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A Randomized, Double-blind, Placebo-Controlled, Multicenter Study to Evaluate the Safety, Tolerability, and Efficacy of XEN1101 as Adjunctive Therapy in Focal-Onset Epilepsy, With an Open-label Extension

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-508681-15-00
Acronym
XPF-008-201
Enrollment
182
Registered
2024-08-22
Start date
2019-05-28
Completion date
Unknown
Last updated
2026-01-16

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

Conditions

Adult focal (partial onset) epilepsy

Brief summary

1. Median percent change in monthly (28 days) focal seizure frequency from baseline to DBP for XEN1101 versus placebo., 2. Severity and frequency of associated AEs/SAEs, clinically significant changes in clinical laboratory findings and/or 12-lead ECG, increase in suicide risk as assessed by the C-SSRS Scale including increase in suicidal thoughts or an attempt, clinically significant changes in vital signs including blood pressure, pulse, or weight, and clinically significant changes in urological symptoms including retention as measured by the AUA-SI in the DBP.

Detailed description

3. Responders are defined as subjects experiencing ≥50% reduction in monthly (28 days) focal seizure frequency from baseline compared to DBP., 4. Percent change from baseline in weekly focal seizure frequency for each week in the DBP., 5. CGI-C and PGI-C scores during the DBP.

Interventions

DRUGXEN1101 placebo

Sponsors

Xenon Pharmaceuticals Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
1. Median percent change in monthly (28 days) focal seizure frequency from baseline to DBP for XEN1101 versus placebo., 2. Severity and frequency of associated AEs/SAEs, clinically significant changes in clinical laboratory findings and/or 12-lead ECG, increase in suicide risk as assessed by the C-SSRS Scale including increase in suicidal thoughts or an attempt, clinically significant changes in vital signs including blood pressure, pulse, or weight, and clinically significant changes in urological symptoms including retention as measured by the AUA-SI in the DBP.

Secondary

MeasureTime frame
3. Responders are defined as subjects experiencing ≥50% reduction in monthly (28 days) focal seizure frequency from baseline compared to DBP., 4. Percent change from baseline in weekly focal seizure frequency for each week in the DBP., 5. CGI-C and PGI-C scores during the DBP.

Countries

Germany, Italy, Spain

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026