Early onset epileptic encephalopathies (EOEE) are heterogeneous group of severe epilepsies that still need to be better defined and characterized. On a genetic point of view, several dozen of genes have been associated with EOEE, and to date, it is difficult to find a common mechanism to explain EOEE. In this short review, we show that two mains genes are involved in EOEE: STXBP1 and KCNQ2. Focusing on KCNQ2 related EOEE, we show that a relatively similar phenotype can be related to various consequences of mutations on a single gene. This will probably challenge the treatment of EOEE patients.
Keywords: EEE genes; Early epileptic encephalopathies; Severe neonatal seizures.
Copyright © 2016. Published by Elsevier Masson SAS.