Nicolas Chatron, Felicitas Becker, Heba Morsy, Miriam Schmidts, Katia Hardies, Beyhan Tuysuz, Sandra Roselli, Maryam Najafi, Dilek Uludag Alkaya, Farah Ashrafzadeh, Amira Nabil, Tarek Omar, Reza Maroofian, Ehsan Ghayoor Karimiani, Haytham Hussien, Fernando Kok, Luiza Ramos, Nilay Gunes, Kaya Bilguvar, Audrey Labalme, Eudeline Alix, Damien Sanlaville, Julitta de Bellescize, Anne-Lise Poulat, Ali-Reza Moslemi, Holger Lerche, Patrick May, Gaetan Lesca, Sarah Weckhuysen, Homa Tajsharghi
Developmental and epileptic encephalopathies are a heterogeneous group of early-onset epilepsy syndromes dramatically impairing neurodevelopment. Modern genomic technologies have revealed a number of monogenic origins and opened the door to therapeutic hopes. Here we describe a new syndromic developmental and epileptic encephalopathy caused by bi-allelic loss-of-function variants in GAD1, as presented by 11 patients from six independent consanguineous families. Seizure onset occurred in the first 2 months of life in all patients...
May 1, 2020: Brain