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AXS-12

Phase 3

Narcolepsy | Small molecule | Other |Axsome Therapeutics, Inc.|Last Updated: May 28, 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_CONTROLLED
Total Trials3
Total Enrollment179
FDA Designations
No designations recorded
Clinical Trials (3)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05113745A Study to Assess the Long-term Efficacy and Safety of AXS-12 (Reboxetine) in Subjects With Narcolepsy (ENCORE)PHASE3 COMPLETED 68Oct 20, 2021Nov 15, 2024Nov 13, 202525 United States, Canada
NCT05059223A Study to Assess the Efficacy and Safety of AXS-12 (Reboxetine) in Patients With NarcolepsyPHASE3 COMPLETED 90Sep 15, 2021Mar 15, 2024May 28, 202650 United States, Canada
NCT03881852Clinical Outcomes in Narcolepsy and Cataplexy: An Evaluation of Reboxetine Treatment (CONCERT)PHASE2 COMPLETED 21Jan 30, 2019Nov 27, 2019Aug 24, 202314 United States
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Study Endpoints
Primary Endpoints
Long-term safety as measured by the incidence of treatment-emergent adverse events
Up to 28 weeks
Efficacy as measured by change in frequency of cataplexy attacks from baseline.
Baseline to Week 27
Frequency of cataplexy attacks
Change from Baseline to Week 5

Average number of cataplexy attacks per week

Change From Baseline in the Weekly Average Total Number of Cataplexy Attacks
2 weeks

Presented as LSmeans. A positive change is indicative of improvement.

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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
AXS-12 (reboxetine)EXPERIMENTAL* Up to 24 weeks in open-label period * Up to 4 weeks in randomized double-blind period
PlaceboPLACEBO_COMPARATORUp to 4 weeks in randomized double-blind period
Interventions
NameTypeDescription
AXS-12 (reboxetine)DRUGAXS-12 tablets, taken twice daily
PlaceboDRUGPlacebo tablets, taken twice daily
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Eligibility Criteria
Age Range15 Years — 75 Years
SexALL
Healthy VolunteersNo
Study Sites25

Inclusion Criteria: * Completed the treatment period of Study AXS-12-301 * Willing and able to comply with the study requirements Exclusion Criteria: * Significant change in medical history or concomitant medications since enrolling in the AXS-12-301 study which, in the opinion of the Investigato...

Countries:United StatesCanada
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