Conditions / Genetic

developmental and epileptic encephalopathy 5

info ยท Genetic

A developmental and epileptic encephalopathy characterized by global developmental delay and onset in the first months of life of tonic seizures or infantile spasms that has_material_basis_in heterozygous mutation in the SPTAN1 gene on chromosome 9q34.

Signs and symptoms

  • Progressive microcephaly
  • Microcephaly
  • Spastic tetraplegia
  • Seizure
  • Profound intellectual disability
  • Reduced cerebral white matter volume
  • Hypsarrhythmia
  • Hypoplasia of the corpus callosum
  • Cerebellar atrophy
  • Cerebral cortical atrophy

Also known as: DEE5; early infantile epileptic encephalopathy 5