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Bipolar II DisorderPhase 2BAPNCT05065294

Psilocybin Therapy for Depression in Bipolar II Disorder

A Phase 2 study testing Psilocybin therapy in people with Bipolar II Disorder, run by University of California, San Francisco at 1 site in United States.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

The purpose of this study is to determine the safety, tolerability, and feasibility of psilocybin therapy in people with Bipolar II Disorder. Read more about this study

Who is it for?
Ages 18 to 70 years
Conditions the study is for
Bipolar II Disorder
What is being tested?
Psilocybin therapy
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
14 participants
Where
1 siteUnited States
Study dates
28 Jan 2022to Jul 2025
Phase
Phase 2
Are there results?
Not yet: the study is under way

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 to 70 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Age 18 to 70
  • Comfortable speaking and writing in English
  • Diagnosis of Bipolar Disorder II with current depression
  • Have a care partner/support person available throughout the study
  • Able to attend all in-person visits at UCSF as well as virtual visits
  • Having tried at least one previous medication trials for their bipolar disorder, each lasting at 6 weeks or more.

Who cannot join

  • Current or previous diagnosis of Bipolar I Disorder
  • History of schizophrenia spectrum or psychotic disorder
  • Use of psychedelics within the past 6 months, including MDMA
  • Current diagnosis of cancer
  • Seizures that continue to the present
  • Fear of blood or needles
  • Regular use of medications that may have problematic interactions with psilocybin, including but not limited to antidepressants (Bupropion allowed), serotonin antagonists, some antipsychotics, dopamine agonists/antagonists, stimulants, opioids, and Lithium.
  • A health condition that makes this study unsafe or unfeasible, determined by study physicians

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of California, San Francisco

    San Francisco, California, 94121

Other trials in United States

About this study

Official title: An Open-Label Pilot Study Examining the Feasibility, Safety, and Effectiveness of Psilocybin Therapy for Depression in Bipolar II Disorder

The purpose of this study is to determine the safety, tolerability, and feasibility of psilocybin therapy in people with Bipolar II Disorder.

Read the detailed description

The primary goal of this study is to examine the safety, tolerability, and feasibility of psilocybin therapy in people with Bipolar II Disorder (BD II). Fourteen participants, ages 18 to 70 with clinically diagnosed BD II with active depression, in active outpatient mental health treatment, and who meet all other inclusion and exclusion criteria at screening will be enrolled. After baseline assessments, participants will engage in preparatory visits with trained facilitators, followed by an initial drug administration of oral psilocybin,supervised by the facilitators and a clinician who will conduct safety monitoring throughout. Participants will complete assessment and integration sessions with the facilitators subsequently in order to help process the experience. Participants who tolerated the first dosage may be asked to complete a second psilocybin dosing session, involving the same preparation, procedures, integration, and supervision as the first. Primary outcome measures will assess safety, tolerability, and feasibility of study procedures. Efficacy will be measured by change in depression as measured by the MADRS three weeks after the final psilocybin administration. Exploratory outcome measures will assess changes in sleep, quality of life, and therapeutic engagement.

Being tested
Psilocybin therapy
Keywords
Bipolar, Depression, Psilocybin, Psychedelic, Psilocybin Therapy, Bipolar II, Safety
Medical subject headings
Bipolar Disorder, Depression

What participants receive

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

  • Psilocybin therapyDrug

    Also called 4-phosphoryloxy-N,N-dimethyltryptamine

    • Psilocybin administration session 10mg-25mg delivered orally with psychological support and monitoring
Study groups in NCT05065294
Study groupRoleWhat they receive
Psilocybin therapyExperimentalParticipants will receive one or two doses of psilocybin in a monitored setting approximately three weeks apart, with preparation sessions before and integration sessions after.
Receives: Drug: Psilocybin therapy

What is being measured

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

  1. Safety and tolerability of psilocybin therapy for depression in BD II

    -Incidence, severity, and frequency of Adverse Events (AEs) including Treatment-Emergent AEs (TEAEs) and Serious AEs (SAEs)

    Measured: Baseline to 3 months following last drug dose

  2. Recruitment rate

    -Measured as a percentage of participants who were contacted for pre-screening and consented.

    Measured: Baseline to 3 months following last drug dose

  3. Retention rate

    -Measured as a percentage of participants who began and completed treatment.

