disease tends to stabilize and long survival can be expected. Some patients remain able to walk independently. The severity of the disease is variable from one patient to another, even within the same family. It is hypothesized that the epileptic disorder may influence the neurological regression observed in patients.