Conditions / Genetic

developmental and epileptic encephalopathy 14

info ยท Genetic

A developmental and epileptic encephalopathy characterized by refractory focal seizures developing by 6 months of age and arrest of psychomotor development that has_material_basis_in heterozygous mutation in the KCNT1 gene on chromosome 9q34.

Signs and symptoms

  • Hypotonia
  • Brain atrophy
  • Generalized-onset motor seizure
  • Interictal epileptiform activity
  • Focal motor seizure
  • Epileptic encephalopathy
  • Profound global developmental delay
  • Focal tonic seizure
  • Hypoplasia of the corpus callosum
  • Clonus

Also known as: DEE14; early infantile epileptic encephalopathy 14