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Not yet recruitingNCT06168175Updated Dec 13, 2023

Feasibility of Conducting a Clinical Trial Assessing Efficacy of Lactate as Adjunctive Therapy in Patients With Major Depressive Disorder

A Phase 2 interventional study of Sodium lactate and Placebo in Major Depressive Disorder, sponsored by Centre Hospitalier Universitaire Vaudois. Not yet recruiting. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2023-12-13.

Sponsored by Centre Hospitalier Universitaire Vaudois · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
46
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

The goal of this clinical trial is to test the efficacy of lactate (a natural substance) in combination with standard antidepressant treatment, in patients hospitalized for a major depressive episode.

The main question[s] it aims to answer are:

  • does lactate diminishes depression severity when administered in combination with antidepressant ?
  • is it feasible to test lactate treatment in a large-scale clinical trial ? Participants will receive lactate intravenously daily (20 min infusion) for 5 days during hospitalisation (together with the standard antidepressant treatment).

Researchers will compare with a group receiving a placebo instead of lactate to see if lactate has antidepressant effects.

Read the detailed description

In case of major depressive disorder (MDD), antidepressant medications are prescribed as standard treatment. The commonly used antidepressants have a delayed onset of therapeutic actions, many side effects and limited efficacy. In this regard, about 30-50% of MDD patients are unresponsive to any currently approved pharmacological treatment, emphasizing the need for novel types of drugs to treat major depression.

Several animal studies have shown that lactate, a substance naturally present in the body, has antidepressant effects.

The aim of this single-center study is to evaluate the feasibility of conducting a future large-scale clinical trial testing the efficacy of "sodium lactate" as an adjunctive treatment to a standardly prescribed antidepressant.

The study is recruiting patients hospitalized for a major depressive episode. Participants are assigned randomly to the "sodium lactate" group or the "placebo" group. The study treatment will be administered intravenously daily (2mmol/kg) for 5 days during hospitalization, in addition to standard antidepressant treatment. Patients will be followed during hospitalization and then on an outpatient basis at 6 and 12 weeks. The therapeutic effect of sodium lactate will be assessed with the MADRS score (depression severity scale) at 1, 2, 3, 6 and 12 weeks. Recruitment, adherence, retention, data completion and blinding maintenance rates will also be assessed to evaluate the feasibility. The effect on anxiety, perceived stress, insomnia, short-term depression remission rate, blood lactate level and length of hospitalization will also be evaluated.

02

Conditions studied

  • Major Depressive Disorder

Keywords

  • Sodium lactate
  • Depression
  • Antidepressant
  • Lactate
03

In context

Depressive Disorder

4,845 studies on the registry are indexed under Depressive Disorder; 514 are open to participants now.

This study's planned enrollment of 46 is below the median of 80 across 3,999 interventional studies indexed under Depressive Disorder.

Browse Depressive Disorder studies →

Lead sponsor

Centre Hospitalier Universitaire Vaudois is the lead sponsor of 203 studies on the registry; 47 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Study consent signed
  • 18 ≤ age ≤ 65 years old
  • Fluent in french
  • Recently (no more than 1 week) hospitalized for a primary diagnosis of MDD
  • Current major depressive episode as defined by DSM-5
  • Current MADRS score ≥18
  • Total number of MDD acute episodes ≤ 3
  • Total number of psychiatric medications ≤ 3 at admission
  • Total number of any medication ≤ 4 at admission
  • No signs or evidence indicating difficult intravenous access
  • Willing to hold a peripheral blood catheter for 5 days

Exclusion criteria

Exclusion Criteria:

  • Bipolar depression
  • History of panic attacks
  • Severe substance use disorders according to DSM-5-TR criteria
  • Conditions predisposing to hypernatremia such as:

