Early onset West syndrome with severe hypomyelination and coloboma-like optic discs in a girl with SPTAN1 mutation.

Abstract

Recent study has shown that mutations in the alpha-II-spectrin (SPTAN1) gene cause early onset intractable seizures, severe developmental delay, diffuse hypomyelination, and widespread brain atrophy. We report a Slovene girl with hypotonia, lack of visual attention, early onset epileptic encephalopathy, and severe developmental delay. The patient presented with segmental myoclonic jerks at the age of 6 weeks, and infantile spasms at the age of 3.5 months. Her seizures were resistant to treatment. Multiple electroencephalography recordings showed deterioration of the background activity, followed by multifocal abnormalities before progressing to hypsarrhythmia. Ophthalmologic examination revealed bilateral dysplastic, coloboma-like optic discs. Brain magnetic resonance imaging showed diffusely reduced white matter and brainstem volumes with hypomyelination. A de novo heterozygous in-frame deletion was detected in SPTAN1: c.6619_6621delGAG (p.E2270del). This report supports the causative relationship between SPTAN1 mutations and early onset intractable seizures with severe hypomyelination and widespread brain volume reduction. Coloboma-like optic discs might be an additional feature observed in patients with SPTAN1 mutations.

• Authors: Karin Writzl, Zvonka Rener Primec, Barbara Gnidovec Stražišar, Damjan Osredkar, Nuška Pečarič-Meglič, Branka Stirn Kranjc, Kiyomi Nishiyama, Naomichi Matsumoto, Hirotomo Saitsu
• Journal: Epilepsia (Epilepsia) Vol. 53 Issue 6 Pg. e106-10 (Jun 2012) ISSN: 1528-1167 [Electronic] United States
• PMID: 22429196 (Publication Type: Case Reports, Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Wiley Periodicals, Inc. © 2012 International League Against Epilepsy.

Chemical References

• Carrier Proteins
• Microfilament Proteins
• fodrin

Topics

• Carrier Proteins (genetics)
• Demyelinating Diseases (etiology, pathology)
• Electroencephalography
• Female
• Fluorescein Angiography
• Humans
• Infant
• Magnetic Resonance Imaging
• Microfilament Proteins (genetics)
• Mutation (genetics)
• Myelin Sheath (pathology)
• Optic Nerve Diseases (etiology, genetics, pathology)
• Spasms, Infantile (complications, genetics, pathology)