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Repetitive Transcranial Magnetic Stimulation for People With Etomidate Addiction (SToP-E-rTMS x Etomidate) (SToP-E)

26. Juli 2026 aktualisiert von: The University of Hong Kong

Substance Misuse To Psychiatric Disorders for Etomidate -Repetitive Transcranial Magnetic Stimulation for People With Etomidate Addiction: a 6-month, Double-blind, Randomized, Sham-controlled Trial

The goal of this clinical trial is to learn if high-frequency rTMS works to treat etomidate addiction in adults. It will also learn about the safety and tolerability of rTMS. The main questions it aims to answer are:

  • Does active rTMS reduce craving, amount of etomidate use, frequency of etomidate use, and severity of etomidate use disorder?
  • Does active rTMS improve cognitive biases related to delayed reward discounting and risk sensitivity?
  • What side-effects do participants have when receiving rTMS?

Researchers will compare active rTMS to sham rTMS to see if active rTMS works to treat etomidate addiction.

Participants will:

  • Receive active rTMS or sham rTMS over 4 weeks
  • Complete 20 rTMS sessions in total
  • Visit the clinic for treatment sessions and follow-up assessments
  • Complete assessments of etomidate use, craving, withdrawal symptoms, mood symptoms, cognition, and decision-making

Attend follow-up assessments up to 6 months after baseline

Studienübersicht

Status

Noch keine Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

This is a 6-month, double-blind, randomized, sham-controlled pilot clinical trial evaluating high-frequency repetitive transcranial magnetic stimulation (rTMS) for people with etomidate addiction. Etomidate misuse has become an emerging public health concern, but there is currently no established treatment specifically for etomidate addiction. This study will examine whether active rTMS delivered to the left dorsolateral prefrontal cortex can reduce etomidate craving, use, and dependence severity compared with sham rTMS.

The study will enroll 40 participants with etomidate use disorder. Participants will be randomly assigned in a 1:1 ratio to receive either active rTMS or sham rTMS. Both participants and outcome assessors will be blinded to treatment allocation. The intervention consists of 20 rTMS sessions delivered over 4 weeks, followed by an observation maintenance phase with follow-up assessments up to 6 months from baseline.

The study will assess changes in etomidate use, craving, withdrawal symptoms, dependence severity, anxiety, depression, global cognition, psychomotor speed, and cognitive biases related to delayed reward discounting and risk sensitivity. These assessments will help determine whether rTMS may be a feasible and potentially effective intervention for etomidate addiction and related decision-making processes.

Studientyp

Interventionell

Einschreibung (Geschätzt)

40

Phase

  • Unzutreffend

Kontakte und Standorte

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

Studienkontakt

  • Name: Albert KK Chung
  • Telefonnummer: +85260440993
  • E-Mail: Chungkka@hku.hk

Studienorte

    • Hong Kong
      • Hong Kong, Hong Kong, Hongkong, 000000

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

Akzeptiert gesunde Freiwillige

Nein

Beschreibung

Inclusion Criteria:

  • Able to read and communicate in English and/or Chinese
  • Able to give informed consent and/or able to provide an informed consent from the legal guardian (if applicable)
  • Using etomidate and/or its related analogues as the primary psychoactive substance of abuse
  • Suffering from etomidate addiction as defined by:

    1. Etomidate Use Disorder classified under "Sedative-, Hypnotic-, or Anxiolytic Use Disorder" according to the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR) with severity ≥ 1, or
    2. Harmful Use or Dependence for etomidate classified under "Mental and behavioral disorders due to use of sedatives or hypnotics" according to the International Statistical Classification of Diseases and Related Health Problems 10th Revision (ICD-10), or
    3. Hazardous use, harmful use or dependence classified under "Hazardous use of sedatives, hypnotics or anxiolytics" or "Disorders due to use of sedatives, hypnotics or anxiolytics" according to the Clinical descriptions and diagnostic requirements for International Classification of Diseases 11th Revision (ICD-11) mental, behavioral, and neurodevelopmental disorders.

Exclusion Criteria:

  • Age < 18 years old
  • Unable to read English or Chinese
  • Unable to give informed consent
  • Had been diagnosed with the following disorders including:

    1. Neurodevelopmental Disorders:

  • DSM-5: Intellectual Disabilities, Communication Disorders, Specific Learning Disorder, Autism Spectrum Disorder and Motor Disorders
  • International Statistical Classification of Diseases and Related Health Problems 11th Revision (ICD-11): Disorders of intellectual development (6A00), Developmental speech or language disorders (6A01), Autism spectrum disorder (6A02), Developmental learning disorder (6A03), Developmental motor coordination disorder (6A04), Stereotyped movement disorder (6A06), Primary tics or tic disorders (8A05.0)
  • Other DSM-5 defined Substance Use Disorder greater than moderate in severity (i.e., severity score ≥4)
  • Neurocognitive Disorders (DSM-5, or ICD-11 6D70-72 & 6D80-86) 2. Contra-indicated to undergo rTMS:
  • with electronic and/or magnetic implants (e.g., pacemaker, implantable cardioverter defibrillator [ICD], cerebral shunts, cochlear implant, etc.)
  • with metallic or mechanic fragments (e.g., screws, plates, stents, clips, etc.)
  • pregnant
  • with any known or history of neurological conditions including cerebral vascular accidents (CVA), epilepsy, brain tumor or space occupying lesion, etc.
  • poorly controlled or unstable diabetes mellitus
  • receiving unstable dose(s) of antipsychotics, antidepressants, benzodiazepines and/or anticonvulsants in the past 3 months