    • adrenocortical insufficiency,
    • diabetes type 1 and insulin-dependent type 2
    • extensive tissue injury
  • Known severe renal insufficiency
  • Known hepatic insufficiency (impaired lactate metabolism)
  • Known history of heart failure
  • Known history of Chronnic Obstructive Pulmonary Disease or respiratory failure
  • Known hypersentitivity to lactate
  • Hypernatremia with Na+ > 150 mmol/L (confirmed on 2 blood withdrawals)
  • Blood osmolality > 320 mmol/kg H2O
  • Hyperlactatemia > 2 mmol/l
  • Pregnant or lactating
  • Forbiden medications : Lithium
  • Participation to other clinical trials
  • Any medical conditions that could jeopardize patient's health in case of study participation according to the investigator
  • Inability to give informed consent (without capacity for discernment) as evaluated by the psychiatrist investigator or by by a delegated physician.
05

Study design

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

Study arms

  • Experimental
    Lactate

    Drug: Sodium lactate

  • Placebo comparator
    Placebo

    Drug: Placebo

Interventions

  • DrugSodium lactate

    2 mmol/kg, intravenous, daily for 5 consecutive days

  • DrugPlacebo

    intravenous, daily for 5 consecutive days

06

What researchers measure

Primary outcomes

  1. Feasibility as assessed by the recruitment rate

    % of patients eligible among the informed patients

    Time frame: 12 weeks

  2. Feasibility as assessed by the adherence rate

    % of patients completing the study intervention period among randomized patients

    Time frame: 12 weeks

  3. Feasibility as assessed by the retention rate

    % of drop-outs among randomized patients at 3 weeks, 6 weeks and 12 weeks

    Time frame: 12 weeks

  4. Feasibility as assessed by the data completion rate of the therapeutic effect measures

    % of patients with completed Montgomery Asberg Depression Rating Scale (MADRS) questionnaire at 1, 2, 3, 6 and 12 weeks among randomized patients

    Time frame: 12 weeks

  5. Feasibility as assessed by estimates of the therapeutic effect size on Montgomery Asberg Depression Rating Scale (MADRS) score

    Estimate of mean difference on the change in MADRS score from baseline to week 1, 2, 3, 6 and 12 between patients randomized in lactate arm and in placebo arm, as well as their associated standard deviation.

    Time frame: 12 weeks

  6. Feasibility as assessed by the blinding maintenance rate

    % of patients with sustained blinding at week 1, 2, 3, 6 and 12

    Time frame: 12 weeks

Secondary outcomes

  1. Anxiety

    Generalized Anxiety Disorder - 7 items (GAD-7 score) ; minimum and maximum values : 0 - 21 ; Lower scores mean a better outcome

    Time frame: 12 weeks

  2. Perceived stress

    Perceived Stress Scale (PSS score) ; minimum and maximum values : 0 - 40 ; Lower scores mean a better outcome

    Time frame: 12 weeks

  3. Insomnia

    Insomnia Severity Index (ISI score) ; minimum and maximum values : 0 - 28 ; Lower scores mean a better outcome

    Time frame: 12 weeks

  4. Short term depression remission rate

    Montgomery Asberg Depression Rating Scale (MADRS score \< 7) ; minimum and maximum values : 0 - 60 ; Lower scores mean a better outcome

    Time frame: 12 weeks

  5. Hospitalization duration

    Number of days of hospitalization

    Time frame: 12 weeks

07

Study locations

No study locations are listed for this record.

08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 13, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT06168175
Lead sponsor
Centre Hospitalier Universitaire Vaudois
Collaborators
Fondation de Préfargier
Responsible party
Sylfa Fassassi (Principal Investigator, Centre Hospitalier Universitaire Vaudois) — Principal investigator
First posted
Dec 13, 2023
Start date
Jan 2024 (estimated)
Primary completion
Jan 2028 (estimated)
Completion
Jan 2028 (estimated)
Last update
Dec 13, 2023

Study contacts

Sylfa Fassassi,, MD
Contact
sylfa.fassassi@chuv.ch
+41 21 314 31 11
Pierre Marquet, MD
study chair · Centre Hospitalier Universitaire Vaudois

Oversight

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

Not currently enrolling

This study is not yet recruiting, as verified in Dec 2023. You cannot join it, but the record below documents what was studied.

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