Authorised Therapeutic confirmatory (Phase III) Major Depressive Disorder

A Randomized Study of Azetukalner Versus Placebo in Major Depressive Disorder

EU CTIS ID: 2025-523202-32-00

What this study is testing

To assess the efficacy of 20 mg azetukalner once daily for the treatment of Major Depressive Disorder.

  • Therapeutic confirmatory (Phase III)

A plain-language read of the study's public EU CTIS listing. The study team confirms the details.

Who can take part

You may be able to join if

  • Adults ≥18 and ≤74 years of age and experienced their first major depressive episode (MDE) prior to 50 years of age
  • Body Mass Index (BMI) ≤40 kg/m2
  • Meets the Diagnostic and Statistical Manual of Mental Disorders Fifth Edition Text Revised (DSM-5-TR) criteria for current major depressive disorder and is currently in an MDE, confirmed using the Mini International Neuropsychiatric Interview (MINI)
  • Participant's current MDE has a duration of ≥6 weeks and ≤24 months.

You likely can't join if

  • Participant has a primary diagnosis of a mood disorder other than MDD.
  • Participant is pregnant, breastfeeding, or planning to become pregnant
  • Participant has a history of any of the following: MDD with psychotic or catatonic features; MDD with mixed features; Bipolar I or II disorder; Obsessive-compulsive disorder; Schizophrenia, primary thought disorder, or other psychotic disorder.
  • Participant has a current diagnosis of any of the following: MDD with seasonal pattern; Depression with peripartum onset; Posttraumatic stress disorder; Antisocial or borderline personality disorder (or presence of clinically significant borderline personality traits); Panic disorder and/or agoraphobia; ADHD treated with a psychostimulant, diagnosed during the current MDE, or with unstable symptoms, as judged by the investigator.
  • Participant has a substance (excluding tobacco) or alcohol use disorder within the 12 months prior to screening.
  • Participant has had an active suicidal plan/intent within the 6 months prior to screening, presence of suicidal behavior in the last 2 years, or > 1 suicide attempt > 24 years of age.
See the full eligibility criteria
Who can join
  • Adults ≥18 and ≤74 years of age and experienced their first major depressive episode (MDE) prior to 50 years of age
  • Body Mass Index (BMI) ≤40 kg/m2
  • Meets the Diagnostic and Statistical Manual of Mental Disorders Fifth Edition Text Revised (DSM-5-TR) criteria for current major depressive disorder and is currently in an MDE, confirmed using the Mini International Neuropsychiatric Interview (MINI)
  • Participant's current MDE has a duration of ≥6 weeks and ≤24 months.
What rules you out
  • Participant has a primary diagnosis of a mood disorder other than MDD.
  • Participant is pregnant, breastfeeding, or planning to become pregnant
  • Participant has a history of any of the following: MDD with psychotic or catatonic features; MDD with mixed features; Bipolar I or II disorder; Obsessive-compulsive disorder; Schizophrenia, primary thought disorder, or other psychotic disorder.
  • Participant has a current diagnosis of any of the following: MDD with seasonal pattern; Depression with peripartum onset; Posttraumatic stress disorder; Antisocial or borderline personality disorder (or presence of clinically significant borderline personality traits); Panic disorder and/or agoraphobia; ADHD treated with a psychostimulant, diagnosed during the current MDE, or with unstable symptoms, as judged by the investigator.
  • Participant has a substance (excluding tobacco) or alcohol use disorder within the 12 months prior to screening.
  • Participant has had an active suicidal plan/intent within the 6 months prior to screening, presence of suicidal behavior in the last 2 years, or > 1 suicide attempt > 24 years of age.
  • Participant has a history of non-suicidal self-harm behavior in the 12 months prior to screening.
  • Participant has used antidepressants or other prohibited medications (including benzodiazepines), within the 2 weeks (4 weeks for fluoxetine) or within a period less than 5 times the drug's half-life, whichever is longer, prior to randomization.
  • Participant has a history of non-response to ≥2 antidepressant drugs of adequate dose and duration in the current MDE as determined by the Antidepressant Treatment Response Questionnaire (ATRQ).
  • Participants with medical conditions that may interfere with the purpose or conduct of the study.

The study team makes the final eligibility decision.

Where it's taking place

  • United States

Questions & answers

Do participants get paid in this trial?

This listing doesn't specify compensation. Many trials still reimburse travel or offer a stipend, so it's worth asking the study team when you connect.

Is it free to join, and do I need insurance?

Searching and applying through BridgeMD is free. In clinical trials the study-related treatment and visits are generally provided at no cost to you. You usually don't need insurance to take part - confirm specifics with the study team.

How long does this study last?

The listing doesn't state an exact length. The study team walks you through the schedule and number of visits before you decide to enroll.

Who can join this trial?

This study is enrolling all sexes, 65+ years, 18-64 years. The study team makes the final eligibility decision.

Where is this trial taking place?

Study sites include United States. Enter your location above to see the nearest site and check your eligibility.

Explore other conditions

BridgeMD is an information and trial-matching tool - not medical advice, and not the study sponsor. Details come from EU CTIS; the study team decides eligibility.