Evidence map›Paper›PMID 36114808›Full record

Trial reportEpilepsia2022

Paroxysmal fast activity is a biomarker of treatment response in deep brain stimulation for Lennox-Gastaut syndrome.

Linda J Dalic, Aaron E L Warren, Chloe Spiegel, Wesley Thevathasan, Annie Roten, Kristian J Bulluss, John S Archer

Open access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Epilepsia, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
3.3field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 26 citations in OpenAlex.

  1. Trial
  2. Resolution of generalized tonic seizures following focal ablative or resective surgery.Epileptic disorders : international epilepsy journal with videotape · 2026
    Article
  3. Review
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 1 country.

Linda J DalicDepartment of Medicine, Austin Health, University of Melbourne, Heidelberg, Victoria, Australia.ORCID 0000-0001-8335-1348
Aaron E L WarrenDepartment of Medicine, Austin Health, University of Melbourne, Heidelberg, Victoria, Australia.
Chloe SpiegelDepartment of Neurology, Austin Health, Heidelberg, Victoria, Australia.
Wesley ThevathasanDepartment of Medicine, Austin Health, University of Melbourne, Heidelberg, Victoria, Australia.
Annie RotenDepartment of Neurology, Austin Health, Heidelberg, Victoria, Australia.
Kristian J BullussBionics Institute, East Melbourne, Victoria, Australia.
John S ArcherDepartment of Medicine, Austin Health, University of Melbourne, Heidelberg, Victoria, Australia.ORCID 0000-0002-3939-3847
The University of Melbourne · AUAustin Health · AUBionics Institute · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveEpilepsy treatment trials typically rely on seizure diaries to determine seizure frequency, but these are time-consuming and difficult to maintain accurately. Fast, reliable, and objective biomarkers of treatment response are needed, particularly in Lennox-Gastaut syndrome (LGS), where high seizure frequency and comorbid cognitive and behavioral issues are additional obstacles to accurate diary-keeping. Here, we measured generalized paroxysmal fast activity (GPFA), a key interictal electrographic feature of LGS, and correlated GPFA burden with seizure diaries during a thalamic deep brain stimulation (DBS) treatment trial (Electrical Stimulation of the Thalamus in Epilepsy of Lennox-Gastaut Phenotype [ESTEL]).

methodsGPFA and electrographic seizure counts from intermittent, 24-h electroencephalograms (EEGs) were compared to 3-month diary-recorded seizure counts in 17 young adults with LGS (mean age ± SD = 24.9 ± 6.6) in the ESTEL study, a randomized clinical trial of DBS lasting 12 months (comprising a 3-month baseline and 9 months of postimplantation follow-up).

resultsBaseline median seizures measured by diaries numbered 2.6 (interquartile range [IQR] = 1.4-5) per day, compared to 284 (IQR = 120.5-360) electrographic seizures per day, confirming that diaries capture only a small fraction of seizure burden. Across all patient EEGs, the average number of GPFA discharges per hour of sleep was 138 (IQR =72-258). GPFA duration and frequency, quantified over 2-h windows of sleep EEG, were significantly associated with diary-recorded seizure counts over 3-month intervals (p < .001, η SIGNIFICANCE: When seeking to optimize treatment in patients with LGS, monitoring changes in GPFA may allow rapid titration of treatment parameters, rather than waiting for feedback from seizure diaries.

Indexed as

Deep Brain StimulationLennox Gastaut SyndromeHumansSeizuresdeep brain stimulationepilepsyGPFALGSoutcome prediction

Identifiers

PMID36114808
PMCPMC10946931
OpenAlexW4296165038

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.