Journal article

Early onset absence epilepsy: 1 in 10 cases is caused by GLUT1 deficiency

Todor Arsov, Saul A Mullen, John A Damiano, Kate M Lawrence, Linda L Huh, Melinda Nolan, Helen Young, Anais Thouin, Hans-Henrik M Dahl, Samuel F Berkovic, Douglas E Crompton, Lynette G Sadleir, Ingrid E Scheffer



Glucose transporter 1 (GLUT1) deficiency caused by mutations of SLC2A1 is an increasingly recognized cause of genetic generalized epilepsy. We previously reported that >10% (4 of 34) of a cohort with early onset absence epilepsy (EOAE) had GLUT1 deficiency. This study uses a new cohort of 55 patients with EOAE to confirm that finding. Patients with typical absence seizures beginning before 4 years of age were screened for solute carrier family 2 (facilitated glucose transporter), member 1 (SLC2A1) mutations or deletions. All had generalized spike-waves on electroencephalography (EEG). Those with tonic and/or atonic seizures were excluded. Mutations were found in 7 (13%) of 55 cases, includin..

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