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Edaravone Dexborneol for Post-Stroke Epilepsy (EDEN-PSE)

A Randomized, Double-blind, Placebo-controlled, Multicenter Clinical Study of Edaravone Dexborneol Sublingual Tablets for the Prevention of Post-Stroke Epilepsy

This is a prospective, randomized, double-blind, placebo-controlled, multicenter clinical trial designed to evaluate the efficacy and safety of Edaravone Dexborneol sublingual tablets in preventing late-onset epilepsy in patients with acute ischemic stroke at high risk.

Eligible participants are adults aged 18-80 years with a confirmed diagnosis of acute ischemic stroke by clinical and imaging criteria (MRI or CT), enrolled within 48 hours of stroke onset. High risk for post-stroke epilepsy is defined as a SeLECT-EEG score ≥7. Patients must have no prior history of epilepsy or other central nervous system disorders associated with seizures. Key exclusion criteria include prior seizures before enrollment, recent stroke within the past 12 months, severe renal or hepatic dysfunction, significant cardiac insufficiency, drug hypersensitivity, pregnancy or lactation, and other conditions deemed unsuitable by investigators.

A total of approximately 160 participants will be randomized in a 1:1 ratio to receive either Edaravone Dexborneol sublingual tablets or matching placebo.

The primary endpoint is a composite outcome assessed within 2 years, defined as the occurrence of either: (1) definite clinical epileptic seizures, or (2) new-onset or worsening epileptiform EEG abnormalities (including IEDs, PDs, LRDAs) or electrographic seizures.

Secondary endpoints include: incidence of individual components of the primary outcome; time to first seizure; characteristics, severity, and frequency of seizures; longitudinal changes and resolution rate of epileptiform EEG activity; cognitive function assessed by MoCA and MMSE; neurological outcomes evaluated by mRS and NIHSS; quality of life and functional independence measured by SSQOL and Barthel Index; recurrence of stroke and all-cause mortality; changes in inflammatory biomarkers (TNF-α, IL-1β, COX-2, iNOS); and safety outcomes including treatment-emergent adverse events, serious adverse events, laboratory abnormalities, and treatment discontinuation due to adverse events.

All efficacy and safety outcomes will be independently reviewed by a blinded adjudication committee. Statistical analyses will include chi-square or Fisher's exact tests for categorical outcomes, Kaplan-Meier survival analysis with log-rank tests for time-to-event data, and Cox proportional hazards models to adjust for potential confounders.

The study period is planned from June 2026 to June 2030.

Studienübersicht

Status

Noch keine Rekrutierung

Bedingungen

Intervention / Behandlung

Studientyp

Interventionell

Einschreibung (Geschätzt)

160

Phase

  • Phase 3

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Studienorte

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Erwachsene
  • Älterer Erwachsener

Akzeptiert gesunde Freiwillige

Nein

Beschreibung

Inclusion criteria: 1. Adults aged 18 to 80 years, of either sex.

2. Diagnosis of acute ischemic stroke confirmed by clinical presentation and neuroimaging (MRI or CT).

3. Time from stroke onset to screening/randomization ≤48 hours.

4. High risk of post-stroke epilepsy, defined as a SeLECT-EEG score ≥7, including: stroke severity (Se, 0-2 points), large-artery atherosclerosis etiology (L, 0-1 point), cortical involvement (C, 0-2 points), middle cerebral artery territory infarction (T, 0-1 point), and EEG findings (EEG, 0-2 points).

5. No prior history of epilepsy before the index stroke, and no history of other central nervous system disorders (e.g., traumatic brain injury, brain tumor) associated with seizures.

6. Conscious at enrollment or with recovered consciousness after treatment, and able to cooperate with sublingual medication administration and follow-up assessments.

7. Provision of written informed consent by the patient or a legally authorized representative.

Exclusion criteria: 1. History of epilepsy or occurrence of any seizure prior to screening.

2. History of ischemic or hemorrhagic stroke within 12 months prior to the index stroke.

3. Large cerebral infarction with severe intracranial hypertension on imaging after stroke, with limited life expectancy or inability to complete follow-up.

4. Severe renal impairment (significantly reduced eGFR according to contraindications of edaravone dexborneol) or a history of edaravone-related renal injury.

5. Severe hepatic dysfunction (ALT or AST >3 times the upper limit of normal) or severe heart failure (New York Heart Association class III-IV) that may preclude tolerance to the study drug.

