The Antidepressant Effect of Intermittent Theta Burst Stimulation (iTBS)

NCT05516095 | Completed

• 2 other identifiers: 228765HNF1578-21
• Study Type: interventional
• Target: 73
• Locations: 1 country
• Sites: 1

Brief Summary

The present study is a randomized placebo-controlled trial examining the effect of intermittent theta burst stimulation (iTBS) on unipolar depression. iTBS is a form of transcranial magnet stimulation. The anti-depressive effect of two weeks of once- a - day neuronavigated iTBS over the dorsolateral left prefrontal cortex (DLPFC) will be investigated in comparison to sham (placebo) iTBS. Previous studies have shown that iTBS is an effective treatment for reducing symptoms of depression, but it is still unclear why some patients have a strong response to iTBS, whereas others show less or no reduction to test possible factors that can explain the inter-individual response to iTBS. Measures of cognitive functions, structural and functional brain data measured by Magnetic Resonance imaging (MRi), quality of life, sleep quality, general health status, and genetic measures will be obtained to answer the goals of this study. The main hypotheses are: 1) Patients receiving iTBS will display significantly larger reductions in depressive symptoms measured by the Montgomery-Asberg Depression Rating Scale and Becks Depression Inventory II compared to patients receiving sham stimulation. 2) Reduction in depressive symptoms will be significantly associated with a concomitant improvement in executive functions measured by neuropsychological tests. 3) Stronger connectivity at baseline between the DLFPC and the anterior cingulate cortices will be associated with better response to iTBS. 4) Variability in genetic measures will be significantly associated with treatment response to iTBS. 5) Variability in white matter structural measures of the brain will be significantly associated with the anti-depressive response to iTBS. Participants will be recruited prospectively, and the study performed at a single university hospital. After written informed consent is obtained from eligible, volunteering patients, baseline measurements will be administrated, and the patient will be allocated to either sham or active iTBS once a day for 10 consecutive workdays. Four weeks after the last treatment day, the patients will be followed up by phone interviews.

Conditions

Depression; Executive Dysfunction

Keywords

moderate depression; major depression

Outcome Measures

Primary Outcomes (2)

• Montgomery-Asberg Depression Rating Scale.

  Clinician rated depression inventory.

  Up to 4 months.

• Beck's Depression Inventory - II.

  Patient reported depression inventory.

  Up to 4 months.

Secondary Outcomes (6)

• Beck's Anxiety Inventory.

  Up to 4 months.

• Wisconsin Card Sorting Test.

  Up to 2 weeks.

• Delis-Kaplan Executive Function System.

  Up to 2 weeks.

• Brief-A

  Up to 4 months.

• Whodas 2.0

  Up to 4 months.

Study Arms (2)

Active iTBS

ACTIVE COMPARATOR

iTBS will be delivered with 120% of resting motor threshold, triplet 50 Hz bursts repeated at 5 Hz; 2 seconds on and 8 s off, 600 pulses per session with a total duration of 3 min 9 s. Treatment will be provided for 10 days for two consecutive weeks (except Saturdays and Sundays). Each patient will start treatment at the same time between 9 am and 3 pm during the 10-day treatment period.

Device: Transcranial magnet stimulation

Sham iTBS

PLACEBO COMPARATOR

The sham system has an identical look, weight and sound compared to the true coil, and delivers electrical stimulation that can be felt at the skin but without penetrating the skull and thus not inducing any treatment effect. The sham stimulation will be given with the same procedure as the active stimulation; 2 seconds on and 8 s off, 600 pulses per session with a total duration of 3 min 9 s.

Device: Sham Transcranial magnet stimulation

Interventions

Transcranial magnet stimulation DEVICE

Theta burst stimulation, which is a form of Transcranial magnet stimulation, works by inducing focused magnetic field pulses to make durable changes in the activity of brain regions. The magnetic pulses are transferred to the brain through an electromagnetic coil.

