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COMP360 psilocybin

Phase 2

PTSD - Post Traumatic Stress Disorder | Small molecule | Psychiatry |COMPASS Pathways Plc - American Depository Shares|Last Updated: May 12, 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-BlindACTIVE_CONTROLLED
Total Trials1
Total Enrollment300
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07570654Redefine Study: A Study Evaluating the Efficacy, Safety, and Tolerability of COMP360 in Participants With Post-traumatic Stress DisorderPHASE2 NOT YET_RECRUITING 300Sep 1, 2026Sep 1, 2029May 12, 2026 -
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Study Endpoints
Primary Endpoints
COMP360 25 mg versus COMP360 1 mg change from Baseline to Week 8 in CAPS-5 total severity score
8 weeks

The CAPS-5 (Clinician-Administered PTSD Scale for DSM-5) is a 30-item structured interview that yields a total severity score (0-80) reflecting PTSD symptoms. A higher CAPS-5 score indicates more severe, intense, and frequent PTSD symptoms.

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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
1 mg COMP360 psilocybinACTIVE_COMPARATOR -
10 mg COMP360 psilocybinEXPERIMENTAL -
25 mg COMP360 psilocybinEXPERIMENTAL -
Interventions
NameTypeDescription
COMP360 psilocybinDRUGCOMP360 psilocybin administered with monitoring and support
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo

Inclusion Criteria: * 18 years or older * Diagnosed with PTSD at least 6 months ago Exclusion Criteria: \- Diagnosed with certain psychiatric conditions such as bipolar disorder, schizophrenia, OCD, anorexia, or other conditions

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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT07570654primaryCompletionDate: changed
LOWMay 24, 2026NCT07570654studyFirstPostDate: changed
LOWMay 21, 2026NCT07570654NEW_TRIAL: changed
LOWMay 21, 2026NCT07570654NEW_TRIAL: changed