6. Known hypersensitivity to edaravone or borneol, or a history of severe drug allergy.

7. Pregnant or breastfeeding women; women of childbearing potential unwilling to use effective contraception.

8. Presence of other serious diseases (e.g., advanced malignancy) that may affect survival or study compliance.

9. Any other condition that, in the investigator's judgment, makes the patient unsuitable for participation in the study.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Verhütung
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Vervierfachen

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Edaravone Dexborneol group
Participants in the experimental group will receive edaravone dexborneol sublingual tablets in addition to standard stroke therapy. Each tablet contains edaravone 30 mg and borneol 6 mg. The drug will be administered as one tablet sublingually twice daily, with an interval of at least 6 hours between doses. Treatment will be initiated within 48 hours after stroke onset and continued for 3 months.
In the experimental group, patients received edaravone dexborneol sublingual tablets in addition to standard stroke therapy. Each tablet contained edaravone 30 mg plus borneol 6 mg, administered as one tablet sublingually twice daily (with an interval of ≥6 hours between doses). Treatment was initiated as early as possible within 48 hours after stroke onset and continued for consecutive three months.
Placebo-Komparator: Control group
Participants in the control group will receive matching placebo sublingual tablets with identical appearance, dosage form, and odor to the experimental drug. The administration method, dosing frequency, and treatment duration will be the same as in the experimental group. Both groups will receive standard stroke secondary prevention and rehabilitation therapy, without additional antiepileptic medications.
In the control group, patients received placebo sublingual tablets identical in appearance, formulation, and odor to the investigational product (edaravone 0 mg plus borneol 60 μg, with trace borneol added to ensure odor matching). Administration was initiated within 48 hours of stroke onset, at a regimen of one tablet sublingually twice daily (≥6-hour interval between doses), continued for consecutive three months.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Proportion of participants with composite seizure-related events
Zeitfenster: Up to 24 months
Composite seizure-related events are defined as the occurrence of any of the following during follow-up: (1) clinical epileptic seizures occurring more than 7 days after stroke onset; (2) newly developed or worsening epileptiform activity on electroencephalography (EEG), including interictal epileptiform discharges (IEDs), periodic discharges (PDs), or lateralized rhythmic delta activity (LRDA); or (3) electrographic seizures.
Up to 24 months

