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An Open-label Study of Azetukalner in Bipolar I or II Depression (X-CEED-OLE)

A Multicenter, Long-term, Open-Label, Safety, Tolerability, and Efficacy Study of Azetukalner in Bipolar I or II Depression

Status
Enrolling by invitation
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07217860
Enrollment
400
Registered
2025-10-20
Start date
2025-10-30
Completion date
2029-08-01
Last updated
2026-09-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bipolar Depression, Bipolar Disorder, Bipolar I Disorder, Bipolar II Disorder

Keywords

Bipolar, XEN1101, Azetukalner

Brief summary

X-CEED-OLE is a Phase 3, multicenter, open-label study to evaluate the long-term safety, tolerability, and efficacy of azetukalner in adult participants who successfully completed an antecendent Phase 3 azetukalner bipolar depression study.

Interventions

Azetukalner 20 mg taken orally once a day with food (with the evening meal when possible) for 52 weeks.

Sponsors

Xenon Pharmaceuticals Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* Participant successfully completed the treatment period in a Phase 3 antecedent study evaluating azetukalner in participants with bipolar depression. * Participant provides written informed consent to participate in the study, is able to understand the procedures and study requirements, and agrees to abide by them. * Participant is willing to comply with the contraception requirements.

Exclusion criteria

* Participant met any of the withdrawal criteria, discontinued study drug early, or was terminated early from an antecedent study. * Participant had any protocol deviations in an antecedent study that, in the opinion of the investigator, would preclude participation in this study. * Participant has any medical condition, personal circumstance, or ongoing AE (from an antecedent study) that, in the opinion of the investigator, exposes the participant to unacceptable risk by participating in the study or prevents adherence to the protocol. * Participant is pregnant, breastfeeding, or planning to become pregnant. * Participant is planning to enter a clinical study with a different investigational drug or planning to use any experimental device for the treatment of any medical condition during the study or within 28 days after completion of this study. * Participant is judged by the investigator to have a significant risk for self-harm or suicidal behavior during their participation in the study or is considered to be an imminent danger to themself or others.

Design outcomes

Primary

MeasureTime frame
Severity and frequency of treatment-emergent adverse events, serious adverse events, adverse events of special interest, and events of clinical interestFrom the start of treatment in the open-label extension study through 8 weeks after the last dose

Secondary

MeasureTime frame
Change from baseline in the Montgomery-Åsberg Depression Rating Scale (MADRS) total score over timeFrom baseline through the active extension treatment (Week 52)
Change in Clinical Global Impression of Severity (CGI-S) score over timeFrom baseline through the active extension treatment (Week 52)
Change from baseline in the Snaith-Hamilton Pleasure Scale (SHAPS) total score over timeFrom baseline through the active extension treatment (Week 52)

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 3, 2026