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Major Depressive EpisodePhase 3MOODBOOSTERNCT06508710

Early Effects of Ketamine vs Placebo With Venlafaxine in Severe Depression Patients

A Phase 3 study testing Ketamine in people with Major Depressive Episode, run by Assistance Publique - Hôpitaux de Paris at 4 sites in France.

Recruiting

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

Sites and contacts
Official record
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Trial summary

Unipolar major depressive disorder is the leading cause of disability worldwide. The most commonly used treatments for major depressive episodes (MDE) are antidepressant medications. However, they have limited efficacy and their onset of action is long, ranging between 2 to 6 weeks. Read more about this study

Who is it for?
Ages 18 to 65 years
Conditions the study is for
Major Depressive Episode
What is being tested?
Ketamine
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
60 participants
Where
4 sitesFrance
Study dates
20 Oct 2024to Apr 2026
Phase
Phase 3
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 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Current MDE in the context of unipolar major depressive disorder (DSM-5 criteria), hospitalized (open care) for this episode, with a minimum HDRS score of 24 and in the context of an indication for the introduction of venlafaxine treatment.
  • Patient aged between 18 and 65.
  • Signed free and informed consent
  • Membership of a social security scheme
  • For women of childbearing age, effective contraception throughout study participation.* (*Combined hormonal contraception (containing estrogen and progestin) associated with ovulation inhibition: (oral, intravaginal, transdermal), Progestin-only hormonal contraception associated with ovulation inhibition: (oral, injectable, implantable), Intrauterine device (IUD), Hormonal intrauterine system (IUS), Bilateral tubal occlusion, Vasectomized partner, Sexual abstinence.)

Who cannot join

  • Criteria relating to associated pathologies entailing particular risks: pharmaco-resistant CDE (failure of at least two properly conducted treatments with two different antidepressant treatment classes), CDE with psychotic features, psychotic disorder, bipolar disorder, current (<1 month) substance use disorder (excluding tobacco).
  • Liver impairment (AST and/or ALT > 3 ULN, PAL and/or GGT and/or bilirubin > 2 ULN).
  • Severe renal insufficiency (GFR <30ml/min with Cockcroft's formula).
  • Bradycardia less than 55 beats per minute.
  • Contraindication to ketamine : Hypersensitivity to active substance or excipients, comatose state, central nervous system (CNS) depression, Parkinson's disease, Lewy body dementia, progressive supranuclear palsy, known prolongation of the QTc interval (>450ms for men and >470ms for women) or congenital long QT syndrome, recent acute myocardial infarction, uncompensated heart failure, history of ventricular arrhythmias or torsades de pointes, uncorrected hypokalemia (K+ < 3. 5 mmol/l), epilepsy, uncontrolled hypertension, porphyria, history of stroke (CVA), intracranial hypertension.
  • Contraindication to venlafaxine (hypersensitivity to venlafaxine or excipients, are hereditary conditions of fructose intolerance, glucose-galactose malabsorption syndrome, or sucrase-isomaltase deficiency, unstable hypertension, no indication for venlafaxine treatment in clinician's opinion due to ineffectiveness or tolerability of previous venlafaxine treatment).
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  • Current or previous treatment with venlafaxine or ketamine in the month prior to study inclusion.
  • Need to maintain another antidepressant, MAOI, Millepertuis or benzodiazepines (cyamemazine is permitted). Or potential drug interactions in case of recent cessation of these treatments (based on the Summary of Product Characteristics (SmPC) of the respective medication(s) and their half-life).
  • Any other unspecified reason (clinically significant illness or anomaly) which, in the opinion of the investigator or the sponsor, could compromise the safety of the participant.
  • Pregnant or breast-feeding patients (women of childbearing potential must have a negative urine or blood test for human chorionic gonadotropin prior to trial entry). Planned pregnancy within three months of enrolment
  • Adult under guardianship, curatorship or safeguard of justice
  • Participating in other interventional research involving the human body or within the exclusion period following previous research involving the human body, if applicable.
  • Social insurance
  • Additional criteria for inclusion in the ancillary study :
  • Contraindications to [11C]UCB-J PET-MRI
  • Absolute contraindications: Pacemaker or neurosensorial stimulator or implantable defibrillator; clip on a brain aneurysm or vascular malformation; intraocular or intracerebral ferromagnetic foreign body; prostheses or objects or mobile ferromagnetic metal fragments; cochlear implants; peripheral stimulator; neurosurgical ventriculoperitoneal shunt valves; automated injection device such as insulin pump, glucose sensor; permanent eyelid or lip makeup; non-removable piercing; claustrophobia.
  • Relative contraindications: Dental prostheses and orthodontic material; certain intrauterine devices; certain tattoos; certain transdermal patch implants; certain metal implants far from the examined area. (The investigator physician and/or radiology operator will always conduct a precise questionnaire before the examination to ensure perfect safety and absence of MRI danger)

