- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT07561528
Electrophysiological Biomarkers and Treatment Response to Accelerated Transcranial Magnetic Stimulation in Patients With Obsessive-Compulsive Disorder (TMS-OCD-EEG)
Investigation of the Relationship Between Electrophysiological Biomarkers and Treatment Response in Patients Diagnosed With Obsessive-Compulsive Disorder Undergoing Transcranial Magnetic Stimulation Therapy
Purpose:
This study aims to evaluate the effectiveness of an accelerated intermittent Theta Burst Stimulation (iTBS) protocol-a non-invasive brain stimulation technique-targeted at the dorsomedial prefrontal cortex (dmPFC) and anterior cingulate cortex (ACC) in patients with treatment-resistant Obsessive-Compulsive Disorder (OCD). Additionally, the study seeks to identify electrophysiological biomarkers (such as EEG microstates and heart rate variability) that may predict which patients are most likely to benefit from the treatment.
Methodology:
The study will include 30 patients aged 18-65 diagnosed with OCD according to DSM-5 criteria who have not responded sufficiently to standard treatments. Participants will undergo an intensive 7-day treatment program consisting of 4 iTBS sessions per day (totaling 28 sessions). Clinical symptoms will be assessed before and after the treatment using standardized scales, including the Yale-Brown Obsessive Compulsive Scale (Y-BOCS), Hamilton Depression Rating Scale (HAM-D), and Hamilton Anxiety Rating Scale (HAM-A). Resting-state EEG measurements and heart rate data will be recorded during and after the sessions to analyze physiological changes.
Goal:
The findings are expected to contribute to the development of personalized neuromodulation protocols and help identify predictors of treatment response for OCD patients.
Studieoversikt
Status
Forhold
Intervensjon / Behandling
Studietype
Registrering (Antatt)
Fase
- Ikke aktuelt
Kontakter og plasseringer
Studiekontakt
- Navn: Sarp Yoldas, MD
- Telefonnummer: +905069898506
- E-post: sarpyoldas@gmail.com
Studiesteder
-
-
Bakirkoy
-
Istanbul, Bakirkoy, Tyrkia (Türkiye), 34153
- Rekruttering
- Cerrahpaşa Tıp Fakültesi Prof. Dr. Murat Dilmener Hastanesi
-
Ta kontakt med:
- Sarp Yoldas, MD
- Telefonnummer: +905069898506
- E-post: sarpyoldas@gmail.com
-
-
Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
- Voksen
- Eldre voksen
Tar imot friske frivillige
Beskrivelse
Inclusion Criteria:
- Being between 18 and 65 years of age.
- Being diagnosed with Obsessive-Compulsive Disorder (OCD) according to DSM-5 criteria.
- Non-responsiveness to at least one Selective Serotonin Reuptake Inhibitor (SSRI) treatment at an adequate dose and duration.
- Having a Y-BOCS score of ≥20 following the initial evaluation.
- No change in the current medications within the last 2 months and a commitment to maintaining stable doses throughout the study.
- Providing informed consent and having no contraindications for TMS.
Exclusion Criteria:
- Severe neurological disorders or neurodegenerative diseases.
- Any condition associated with increased seizure risk
- History of cochlear implants, metal implants in the head and neck area, cardiac pacemakers, deep brain stimulation, or vagus nerve stimulation.
- History of neurosurgical intervention.
- General contraindications for Transcranial Magnetic Stimulation therapy.
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Behandling
- Tildeling: N/A
- Intervensjonsmodell: Enkeltgruppeoppdrag
- Masking: Ingen (Open Label)
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
|---|---|
|
Aktiv komparator: TMS Treatment Arm
|
Accelerated intermittent Theta Burst Stimulation (iTBS) will be delivered using a MagVenture MagPro R30 stimulator with a Cool D-B80 double cone coil. The stimulation is targeted at the dorsomedial prefrontal cortex (dmPFC) and anterior cingulate cortex (ACC), specifically 25.8% anterior of the nasion-inion distance. The treatment will be applied at 100% of the motor threshold, which is determined via the Extensor Hallucis Longus muscle. The protocol consists of an intensive 7-day program with 4 sessions per day, totaling 28 sessions. Each session delivers 1,800 pulses and lasts approximately 9 minutes. Patients will continue their stable dose of Selective Serotonin Reuptake Inhibitors (SSRIs) throughout the study. |
Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) Total Score
Tidsramme: Change from baseline in clinical scales at the end of the 7-day treatment and at follow-up points (1, 3, and 6 months post-treatment)"
|
The Y-BOCS is a 10-item clinician-administered scale used to assess the severity of obsessive-compulsive symptoms.
