NCT06827054

Brief Summary

This phase II trial studies whether psilocybin with psychotherapy is safe and if it works for improving chronic pain in cancer patients who require opioids to manage their pain. Psilocybin is taken from the mushroom Psilocybe mexicana. Psilocybin acts on the brain to cause hallucinations (sights, sounds, smells, tastes, or touches that a person believes to be real but are not real). This may impact a patient's "total pain", a view that accounts for the psychological, spiritual, and social factors that contribute to their experience of pain. Psychotherapy uses methods such as discussion, listening, and counseling to help patients change the way they react to environmental triggers that may cause a negative reaction. Giving psilocybin with psychotherapy may be safe and helpful for improving chronic pain in cancer patients who require opioids to manage their pain.

Trial Health

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Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
20

participants targeted

Target at below P25 for phase_2

Timeline
12mo left

Started May 2026

Shorter than P25 for phase_2

Geographic Reach
1 country

1 active site

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

January 22, 2025

Completed
23 days until next milestone

First Posted

Study publicly available on registry

February 14, 2025

Completed
1.2 years until next milestone

Study Start

First participant enrolled

May 15, 2026

Expected
12 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 5, 2027

Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

May 5, 2027

Last Updated

March 24, 2026

Status Verified

March 1, 2026

Enrollment Period

12 months

First QC Date

January 22, 2025

Last Update Submit

March 23, 2026

Conditions

Outcome Measures

Primary Outcomes (7)

  • Incidence of adverse events (AEs)

    AE assessments will be performed at each treatment session and all subsequent in-person and virtual visits. This will be clinician-observed events. These evaluations will utilize the established Common Terminology Criteria for Adverse Events version 5.0. AEs will be summarized by attribution and grade using frequencies and relative frequencies, where the grade 3+ AE rate will be estimated with 90% credible regions obtained by Jeffrey's prior method. Additionally, a continual safety monitoring plan will be utilized to ensure study suspension should the AE rates exceed pre-defined thresholds.

    From start date of intervention to 30 days after the last intervention

  • Change in Vital signs

    Continuous Vital signs will be assessed and summarized by timepoint using the appropriate descriptive statistics. The change in these measures will be modeled as a function of time and a random subject effect using linear mixed models, where tests about the appropriate contrasts of model estimates will be used to identify significant changes relative to pre-treatment levels. All model assumptions will be verified graphically.

    Up to baseline, dosing sessions 1 and 2 up to day 84

  • Incidence of clinically important changes in ICG parameters

    To assess any changes in EKG records from baseline EKG to day 28 EKG

    At baseline and day 28

  • Change in risk for suicide

    Will be assessed using the Columbia-Suicide Severity Rating Scale. Will be summarized by timepoint using the appropriate descriptive statistics. The change will be modeled as a function of time and a random subject effect using linear mixed models, where tests about the appropriate contrasts of model estimates will be used to identify significant changes relative to pre-treatment levels. All model assumptions will be verified graphically.

    At baseline, dosing sessions 1, 2, 3, 5, and 7, and days 28, 56, and 84

  • Change in cognitive function

    A Montreal Cognitive Assessment will be provided prior to the first dosing session, at two-hour intervals during the first two dosing sessions and subsequent dosing sessions if a dose reduction occurred, and once during subsequent visits.

    At dosing sessions 1-3 and days 28, 56, and 84

  • Recruitment rate

    Recruitment will be measured as a percentage of participants who were contacted for prescreening that were enrolled. Will be estimated with 90% credible regions obtained by Jeffrey's prior method.

    Up to day 84

  • Retention rate

    Retention rate will be measured as a percentage of participants who enrolled that completed the trial, determined by completion of visit 19. Will be estimated with 90% credible regions obtained by Jeffrey's prior method.

    Up to day 84

Secondary Outcomes (2)

  • Change in average pain intensity

    At baseline and days 3, 7, 28, 56, and 84

  • Change in rescue opioid requirement

    At baseline and days 3, 7, 28, 56, and 84

Study Arms (1)

Supportive care (psychotherapy, psilocybin)

EXPERIMENTAL

Patients attend two preparatory psychotherapy sessions. Patients then receive psilocybin PO BIW for 4 weeks (8 doses total) in the absence of unacceptable toxicity and attend three integration psychotherapy sessions over 1.5 hours each during psilocybin dosing sessions 2, 4, and 6. Patients may optionally attend additional psychotherapy sessions as needed during follow-up. Additionally, patients undergo fMRI and collection of blood and urine samples throughout the study.

Procedure: Biospecimen CollectionProcedure: Functional Magnetic Resonance ImagingOther: InterviewDrug: PsilocybineBehavioral: PsychotherapyOther: Questionnaire Administration

Interventions

Undergo collection of blood and urine samples

Also known as: Biological Sample Collection, Biospecimen Collected, Specimen Collection
Supportive care (psychotherapy, psilocybin)

Undergo fMRI

Also known as: fMRI, Functional MRI
Supportive care (psychotherapy, psilocybin)

Ancillary studies

Supportive care (psychotherapy, psilocybin)

Given PO

Also known as: CY-39, Indocybin, Psilocybin
Supportive care (psychotherapy, psilocybin)
PsychotherapyBEHAVIORAL

Attend psychotherapy sessions

Also known as: talk therapy
Supportive care (psychotherapy, psilocybin)

Ancillary studies

Supportive care (psychotherapy, psilocybin)

