Özet:

Objective: To determine whether the epileptic predispositions of recurrent febrile seizures (onset of age 1 and below) could be predicted earlier using analysis of SCN1A gene sequencing. Material and Methods: The study included 55 patients aged between 0-18 who were admitted to pediatric emergency service with a febrile seizure. Patients were selected based on the criteria of presenting recurrent (two or more) febrile seizures with the onset of age one and below, having normal cranial imaging and central nervous system infections being ruled out. SCN1A gene sequence analysis was performed using the next-generation sequencing method. Results: The c.1738C>T and c.4181C>T were the previously reported whereas the c.2914-1G>A and c.473A>G were novel SCN1A heterozygous disease-causing variants which were identified in five of 55 patients from 55 unrelated families (9.09%). The patients with c.1738C>T, c.2914-1G>A, and c.4181C>T variants presented probable Dravet syndrome or Dravet syndrome phenotype, but then the other two with c.473A> G demonstrated genetic epilepsy with febrile seizure plus. Conclusion: Beforehand administration of SCN1A genetic testing in early-onset febrile seizures could be a more significant indicator rather than the clinical risk factors for determining the prognosis and designing the long-term follow-up. 

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