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Research paper

Long-term outcome of 32 children with encephalopathy with status epilepticus during sleep, or ESES syndrome

Prospective 32-child cohort with ESES followed long-term. EEG abnormalities and clinical seizures typically remitted; a substantial fraction retained meaningful cognitive and behavioral deficits. Earlier onset and longer duration of active ESES associated with worse outcomes.

Indexed context

Liukkonen E, Kantola-Sorsa E, Paetau R, Gaily E, Peltola M, Granström ML

esescswslong-term-outcomepediatricprognosis

Markdown path

content/research/papers/2010-liukkonen-eses-32-children-long-term.md

Findings

Prospective 32-child cohort with ESES followed long-term. EEG abnormalities and clinical seizures typically remitted; a substantial fraction retained meaningful cognitive and behavioral deficits. Earlier onset and longer duration of active ESES associated with worse outcomes.

Why it may matter for Levi

Reinforces the imperative of minimizing active-disease duration in Levi. The April 2026 electrographic resolution is favorable; the depth of regression and probable long pre-diagnosis active period are counterweights. Supports durability-of-suppression emphasis and high-intensity developmental therapy during the current window.

Paper text

Liukkonen et al. (2010) — Long-term outcome of 32 children with ESES

Source

Why this paper is in the corpus

Prospective long-term outcome study in 32 children with ESES. One of the foundational cohorts establishing that while the EEG and seizure phenotype typically remit in adolescence, cognitive and behavioral deficits frequently persist into adulthood. Provides the prognostic scaffold for the Caraballo 2013 and van Arnhem 2025 outcome studies that followed.

Key findings

  • 32-child prospective cohort with ESES followed long-term.
  • EEG abnormalities and clinical seizures typically remitted with time.
  • A substantial fraction of children retained meaningful cognitive and behavioral deficits at long-term follow-up.
  • Earlier age of onset and longer duration of active ESES were associated with worse neurodevelopmental outcomes.

Levi-relevant takeaways

  • Reinforces the clinical imperative of minimizing the duration of active sleep-activated epileptiform discharges in Levi. The dramatic April 2026 electrographic resolution is a favorable prognostic signal; the depth of his pre-pulse regression and duration of active DEE-SWAS (unclear precisely, since the condition was not diagnosed until March 2026) remain counterweights.
  • Supports the continued emphasis on preserving the durability of the steroid response and on high-intensity developmental therapies (speech, OT, AAC) during the window of electrographic suppression.
  • Keeps long-horizon neuropsychological follow-up on the priority list — the relevant measurement timeframe is years, not weeks.

Citation note

Referenced as [20] in the 2026-04-21 user-supplied comprehensive DEE-SWAS / ESES / CSWS research report.