Studienplan

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

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Verdreifachen

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Active rTMS
Subjects receive 20 high-frequency rTMS sessions over 4 weeks.
high-frequency rTMS using Magventure TMS system using the Coil Cool-B70 Active/Placebo Bended Butterfly coil is delivered at the dorsolateral prefrontal cortex of consented subjects
Schein-Komparator: Sham rTMS
Subjects receive 20 Sham rTMS sessions over 4 weeks.
Sham rTMS will be delivered using the Coil Cool-B70 Active/Placebo Bended Butterfly coil, which generates a negligible magnetic field. The sham procedure will follow the same schedule as the active rTMS arm.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Change in etomidate craving
Zeitfenster: Baseline, Week 1, Week 4, Month 3, and Month 6
Change in craving measured by the Craving Automated Scale-Substance from baseline to follow-up. Higher scores indicate stronger craving.
Baseline, Week 1, Week 4, Month 3, and Month 6
Change in etomidate withdrawal symptoms
Zeitfenster: Baseline, Week 1, Week 4, Month 3, and Month 6
Change in withdrawal symptoms measured by the Clinical Institute Withdrawal Assessment for Benzodiazepines from baseline to follow-up.
Baseline, Week 1, Week 4, Month 3, and Month 6
Change in amount of etomidate use
Zeitfenster: Baseline, Week 1, Week 4, Month 3, and Month 6
Change in the amount of etomidate use over the past 30 days measured by the Beat Drugs Fund Evaluation Question Set No. 5 and substance use interview from baseline to follow-up.
Baseline, Week 1, Week 4, Month 3, and Month 6
Change in frequency of etomidate use
Zeitfenster: Baseline, Week 1, Week 4, Month 3, and Month 6
Change in the frequency of etomidate use over the past 30 days measured by the Beat Drugs Fund Evaluation Question Set No. 5 and substance use interview from baseline to follow-up.
Baseline, Week 1, Week 4, Month 3, and Month 6
Change in severity of dependence
Zeitfenster: Baseline, Week 1, Week 4, Month 3, and Month 6
Change in severity of dependence measured by the Severity of Dependence Scale from baseline to follow-up. Higher scores indicate greater dependence severity.
Baseline, Week 1, Week 4, Month 3, and Month 6
Change in urine-confirmed etomidate use
Zeitfenster: Baseline, Week 1, Week 4, Month 3, and Month 6
Change in etomidate use status assessed by urine test from baseline to follow-up. Urine testing will be used to assess recent etomidate use and compare biological testing results with self-reported etomidate use.
Baseline, Week 1, Week 4, Month 3, and Month 6

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Change in anxiety symptoms
Zeitfenster: Baseline, Week 1, Week 4, Month 3, and Month 6
Change in anxiety symptoms measured by the Beck Anxiety Inventory from baseline to follow-up. Higher scores indicate more severe anxiety symptoms.
Baseline, Week 1, Week 4, Month 3, and Month 6
Change in depressive symptoms
Zeitfenster: Baseline, Week 1, Week 4, Month 3, and Month 6
Change in depressive symptoms measured by the Beck Depression Inventory-II from baseline to follow-up. Higher scores indicate more severe depressive symptoms.
Baseline, Week 1, Week 4, Month 3, and Month 6
Change in delayed reward discounting
Zeitfenster: Baseline, Week 4, Month 3, and Month 6
Change in delayed reward discounting measured by a delay discounting task from baseline to follow-up. The task assesses preference for smaller immediate rewards versus larger delayed rewards.
Baseline, Week 4, Month 3, and Month 6
Change in risk sensitivity
Zeitfenster: Baseline, Week 4, Month 3, and Month 6
Change in risk sensitivity measured by a risk preference task from baseline to follow-up. The task assesses preference for smaller safe rewards versus larger risky rewards.
Baseline, Week 4, Month 3, and Month 6
Change in global cognitive function
Zeitfenster: Baseline, Week 4, Month 3, and Month 6
Change in global cognitive function measured by the Montreal Cognitive Assessment-Hong Kong Chinese version or English version from baseline to follow-up. Higher scores indicate better global cognitive function.
Baseline, Week 4, Month 3, and Month 6
Change in psychomotor speed
Zeitfenster: Baseline, Week 4, Month 3, and Month 6
Change in psychomotor speed measured by the Digit Symbol Substitution Test from baseline to follow-up. Higher scores indicate better psychomotor speed.
Baseline, Week 4, Month 3, and Month 6

Mitarbeiter und Ermittler

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

Sponsor

Ermittler

  • Hauptermittler: Albert KK Chung, Department of Psychiatry, The University of Hong Kong

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. September 2026

Primärer Abschluss (Geschätzt)

31. August 2028

Studienabschluss (Geschätzt)

31. März 2029

Studienanmeldedaten

Zuerst eingereicht

26. Juli 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

26. Juli 2026

Zuerst gepostet (Tatsächlich)

30. Juli 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

30. Juli 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

26. Juli 2026

Zuletzt verifiziert

1. Juli 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Schlüsselwörter

Andere Studien-ID-Nummern

  • UW 26-263

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Beschreibung des IPD-Plans

This is because of the potential legal consequences to the participants as etomidate abuse in the study locality is considered criminal.

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .