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Treatment Resistant DepressionPhase 2NCT04739865

The Safety and Efficacy Of Psilocybin as an Adjunctive Therapy in Participants With Treatment Resistant Depression

A Phase 2 study testing Psilocybin in people with Treatment Resistant Depression, run by COMPASS Pathways at 2 sites in 2 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The Safety and Efficacy of Psilocybin as an Adjunctive Therapy in Participants with Treatment-Resistant Depression Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Treatment Resistant Depression
What is being tested?
Psilocybin
Could I receive a placebo?
No, everyone receives an active treatment
How many people
19 participants
Where
2 sitesin 2 countries
Study dates
10 Aug 2020to 14 Oct 2021
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Signed ICF.
  • 18 years of age or older
  • At least moderate MDD
  • Hamilton Depression Rating Scale (17 item) score ≥18
  • Currently receiving treatment with a selective serotonin reuptake inhibitor
  • Failure to respond to an adequate dose and duration of 2, 3, or 4 pharmacological treatments
  • McLean Screening Instrument for Borderline Personality Disorder <7 at Screening (V1).
  • Ability to complete all protocol required assessment tools without any assistance or alteration to the copyrighted assessments, and to comply with all study visits.

Who cannot join

  • Psychiatric Exclusion Criteria:
  • Current or past history of schizophrenia, psychotic disorder (unless substance induced or due to a medical condition), bipolar disorder, delusional disorder, paranoid personality disorder, schizoaffective disorder, or borderline personality disorder, as assessed by medical history, McLean Screening Instrument for Borderline Personality Disorder and a structured clinical interview (version 7.0.2 MINI).
  • Prior electroconvulsive therapy and/or ketamine for current episode.
  • Ongoing use of an antidepressant medication, including augmentation or combination therapies, other than a single SSRI
  • Current psychological therapies that will not remain stable within 21 days of the psilocybin session. Psychological therapies cannot be initiated within 21 days of baseline.
  • Current (within the last year) alcohol or substance use disorder as informed by DSM 5 (diagnosed by MINI 7.0.2) at Screening (V1).
Show all 19Show fewer
  • Significant suicide risk as defined C-SSRS within the past year
  • Depression secondary to other severe medical conditions according to clinicians' judgement.
  • Other personal circumstances and behaviour judged to be incompatible with establishment of rapport or safe exposure to psilocybin, including exposure to psilocybin within the past year and use of psychedelics, such as ayahuasca, during the current depressive episode.
  • General Medical Exclusion Criteria:
  • Women who are pregnant, nursing or planning a pregnancy.
  • Cardiovascular conditions
  • Uncontrolled or insulin dependent diabetes.
  • Seizure disorder.
  • Positive urine drug screen for illicit drugs or drugs of abuse
  • Current enrolment in any investigational drug or device study or participation in such within 30 days prior to Screening (V1).
  • Current enrolment in another clinical study of an investigational medical or participation in such within 30 days of Screening (V1).
  • Abnormal and clinically significant results on the physical examination, vital signs, ECG or laboratory tests at Screening (V1).
  • Any other clinically significant cardiovascular, pulmonary, gastrointestinal, hepatic, renal or any other major concurrent illness that, in the opinion of the investigator, may interfere with the interpretation of the study results or constitute a health risk for the participant if he/she takes part in the study.

Trial locations and contacts

2 sites in 2 countries.

2 sites in 2 countries

United States1 site
  • Kadima Neuropsychiatry Institute

    La Jolla, California, 92037

Other trials in United States

Ireland1 site
  • Sheaf House, Tallaght Hospital

    Dublin

Other trials in Ireland

About this study

The Safety and Efficacy of Psilocybin as an Adjunctive Therapy in Participants with Treatment-Resistant Depression

Read the detailed description

A recent open label study of the effects of psilocybin in participants with treatment-resistant depression (TRD) showed rapid significant decrease of depressive symptoms after treatment with psilocybin coupled with psychological support. Over 40% of participants sustained response at 3 months. In this study, the aim is to explore effectiveness of 25 mg of psilocybin as an adjunctive therapy in participants with TRD.

Being tested
Psilocybin
Medical subject headings
Depressive Disorder, Treatment-Resistant

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

Study groups in NCT04739865
Study groupRoleWhat they receive
25 mg COMP360 PsilocybinExperimental25 mg COMP360 Psilocybin
Receives: Drug: Psilocybin

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Improvement in Depressive Symptoms

    Change in Montgomery-Asberg Depression Rating Scale (MADRS) total score from Baseline to 3 weeks post psilocybin administration.

    The minimum and maximum MADRS total score values are 0 and 60 and a higher score means a worse outcome.

    Measured: 3 weeks

Secondary outcomes (3)
  1. Incidence of Response

    The proportion of participants with a response (defined as a ≥ 50% improvement in Montgomery-Asberg Depression Rating Scale [MADRS] total score from Baseline) at Week 3 post psilocybin administration.

    The minimum and maximum MADRS total score values are 0 and 60 and a higher score means a worse outcome.

    Measured: 3 weeks

  2. Incidence of Remission

    The proportion of participants with remission (defined as Montgomery-Asberg Depression Rating Scale [MADRS] total score ≤ 10) at Week 3 post psilocybin administration The minimum and maximum MADRS total score values are 0 and 60 and a higher score means a worse outcome.

    Measured: 3 weeks

  3. Improvement in Clinical Global Impression - Severity

    Changes from Baseline in Clinical Global Impression-Severity score at Week 3 post psilocybin administration.

    The minimum and maximum values are 1 and 7 and a higher score means a worse outcome.

    Measured: 3 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted5 Feb 2021
  2. Study start10 Aug 2020
  3. Primary completion14 Oct 2021
  4. Study completion14 Oct 2021

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Model description
Open label
Masking
None (open label)
Enrolment
19 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04739865
Sponsor's protocol ID
COMP003
Status last verified
Nov 2023
First submitted
22 Sep 2020
Last updated
9 Nov 2023
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Psilocybin in people with Treatment Resistant Depression, run by COMPASS Pathways at 2 sites in 2 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 19 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 9 Nov 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in United States, Ireland. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 9 Nov 2023). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Improvement in Depressive Symptoms (time frame: 3 weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Nov 2023.

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