Can a new oral drug lift severe depression?
NCT ID NCT05376150
First seen Sep 21, 2026 · Last updated Sep 21, 2026
Summary
Researchers are testing an experimental oral drug called XEN1101 in adults with major depressive disorder. The trial enrolls 168 people aged 18 to 65 who are in a moderate to severe depressive episode. Participants receive either 10 mg or 20 mg of XEN1101 or a placebo for six weeks. The main goal is to see whether the drug reduces depression severity, measured by a standard rating scale, and whether it improves the ability to feel pleasure.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- XEN1101, an experimental oral drug
- What this could lead to
- If XEN1101 works, it could offer a new oral option for people whose depression has not improved with current treatments.
- What could go wrong
- This is a Phase 2 trial with 168 participants, so any benefit seen may not hold up in larger studies. XEN1101 can cause dizziness, sleepiness, and other side effects.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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168 people
The number who actually took part.
- Started
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May 2022
- Finished
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Oct 2023
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 65 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
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.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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AIM Trials
Plano, Texas, 75093, United States
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Advanced Research Center
Anaheim, California, 92805, United States
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Altea Research
Las Vegas, Nevada, 89102, United States
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Artemis Institute for Clinical Research
Riverside, California, 92503, United States
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Artemis Institute for Clinical Research
San Diego, California, 92103, United States
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Bio Behavioral Health
Toms River, New Jersey, 08755, United States
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CCM Clinical Reseach Group, LLC
Miami, Florida, 33133, United States
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California Neuropsychopharmacology Clinical Research Institute
Pico Rivera, California, 90660, United States
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FutureSearch Trials of Dallas, LP
Dallas, Texas, 75231, United States
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Global Medical Institutes (GMI)
Miami, Florida, 33125, United States
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Hassman Research Institute
Marlton, New Jersey, 08009, United States
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Manhattan Behavioral Medicine, PLLC
New York, New York, 10036, United States
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Meridian International Research
Miami, Florida, 33014, United States
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Neurobehavioral Research, Inc. (NBR)
Cedarhurst, New York, 11516, United States
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Psych Atlanta, PC
Marietta, Georgia, 30060, United States
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Revive Research Institute, Inc.
Elgin, Illinois, 60123, United States
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Richard M Weisler and Association
Raleigh, North Carolina, 27609, United States
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Sunwise Clinical Research, LLC
Lafayette, California, 94549, United States
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i-Research, Atlanta
Decatur, Georgia, 30030, United States
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iResearch
Savannah, Georgia, 31405, United States
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