The phenotypic spectrum of X‐linked, infantile onset ALG13 ‐related developmental and epileptic encephalopathy

Early infantile epileptic encephalopathy

Key-words Disease name / synonyms Definition / diagnostic criteria Differential diagnosis Etiology Clinical description Diagnostic methods Epidemiology Genetic counselling Treatment Unresolved questions References Abstract Early infantile epileptic encephalopathy (EIEE) or Ohtahara syndrome is the earliest form of agedependent encephalopathies, which include also West syndrome and Lennox-Gastau...

Early Infantile Epileptic Encephalopathy Panel

12/17 Clinical Features and Molecular Genetics: Early infantile epileptic encephalopathy (EIEE), also known as Ohtahara syndrome, is a severe form of epilepsy characterized by frequent tonic spasms with onset in the first months of life. EEG reveals suppression-burst patterns, characterized by highvoltage bursts alternating with almost flat suppression phases. Seizures are medically intractable...

Severe infantile epileptic encephalopathy due to mutations in PLCB1: expansion of the genotypic and phenotypic disease spectrum

Homozygous deletions of chromosome 20p12.3, disrupting the promoter region and first three coding exons of the phospholipase C β1 gene (PLCB1), have previously been described in two reports of early infantile epileptic encephalopathy (EIEE). Both children were born to consanguineous parents, one presented with infantile spasms, the other with migrating partial seizures of infancy. We describe a...

The spectrum of SCN1A-related infantile epileptic encephalopathies.

The relationship between severe myoclonic epilepsy of infancy (SMEI or Dravet syndrome) and the related syndrome SMEI-borderland (SMEB) with mutations in the sodium channel alpha 1 subunit gene SCN1A is well established. To explore the phenotypic variability associated with SCN1A mutations, 188 patients with a range of epileptic encephalopathies were examined for SCN1A sequence variations by de...

CDKL5 Encephalopathy: A Rare Cause of Infantile Epileptic Encephalopathy.