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Early onset West syndrome with severe hypomyelination and coloboma‐like optic discs in a girl with SPTAN1 mutation
Author(s) -
Writzl Karin,
Primec Zvonka Rener,
Stražišar Barbara Gnidovec,
Osredkar Damjan,
PečaričMeglič Nuška,
Kranjc Branka Stirn,
Nishiyama Kiyomi,
Matsumoto Naomichi,
Saitsu Hirotomo
Publication year - 2012
Publication title -
epilepsia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.687
H-Index - 191
eISSN - 1528-1167
pISSN - 0013-9580
DOI - 10.1111/j.1528-1167.2012.03437.x
Subject(s) - hypsarrhythmia , coloboma , medicine , white matter , myoclonic jerk , atrophy , leukodystrophy , epileptic spasms , optic nerve , myoclonus , age of onset , pathology , magnetic resonance imaging , epilepsy , pediatrics , ophthalmology , radiology , disease , anesthesia , psychiatry
Summary 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.