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Dev Period Med ; 19(4): 454-63, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26982753

RESUMO

THE AIM: To present the molecular and clinical characteristics of three children with glucose deficiency syndrome, an inborn rare metabolic disease, caused by mutations in the SLC2A1 gene. MATERIAL AND METHODS: The investigation was carried out in three children: two girls and one boy showing symptoms of GLUT1 deficiency syndrome (GLUT1-DS). They were referred for SLC2A1 gene analysis. RESULTS: The presence of mutations in all of them was confirmed. Only point mutations were identified, two missenses p.Gly132Ser, p.Arg212Cys and amino acid insertion p.Ser_Val227insValProPro. In two cases the mutations arose de novo, one was heritable of paternal origin. CONCLUSIONS: GLUT1-DS shows high clinical variability. It should be suspected in children of any age presenting with single features or a combination of any form of intractable epilepsy with seizures of various types, movement disorders and paroxysmal events, especially triggered by exercise, exertion, or fasting, and any unexplainable neurological deterioration. The basic diagnostic hallmarks of GLUT1-DS are CSF hypoglycorrhachia and lowered CSF/Blood serum glucose ratio. This is why lumbar punction should be considered more frequently than it is in practice being performed nowadays. Antiepileptic drug treatment may be ineffective or even potentially detrimental. Early identification and molecular confirmation of GLUT1-DS is important, because this is a metabolic disorder and patients should as soon as possible primarily be treated with a ketogenic diet.


Assuntos
Epilepsia/genética , Transportador de Glucose Tipo 1/deficiência , Transportador de Glucose Tipo 1/genética , Criança , Análise Mutacional de DNA , Feminino , Humanos , Masculino , Mutação , Doenças Neurodegenerativas/genética
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