Early onset absence epilepsy: 1 in 10 cases is caused by GLUT1 deficiency.
Epilepsia
; 53(12): e204-7, 2012 Dec.
Article
en En
| MEDLINE
| ID: mdl-23106342
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, including five missense mutations, an in-frame deletion leading to loss of a single amino acid, and a deletion spanning two exons. Over both studies, 11 (12%) of 89 probands with EOAE have GLUT1 deficiency. Given the major treatment and genetic counseling implications, this study confirms that SLC2A1 mutational analysis should be strongly considered in EOAE.
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Errores Innatos del Metabolismo de los Carbohidratos
/
Epilepsia Tipo Ausencia
/
Mutación
Tipo de estudio:
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Risk_factors_studies
Idioma:
En
Revista:
Epilepsia
Año:
2012
Tipo del documento:
Article