Also known as: Theta burst stimulation

Active iTBS

Sham Transcranial magnet stimulation DEVICE

Similar in appearance and give the same sound as the active device, but deliver no magnetic pulse that reach the brain

Also known as: Sham Theta burst stimulation

Sham iTBS

Eligibility Criteria

• Age: 22 Years - 65 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• A MADRS score of =/ \> 20 (moderate depression).
• The current depressive episode must have lasted more than 2 weeks but less than 2 years
• Drug therapy must have been stable for the last three weeks prior to the first treatment day with iTBS and is to be kept stable throughout the study until 4 weeks after the last day of iTBS treatment.
• Patients must volunteer to provide informed consent, be able to follow the treatment schedule and have a satisfactory safety screening for iTBS and MRI.

You may not qualify if:

• The current depressive episode is in the mild range or contrary that the current episode fulfills the criteria for a major depressive episode requiring inpatient treatment and/or electroconvulsive therapy.
• The current depressive episode is clearly triggered by grief or a recent major stressful life event.
• Bipolar disorder.
• Borderline personality disorder.
• Psychotic symptoms the last 6 months.
• Alcohol or substance abuse/addiction in the last 6 months.
• Current eating disorders.
• Obsessive- compulsive disorders.
• Post-traumatic stress disorder.
• Any medical history of seizure.
• Any neurological or neurosurgical pathologies.
• Any current cardiac or systemic disease.
• Metallic prosthetic material or foreign objects in the body (pacemakers, internal cardioverter defibrillator units, insulin pump, prosthetic eye equipment, etc.).
• Previously diagnosed developmental disorder.
• Pregnancy or lactating.

Sponsors & Collaborators

• UiT The Arctic University of Norway: collaborator
• University Hospital of North Norway: lead

Study Sites (1)

University Hospital North Norway

Tromsø, 9038, Norway

Location

Related Publications (1)

• Orbo MC, Gronli OK, Larsen C, Vangberg TR, Friborg O, Turi Z, Mittner M, Csifcsak G, Aslaksen PM. The antidepressant effect of intermittent theta burst stimulation (iTBS): study protocol for a randomized double-blind sham-controlled trial. Trials. 2023 Oct 2;24(1):627. doi: 10.1186/s13063-023-07674-6.

  PMID: 37784199 DERIVED

MeSH Terms

Conditions

Depression; Depressive Disorder, Major

Condition Hierarchy (Ancestors)

Behavioral Symptoms; Behavior; Depressive Disorder; Mood Disorders; Mental Disorders

Study Officials

• Per M Aslaksen, PhD

  UiT The Arctic University of Norway

  PRINCIPAL INVESTIGATOR

• Marte C Ørbo, PhD

  UiT The Arctic University of Norway

  PRINCIPAL INVESTIGATOR

• Ole Grønli, MD, PhD

  University Hospital North Norway

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: QUADRUPLE
• Who Masked: PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
• Masking Details: The randomization will be performed in MatLab (https://se.mathworks.com/products/matlab.html), with the "randperm" command that perform randomization in four permuted blocks to groups and gender in a single operation. The randomization procedure in MatLab will be performed by the Research Department at the University Hospital North-Norway, and they will produce numbered colored envelopes (e.g. pink = female, blue = male) containing number of the coil (e.g. 1= active, 2 = sham) that will be opened by the research assistant who mount the coil before the clinician start the treatment procedure. Thus, neither the clinician nor the patient will know which treatment that is provided, but the patient will be asked to guess their group allocation at the follow-up four weeks after the treatment end, as recommended in recent repetitive transcranial magnetic stimulation (rTMS) guidelines.
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Model Details: Randomized placebo controlled clinical trial

Study Record Dates

• First Submitted: February 14, 2022
• First Posted: August 25, 2022
• Study Start: June 4, 2022
• Primary Completion: June 22, 2025
• Study Completion: December 15, 2025
• Last Updated: January 22, 2026

Record last verified: 2022-06

Data Sharing

• IPD Sharing: Will share
• Shared Documents: SAP, ANALYTIC CODE
• Time Frame: Data used for publications in peer-reviewed journals will be shared after publication at the open data platform used at UiT the Arctic University of Norway.
• Access Criteria: Open for everyone.

Locations

NO (1)