Trial locations and contacts

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

France4 sites, 3 recruiting
  • EPS Barthélémy Durand

    Étampes, 91152

    christian trichard, 01.69.46.86.66, Christian.Trichard@eps-etampes.fr

    christian trichard

    Not yet recruiting
  • Psychiatry unit

    Le Kremlin-Bicêtre, France, 94270

    Romain COLLE, MD - PHD, +33145212524, romain.colle@aphp.fr

    Romain Colle, MD-PHD

    Recruiting
  • Bicetre Hospital - CRC

    Le Kremlin-Bicêtre, 94250

    laurent becquemont, 01.45.21.74.51, laurent.becquemont@aphp.fr

    laurent becquemont

    Not yet recruiting
  • CEA/SHFJ

    Orsay, 94401

    Active, not recruiting

Other trials in France

About this study

Official title: Early Efficacy of Ketamine Compared With Placebo as Adjunctive Therapy With Venlafaxine in Severely Unipolar Depressed Inpatients

Unipolar major depressive disorder is the leading cause of disability worldwide. The most commonly used treatments for major depressive episodes (MDE) are antidepressant medications. However, they have limited efficacy and their onset of action is long, ranging between 2 to 6 weeks. During this period, hospitalization can become necessary, especially for severe MDE. It is crucial to improve the early effectiveness of treatments for these patients in order to alleviate their suffering, limit complications (suicidal risk), and reduce hospitalization durations (approximately 1000 euros per day). The efficacy of intravenous ketamine has been demonstrated in pharmaco-resistant depression but remains to be proven in non-pharmaco-resistant severe MDE. Additionally, PET imaging using [11C]UCB-J, which allows the in vivo study of synaptic density in the human brain, has shown significant decreases in synaptic density in unipolar patients with severe MDE. Furthermore, a single ketamine infusion was found to enhance synaptogenesis

Being tested
Ketamine, Placebo
Keywords
depression, ketamine, synaptogenesis
Medical subject headings
Depression

What participants receive

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

  • KetamineDrug

    Also called Ketamine+Venlafaxine

    Patients randomized in this group will receive an intravenous ketamine in addition to venlafaxine for one week (on Days 1, 4 and 7)

  • PlaceboDrug

    Also called Placebo+Venlafaxine

    Patients randomized in this group will receive an intravenous placebo in addition to venlafaxine for one week (on Days 1, 4 and 7)

Study groups in NCT06508710
Study groupRoleWhat they receive
Ketamine GroupExperimentalThe patient will receive 3 doses of intravenous ketamine (0,50mg/kg) in addition to the usual venlafaxine treatment
Receives: Drug: Ketamine
Placebo groupPlacebo comparatorThe patient will receive 3 doses of intravenous placebo (50mL of NaCl 9‰) in addition to the usual venlafaxine treatment
Receives: Drug: Placebo

What is being measured

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

  1. the early efficacy on depressive symptomatology

    Evolution of the total score of the Hamilton Depression Rating Scale (HDRS 17 items: scale items are rated from 0 to 2 or from 0 to 4 and the score ranges from 0 to 52) after 7 days of treatment by venlafaxine The HDRS scale will be assessed by a senior psychiatrist or psychologist trained in administering the scales, following a psychiatric interview

    Measured: at day 0 and day 7

Secondary outcomes (20)
  1. The efficacy of ketamine on HDRS overall score

    To compare the efficacy of ketamine as adjunctive therapy, after the early adjunctive treatment phase, and placebo, by assessing changes in overall score obtained on the HDRS 17-items.

    Measured: at day 1,4,7,14, 28 and 42 following the initiation of treatment by venlafaxine

  2. The efficacy of Ketamine on HDRS response rate

    To compare the efficacy of ketamine as adjunctive therapy, after the early adjunctive treatment phase, and placebo, by assessing HDRS response rate (improvement of 50% or more in the overall HDRS score) between groups

    Measured: at day 1,4,7,14, 28 and 42 following the initiation of treatment by venlafaxine

  3. The efficacy of Ketamine on HDRS remission rate

    at day 1,4,7,14, 28 and 42 following the initiation of treatment by venlafaxine

    Measured: To compare the efficacy of ketamine as adjunctive therapy, after the early adjunctive treatment phase, and placebo, by assessing remission rate (HDRS 17 items ≤ 7) between groups

  4. The efficacy of ketamine on BDI overall score

    To compare the efficacy of ketamine as adjunctive therapy, after the early adjunctive treatment phase, and placebo, by assessing changes in overall score obtained on the short form of the Beck Depression Inventory (BDI)

    Measured: at day 1,4,7,14, 28 and 42 following the initiation of treatment by venlafaxine

  5. The efficacy of ketamine on CGI scale

    To compare the efficacy of ketamine as adjunctive therapy, after the early adjunctive treatment phase, and placebo, by assessing changes in Clinical Global Impression (CGI) scale

