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A Novel SCN1A Mutation: A Case Report.

Mahmut Aslan¹, Bilge Ozgor¹, Serkan Kirik¹

¹Department of Pediatrics and Pediatric Neurology, Faculty of Medicine, Inonu University, Malatya, Turkey.

Journal of Pediatric Neurosciences

|October 12, 2020

Summary

This summary is machine-generated.

Dravet syndrome (DS) is a severe epilepsy characterized by early-onset seizures. A new SCN1A mutation was identified in a patient with refractory epilepsy, developmental delay, and unexpected hepatomegaly.

Keywords:

Novel mutation SCN1A seizure

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Area of Science:

Genetics
Neurology
Pediatrics

Background:

Dravet syndrome (DS) is a severe form of epilepsy beginning in infancy.
It involves myoclonic seizures, developmental delays, and increased mortality.
Seizures often start with fever but can evolve to occur without fever.

Observation:

A 3-year-old male patient presented with refractory epilepsy and neuromotor developmental retardation.
He experienced afebrile seizures starting at 4 months old.
Genetic testing revealed a novel homozygous SCN1A mutation (p.Y1599Ffs*19-c.4796delA).

Findings:

The patient exhibited hepatomegaly, an atypical finding in Dravet syndrome.
The novel SCN1A mutation was also found in heterozygous form in the family.
The etiology of hepatomegaly remained undetermined but potentially linked to the new mutation.

Implications:

Diagnostic genetic testing for SCN1A mutations is crucial for patients with afebrile seizures and developmental delay.
This case highlights a potential new phenotype associated with SCN1A mutations, including hepatomegaly.
Further research is needed to understand the role of this novel mutation in DS and associated symptoms.