AzTrials
AzTrials

Treatment Resistant DepressionDDOTTNCT05900271

Dutch-Depression Outcome Trial Comparing 5 Day Multi Daily Neuronavigated Theta Burst Sessions With 6 Weeks rTMS

A study testing rTMS and iTBS in people with Treatment Resistant Depression, run by Amsterdam UMC, location VUmc at 4 sites in Netherlands.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

INTRODUCTION Recent findings from three small studies (total n=59) suggest that three changes in repetitive Transcranial Magnetic Stimulation (rTMS) protocols, called the Stanford Neuromodulation Therapy (SNT) protocol, contribute to extreme high overall remission of 79% in patients with treatment resistant depression… Read more about this study

Who is it for?
Ages 18 to 99 years
Conditions the study is for
Treatment Resistant Depression
What is being tested?
rTMS and iTBS
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
108 participants
Where
4 sitesNetherlands
Study dates
15 Nov 2023to Dec 2027
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 99 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • 18 years of age or older;
  • Sufficient level of spoken and written Dutch;
  • Ability to freely provide written informed consent;
  • Current DSM-5 diagnosis of a depressive episode, ascertained by the Mini International Neuropsychiatry Interview (MINI-S).
  • A Hamilton depression rating score (HDRS) of >16 points: this score will be obtained from the SIGH-ADS, a depression rating scale able to determine the HDRS score and a score for atypical depression.
  • have a treatment resistant depression, defined according to the criteria of Conway, that is, lack of remission for eight consecutive weeks after two different evidence-based treatments anti-depressant medication has to be adequately dosed(7,24).
  • Stable anti-depressant medication 6 weeks prior to study. Benzodiazepines may be used up to a dosage equivalent of 3.0 mg lorazepam, and can be lowered over time during the study based on clinical judgement.

Who cannot join

  • - Bipolar disorder.
  • Current psychotic disorder¸ including psychotic depression, assessed by treating psychiatrist.
  • Suspected dementia, assessed with a dementia screening tool, i.e., the Montreal Cognitive Assessment (MOCA)(25), with a score of less than 20 points, or a clinical suspicion of dementia, or neuroimaging indication for neurodegeneration with a Fazekas > 1 and MTA >1. These cut-offs ensure exclusion of patients with (preclinical) dementia.
  • Active suicidal thoughts and intent to act on it, assessed at the baseline interview and before the start of the trial. This assessment is based on the Columbia suicide severity rating scale, i.e., question 5 is answered positive "Have you started to work out or worked out the details of how to kill yourself? Do you intend to carry out this plan?" (26).
  • Metallic devices implanted above the neck, assessed at the baseline interview.
  • Patients diagnosed with epilepsy, by a neurologist, assessed at the baseline interview.
Show all 9Show fewer
  • Substance abuse 4 weeks prior to the study, including high dosage of benzodiazepine, a dosage equivalent higher than 3.0 mg lorazepam, assessed at the baseline interview.
  • Inability to understand or comply with study requirements as judged by the investigators, assessed at the baseline interview.
  • Pregnancy

Trial locations and contacts

4 sites in 1 country. Contact the study team or a site near you to ask about taking part.

Annemiek Dols, MD PhD contact

0610445878

a.dols@amsterdamumc.nl

Eric van Exel, MD PhD contact

+31204444444

e.vexel@amsterdamumc.nl

Netherlands4 sites, 4 recruiting
  • GGZinGeest

    Amsterdam, North Holland, 1081JC

    Eric van Exel, +31204444444, e.vexel@amsterdamumc.nl

    Recruiting
  • Amsterdam UMC location AMC

    Amsterdam-Zuidoost, North Holland, 1105AZ

    Karel Scheepstra, +31205669111, k.scheepstra@amsterdamumc.nl

    Recruiting
  • Maastricht UMC

    Maastricht

    Bart Rutten, bart.rutten@mumc.nl

    Not yet recruiting
  • Radboud UMC

    Nijmegen, GL, 6525GA

    Philip van Eijndhoven, philip.vaneijndhoven@radboudumc.nl

    Recruiting

Other trials in Netherlands

About this study

Official title: Higher, Faster, Better: Is an Accelerated Intermittent Theta Burst Stimulation Protocol Compared to Standard 10 Hz Repetitive Transcranial Magnetic Stimulation, More (Cost-) Effective in Patients With Treatment-resistant Depression?

