Journal article

The epileptology of GNB5 encephalopathy

G Poke, C King, A Muir, G de Valles-Ibáñez, M Germano, CF Moura de Souza, J Fung, B Chung, CW Fung, C Mignot, A Ilea, B Keren, AI Vermersch, S Davis, T Stanley, M Moharir, P Kannu, Z Shao, N Malerba, G Merla Show all

Epilepsia | WILEY | Published : 2019

Abstract

Pathogenic variants in GNB5 cause an autosomal recessive neurodevelopmental disorder with neonatal sinus bradycardia. Seizures or epilepsy occurred in 10 of 22 previously reported cases, including 6 children from one family. We delineate the epileptology of GNB5 encephalopathy. Our nine patients, including five new patients, were from seven families. Epileptic spasms were the most frequent seizure type, occurring in eight of nine patients, and began at a median age of 3 months (2 months to 3 years). Focal seizures preceded spasms in three children, with onset at 7 days, 11 days, and 4 months. One child presented with convulsive status epilepticus at 6 months. Three children had burst suppres..

View full abstract

University of Melbourne Researchers