Each item is rated from 0 to 4. The total score ranges from 0 to 40, where higher scores indicate greater symptom severity (32-40: extreme, 24-31: severe, 16-23: moderate, 8-15: mild, 0-7: subclinical).
|
Change from baseline in clinical scales at the end of the 7-day treatment and at follow-up points (1, 3, and 6 months post-treatment)"
|
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
EEG Microstate Analysis Parameters
Tidsramme: Baseline, Day 7 (after treatment)
|
Resting-state EEG data will be analyzed using the MICROSTATELAB v2.1 extension for EEGLAB focusing on the four canonical microstate classes labeled A, B, C, and D. For each participant, four specific spatio-temporal parameters will be calculated to evaluate neural dynamics.
These include Mean Duration which measures the average lifespan of a specific microstate in milliseconds to represent the stability of neural generators, and Occurrence which measures the average frequency of each microstate per second in Hz to reflect activation tendencies.
Additionally, Time Coverage will be calculated as the percentage of total analysis time during which a specific class is dominant, and Transition Probability will be determined to show the likelihood of one microstate class transitioning into another, providing insight into the sequential activation dynamics of the underlying neural networks.
|
Baseline, Day 7 (after treatment)
|
|
Frontal-Vagal Activity via Heart Rate Deceleration (HRD)
Tidsramme: During each of the 28 iTBS sessions over the 7-day treatment period
|
Heart rate data will be recorded using a Polar H10 sensor during iTBS sessions.
HRD will be calculated as the change in heart rate (beats per minute - bpm) during the stimulation period compared to the pre-stimulation baseline.
Lower heart rate (greater deceleration) is investigated as a predictor of higher fronto-vagal activation and treatment response.
|
During each of the 28 iTBS sessions over the 7-day treatment period
|
Samarbeidspartnere og etterforskere
Sponsor
Publikasjoner og nyttige lenker
Studierekorddatoer
Studer hoveddatoer
Studiestart (Faktiske)
Primær fullføring (Antatt)
Studiet fullført (Antatt)
Datoer for studieregistrering
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Faktiske)
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- 1395891
- 38661 (Annet stipend/finansieringsnummer: İstanbul Üniversitesi-Cerrahpaşa Rektörlüğü, Bilimsel Araştırma Projeleri)
Plan for individuelle deltakerdata (IPD)
Planlegger du å dele individuelle deltakerdata (IPD)?
IPD-deling Støtteinformasjonstype
- STUDY_PROTOCOL
Legemiddel- og utstyrsinformasjon, studiedokumenter
Studerer et amerikansk FDA-regulert medikamentprodukt
Studerer et amerikansk FDA-regulert enhetsprodukt
produkt produsert i og eksportert fra USA
Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .
Kliniske studier på EEG
-
University of PennsylvaniaPåmelding etter invitasjon
-
University of ChicagoPåmelding etter invitasjonHukommelse | EEGForente stater
-
Pusan National University Yangsan HospitalHar ikke rekruttert ennå
-
University of Texas at AustinHar ikke rekruttert ennåEpilepsi | EEG med unormalt langsomme frekvenser | EEG; Paroksysmer, occipital, epilepsi i barndommen | EEG med periodiske abnormiteter | EEG; Spikes, Centrotemporal, Epilepsi of ChildhoodForente stater
-
First Affiliated Hospital of Zhejiang UniversityHar ikke rekruttert ennåOrtopedisk kirurgi | EEG-dataanalyse
-
Chinese PLA General HospitalFullførtAldring | EEG | Desfluran anestesiKina
-
Centre Hospitalier Régional Metz-ThionvilleFullførtMR | Prosedyremessig sedasjon | EEGFrankrike
-
Istanbul Medipol University HospitalScientific and Technological Research Council of Turkey (TÜBİTAK)Fullført
-
National Taiwan University HospitalUkjentSunne fag | EEG-dataanalyseTaiwan
-
All India Institute of Medical Sciences, New DelhiUkjentEEG, psykogene ikke-epileptiske hendelser
Kliniske studier på iTBS TMS
-
University of Southern CaliforniaHar ikke rekruttert ennåOverstadig spiseforstyrrelse
-
BeerYaakov Mental Health CenterFullførtRøyking | Kronisk obstruktiv lungesykdomIsrael
-
Auburn UniversityNational Institute on Drug Abuse (NIDA); Society of Addiction PsychologyRekrutteringCannabisbruksforstyrrelse, alvorligForente stater
-
Riphah International UniversityFullført
-
Hartford HospitalRekruttering
-
Carilion ClinicUkjentAnsiktssmerterForente stater
-
Subha SubramanianRekrutteringMajor depressiv lidelse (MDD)Forente stater
-
Changping LaboratoryRekrutteringDepresjon | Major depressiv lidelse | Alvorlig depresjonKina
-
National Institute of Neurological Disorders and...Fullført