Glucose Transporter Type I Deficiency Syndrome GLUT1 DS

Clinical features:

Seizures, developmental delay, spasticity, acquired microcephaly, and ataxia
Dystonia

Genetics:

Autosomal dominant, de novo mutation
SLC2A1 gene,

Findings on investigations:

CSF: low glucose, low glucose:serum ratio, low CSF lactate
Erythrocyte glucose transporter activity: reduced uptake into erythrocytes

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