    Measured: Baseline to 3 months following last drug dose

  4. Clinician-reported effects of psilocybin therapy on depressive symptoms in people with Bipolar II

    • Montgomery-Asberg Depression Rating Scale (MADRS)
    • Each item is scored on a on a scale of 0-6 with a total score of 0-60
    • Higher scores correspond to worse outcomes

    Measured: Baseline to 3 weeks following last drug dose

  5. Treatment Satisfaction of study procedures

    • Measured by the treatment satisfaction questionnaire
    • 5-item scale, plus three free response questions
    • Higher scores representing better treatment satisfaction

    Measured: Baseline to 3 months following last drug dose

  6. Self-reported effects of psilocybin therapy on manic and/or psychotic symptoms in people with Bipolar II

    • Altman Self-Rating Mania Scale(ASRM-14)
    • Each item rated on a 0 to 4 scale, with a total score of 0 to 56
    • Higher scores indicating greater severity of manic symptoms, with items that also measure psychosis

    Measured: Baseline to 11 days following each drug dose

  7. Clinician-reported effects of psilocybin therapy on mania symptoms in people with Bipolar II

    • Young Mania Scale(YMS)
    • 7 items are rated on a 0 to 4 scale and 4 items are rated on a 0 to 8 scale. The total score ranges from 0-60
    • Higher scores indicating greater severity of manic symptoms.

    Measured: Baseline to 3 months following each drug dose

  8. Clinician-reported effects of psilocybin therapy on suicidality symptoms in people with Bipolar II

    • Columbia-Suicide Severity Rating Scale (C-SSRS)
    • Characterizes suicidal ideation in three separate categories with a total score range from 0-25
    • Higher scores indicate greater severity

    Measured: Baseline to 3 months following last drug dose

Secondary outcomes (9)
  1. Patient reported effects of psilocybin therapy on depressive symptoms symptoms in people with Bipolar II (exploratory)

    • Quick Inventory of Depressive Symptomatology (QIDS-SR)
    • Each item is scored on a on a scale of 0-3, with a total score of 0-27
    • Higher scores correspond to worse outcomes

    Measured: Baseline to 3 months following last drug dose

  2. Effects of psilocybin therapy on anxiety symptoms in people with Bipolar II (exploratory)

    • Generalized Anxiety Disorder 7-item scale (GAD-7)
    • Each item is rated on a scale from 0-3, with a total score of 0-21
    • Higher scores correspond to worse outcomes

    Measured: Baseline to 3 months following last drug dose

  3. Effects of psilocybin therapy on sleep quality in people with Bipolar II (exploratory)

    • Insomnia Severity Index (ISI)
    • Each item is scored on a scale of 0-4 with a total score range of 0-28
    • Higher scores indicate greater severity in sleep disturbance

    Measured: Baseline to 3 months following last drug dose

  4. Effects of psilocybin therapy on quality of life in people with Bipolar II (exploratory)

    • Quality of Life in Bipolar Disorder Questionnaire (QoL-BD)
    • Each item is scored on a scale of 1-5 with a total score range of 48-240
    • Higher scores indicate greater quality of life

    Measured: Baseline to 3 months following last drug dose

  5. Effects of psilocybin therapy on borderline personality disorder symptoms in people with Bipolar II (exploratory)

    • Zanarini Rating Scale (ZRS)
    • Each item is scored on a scale of 0-4 with a total score range of 0-30
    • Higher scores indicate greater severity in symptoms

    Measured: Baseline to 3 months following last drug dose

  6. Effects of psilocybin therapy on adult attachment in people with Bipolar II (exploratory)

    • Experiences in Close Relationships-Modified 16-Item Scale (ECR-M16)
    • Each item is scored on a scale of 1-7 with a total score range of 8-126
    • Lower scores on each dimension of attachment anxiety and avoidance represent greater levels of attachment security

    Measured: Baseline to 3 months following last drug dose

  7. Effects of psilocybin therapy on participant-reported recovery in people with Bipolar II (exploratory)

    • Bipolar Recovery Questionnaire (BRQ)
    • 36 items (visual analog scales)
    • Higher total scores indicate a higher degree