    Measured: at day 1,4,7,14, 28 and 42 following the initiation of treatment by venlafaxine

  6. Duration of hospitalization

    Evaluate whether ketamine as adjunctive therapy reduces the length of hospital stay, noting the number of days spent in hospital (including re-hospitalization) The discharge from hospitalization will be decided by the treatment-blinded clinician responsible for the patient

    Measured: 42 days

  7. Reduction of suicidal ideation

    Evaluate whether adjunctive ketamine reduces early suicidal ideation, by assessement of overall Columbia-Suicide Severity Rating Scale (C-SSRS) score, after 7 days of treatment by venlafaxine

    Measured: at day 0 and day 7

  8. Clinical improvement on HDRS overall score

    Evaluate whether ultra-early improvement (at D1 or D4 of treatment by venlafaxine) predicts clinical improvement at D7, D14, D28 and D42 by tracking changes in overall score obtained on the 17-item Hamilton Depression Rating Scale (HDRS)

    Measured: at day 7, 14, 28 and 42

  9. Clinical improvement on HDRS response rate

    Evaluate whether ultra-early improvement (at D1 or D4 of treatment by venlafaxine) predicts clinical improvement at D7, D14, D28 and D42 by tracking HDRS response rate (improvement of 50% or more in the overall HDRS score)

    Measured: at day 7, 14, 28 and 42

  10. Clinical improvement on HDRS remission rate

    Evaluate whether ultra-early improvement (at D1 or D4 of treatment by venlafaxine) predicts clinical improvement at D7, D14, D28 and D42 by tracking remission rate (HDRS 17 items ≤ 7)

    Measured: at day 7, 14, 28 and 42

  11. Clinical improvement on BDI overall score

    Evaluate whether ultra-early improvement (at D1 or D4 of treatment by venlafaxine) predicts clinical improvement at D7, D14, D28 and D42 by tracking changes in overall score obtained on the short form of the Beck Depression Inventory (BDI)

    Measured: at day 7, 14, 28 and 42

  12. Clinical improvement on CGI scale

    Evaluate whether ultra-early improvement (at D1 or D4 of treatment by venlafaxine) predicts clinical improvement at D7, D14, D28 and D42 by tracking changes in Clinical Global Impression (CGI) scale

    Measured: at day 7, 14, 28 and 42

  13. Tolerance on blood pressure

    Tolerance will be assessed according to CTCAE grade (version 5.0), with special monitoring of the effects of ketamine during and up to 40 minutes post-infusion of treatment or placebo on blood pressure

    Measured: Day 1, 4, 7

  14. Tolerance on heart rate

    Tolerance will be assessed according to CTCAE grade (version 5.0), with special monitoring of the effects of ketamine during and up to 40 minutes after infusion of treatment or placebo on heart rate.

    Measured: Day 1, 4, 7

  15. Tolerance on respiratory rate

    Tolerance will be assessed according to CTCAE grade (version 5.0), with special monitoring of the effects of ketamine during and up to 40 minutes after infusion of treatment or placebo on respiratory rate

    Measured: Day 1, 4, 7

  16. Tolerance on nausea and vomiting

    Tolerance will be assessed according to CTCAE grade (version 5.0), with special monitoring of the effects of ketamine during and up to 40 minutes after infusion of treatment or placebo on nausea/vomiting

    Measured: Day 1, 4, 7

  17. Tolerance on dissociation

    Tolerance will be assessed according to CTCAE grade (version 5.0), with special monitoring of the effects of ketamine during and up to 40 minutes after infusion of treatment or placebo on dissociation

    Measured: Day 1, 4, 7

  18. Tolerance on headaches

    Tolerance will be assessed according to CTCAE grade (version 5.0), with special monitoring of the effects of ketamine during and up to 40 minutes after infusion of treatment or placebo on headaches

    Measured: Day 1, 4, 7

  19. The consumption of anxiolytic treatments

    cumulative consumption in mg of cyamemazine will be recorded over the entire study period

    Measured: During all the study

  20. Biomarkers

    Identify biomarkers predictive or associated with the efficacy of venlafaxine associated with ketamine

    Measured: Day 1 and 14

Timeline

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

  1. First posted18 Jul 2024
  2. Study start20 Oct 2024
  3. Primary completionMar 2026 (estimated)
  4. Study completionApr 2026 (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 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
60 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06508710
Sponsor's protocol ID
APHP220668
Other IDs
2023-506597-12-00, 2023
Acronym
MOODBOOSTER
Status last verified
Dec 2024
First submitted
15 Jul 2024
Last updated
3 Sep 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Ketamine in people with Major Depressive Episode, run by Assistance Publique - Hôpitaux de Paris at 4 sites in France.

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 5 inclusion and 17 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 3 Sep 2025. 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 France. 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. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

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 Romain COLLE (+33145212524, romain.colle@aphp.fr), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

the early efficacy on depressive symptomatology (time frame: at day 0 and day 7). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 3 Sep 2025.

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