ClinicalTrials.gg
RecruitingNCT07569198KET-DBTUpdated Jul 29, 2026

Ketamine With Dialectical Behavioural Therapy (DBT) for Suicidality in Individuals With Treatment-Resistant Depression and Borderline Personality Disorder (KET-DBT)

A Phase 2 interventional study of Ketamine Hydrochloride and Midazolam Hydrochloride in Borderline Personality Disorder (BPD), Treatment-Resistant Major Depressive Disorder and Treatment-resistant Bipolar Depression, sponsored by Joshua Rosenblat. Recruiting at 1 site in Canada. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2026-07-29.

Sponsored by Joshua Rosenblat · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
120
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 24 studies in Borderline Personality Disorder with a site in Canada — 7 open to participants now, 8 under way, none of them phase 3. Borderline Personality Disorder · Canada.

Planned enrollment
5th of 23
120 · median 60
Started
2026
with 4 others
Phase 2
2 of 24
2 open now
Registered
23rd of 24
by date
Lead sponsor
1 of 24
Joshua Rosenblat

Among the 24 studies in Borderline Personality Disorder with a site in Canada, this one is the 5th largest by planned enrollment of the 23 interventional ones that give a count, is one of 5 that started in 2026, is one of 2 in phase 2, and was the 23rd registered.

Borderline Personality Disorder

278 studies on the registry are indexed under Borderline Personality Disorder; 70 are open to participants now.

This study's planned enrollment of 120 is above the median of 70 across 221 interventional studies indexed under Borderline Personality Disorder.

Browse Borderline Personality Disorder studies →

Open to participants now

7 of the 24 studies in Borderline Personality Disorder with a site in Canada are open now.

All 7 open studies →

A study can be open while its sites in Canada have not opened yet or have stopped. Only those recruiting at a site in Canada →

Who these studies take

Of the 49 Borderline Personality Disorder studies recruiting now, 18 (37%) set no upper age limit and 30 (61%) stop at 75 or younger; 8 take children under 18; 11 take healthy volunteers.

This study: 18 Years to 70 Years · all sexes · no healthy volunteers.

The full table on the hub →
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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 24 studies in Borderline Personality Disorder with a site in Canada, or all of them as a file.
02

Study summary

The goal of this clinical trial is to learn if intravenous (IV) ketamine with Dialectical Behavioural Therapy (DBT) reduces suicidal ideation in individuals with suicidality who have been diagnosed with Borderline Personality Disorder and either Major Depressive Disorder or Bipolar Disorder. The main question it aims to answer is:

Does IV ketamine and DBT produce more rapid and robust improvements in suicidal ideation (SI) severity between baseline and Day 35 compared to IV midazolam and DBT, as measured by changes in the Modified Scale for Suicidal Ideation (MSSI) scores ?

Researchers will compare six IV ketamine infusions and DBT to an active placebo (a look-alike substance that mimics some of ketamine's effects and not others) and DBT to see if IV ketamine with DBT is more effective at reducing SI severity.

Participants will:

  • Complete six infusions of either IV ketamine or IV midazolam
  • Take part in 6 months of DBT (includes both weekly one-on-one sessions, and group sessions, starting week 5 of the trial)
  • Visit the hospital for scheduled in-person visits
  • Join a call or videocall for scheduled remote visits
  • Complete a variety of different mood, cognitive and behavioral assessments
03

Conditions studied

  • Borderline Personality Disorder (BPD)
  • Treatment-Resistant Major Depressive Disorder
  • Treatment-resistant Bipolar Depression
  • Major Depressive Disorder (MDD)
  • Bipolar Disorder (BD)
  • Bipolar Disorder I or II
  • Suicidal Ideation

Keywords

  • Dialectical Behavioural Therapy (DBT)
  • ketamine
  • Borderline Personality Disorder
  • Treatment-Resistant Depression
  • Bipolar Disorder (BD)
  • Major Depressive Disorder (MDD)
  • Suicidality
04

Who can participate

Ages eligible
18 Years to 70 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

  1. Adults between the age of 18 to 70, inclusive;
  2. Meets criteria for BPD, as determined by clinical assessment by a psychiatrist or psychologist and confirmed by the International Personality Disorder Examination (IPDE);
  3. Meets criteria for MDD or BD (I or II), currently experiencing a MDE without psychotic features, as diagnosed by a study psychiatrist or psychologist. Diagnosis will be confirmed using the Mini- International Neuropsychiatric Interview (MINI);
  4. Current MDE must be moderate to severe, as determined by the MADRS score >20 with an inadequate response to two or more guideline-concordant treatment trials as defined by the Antidepressant Treatment History Form-Short Form (ATHF- SF);
  5. No changes in pharmacotherapy for MDD/BD in the last month or changes in psychotherapy in the past month;
  6. Baseline SI as shown by two consecutive MSSI scores > 10 two weeks apart.

