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Lemborexant

Phase 2

Major Depressive Disorder(MDD) | Small molecule | Psychiatry |Unity Biotechnology, Inc.|Last Updated: May 8, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDBiomarker
Total Trials1
Total Enrollment30
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06843187Lemborexant for the Treatment of Residual Insomnia in Major Depressive Disorder (MDD)PHASE2 RECRUITING 30Sep 25, 2024Apr 1, 2028May 8, 20261 Canada
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Study Endpoints
Primary Endpoints
Feasibility Outcomes
13 weeks

Feasibility will be measured by the recruitment rate, withdrawal rate, data completion rate, and adherence rate. Recruitment rate will be quantified by the percentage of eligible participants enrolled relative to the number of participants contacted. Feasibility will be marked as a minimum of 1-2 participants enrolled per month. Withdrawal/dropout rate will be quantified by the percentage of participants who drop out of the study. The upper limit of the 95% confidence interval (CI) for dropout rate should not exceed 20%. Adherence and data completion will bhe proportion of participants who strictly follow the study protocol (the "per-protocol group") will be estimated with a 95% CI. This includes adherence to treatment (taking the medication correctly for six weeks), study completion (attending all required visits), and providing complete data. To be considered feasible, the lower limit of this 95% CI must be greater than 80%.

Tolerability Outcomes
10 weeks

Tolerability will be measured by the frequency and nature of adverse events and medication adherence (i.e., missed dosage).

Secondary Endpoints
Preliminary Clinical Parameters
6 weeks
Within-person Correlations
10 weeks
Standard Deviation
13 weeks
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeOTHER
Treatment Arms
ArmTypeDescription
LemborexantEXPERIMENTALParticipants will take a 5 mg pill of lemborexant daily for two weeks, followed by a dosage increase to 10 mg daily for the next four weeks (6 weeks total).
PlaceboPLACEBO_COMPARATORParticipants will take a 5 mg of placebo pill daily for 2 weeks then 10 mg daily for 4 weeks (total of 6 weeks).
Interventions
NameTypeDescription
LemborexantDRUGDayvigo (lemborexant compound) is an orexin antagonist that acts on the arousal and sleep neural networks of the brain to regulate sleep-wake cycles and is used in the treatment of insomnia characterized by difficulties with sleep.
PlaceboOTHERThe placebo is an inactive sugar pill that looks and tastes identical to the lemborexant pill.
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Eligibility Criteria
Age Range18 Years — 70 Years
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. Aged 18 to 70 (inclusive), with a self-reported body mass index (BMI) between 19 and 30 kg/m2 (inclusive); 2. Meet criteria for primary MDD diagnosis without psychotic symptoms, as defined by the Diagnostic and Statistical Manual of Mental Disorders Fifth Edition (DSM-5)2, an...

Countries:Canada
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT06843187primaryCompletionDate: changed
LOWMay 24, 2026NCT06843187studyFirstPostDate: changed