Eligibility Criteria

Age18 Years - 75 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age ≥ 18 and ≤ 75 years old
  • Diagnosis of active cancer, any stage
  • Participants must have an Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2
  • Estimated prognosis of ≥ 3 months at the time of enrollment, determined by participant's primary oncologist or palliative physician
  • Diagnosis of moderate to severe pain (reported average pain score ≥ 4 on the 11-point Numerical Rating Scale) that is chronic (≥ 3 months) and secondary to cancer or cancer treatment
  • Pain regimen has been escalated to opioid therapy
  • Participants must be on stable pain regimen for at least one month prior, with no intention to adjust pain regimen during the study period
  • Participants must be ≥ 4 weeks beyond treatments/procedures that, in the opinion of the study physician, would significantly affect outcomes related to pain and physical function (e.g., surgery or radiation). Participants may otherwise receive cancer-directed treatment throughout the study period
  • Have no known procedures/treatments scheduled in advance that would prohibit patient from completing or significantly delaying completion of the study
  • The participant has no vacations or plans to be out of town during their study enrollment
  • Participants must not plan for additional treatments/procedures that, in the opinion of the study physician, would significantly affect outcomes related to pain and physical function (e.g., surgery or radiation) for ≥ 4 weeks following psilocybin treatment initiation. Participants may otherwise receive cancer-directed treatment throughout the study period
  • No use of other illicit substances (excluding cannabis) within the past year based on self-report at screening and routine urine toxicology screen
  • Participants must be able to read, write, and speak English
  • Participants must be able to swallow pills
  • Agree to refrain from using any unprescribed psychoactive drugs, including alcoholic beverages, ≤ 24 hours of before each psilocybin administration. Exceptions include:
  • +8 more criteria

You may not qualify if:

  • Participants who are pregnant or breast-feeding
  • Participants of childbearing potential who decline to use a highly effective dual contraceptive method for the duration of the study
  • Participants with a condition impairing oral intake or digestive absorption
  • Cognitive impairment as defined by Montreal Cognitive Assessment (MOCA) score \< 23
  • Medical conditions or serious abnormalities of complete blood count, chemistries, or electrocardiography (ECG) that in the opinion of the study physician would preclude safe participation in the trial. Some examples include: congestive heart failure, valvular heart disease, recent acute myocardial infarction or evidence of ischemia, clinically significant arrhythmias (e.g., ventricular fibrillation, torsades) or clinically significant ECG abnormality (e.g. corrected QT interval using Fridericia's Correction Formula \[QTcF\] interval \> 450 in males and \> 470 in females), uncontrolled hypertension (systolic blood pressure \[BP\] ≥ 140 or diastolic BP ≥ 90 on three separate occasions), congenital long QT syndrome, renal dysfunction (i.e. creatinine clearance \[CrCl\] \< 40 mL/min), liver cirrhosis or hepatic dysfunction (indicated by gamma-glutamyltransferase \[GGT\], aspartate aminotransferase \[AST\], or alanine aminotransferase \[ALT\] \> 3 x ULN \[upper limit of norm\] or total bilirubin \[bili\] \> 3.0 mg/dl, or Child Pugh over class C), paraneoplastic syndrome, respiratory failure, dementia, delirium, known cerebral aneurysm, seizure disorder, stroke/transient ischemic attack (TIA) in past year, cancer with known central nervous system (CNS) involvement, previously treated brain metastasis, or other major CNS disease
  • Participants who have a personal history of, or a current diagnosis of the following: primary psychotic disorder, major depressive disorder with psychotic features, bipolar affective disorder type 1 or history of or current dissociative identity disorder
  • Participants who have an ongoing substance use disorder (defined as active in the past year)
  • Participants with first-degree relatives with schizophrenia or bipolar disorder may be eligible depending on their age and personal and family psychiatric history. The decision will be made by the principal investigator and study psychiatrist or on-call psychiatric provider based on risk assessment
  • Active suicidal behavior (interrupted or aborted attempt; preparatory acts) as assessed by Columbia-Suicide Severity Rating Scale (C-SSRS) connotating either passive or active suicidal intent; OR one of the following:
  • History of suicide attempt(s) within the past year (≤ 365 days)
  • Have any suicidal ideation or thoughts, in the opinion of the study physician or principal investigator (PI), that presents a serious risk of suicidal or self-injurious behavior
  • Any contraindications to undergoing an fMRI scan, including having metal implants or metal fragments in the body
  • Participants who have hypersensitivity to the ingredients of the IMP (Investigational Medicinal Product) listed below:
  • Indol alkaloids including psilocybin and psilocin
  • Constituents of Psilocybe cubensis including protein, fats, carbohydrates, ergosterols, beta-glucan, and polyphenols
  • +17 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Roswell Park Cancer Institute

Buffalo, New York, 14263, United States

Location

MeSH Terms

Interventions

Specimen HandlingInterviews as TopicPsilocybinPsychotherapy

Intervention Hierarchy (Ancestors)

Clinical Laboratory TechniquesDiagnostic Techniques and ProceduresDiagnosisInvestigative TechniquesData CollectionEpidemiologic MethodsHealth Care Evaluation MechanismsQuality of Health CareHealth Care Quality, Access, and EvaluationPublic HealthEnvironment and Public HealthIndole AlkaloidsAlkaloidsHeterocyclic CompoundsIndolesHeterocyclic Compounds, 2-RingHeterocyclic Compounds, Fused-RingTryptaminesIndolizidinesIndolizinesBehavioral Disciplines and Activities

Study Officials

  • William Alexander

    Roswell Park Cancer Institute

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 2
Allocation
NA
Masking
NONE
Purpose
SUPPORTIVE CARE
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

January 22, 2025

First Posted

February 14, 2025

Study Start (Estimated)

May 15, 2026

Primary Completion (Estimated)

May 5, 2027

Study Completion (Estimated)

May 5, 2027

Last Updated

March 24, 2026

Record last verified: 2026-03

Locations