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Number of participants with late-onset clinical seizures
Zeitfenster: Up to 24 months
Late-onset seizures are defined as clinical epileptic seizures occurring more than 7 days after stroke onset. The proportion of participants experiencing at least one seizure during follow-up will be recorded.
Up to 24 months
Proportion of participants with new or worsening epileptiform EEG abnormalities
Zeitfenster: Up to 24 months
Epileptiform EEG abnormalities include interictal epileptiform discharges (IEDs), periodic discharges (PDs), and lateralized rhythmic delta activity (LRDA). New abnormalities are defined as findings not present on baseline EEG. Worsening is defined as progression of pre-existing abnormalities compared with baseline, including increased frequency, transition to a continuous pattern, or expansion in spatial distribution.
Up to 24 months
Time to first late-onset clinical seizure
Zeitfenster: Up to 24 months
Time from stroke onset to the first occurrence of a late-onset clinical seizure, measured in days.
Up to 24 months
Proportion of participants with electrographic seizures without clinical manifestations
Zeitfenster: Up to 24 months
Electrographic seizures without clinical manifestations are defined as seizure activity detected on electroencephalography (EEG) without corresponding observable clinical symptoms. Participants will be counted as having an event if one or more such events are detected during follow-up.
Up to 24 months
Proportion of participants with resolution of epileptiform EEG activity
Zeitfenster: At 3, 6, 12, 18, and 24 months
Among participants with epileptiform EEG activity at baseline, the proportion achieving resolution (conversion to normal EEG without epileptiform discharges) will be assessed at each follow-up visit.
At 3, 6, 12, 18, and 24 months
Number of seizure episodes per participant
Zeitfenster: Up to 24 months
Total number of seizure episodes per participant during the 24-month follow-up period will be recorded. Median seizure frequency will be compared between groups.
Up to 24 months
Proportion of participants with severe seizure outcomes
Zeitfenster: Up to 24 months
Severe seizure outcomes include progression to status epilepticus or generalized tonic-clonic seizures. The distribution of seizure severity will be recorded.
Up to 24 months
Change in Montreal Cognitive Assessment (MoCA) score from baseline
Zeitfenster: Baseline, 3, 6, 12, 18, and 24 months
Cognitive function will be assessed using the Montreal Cognitive Assessment (MoCA; total score range 0-30, higher scores indicate better cognitive function). Changes in score from baseline will be evaluated at each follow-up visit.
Baseline, 3, 6, 12, 18, and 24 months
Change in Mini-Mental State Examination (MMSE) score from baseline
Zeitfenster: Baseline, 3, 6, 12, 18, and 24 months
Cognitive function will be assessed using the Mini-Mental State Examination (MMSE; total score range 0-30, higher scores indicate better cognitive function). Changes in score from baseline will be evaluated at each follow-up visit.
Baseline, 3, 6, 12, 18, and 24 months
Change in modified Rankin Scale (mRS) score from baseline
Zeitfenster: Baseline, 3, 6, 12, 18, and 24 months
Functional neurological outcome will be assessed using the modified Rankin Scale (mRS; total score range 0-6, higher scores indicate greater disability). Changes from baseline will be analyzed.
Baseline, 3, 6, 12, 18, and 24 months
Change in NIH Stroke Scale (NIHSS) score from baseline
Zeitfenster: Baseline, 3, 6, 12, 18, and 24 months
Neurological deficit severity will be assessed using the National Institutes of Health Stroke Scale (NIHSS; total score range 0-42, higher scores indicate greater neurological deficit). Changes from baseline will be analyzed.
Baseline, 3, 6, 12, 18, and 24 months
Change in Stroke-Specific Quality of Life (SSQOL) score from baseline
Zeitfenster: Baseline, 3, 6, 12, 18, and 24 months
Quality of life will be assessed using the Stroke-Specific Quality of Life (SSQOL) scale (total score range 49-245, higher scores indicate better quality of life). Changes in SSQOL total score from baseline will be evaluated at each follow-up time point.
Baseline, 3, 6, 12, 18, and 24 months
Change in Barthel Index from baseline
Zeitfenster: Baseline, 3, 6, 12, 18, and 24 months
Activities of daily living will be assessed using the Barthel Index (total score range 0-100, higher scores indicate greater independence). Changes in Barthel Index score from baseline will be evaluated at each follow-up time point.
Baseline, 3, 6, 12, 18, and 24 months
Number of participants with recurrent stroke events
Zeitfenster: Up to 24 months
Recurrent stroke events include both ischemic and hemorrhagic stroke occurring after the index stroke. The number of participants experiencing at least one recurrent stroke will be recorded.
Up to 24 months
Number of participants with all-cause mortality
Zeitfenster: Up to 24 months
All-cause mortality will be defined as death from any cause occurring during the study period. The number of participants who die during follow-up will be recorded.
Up to 24 months
Change in tumor necrosis factor-alpha (TNF-α) levels from baseline
Zeitfenster: Baseline, 1 week, 1 month, 3 months, and 24 months
Serum TNF-α levels will be measured to assess inflammatory response. Changes from baseline at each time point will be analyzed.
Baseline, 1 week, 1 month, 3 months, and 24 months
Change in interleukin-1 beta (IL-1β) levels from baseline
Zeitfenster: Baseline, 1 week, 1 month, 3 months, and 24 months
Serum IL-1β levels will be measured as a marker of inflammation. Changes from baseline will be analyzed.
Baseline, 1 week, 1 month, 3 months, and 24 months
Change in cyclooxygenase-2 (COX-2) levels from baseline
Zeitfenster: Baseline, 1 week, 1 month, 3 months, and 24 months
COX-2 expression levels will be measured as part of inflammatory pathway assessment. Changes from baseline will be analyzed.
Baseline, 1 week, 1 month, 3 months, and 24 months
Change in inducible nitric oxide synthase (iNOS) levels from baseline
Zeitfenster: Baseline, 1 week, 1 month, 3 months, and 24 months
iNOS levels will be measured to evaluate inflammatory and oxidative stress responses. Changes from baseline will be analyzed.
Baseline, 1 week, 1 month, 3 months, and 24 months
Number of participants with treatment-emergent adverse events
Zeitfenster: Up to 24 months
Treatment-emergent adverse events (TEAEs) are defined as adverse events occurring after initiation of study treatment. The number of participants experiencing at least one TEAE will be recorded.
Up to 24 months
Number of participants with serious adverse events
Zeitfenster: Up to 24 months
Serious adverse events (SAEs) include events that result in death, are life-threatening, require hospitalization, or result in significant disability. The number of participants experiencing at least one SAE will be recorded.
Up to 24 months
Number of participants who discontinued treatment due to adverse events
Zeitfenster: Up to 24 months
Treatment discontinuation due to adverse events will be recorded as a measure of drug tolerability.
Up to 24 months

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Mitarbeiter

Publikationen und hilfreiche Links

Die Bereitstellung dieser Publikationen erfolgt freiwillig durch die für die Eingabe von Informationen über die Studie verantwortliche Person. Diese können sich auf alles beziehen, was mit dem Studium zu tun hat.

Allgemeine Veröffentlichungen

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Geschätzt)

1. Juni 2026

Primärer Abschluss (Geschätzt)

1. Juni 2030

Studienabschluss (Geschätzt)

1. Dezember 2030

Studienanmeldedaten

Zuerst eingereicht

14. September 2025

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

20. Mai 2026

Zuerst gepostet (Tatsächlich)

22. Mai 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

22. Mai 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

20. Mai 2026

Zuletzt verifiziert

1. Mai 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • KY2025-328-02 (Andere Kennung: Ethics Committee in Clinical Research (ECCR) of the First Affiliated Hospital of Wenzhou Medical University)

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Beschreibung des IPD-Plans

De-identified individual participant data (IPD) will not be publicly shared due to privacy and ethical considerations. However, data may be made available to qualified researchers upon reasonable request, subject to institutional review and data sharing agreements.

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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