Exclusion criteria

Exclusion Criteria:

  1. Past or current history of a psychotic disorder as determined by clinical assessment and MINI;
  2. Current or recent (within the past 3 months) manic or hypomanic episode as determined by clinical assessment via YMRS (score > 12) and the MINI;
  3. Meeting criteria for Moderate to Severe Alcohol or substance use disorders currently or within the past 3 months;
  4. Lifetime history of ketamine use disorder or illicit ketamine use.
  5. Acute suicide risk requiring involuntary inpatient treatment under the Mental Health Act (MHA).
  6. Presence of a relative or absolute to ketamine or midazolam, including a drug allergy, lifetime history of stroke, uncontrolled hypertension (Systolic BP > 160 or Diastolic BP > 100), low or labile blood pressure (Systolic BP \< 100 or Diastolic BP \< 60), recent (within the past 6 months) myocardial infarction, severe coronary artery disease (ascertained through participant's medical history), or moderate to severe renal ( scores ≤ 44) or hepatic impairment (A score of ≥ 7);
  7. Currently pregnant or breastfeeding or planning on getting pregnant within the first two months of the trial or planning on getting someone else pregnant within the first two months of trial. Participants who are sexually active must agree to use a highly effective method (please see exhaustive list in Section 3.6.1);
  8. Current use of prohibited concomitant medications, including other forms of ketamine or esketamine, high dose daily benzodiazepines (greater than 4 mg lorazepam equivalent daily) or monoamine oxidase inhibitors;
  9. Currently engaged (or completed within the past year) in DBT treatment. NOTE: Individuals who have received only DBT skills training in the past year will be considered eligible to participate;
  10. Those engaged in other forms of psychotherapy must be willing to discontinue for the duration of the 6-month DBT intervention (standard for DBT). There should be no changes in psychotherapy 30 days prior to baseline (i.e., Screening Visit 2).
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.

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.

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.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

Child-Pugh class

A score of how well the liver works in people with liver disease such as cirrhosis: class A is mild, B moderate and C severe.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
120 participants (estimated)

Study arms

  • Experimental
    Ketamine and Dialectical Behavioural Therapy

    All participants in the trial will receive DBT. DBT will begin prior to ketamine infusions and will continue for 6 months of the trial. There will be individual DBT and also group DBT that will begin in Week 5 of the trial. Participants in this arm will receive six infusions of ketamine over a month. The first two infusions will be dosed at 0.5mg/kg over a period of 40 minutes. For infusions 3 and 4, patients will be flexibly dosed between 0.5 mg/kg to 0.75 mg/kg, depending on clinical response to first two infusions. For infusions 5 and 6, participants will be flexibly dosed between 0.5 mg/kg to 0.85 mg/kg.

    Drug: Ketamine Hydrochloride · Behavioral: Dialectical Behavioral Therapy (DBT)

  • Placebo comparator
    Midazolam and Dialectical Behavioural Therapy

    All participants in the trial will receive DBT. DBT will begin prior to midazolam infusions and will continue for 6 months of the trial. There will be individual DBT and also group DBT that will begin in Week 5 of the trial. Participants in this arm will receive six infusions of midazolam over a month. The first two infusions will be dosed at 0.02 mg/kg over a period of 40 minutes. For infusions 3 and 4, patients will be flexibly dosed between 0.02 mg/kg to 0.03 mg/kg, depending on clinical response to first two infusions. For infusions 5 and 6, participants will be flexibly dosed between 0.2 mg/kg to 0.035 mg/kg.

    Drug: Midazolam Hydrochloride · Behavioral: Dialectical Behavioral Therapy (DBT)

Interventions

  • Participants in this arm will receive six ketamine hydrochloride infusions over a month, with doses ranging between 0.5 mg/kg to 0.85 mg/kg

  • DrugMidazolam Hydrochloride

    Participants in this arm will receive six midazolam hydrochloride infusions over a month, with doses ranging between 0.02 mg/kg to 0.035 mg/kg

  • BehavioralDialectical Behavioral Therapy (DBT)

    All participants in this trial will receive DBT over six months. Eligible participants will begin with weekly individual sessions, followed by the addition of weekly group sessions beginning in week 5 of the trial.

06

What researchers measure

Primary outcomes

  1. Change in suicidal ideation severity using the Modified Scale for Suicidal Ideation (MSSI)

    The MSSI is a clinician administered scale used to assess presence or absence of suicidal ideation as well as intensity of suicidal ideation in the previous 48 hours. It consists of 18 items, with each item scored from 0 to 3. Total scores are summed and severity can be categorized as low (0-3), mild (9-20), or severe (\>21).

    Time frame: From Baseline to Day 35 (Primary Endpoint)

Secondary outcomes

  1. Changes in suicidal ideation severity over a longer period of time using the Modified Scale for Suicidal Ideation (MSSI)

    Evaluating changes in MSSI scores between baseline and Month 6 and between baseline and Month 9. The MSSI is a clinician administered scale used to assess presence or absence of suicidal ideation as well as intensity of suicidal ideation in the previous 48 hours. It consists of 18 items, with each item scored from 0 to 3. Total scores are summed and severity can be categorized as low (0-3), mild (9-20), or severe (\>21).

