Actively Recruiting

Phase 3
Age: 18Years - 74Years
All Genders
ID07172516

A Phase 3, Randomized, Double-blind, Placebo-Controlled Study to Evaluate the Safety and Effectiveness of Azetukalner in Depressive Episodes of Bipolar I or II Disorder

Led by Xenon Pharmaceuticals Inc. · Updated on 2026-06-03

400

Participants Needed

28

Research Sites

8 weeks

Total Duration

On this page

AI-Summary

What this Trial Is About

Researchers are evaluating the effects of azetukalner in adults diagnosed with bipolar I or II disorder who are currently experiencing a depressive episode, also known as bipolar depression. This Phase 3, multicenter, randomized, double-blind, placebo-controlled study aims to assess the safety and efficacy of azetukalner in this population. Participants must have had their first major depressive episode before age 50 and meet specific diagnostic criteria confirmed by clinical interview. Participants will be randomly assigned to receive either azetukalner 20 mg or a placebo orally once daily with food, preferably with the evening meal, for six weeks. The study has two groups: one receiving the experimental drug and one receiving a placebo, both taken over the same period. The study is designed to keep participants and researchers unaware of the group assignments to ensure unbiased results. Throughout the trial, participants will be evaluated using various measures, including changes in depression severity assessed by the Montgomery-Åsberg Depression Rating Scale (MADRS) at baseline and at week 6, along with other scales at different time points. Safety and response will be monitored regularly during the six-week treatment period. The entire participation period is focused on this treatment phase, with assessments conducted to measure changes in symptoms and overall condition.

CONDITIONS

Brief Title

A Randomized Study of Azetukalner Versus Placebo in Depressive Episodes Associated With Bipolar I or II Disorder (Bipolar Depression)

Who Can Participate

Age: 18Years - 74Years
All Genders

Eligibility Criteria

Eligible

You may qualify if you...

  • Adults aged 18 to 74 years
  • Experienced first major depressive episode before 50 years of age
  • Body Mass Index between 18 and 40 kg/m2
  • Diagnosed with bipolar I or II disorder and currently in a major depressive episode confirmed by Mini International Neuropsychiatric Interview
  • Current major depressive episode lasting between 4 weeks and 12 months
Not Eligible

You will not qualify if you...

  • Diagnosis of any major depressive disorder, including psychotic, catatonia, seasonal pattern, or postpartum depression
  • Any nonbipolar psychiatric diagnosis
  • Substance use disorder (excluding tobacco) within 6 months prior to screening
  • Symptomatic eating disorder within 12 months prior to screening
  • Young Mania Rating Scale (YMRS) score greater than 12 at screening or randomization
  • Hospitalization for mania within 30 days prior to screening
  • Treatment resistance to 2 or more approved medications for current bipolar depressive episode
  • Active suicidal plan or intent within 6 months or suicidal behavior within 12 months prior to screening
  • Self-injurious behavior without intent to die within 12 months prior to screening
  • Use of prohibited medications within 1 week or less than 5 times the drug's half-life before randomization
  • Medical conditions interfering with study conduct
  • Pregnancy, breastfeeding, or planning to become pregnant

AI-Screening

AI-Powered Screening

Complete this quick 3-step screening to check your eligibility

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Your Study Journey

Screening

Duration - 2 to 4 weeks

Participants are screened for eligibility to participate in the trial.

1 visit (in-person)

Treatment

Duration - 6 weeks

Participants take either Azetukalner 20 mg or placebo orally once a day with food for 6 weeks.

Weekly visits for up to 6 weeks

Trial Site Locations

Total: 28 locations

1

Noble Clinical Research

Tucson, Arizona, United States, 85704

Actively Recruiting

2

Woodland International Research Group

Little Rock, Arkansas, United States, 72211

Actively Recruiting

3

Woodland Research Northwest

Rogers, Arkansas, United States, 72758

Actively Recruiting

4

Clinical Innovations Inc

Bellflower, California, United States, 90706

Actively Recruiting

5

ProScience Research Group

Culver City, California, United States, 90230

Actively Recruiting

6

ATP Clinical Research

Orange, California, United States, 92866

Actively Recruiting

7

NRC Research Institute

Orange, California, United States, 92868

Actively Recruiting

8

Clinical Innovations Inc

Riverside, California, United States, 92506

Actively Recruiting

9

PharmaSouth Research, LLC

Coral Gables, Florida, United States, 33146

Actively Recruiting

10

Clinical Neuroscience Solutions, Inc.

Jacksonville, Florida, United States, 32256

Actively Recruiting

11

Central Miami Medical Institute

Miami, Florida, United States, 33125

Actively Recruiting

12

Clinical Neuroscience Solutions, Inc

Orlando, Florida, United States, 32801

Actively Recruiting

13

Synexus Clinical Research, Inc.

Atlanta, Georgia, United States, 30328

Actively Recruiting

14

Atlanta Center for Medical Research

Atlanta, Georgia, United States, 30331

Actively Recruiting

15

CenExel iResearch

Decatur, Georgia, United States, 30030

Actively Recruiting

16

Denali Health Atlanta, LLC

Stone Mountain, Georgia, United States, 30083

Actively Recruiting

17

Advanced Quality Medical Research

Orland Park, Illinois, United States, 60462

Actively Recruiting

18

Psychiatric Care and Research Center

O'Fallon, Missouri, United States, 63368

Actively Recruiting

19

Redbird Clinical Research, LLC

Las Vegas, Nevada, United States, 89119

Actively Recruiting

20

Lumina Clinical Research Center

Cherry Hill, New Jersey, United States, 08002

Actively Recruiting

21

Integrative Clinical Trials LLC

Brooklyn, New York, United States, 11229

Actively Recruiting

22

Neurobehavioral Research Inc

Cedarhurst, New York, United States, 11516

Actively Recruiting

23

DelRicht Research

Charlotte, North Carolina, United States, 28210

Actively Recruiting

24

Lehigh Center for Clinical Research

Allentown, Pennsylvania, United States, 18103

Actively Recruiting

25

Clinical Neuroscience Solutions, Inc

Memphis, Tennessee, United States, 38119

Actively Recruiting

26

Elevate Synapsis, LLC

Atascocita, Texas, United States, 77346

Actively Recruiting

27

Grayline Research Center

Wichita Falls, Texas, United States, 76309

Actively Recruiting

28

Core Clinical Research

Everett, Washington, United States, 98201

Actively Recruiting

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Research Team

X

Xenon Medical Affairs

How is the study designed?

Study Type

INTERVENTIONAL

Masking

QUADRUPLE

Allocation

RANDOMIZED

Model

PARALLEL

Primary Purpose

TREATMENT

Number of Arms

2

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