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RecruitingNCT06376734ExpeditionUpdated Jul 16, 2026

Search for Novel Transcranial Magnetic Stimulation (TMS) Targets for Mental Illness

A Phase 2 interventional study of Transcranial magnetic stimulation in Major Depressive Disorder, Obsessive-Compulsive Disorder and Schizophrenia, sponsored by Brigham and Women's Hospital. Recruiting at 2 sites in United States. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2026-07-16.

Sponsored by Brigham and Women's Hospital · Phase 2, Interventional, and Basic science

From the registry’s dates

  • Started Jan 2025; still recruiting 1 year 9 months later.
Phase
Phase 2
Study type
Interventional
Enrollment
180
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

Participants will receive Transcranial Magnetic Stimulation (TMS) at a random location in the left prefrontal cortex, excluding sites that are potentially unsafe. Extensive behavioral testing will be conducted to determine which behaviors are modulated by stimulating which circuits.

Read the detailed description

Patients who meet inclusion criteria for a primary diagnosis of MDD, OCD, GAD, or Schizophrenia (n=90) and consent to treatment will be assigned two random stimulation sites in the left prefrontal cortex and receive 2 days of accelerated iTBS treatment at the first stimulation site. Patients will have a 2 month break before coming back for 2 days of accelerated iTBS treatment at the second stimulation site. Patients with schizophrenia will be offered to participate in a third arm of the trial using a schizophrenia-specific target. This arm will also include fMRI scans and behavioral testing pre- and post- aiTBS. There will be two days (6 hours total) of behavioral testing and MRI scanning before each stimulation session and two days (6 hours total) after each stimulation session. Participants will be given the option of completing the behavioral testing in one day, before and after stimulation sessions. All the patients will receive active stimulation, which will facilitate enrollment and eliminate ethical concerns about placebo treatment in vulnerable patient populations. All participants will be blinded to their target coordinates and scales will be administered by a blinded study staff.

02

Conditions studied

  • Major Depressive Disorder
  • Obsessive-Compulsive Disorder
  • Schizophrenia
  • Generalized Anxiety Disorder
  • Mood Disorders
  • Psychiatric Disorder
  • Mental Disorder
  • Depression, Anxiety

Keywords

  • depression
  • anxiety
  • schizophrenia
  • OCD
  • obsessive-compulsive disorder
  • transcranial magnetic stimulation
  • TMS
  • accelerated TMS
  • accelerated intermittent theta burst stimulation
  • brain stimulation
  • neuromodulation
  • transdiagnostic
  • neuronavigation
  • functional connectivity
  • neuroimaging
  • theta burst stimulation
03

In context

Depressive Disorder, Major

3,041 studies on the registry are indexed under Depressive Disorder, Major; 588 are open to participants now.

This study's planned enrollment of 180 is above the median of 79 across 2,530 interventional studies indexed under Depressive Disorder, Major.

Browse Depressive Disorder, Major studies →

Lead sponsor

Brigham and Women's Hospital is the lead sponsor of 1,267 studies on the registry; 228 are open to participants now.

Of its 116 completed or terminated interventional studies of FDA-regulated products, 65 (56%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age 18-65
  • English proficiency sufficient for , questionnaires/tasks, and treatment
  • Primary diagnosis of one of the following: major depressive disorder (MDD), obsessive-compulsive disorder (OCD), generalized anxiety disorder (GAD), or schizophrenia (determined by focal assessment using the Structured Clinical Interview for )

    • ≥20 on the Beck Depression Inventory for patients with MDD
    • ≥16 on the Beck Anxiety Inventory for patients with GAD
    • ≥16 on the Yale-Brown Obsessive-Compulsive Scale for patients with OCD
    • ≥58 on the Positive and Negative Symptom Scale for patients with schizophrenia
  • Stable psychotropic medication regimen, or remain medication free, for 4 weeks prior to treatment (Medication changes during study enrollment period will be tracked for post hoc analysis).
  • Primary clinician (e.g. psychiatrist, therapist, psychologist, APRN, PA, etc.) responsible for psychiatric care before, during, and after the trial

Exclusion criteria

Exclusion Criteria:

  • Active pregnancy as determined by a urine pregnancy test
  • Cluster B personality disorders (antisocial personality disorder, borderline personality disorder, histrionic personality disorder, narcissistic personality disorder)
  • PTSD with active, symptoms, as determined by clinician
  • Diagnosis of Schizoaffective Disorder, Bipolar Type
  • Recent (within 4 weeks) or concurrent use of rapid-acting antidepressant agent (ketamine/esketamine/ECT)
  • Ferromagnetic metallic implant that would contraindicate receiving TMS or obtaining MRI
  • Any other TMS or MRI safety concerns identified by the clinician
  • Receiving or planning to receive other TMS treatments during course of participation
  • History of:

    • Neurosurgical intervention for mental illness
    • Moderate to severe autism spectrum disorder
    • Intellectual disability
    • Severe cognitive impairment
    • Significant neurological illness (e.g., dementia, Parkinson's, Huntington's, brain tumor, seizure disorder, subdural hematoma, multiple sclerosis)
    • Untreated or insufficiently treated endocrine disorder
    • Eating disorders
    • Treatment with drug or intervention during the study period
  • Current evidence of:

    • Mania or hypomania
    • Active suicidal ideation or a suicide attempt within the past year
    • to either TMS or MRI (e.g., metallic implants, etc.).
    • Current moderate or severe substance use disorder or demonstrating signs of acute substance withdrawal
    • Significantly increased seizure risk as determined by a clinician
  • For participants with schizophrenia:

    • Evidence of impaired capacity to consent, e.g. impaired insight into illness, as deemed by a licensed psychiatrist or psychologist on the study team
    • Hospitalization with psychosis in the past 6 months
  • Positive urine drug screen for illicit substances
  • Existing tinnitus (ringing in the ears)
  • Any other condition deemed by the PI to interfere with the study or increase risk to the participant
Terms in these criteria, in plain language(5)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

DSM diagnostic criteria

The American Psychiatric Association’s manual of mental health diagnoses. DSM-5 (2013, revised as DSM-5-TR in 2022) replaced DSM-IV, and some studies still name the older edition. “Meets DSM criteria for …” means diagnosed by that edition’s diagnostic criteria, usually by a clinician in an interview.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Phase 2
Primary purpose
Basic science
Allocation
Randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
180 participants (estimated)

Study arms

  • Experimental
    TMS to random PFC location 1

    Participants will receive 2 days of accelerated TMS (10 treatments per day) to a random location in the prefrontal cortex.

    Device: Transcranial magnetic stimulation

  • Experimental
    TMS to random PFC location 2

    After a 2-month washout following arm 1, participants will receive another two days of accelerated iTBS treatment at a different random PFC location.

    Device: Transcranial magnetic stimulation

  • Experimental
    TMS to Schizophrenia location

    Patients with schizophrenia will be offered to participate in a third arm of the trial, during which participants will receive 2 days of accelerated iTBS to a schizophrenia-specific target.

    Device: Transcranial magnetic stimulation

Interventions

  • DeviceTranscranial magnetic stimulation

    Accelerated TMS will be provided for 2 days using the same dosing regimen as the FDA-cleared SAINT protocol, ten 9-minute treatments per day.

06

What researchers measure

Primary outcomes

  1. Clustering of multiple behavioral measures

    The primary outcome is that stimulation of different circuits will selectively modify different behavioral clusters. Participants will complete the following phenotyping battery tasks and questionnaires: Q-SCID PANSS SAPS SANS PYRATS CDSS YBOCS CGI ATQ ASI BAI BDI BIS/BAS Claremont Purpose Scale De Jong Gierveld Loneliness Scale Daily Spiritual Experience Scale Emotional Reactivity Scale Flourishing Measures Headache Impact Test HiTOP-Self Report Moral Judgment Scale Pain Screener Personal Relationship with God Scale PSQI Positive and Negative Affect Scale Ruminative Response Scale Self Compassion-Short Form Spiritual Transcendence Scale- Short Form Temporal Experience of Pleasure Scale Values and Beliefs of the American Public Altruistic Decision Task Balloon Analogue Risk Task DSIAT EEfRT MSIT ECR Time perception task TMB toolkit 5min AV recording

    Time frame: through study completion, average of 3 months

07

Study locations

1 of 2 sites recruiting
08

References and documents

Individual participant data

Plan to share: Undecided — De-identified survey response data and/or neuroimaging data may be shared with collaborators for further analysis.

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jan 2025 (actual). Primary completion is estimated for Jun 2029, 52 months after the start.

Of 99 non-industry phase 2 interventional studies under Depressive Disorder, Major, half reached primary completion within 35 months of starting (the median), counting those still running; a quarter within 23 and three quarters within 57. This study's planned 52 months is above that.

Counting every sponsor, half of 195 studies reached it within 22 months; a quarter within 14 and three quarters within 37.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 31, 2024
First posted
Apr 19, 2024
StartActual
Jan 30, 2025
Primary completionEst.
Jun 1, 2029
CompletionEst.
Jun 1, 2030
Last update
Jul 16, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jul 16, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06376734
Responsible party
Shan Siddiqi, MD (Principal Investigator, Harvard Medical School (HMS and HSDM)) — Principal investigator
First posted
Apr 19, 2024
Start date
Jan 30, 2025
Primary completion
Jun 1, 2029 (estimated)
Completion
Jun 1, 2030 (estimated)
Last update
Jul 16, 2026

Study contacts

Emily Aquadro, MD
Contact
expedition@mgb.org
857-307-0294
Shan H Siddiqi, MD
principal investigator · Brigham and Women's

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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