Magnetic pulses to the brain could lift bipolar depression
NCT ID NCT06370988
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tests whether a non-invasive brain stimulation technique called intermittent theta-burst stimulation (iTBS) can reduce depression symptoms in people with treatment-resistant bipolar disorder. About 124 participants will receive either real or sham (fake) stimulation daily for 30 days, then be followed for 6 weeks. Researchers will measure changes in depression and mania symptoms to see if the treatment is safe and effective.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- intermittent theta-burst stimulation (iTBS) using a magnetic coil device
- What this could lead to
- If it works, this could offer a new, non-drug option to reduce depression symptoms in people with bipolar disorder who haven't responded to standard treatments.
- What could go wrong
- This is a mid-sized trial testing a device, not a drug, and the effect may be small or no better than placebo. The study is still recruiting, so results are uncertain.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 124 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2024
- Expected to finish
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May 2029
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 65 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria The participant must meet all of the inclusion criteria to eligible for this clinical trial: 1. Must be deemed to have capacity to provide informed consent; 2. Must be an outpatient 3. Have a DSM 5 diagnosis of bipolar disorder (type I or II), current episode depressed confirmed by Mini-International Neuropsychiatric Interview version 7.0.2 (MINI); 4. Age 18-65; 5. failure to achieve a clinical response to ≥1 adequate treatment trial for bipolar depression based on the Antidepressant Treatment History Form - Short Form (ATHF-SF) OR unable to tolerate at least 2 separate inadequate treatment trials for bipolar depression;43 6. moderately severe depression with a score ≥ 15 on the PHQ-9;44 7. not currently experiencing a mixed or manic episode (YMRS ≤10); 8. no increase or initiation of psychotropic medication with intention of treating depressive symptoms in the 4 weeks prior to screening. This excludes targeted treatment of insomnia with trazodone, melatonin, low-dose doxepin \[3-6mg\], low-dose benzodiazepines \[≤2mg lorazepam daily equivalent\], non-benzodiazepine benzodiazepine receptor agonists, or orexin antagonists; 9. able to adhere to the treatment schedule; 10. pass the TMS adult safety screening questionnaire.45 Exclusion Criteria An individual who meets any of the following criteria will be excluded from participation in this clinical trial: 1. have a history of MINI diagnosis of a substance use disorder (other than nicotine and/or caffeine) within the last 3 months; 2. have a concomitant major unstable medical illness; 3. have active suicidal intent (assessed during HRSD-17 Item 3 and SSRS as imminent intent to act on specific plan, confirmed by psychiatric staff); 4. are pregnant or intend to get pregnant during the study; 5. have a lifetime MINI diagnosis of schizophrenia or schizoaffective disorder; 6. have psychotic symptoms within the current episode; 7. have a MINI anxiety disorder, trauma-related disorder, obsessive compulsive disorder, or personality disorder assessed by a study investigator to be primary and/or causing greater impairment than BD-DE; 8. failure of an adequate acute course of ECT as defined by ATHF-SF during the current episode; 9. have received any rTMS before due to potential to compromise blinding of treatment allocation; 10. have any clinically significant neurological disorder (e.g., recent major cerebrovascular accident), or any history of seizure except those therapeutically induced by ECT or with clear precipitant (e.g., febrile seizure of childhood, alcohol withdrawal, etc.); 11. have any intracranial implant (e.g., aneurysm clips, shunts, stimulators,) or any other metal object within or near the head, excluding the mouth, that cannot be safely removed; 12. are participating in psychotherapy for less than 3 months. Patients will be permitted if they have been in stable treatment for at least 3 months prior to study entry, with no anticipated change in the frequency of therapeutic sessions, or focus of therapeutic sessions over the duration of the study; 13. are currently taking lorazepam \>2 mg daily (or equivalent) due to the potential to limit rTMS efficacy; 14. are currently taking any dose of an anticonvulsant due to the potential to limit rTMS efficacy. If anticonvulsants have been discontinued prior to screening, at least 5 half-lives have elapsed until screening to allow sufficient drug clearance; 15. have a non-correctable clinically significant sensory impairment (i.e., cannot hear well enough to cooperate with interview).
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
2 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Centre for Addiction and Mental Health
RECRUITINGToronto, Ontario, M6J 1H4, Canada
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University Health Network
RECRUITINGToronto, Ontario, M5T 2S8, Canada
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