INTRODUCTION Recent findings from three small studies (total n=59) suggest that three changes in repetitive Transcranial Magnetic Stimulation (rTMS) protocols, called the Stanford Neuromodulation Therapy (SNT) protocol, contribute to extreme high overall remission of 79% in patients with treatment resistant depression (TRD), whereas remission using a standard 10 Hz rTMS protocol is 25%. The improvement using the SNT protocol is achieved by combining 1) accelerated treatment with multiple sessions per day, 2) applying a higher overall pulse dose of stimulation, using intermittent Theta Burst Stimulation (iTBS), and 3) precise targeting of the region in the left dorsolateral prefrontal cortex (DLPFC), using functional MRI guided neuronavigation.

OBJECTIVE To determine if the SNT protocol is more (cost-) effective compared to standard 10 Hz rTMS in patients with TRD, even though the number of pulses given in both protocols is equal, i.e., 90,000.

Read more

STUDY DESIGN Multicenter randomized controlled trial comparing SNT with standard 10Hz rTMS with a follow-up of 25 weeks.

STUDY POPULATION 108 Patients with TRD (no response to 2 or more evidence-based treatments).

INTERVENTION 50 sessions using the SNT protocol in 5 days. The region of the left DLPFC most anticorrelated with the subgenual anterior cingulate cortex in each participant will be targeted based on subject-specific functional resting state MRI.

COMPARISON 30 standard daily 10 Hz rTMS sessions in six weeks, targeting the left DLPFC based on standard measurement procedures of the skull.

OUTCOME MEASURES

  • Remission, based on the Hamilton depression rating scale
  • Cost effectiveness, based on healthcare resource use
  • Quality of life and positive mental health
  • Tolerability and safety
  • Relapse
  • Description of opportunities and difficulties with regard to implementation

SAMPLE SIZE The investigators will enrol 108 patients (α=0.05, power is 0.80) including adjustment for attrition.

COST EFFECTIVENESS ANALYSIS SNT is faster and possibly more effective than 10Hz rTMS leading to a total cost reduction of 22 million each year considering less expensive healthcare, reduced illness duration and absence from work.

TIME SCHEDULE Within 36 months, the investigators will recruit and treat 108 patients with TRD: each center will recruit 9 patients per year. After the last follow-up assessments, the investigators will finalise the study within 12 months and report the results.

Read the detailed description

Rationale: Novel therapies are crucial for patients with unipolar depression since more than 33% of these patients are medication-resistant. As a consequence, there is a high burden of illness for patients with depression, leading to increased suicide rates, inability to maintain proper work and/or social role functions, and reduced quality of life. A promising novel treatment strategy is an intensive five-day course of intermittent Theta Burst Stimulation (iTBS), a form of transcranial magnetic stimulation (rTMS), which could lead to exceptionally high remission rates (79%) in patients with treatment resistant depression. However, it remains unclear whether this novel treatment strategy is more effective in depressed patients when compared to standard 10Hz rTMS (remission 30%).

Hypothesis: 5-day multi daily neuronavigated iTBS sessions (developed by Stanford University and coined, SNT, i.e., Stanford NeuromdulaTion protocol) are more (cost-) effective than standard 10 Hz rTMS in patients with treatment resistant depression.

Objective: To determine remission of depression and cost effectiveness using the SNT protocol, in patients with treatment resistant depression who did not respond to two or more evidence-based treatments.

Study design: This study comprises a multicentre, two-phase, randomized clinical trial. Phase 1 comprises a randomized controlled trial. In Phase 1, participants will be assigned to one of the two active treatment conditions, and will receive either treatment using the SNT protocol (5 days of 10 sessions/day, resulting in 50 sessions in total 90000 pulses) or standard 10 Hz left sided rTMS, provided once daily during 6 weeks (30 sessions in total, 90000 pulses). Phase 2 comprises three follow-up measurements, one at 5 weeks, one at 10 weeks and one at 25 weeks after the last treatment with SNT or 10 Hz standard rTMS. Finally, participants who were allocated to standard 10 Hz rTMS will be offered SNT after the end of the study (e.g., 25 weeks after the last rTMS session). Patients allocated to SNT can obtain 10 Hz standard rTMS after SNT has been completed.

Study population: Adult patients with unipolar depression who did not respond to two or more evidence-based treatments for depression, in the current depressive episode, aged 18 years and over.

Sample size: Sample size calculations based on differences in remission suggest that a well-powered trial should consist of 108 patients (for a 2-sided test at alpha=0.05 and with power=0.80).