    Measured: Baseline to 3 months following last drug dose

  8. Subjective effects of psilocybin therapy in people with Bipolar II

    • 5-Dimensional Altered States of Consciousness Rating Scale (5D-ASC)
    • 94 items (visual analog scales) broken down into subcategories to quantify the acute subjective effects of psilocybin directly following each psilocybin administration session

    Measured: Baseline to 3 months following last drug dose

  9. Subjective effects of psilocybin therapy in people with Bipolar II

    • Study specific Transformational Experiences Questionnaire (TEQ)
    • Meant to quantify subjective effects of psilocybin on 1-7 scale

    Measured: 3 weeks following last drug dose

Timeline

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

  1. First posted4 Oct 2021
  2. Study start28 Jan 2022
  3. Primary completion1 Aug 2024
  4. Study completionJul 2025 (estimated)

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
Other
Allocation
Not applicable
Intervention model
Single group
Model description
Open-label, single-arm, pilot study
Masking
None (open label)
Enrolment
14 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05065294
Sponsor's protocol ID
20-32789
Acronym
BAP
Status last verified
Sep 2024
First submitted
14 Sep 2021
Last updated
25 Sep 2024
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Publications

  • Grande I, Berk M, Birmaher B, Vieta E. Bipolar disorder. Lancet. 2016 Apr 9;387(10027):1561-1572. doi: 10.1016/S0140-6736(15)00241-X. Epub 2015 Sep 18.

    PubMed 26388529
  • Carhart-Harris RL, Bolstridge M, Rucker J, Day CM, Erritzoe D, Kaelen M, Bloomfield M, Rickard JA, Forbes B, Feilding A, Taylor D, Pilling S, Curran VH, Nutt DJ. Psilocybin with psychological support for treatment-resistant depression: an open-label feasibility study. Lancet Psychiatry. 2016 Jul;3(7):619-27. doi: 10.1016/S2215-0366(16)30065-7. Epub 2016 May 17.

    PubMed 27210031
  • Carhart-Harris RL, Bolstridge M, Day CMJ, Rucker J, Watts R, Erritzoe DE, Kaelen M, Giribaldi B, Bloomfield M, Pilling S, Rickard JA, Forbes B, Feilding A, Taylor D, Curran HV, Nutt DJ. Psilocybin with psychological support for treatment-resistant depression: six-month follow-up. Psychopharmacology (Berl). 2018 Feb;235(2):399-408. doi: 10.1007/s00213-017-4771-x. Epub 2017 Nov 8.

    PubMed 29119217
  • Griffiths RR, Johnson MW, Carducci MA, Umbricht A, Richards WA, Richards BD, Cosimano MP, Klinedinst MA. Psilocybin produces substantial and sustained decreases in depression and anxiety in patients with life-threatening cancer: A randomized double-blind trial. J Psychopharmacol. 2016 Dec;30(12):1181-1197. doi: 10.1177/0269881116675513.

    PubMed 27909165
  • Szmulewicz AG, Angriman F, Samame C, Ferraris A, Vigo D, Strejilevich SA. Dopaminergic agents in the treatment of bipolar depression: a systematic review and meta-analysis. Acta Psychiatr Scand. 2017 Jun;135(6):527-538. doi: 10.1111/acps.12712. Epub 2017 Mar 3.

    PubMed 28256707
  • Downey AE, Szigeti B, Bradley ER, Fernandes-Osterhold G, Sakai K, Llerena K, Fredenburg L, Nerayo J, Evans-Riera L, Nielsen B, Krystal AD, O'Donovan A, Gard DE, Woolley JD. An Open-Label, Dose-Escalation Trial of Psilocybin-Assisted Therapy for Bipolar II Depression. J Clin Psychiatry. 2026 Sep 21;87(4):25m16227. doi: 10.4088/JCP.25m16227.

    PubMed 42765891

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Psilocybin therapy in people with Bipolar II Disorder, run by University of California, San Francisco at 1 site in United States.

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 6 inclusion and 8 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: under way, not looking for participants, as of the sponsor's last update on 25 Sep 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. 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?

This study is still under way. Results are not available in the source record yet.

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?

Safety and tolerability of psilocybin therapy for depression in BD II (time frame: Baseline to 3 months following last drug dose). The study lists 8 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05065294, which also lists 6 linked publications.

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 25 Sep 2024.

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