A Study to Evaluate the Safety, Tolerability and Efficacy of XEN1101 in Major Depressive Disorder (X-NOVA)

Xenon Pharmaceuticals

Status and phase: Completed; Phase 2

Conditions: Major Depressive Disorder

Treatments: Drug: XEN1101 20 mg; Drug: XEN1101 10 mg; Drug: Placebo

Study type: Interventional

Funder types: Industry

Identifiers

NCT05376150

XPF-008-204

Details and patient eligibility

About

This is a multicenter, Phase 2, double-blind, randomized, parallel-arm, placebo-controlled clinical trial to evaluate the efficacy, safety, and tolerability of XEN1101 in subjects with Major Depressive Disorder.

Full description

The study is divided into 3 stages: Screening - up to 4 weeks duration; Treatment - 6 weeks duration; Follow-up - 4 weeks duration. The total study duration per subject is estimated to be approximately 14 weeks.

Enrollment: 168 patients

Sex: All

Ages: 18 to 65 years old

Volunteers: No Healthy Volunteers

Inclusion and exclusion criteria

Key Inclusion Criteria:

• Be properly informed of the nature and risks of the study and given written informed consent.
• Male or female, aged 18 through 65 years (inclusive) with a body mass index (BMI) ≤35 kg/m².
• Subject must meet the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) criteria for current MDD and currently in a moderate to severe major depressive episode (MDE), confirmed using the Mini International Neuropsychiatric Interview (MINI).
• Current MDE duration ≥2 months and <24 months at the time of screening.
• Current illness severity that is at least moderate, defined as a score of ≥20 on the HAM-D17 at screening and on Day 1.
• Score ≥20 on the SHAPS at screening and on Day1.
• Must be willing to comply with the study protocol for the full term of the study.

Key Exclusion Criteria:

• A primary psychiatric diagnosis other than MDD as defined by DSM-5 (comorbid anxiety disorders [including agoraphobia, generalized anxiety disorder, social anxiety disorder, post-traumatic stress disorder (PTSD), and panic disorder] are allowed).
• Concomitant use of antidepressants and/or other disallowed pharmacotherapy (including benzodiazepines).
• History of schizophrenia or other psychotic disorder, MDD with psychotic features, bipolar I or II disorder, or MDD with mixed features.
• History of non-response to >1 antidepressant drug due to lack of efficacy in the current MDE.
• Failing >3 antidepressant drug trials, for any reason, in the current MDE.
• History of non-response to electroconvulsive therapy (ECT) in the past 10 years.
• Active suicidal plan/intent in the past 6 months, or more than 1 lifetime suicide attempt.
• Females who are pregnant, breastfeeding, or planning to become pregnant during the first administration of study drug until 3 months after the last dose of study drug.
• Meets criteria for a substance use disorder within the past 12 months, with the exception of tobacco use, and/or has a positive urine toxicology screen for drugs of abuse.
• 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.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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168 participants in 3 patient groups, including a placebo group

XEN1101 10 mg

Experimental group

Description:

During the double blind treatment period (42 days), subjects will take 1 capsule of XEN1101 10 mg, orally with food, per day

Treatment:

Drug: XEN1101 10 mg

XEN1101 20 mg

Experimental group

Description:

During the double blind treatment period (42 days), subjects will take 1 capsule of XEN1101 20 mg, orally with food, per day

Treatment:

Drug: XEN1101 20 mg

placebo

Placebo Comparator group

Description:

During the double blind treatment period (42 days), subjects will take 1 capsule of placebo, orally with food, per day

Treatment:

Drug: Placebo