Intervention: 50 sessions using the SNT protocol in 5 days. The subregion of the left DLPFC most anticorrelated with the subgenual anterior cingulate cortex (sgACC) in each participant will be targeted based on patient-specific functional resting state magnetic resonance imaging .

Comparison: 30 standard daily 10 Hz rTMS sessions in six weeks, targeting the left DLPFC based on standard scalp-based measurement procedures.

Being tested
rTMS, iTBS
Keywords
TMS, treatment resistant depression
Medical subject headings
Depressive Disorder, Treatment-Resistant

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • rTMSDevice

    10 Hz repetitive-transcranial-magnetic-stimulation

  • iTBSDevice

    neuronavigated intermittent theta burst transcranial-magnetic-stimulation

Study groups in NCT05900271
Study groupRoleWhat they receive
intermittent theta burst transcranial magnetic stimulation (iTBS)Experimental5-day multi daily neuronavigated intermittent theta burst sessions (developed by Stanford University) and coined, SNT, i.e., Stanford NeuromdulaTion protocol
Receives: Device: iTBS
10 Hz repetitive-transcranial-magnetic-stimulation (rTMS)Active comparator6-weeks standard 10 Hz rTMS
Receives: Device: rTMS

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Remission

    Clinical outcome is remission, which is defined as a score of 7 or lower on the clinician-rated HDRS-17 (17-itemHamilton Depression Rating Scale, scores 0-52 with higher score indicating worse outcome) measured one week after the last treatment session.

    Measured: After 1 week.

Secondary outcomes (5)
  1. Health-related quality of life

    Health-related quality of life determined with the EQ 5D-5L (EuroQol 5 Dimension 5 Level, scores 5-25, with higher scores indicating worse outcome).

    Measured: After 1-, 5-, 10- and 25-weeks.

  2. Self-rated depressive symptoms

    Percentual reduction of depressive symptoms as measured with self-rated HDRS-6 (self-rated 6-item Hamilton Depression Rating Scale, scores 0-18 with higher score indicating worse outcome).

    Measured: After 1-, 5-, 10- and 25-weeks.

  3. Relapse

    Relapse, at 5-, 10- and 25-weeks post-treatment. Relapse is defined as a HDRS-17 (17-item Hamilton Depression Rating Scale, scores 0-52 with higher score indicating worse outcome) total score of 15 or higher for 2 consecutive assessments separated by 5 to 15 days or hospitalization for depression

    Measured: After1-, 5-, 10- and 25-weeks.

  4. Side-effects

    Establish tolerability of the treatment and side effects, of SNT and rTMS.

    Measured: After 1- and 6- weeks.

  5. Remission

    Clinical outcome is remission, which is defined as a score of 7 or lower on the clinician-rated HDRS-17 (17-item Hamilton Depression Rating Scale, scores 0-52 with higher score indicating worse outcome) measured directly after the last treatment session.

    Measured: 5-, 10- and 25-weeks after the last treatment session.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 Jun 2023
  2. Study start15 Nov 2023
  3. Primary completionApr 2027 (estimated)
  4. Study completionDec 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
multicentre, two-phase, randomized clinical trial
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
108 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05900271
Sponsor's protocol ID
10390012110079
Acronym
DDOTT
Status last verified
Aug 2026
First submitted
10 May 2023
Last updated
20 Aug 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Dols A, Biemans T, Coomans C, van Eijndhoven P, Dalhuisen I, van der Werf YD, Vriend C, Gomes ESA, Sack AT, Schuhmann T, Chaudhry M, Arns M, Walters BH, Wijnen B, Zalesky A, Cash R, Blumberger DM, Scheepstra KW, Hoogendoorn AW, van den Heuvel OA, van Exel E; D-DOTT Consortium. Comparison of 5-Day Multidaily Neuronavigated Theta-Burst Sessions With 6-Week Standard Repetitive Transcranial Magnetic Stimulation (the Dutch Depression Outcome Trial): Protocol for a Randomized Controlled Trial. JMIR Res Protoc. 2025 Aug 21;14:e70121. doi: 10.2196/70121.

    PubMed 40840870

Questions about this trial

What is this clinical trial studying?

A study testing rTMS and iTBS in people with Treatment Resistant Depression, run by Amsterdam UMC, location VUmc at 4 sites in Netherlands.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 7 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 20 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 4 sites in Netherlands. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Annemiek Dols, MD PhD (0610445878, a.dols@amsterdamumc.nl), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Remission (time frame: After 1 week.). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05900271, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 20 Aug 2026; AzTrials last refreshed its copy on 2 Nov 2026.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in