Undetermined early-onset epileptic encephalopathy
MONDO:0018614A rare infantile epilepsy syndrome characterized by early onset of seizures of variable type and severity, potentially associated with a spectrum of clinical signs and symptoms including delay or lack of psychomotor development, intellectual disability, poor or absent speech development, behavioral abnormalities, hypotonia, movement disorders, spasticity, microcephaly, and dysmorphic facial features, among others. Brain imaging findings are also variable and may include cerebral atrophy or white matter abnormalities.
Also known as: non-specific early-onset epileptic encephalopathy, undetermined EOEE, undetermined early-onset epileptic encephalopathy
36 clinical trials for this condition and its sub-types.
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Promising seizure drug study halted early
Disease control TerminatedThis study looked at the long-term safety of the drug NBI-921352 for people with a rare genetic seizure disorder called SCN8A-DEE. It was an extension of an earlier study, and participants took the drug alongside their usual seizure medications. The study was stopped early and on…
Phase: PHASE2 • Sponsor: Neurocrine Biosciences • Aim: Disease control
Last updated Jun 27, 2026 12:37 UTC
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Promising epilepsy drug trial halted early – what we know
Disease control TerminatedThis study tested an experimental drug called NBI-921352 in people aged 2 to 21 with a rare, severe form of epilepsy caused by a change in the SCN8A gene. The goal was to see if adding this drug to their current seizure medicines could reduce how often they had seizures. The tria…
Phase: PHASE2 • Sponsor: Neurocrine Biosciences • Aim: Disease control
Last updated Jun 27, 2026 07:54 UTC