CClinicalTrials.gg
CompletedNCT04519957Updated Sep 22, 2022

Long Term Follow Up Study to COMP 001 And COMP 003 Trials (P-TRD LTFU)

An observational study in Treatment Resistant Depression, sponsored by COMPASS Pathways. Completed at 8 sites in 5 countries. Open to participants aged 18 Years to 55 Years. Per ClinicalTrials.gov, last updated 2022-09-22.

Sponsored by COMPASS Pathways · Observational

Study type
Observational
Model
Ecologic or community
Time perspective
Prospective
Enrollment
66
Ages
18 Years to 55 Years
Sex
All
01

Study summary

The primary objective of this study is to assess the long-term efficacy of psilocybin with respect to use of new antidepressant treatment, hospitalisations for depression, suicidality, and depressive severity rated using the Montgomery and Asberg Depression Rating Scale (MADRS) over a total of 52 weeks (compared across the 1 mg, 10 mg and 25 mg psilocybin groups from COMP 001).

Read the detailed description

In this present study (COMP 004), the aim is to follow up participants from COMP 001 and COMP 003 in a long-term follow up study, with both remote and digital assessments, to explore the long term efficacy and safety of the three different doses of psilocybin (1 mg, 10 mg, and 25 mg) administered to patients with TRD as a monotherapy in COMP 001 and 25 mg psilocybin administered as an adjunct to an SSRI in COMP 003. Patients previously treated in COMP001 will be followed for approximately 40 weeks and patients previosuly treated in COMP003 will be followed for approximately 49 weeks giving a total follow up period of 52 weeks from psilocybin dosing.

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Conditions studied

  • Treatment Resistant Depression
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In context

Depression

8,057 studies on the registry are indexed under Depression; 1,641 are open to participants now.

This study's enrollment of 66 is below the median of 160 across 1,084 observational studies indexed under Depression.

Browse Depression studies →

Lead sponsor

COMPASS Pathways is the lead sponsor of 9 studies on the registry; 1 is open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 3 (60%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 55 Years
Sexes eligible
All
Sampling method
Probability sample

Study population

TRD patients who completed COMP001 or COMP003

Inclusion criteria

Signed ICF Each participant having completed the final study visit of either COMP 001 or COMP 003 Ability to complete all protocol required assessment tools (including having access to the internet in order to complete the digital assessments) without any assistance or alteration to the copyrighted assessments, and to comply with all study visits

Exclusion criteria

Exclusion Criteria:

Subject has any condition, for which in the opinion of the investigator, participation would not be in the interest of the subject eg participation could compromise the wellbeing of the participant or prevent, limit, or confound the protocol-specified assessments

05

Study design

Observational model
Ecologic or community
Time perspective
Prospective
Enrollment
66 participants (actual)
Patient registry
No
06

What researchers measure

Primary outcomes

  1. Long-term efficacy of psilocybin

    Use of new antidepressant treatment, hospitalisations for depression, suicidality, and depressive severity rated using the Montgomery and Asberg Depression Rating Scale (MADRS)

    Time frame: up to 52 weeks

Secondary outcomes

  1. Response, sustained response, remission and change in depression severity

    Montgomery Asberg Depression Rating Scale (MADRS)

    Time frame: Up to 52 weeks

  2. Psychosocial functioning and to predict durability of response to antidepressant treatment

    Work and Social Adjustment Scale (WSAS) score change from Baseline of the prior study

    Time frame: up to 52 weeks

  3. Functional impairment in work/school, social life, and family life.

    Sheehan Disability Scale (SDS) score change from Baseline of the prior study

    Time frame: Up to 52 weeks

  4. Safety of Psilocybin

    Incidence and severity of Adverse Events (AEs) and Seroius Adverse Events (SAEs)

    Time frame: Up to 52 weeks

07

Study locations

8 sites
  • Kadima Neuropsychiatry Institute
    La Jolla, California 92037, United States
  • Altman Clinical and Translational Research Institute, University of California
    San Diego, California 92093, United States
  • Mood and Anxiety Disorders Program Emory University School of Medicine
    Atlanta, Georgia 30329, United States
  • UT Center of Excellence on Mood Disorders, University of Texas Health Science Center
    Houston, Texas 77054, United States
  • National Institute of Mental Health Czech Republic
    Klecany, Czechia
  • Sheaf House, Tallaght Hospital
    Dublin, Ireland
  • Groningen University Medical Centre
    Groningen, Netherlands
  • Kings College London, Institute of Psychiatry, Psychology and Neurology
    London, United Kingdom
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 22, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04519957
Lead sponsor
COMPASS Pathways
Responsible party
Sponsor
First posted
Aug 20, 2020
Start date
Jul 20, 2020
Primary completion
Aug 11, 2022
Completion
Aug 11, 2022
Last update
Sep 22, 2022

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Sep 2022. You cannot join it, but the record below documents what was studied.

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