← Eichor
Study identifier: NCT05667142 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

A Study to Evaluate XEN1101 as Adjunctive Therapy in Primary Generalized Tonic-Clonic Seizures

Condition: Primary Generalized Tonic-Clonic Seizures  ·  Sponsor: Xenon Pharmaceuticals Inc.

PhasePhase 3
Planned participants160
Who can joinAll sexes, 12 Years to no upper limit
Healthy volunteersNo

About this study

This is a Phase 3, multicenter, randomized, double-blind, placebo-controlled study to evaluate the clinical efficacy, safety, and tolerability of XEN1101 administered as adjunctive treatment in primary generalized tonic-clonic seizures (PGTCS).

This description comes directly from the study's public registry record.

Talk to the study team

Xenon Medical Affairs  ·  1-604-484-3300  ·  XenonCares@xenon-pharma.com

Always discuss trial participation with your own doctor first.

Locations (138)

University of Alabama - Strada Patient Care Center, NeurologyMobile, Alabama, United StatesRecruiting
XenosciencePhoenix, Arizona, United StatesRecruiting
University of Arizona - Health Science CenterTucson, Arizona, United StatesRecruiting
University of Arkansas for Medical SciencesLittle Rock, Arkansas, United StatesRecruiting
Brain Science Research InstituteLos Angeles, California, United StatesRecruiting
University of California, Irvine - Health Neurology ServicesOrange, California, United StatesRecruiting
University California, Davis Clinical & Translation Science Center Clinical Research (CCRC)Sacramento, California, United StatesWithdrawn
University of Colorado Anschutz Medical CampusAurora, Colorado, United StatesRecruiting
Mayo Clinic FloridaJacksonville, Florida, United StatesRecruiting
Serenity Research Center, LLCMiami, Florida, United StatesRecruiting
Research Institute of Orlando, LLCOrlando, Florida, United StatesTerminated
Panhandle Research and Medical ClinicPensacola, Florida, United StatesRecruiting

+ 126 more locations — full list on the registry record.

Follow this study

Get one email when the public record changes — results posted, or the study's status changes. Nothing else, ever.

We email about this public record only. Unsubscribe anytime with one click. Never medical advice.

Is this your study? This page was generated automatically from the public registry record. Sponsors can claim it — free — to add branding and verified contact routing. Claim this page →

This page is independently generated by Eichor from the public ClinicalTrials.gov record and re-synced daily. It is not the sponsor's official website unless claimed. Nothing here is medical advice; eligibility is always determined by the study team — talk to your own doctor first.

Source record: clinicaltrials.gov/study/NCT05667142