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The Safety and Efficacy of Psilocybin in Patients With Treatment-resistant Depression and Chronic Suicidal Ideation

The Safety and Efficacy of Psilocybin in Patients With Treatment-resistant Depression and Chronic Suicidal Ideation

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05220410
Enrollment
20
Registered
2022-02-02
Start date
2022-03-28
Completion date
2025-05-12
Last updated
2025-12-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Suicidal Ideation, Treatment Resistant Depression

Keywords

Psilocybin, Psychedelic, Major depression, Treatment resistant depression, Suicidal ideation

Brief summary

This study aims to explore the safety and tolerability of a single dose of psilocybin (25mg) administered under supportive conditions to adult participants with TRD and chronic suicidal ideation

Interventions

DRUGPsilocybin

Open-Label

Sponsors

COMPASS Pathways
CollaboratorINDUSTRY
Sheppard Pratt Health System
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* Between 18 and 65 years of age at Screening * Diagnosis of Major Depressive Disorder (MDD) * Significant level of suicidal thoughts with active ideation and without immediate intent * Failure to respond to 2 medications in the current episode

Exclusion criteria

* Current or past history of schizophrenia, psychotic disorder, bipolar disorder, borderline personality disorder, etc. * Current alcohol or substance use disorder

Design outcomes

Primary

MeasureTime frameDescription
Modified Scale for Suicidal Ideation (MSSI)Baseline (V2) to Day 1 (V4), Week 1 (V5), Week 2 (V6), Week 3 (V7), Week 6 (V8), Week 9 (V9) and Week 12 (V10)The MSSI is an 18-item clinician rated scale to assess the presence or absence of suicide ideation and the degree of severity of suicidal ideas. Each of the 18 items is rated on a scale of 0 to 3 where a higher score indicates greater suicidal severity.

Secondary

MeasureTime frameDescription
Montgomery-Åsberg Depression Rating Scale (MADRS)Baseline (V2) to Day 1 (V4), Week 1 (V5), Week 2 (V6), Week 3 (V7), Week 6 (V8), Week 9 (V9), and Week 12 (V10)The MADRS is a clinician rated scale measuring depression severity, consisting of 10 items, each scored from 0 (normal) to 6 (severe), for a total possible score of 60; higher scores denote greater severity.
Concise Health Risk Tracking Self Report 12 Items (CHRT-SR)Baseline (V2) to Day 1 (V4), Week 1 (V5), Week 2 (V6), Week 3 (V7), Week 6 (V8), Week 9 (V9) and Week 12 (V10)The CHRT-SR is a 12-item self-report measure that systematically assesses both suicidal thinking and associated thoughts that might indicate the propensity for suicidal acts.
Columbia-Suicide Severity Rating Scale (C-SSRS)Baseline (V2) to Day 1 (V4), Week 1 (V5), Week 2 (V6), Week 3 (V7), and Week 12 (V10)The C-SSRS is a semi-structured interview designed to assess the severity and intensity of suicidal ideation, suicidal behavior, and non-suicidal self injurious behavior over a specified time period. The measurement of suicidal ideation is based on five yes or no questions with accompanying descriptions arranged in order of increasing severity.
Clinical Global Impression - Modified for Depression (CGI-D)Baseline (V2) to Week 3 (V7) and Week 12 (V10)The CGI is a 3-item observer-rated scale that measures illness severity, global improvement or change and therapeutic response.
Clinical Global Impressions - Modified for Suicidal Ideation (CGI-SI)Baseline (V2) to Week 3 (V7), and Week 12 (V10)The CGI is a 3-item observer-rated scale that measures illness severity, global improvement or change and therapeutic response.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026