A Randomized Study of XEN1101 Versus Placebo in Focal-Onset Seizures

ID#: NCT05614063

Age: 18 years - 66+

Gender: All

Healthy Subjects: No

Study Phase: Phase 3

Recruitment Status: Recruiting

Start Date: November 18, 2022

End Date: June 01, 2025

Contact Information:
Xenon Medical Affairs
1-604-484-3300
Summary: The X-TOLE2 Phase 3 clinical trial is a randomized, double-blind, placebo-controlled study that will evaluate the clinical efficacy, safety and tolerability of XEN1101 administered as adjunctive therapy in focal-onset seizures.
Eligibility:

Inclusion Criteria:

- Be properly informed of the nature and risks of the study and give informed consent in writing, prior to entering the study

- Diagnosis (≥2 years) of focal epilepsy according to the International League Against Epilepsy (ILAE) Classification of Epilepsy (2017). Subject must have had adequate trials of at least 2 ASMs, which were given (and tolerated) at adequate therapeutic doses, without achieving sustained seizure freedom.

- Treatment with a stable dose of 1 to 3 allowable current ASMs for at least one month prior to screening, during baseline, and throughout the duration of the DBP

- Able to keep accurate seizure diaries

Exclusion Criteria:

- Previously documented electroencephalogram which shows any pattern not consistent with focal etiology of seizures.

- History of focal aware non-motor seizures only, non-epileptic psychogenic seizure, primary generalized seizure, developmental and epileptic encephalopathy, including Lennox-Gastaut syndrome.

- Seizures secondary to drug or alcohol use, ongoing infection, neoplasia, demyelinating disease, degenerative neurological disease, metabolic illness, progressive structural lesion, encephalopathy, or progressive central nervous system (CNS) disease.

- History of status epilepticus or repetitive seizures within the 12-month period preceding Visit 1 where the individual seizures cannot be counted.

- History of neurosurgery for seizures <1 year prior to Visit 1, or radiosurgery <2 years prior to enrollment.

- Any medical condition or personal circumstance that, in the opinion of the investigator, exposes the subject to unacceptable risk by participating in the study or prevents adherence to the protocol.