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Azetukalner

Phase 3

Major Depressive Disorder | Small molecule | Psychiatry |Xenon Pharmaceuticals Inc.|Last Updated: Jun 2, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials3
Total Enrollment1,360
FDA Designations
No designations recorded
Clinical Trials (3)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07076407A Randomized Study of Azetukalner Versus Placebo in Major Depressive Disorder (X-NOVA3)PHASE3 RECRUITING 450Jul 8, 2025Jul 1, 2027Jun 2, 202644 United States, Finland +4
NCT06922110An Open-Label Study of Azetukalner in Major Depressive DisorderPHASE3 ENROLLING BY_INVITATION 460Mar 18, 2025Mar 1, 2027Jun 1, 202663 United States
NCT06775379A Randomized Study of Azetukalner Versus Placebo in Major Depressive DisorderPHASE3 RECRUITING 450Dec 20, 2024Oct 1, 2026Oct 22, 202546 United States
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Study Endpoints
Primary Endpoints
Change from baseline in the Hamilton Depression Rating Scale, 17-item (HAMD-17) score at Week 6
Baseline to Week 6

The HAMD-17 consists of 17 items that are used to rate the severity of depression symptoms. Each item is scored in a range of 0 to 2 points or 0 to 4 points, with higher scores indicating a greater degree of depression. The score for each item is summed to compute a total score, which ranges from 0 to 52 points.

Severity and frequency of treatment-emergent adverse events, serious adverse events, adverse events of special interest, and events of clinical interest
From the start of treatment in the open-label extension study through 8 weeks after the last dose
Secondary Endpoints
Change from baseline in the Snaith-Hamilton Pleasure Scale (SHAPS) score at Week 6
Baseline to Week 6
Change from baseline in the Hamilton Depression Rating Scale, 17-item (HAMD-17) score at Week 1
Baseline to Week 1
Change from baseline in the Clinical Global Impression of Severity (CGI-S) score at Week 6
Baseline to Week 6
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
AzetukalnerEXPERIMENTALAzetukalner 20 mg
PlaceboPLACEBO_COMPARATORPlacebo
Azetukalner 20 mgEXPERIMENTAL -
Interventions
NameTypeDescription
AzetukalnerDRUGAzetukalner 20 mg taken orally once a day with food (with the evening meal when possible) for 6 weeks
PlaceboDRUGPlacebo taken orally once a day with food (with the evening meal when possible) for 6 weeks
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Eligibility Criteria
Age Range18 Years — 74 Years
SexALL
Healthy VolunteersNo
Study Sites44

Key Inclusion Criteria: * 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 curren...

Countries:United StatesFinlandPolandRomaniaSlovakiaSpain
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Recent Changes (Last 90 Days)
LOWJun 2, 2026NCT07076407lastUpdatePostDate: changed
LOWJun 2, 2026NCT06922110lastUpdatePostDate: changed
LOWJun 2, 2026NCT07076407lastUpdatePostDate: changed
LOWJun 2, 2026NCT06922110lastUpdatePostDate: changed
LOWJun 2, 2026NCT07076407lastUpdatePostDate: changed
LOWJun 2, 2026NCT06922110lastUpdatePostDate: changed
LOWMay 26, 2026NCT06775379primaryCompletionDate: changed
LOWMay 26, 2026NCT07076407primaryCompletionDate: changed
LOWMay 26, 2026NCT06922110primaryCompletionDate: changed
LOWMay 24, 2026NCT06775379studyFirstPostDate: changed
LOWMay 24, 2026NCT07076407studyFirstPostDate: changed
LOWMay 24, 2026NCT06922110studyFirstPostDate: changed