    Time frame: From Baseline to Month 6 and Month 9

  2. Changes in suicidal behavior (SB) and self-harm (SH) using the Suicide Attempt Self-Injury Interview (SASII)

    The SASII is a semi-structured interview that will measure suicidal behavior and self-harm. The SASII is used to collect details of the topography, intent, medical severity, social context, precipitating and concurrent events, and outcomes of non-suicidal self-injury and suicidal behavior during a target time period (in this trial, the target time period will be 'past 3 months').

    Time frame: From Baseline to Months 3, 6, and 9

  3. Changes in suicidal behavior (SB) and self-harm (SH) using the Lifetime Suicide Attempt Self-Injury Interview (L-SASII)

    The L-SASII will be administered at baseline to obtain a count of lifetime history of suicide attempts and non-suicidal self-injury.

    Time frame: From Baseline to Months 3, 6, and 9

  4. Changes in depression severity using the Montgomery Asberg Depression Rating Scale (MADRS)

    The MADRS is a clinician-rated scale measuring depression severity. It consists of 10 items, each scored from 0 (normal) to 6 (severe), for a total possible score of 60. A higher score is indicative of greater depressive severity.

    Time frame: From Baseline to Day 35 (Primary Endpoint), Month 6 and Month 9

  5. Changes in personality psychopathology evaluated using the Borderline Symptom List-23 (BSL-23)

    Changes in borderline personality disorder symptom severity and general personality psychopathology will be evaluated using the BSL-23, self-report assessment. This scale assesses a list of 23 problems on a scale of 0-4.

    Time frame: From Baseline to Day 35 (Primary Endpoint), Month 6 and Month 9

  6. Changes in personality psychopathology using Level of Personality Functioning Scale (LPFS)

    Changes in borderline personality disorder symptom severity and general personality psychopathology will be assessed using the LPFS, an 80-item self-report assessment. Items are rated on a scale from 1 to 4, with 1 indicating "totally false, not true at all" and 4 indicating "very true".

    Time frame: From Baseline to Day 35 (Primary Endpoint), Month 6 and Month 9

  7. Changes in personality psychopathology using the Symptom-Checklist-90-Revised (SCL-90-R)

    Changes in borderline personality disorder symptom severity and general personality psychopathology will be assessed using the SCL-90-R, a 90-item self-report assessment.

    Time frame: From Baseline to Day 35 (Primary Endpoint), Month 6 and Month 9

  8. Changes in anxiety as measured by the Generalized Anxiety Disorder-7 (GAD-7)

    The GAD-7 is a brief self-report measure of generalized anxiety. It consists of 7 items rated from 0 ('not at all sure') to 3 ('nearly every day').

    Time frame: From Baseline to Day 35 (Primary Endpoint), Month 6 and Month 9

  9. Safety and tolerability evaluated by Adverse Events

    Safety and tolerability will be evaluated by acute and sub-acute treatment-emergent adverse events using standardized adverse effects monitoring.

    Time frame: Across 9 Months

  10. Safety and tolerability measured by using the Clinician Administered Dissociative Symptom Scale (CADSS)

    Safety and tolerability will be evaluated using CADSS. It is a clinician administered instrument for the measurement of present-state dissociative symptoms. It is a 27-item scale with 19 subject-rated items and 8-items scored by an observer.

    Time frame: Across 9 months

  11. Safety and tolerability evaluated by the Brief Psychiatric Rating Scale - Positive Symptom Subscale (BPRS-PS)

    The BPRS is a clinician-administered scale that measures positive symptoms, general psychopathology, and affective symptoms to measure psychopathology severity. The positive symptoms subscale will be administered, which measures symptoms commonly seen in psychosis, including unusual thought content, conceptual disorganization, hallucinatory behaviour, and grandiosity.

    Time frame: Across 9 months

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Start is estimated for Jul 2026; primary completion for Jan 2029, 30 months later.

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

Registered
Apr 13, 2026
First posted
May 6, 2026
StartEst.
Jul 16, 2026
Primary completionEst.
Jan 2029
CompletionEst.
Aug 2029
Last update
Jul 29, 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 29, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07569198
Lead sponsor
Joshua Rosenblat
Responsible party
Joshua Rosenblat (Doctor, University Health Network, Toronto) — Sponsor-investigator
First posted
May 6, 2026
Start date
Jul 16, 2026 (estimated)
Primary completion
Jan 2029 (estimated)
Completion
Aug 2029 (estimated)
Last update
Jul 29, 2026

Study contacts

Diana Orsini
Contact
ket.dbt@uhn.ca
437-882-9458
Deep Grewal
Contact
actu@uhn.ca
Joshua D. Rosenblat, MD, MSc
principal investigator · Toronto Western Hospital, Psychiatry

Oversight

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

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Studies of the drug tested here: Ketamine

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