Testing Psilocybin for treatment-resistant depression
Official title: Evaluating the Role of Psilocybin Monitors in Psilocybin Therapy for Treatment Resistant Depression
Evaluating the Role of Psilocybin Monitors in Psilocybin Therapy for Treatment Resistant Depression: A Pilot Randomized Clinical Trial
Interventions
Psilocybin
25 mg Psilocybin
Canadian Sites (2)
Toronto Western Hospital (University Health Network)
Toronto, Ontario, Canada
Centre for Addiction and Mental Health
Toronto, Ontario, Canada
Eligibility Criteria
See who this study is looking for29 criteria
The trial’s own eligibility text, word for word from the registry. Only the trial site can say who takes part.
Inclusion
- +Adults 18 to 70 years old;
- +Are outpatients;
- +Must be deemed to have capacity to provide informed consentInformed consentThe process of being told what taking part involves, then choosing freely.Read more →;
- +Must read, sign and date the informed consent form independently. Proxy consent, including consent from a Legally Authorized Representative (LAR), is not permitted in this study;
- +Stated willingness to comply with all study procedures;
- +Ability to read and communicate in English, such that their literacy and comprehension is sufficient for understanding the consent form and study questionnaires, as evaluated by study staff obtaining consent
- +Primary DSM-5 diagnosis of non-psychotic MDD, single or recurrent, and current Major Depressive Episode (MDE) based on the Mini-International Neuropsychiatric Interview (MINI) for DSM-5 administered at the first screening visitScreeningThe checks done before joining, to see whether a study fits.Read more →;
- +Participants diagnosed with treatment-resistant depression defined as individuals with a baselineBaselineYour starting measurements, taken before treatment begins.Read more → HamD-17 score \> 14 and that have not responded to two or more separate trials of antidepressants at an adequate dosage and duration (an antidepressant resistance rating score of three or more is considered an adequate trial) based on the Antidepressant Treatment History Form (ATHF) (Sackeim \& Sackeim, 2001); there is no upper limit on the number of treatment failures;
- +Ability to take oral medication;
- +Individuals with an eGFR above 40mL/min/1.73m2 and all blood work on clinical laboratory tests assessed as not clinically significant by study delegate physician at Screening (V1)
- +Individuals who are willing to and tapered off current antidepressants, antipsychotics, mood stabilizers, ketamine, esketamine, monoaminergic medicines, and stimulants used for augmentation of antidepressant therapy for a minimum of 2-weeks (or more depending on the medication) prior to Baseline (V2) and for the duration of the study and whose prescribing physician confirms that it is safe for them to do so;
- +Individuals who are willing to and have tapered off current inhibitors of 5'-diphospho-glucuronosyltransferase (UGT)1A9 and 1A10, aldehyde dehydrogenase inhibitors (ALDHs) and alcohol dehydrogenase inhibitors (ADHs) for a minimum of 2-weeks (or more depending on the medication) prior to Baseline (V2) and for the duration of the study and whose physician confirms that it is safe for them to do so;
- +Individuals must have a designated caregiver who is able to bring them home after treatment sessions and stay with them for at least 24 hours after psilocybin has been administered;
- +Individuals who are willing to not receive additional psychotherapy outside of the study throughout the active duration of the study; AND
- +Agreement to adhere to Lifestyle Considerations (section 4.5) throughout study duration.
- +Individuals who are capable of making their partner pregnant or who are capable of becoming pregnant: use of condoms or highly effective contraception for at least 1 month prior to screening and agreement to use such a method during study participation;
Exclusion
- −Presence of a relative or absolute contraindication to psilocybin, including a drug allergy, recent stroke history (within preceding six months) , uncontrolled hypertension (consistent blood pressure readings above 160/100 mmHg: measured twice with one hour between measurements), low blood pressure (blood pressure reading lower than 90/60mmHg), labile blood pressure (defined as episodes of both high and low blood pressure within a 24-hour period), recent myocardial infarction (within preceding six months), all types of cardiac arrhythmia, severe coronary artery disease (symptomatic with chest pain, angina heart palpitations or shortness of breath), or moderate to severe renal impairment (eGFR of below 40 mL/min ) or hepatic impairment (as a Child-Pugh score of B or C, determined through liver function tests);
- −An individual who meets any of the following criteria will be excluded from participation in this clinical trialInterventional studyA study where participants are given something to see what happens.Read more →:
- −Treatment with another investigational drug or other intervention within 30 days of ScreeningScreeningThe checks done before joining, to see whether a study fits.Read more → (V1);
- −Brain stimulation treatment within 6 months of Screening (V1);
- −Use of psychedelics within 6 months of Screening (V1);
- −Have initiated psychotherapy in the preceding 4 weeks prior to Screening (V1);
- −Have active suicidal ideation with intent and plan, certified by the Mental Health Act (MHA), determined by a study physician;
- −Any DSM-5 lifetime diagnosis of mania or hypomania, a schizophrenia-spectrum disorder, obsessive-compulsive disorder, psychotic disorder (unless substance induced or due to a medical condition), bipolar I or II disorder, paranoid personality disorder, borderline personality disorder, or neurocognitive disorder as determined by medical history and the MINI diagnostic interview;
- −Any first-degree relative with a diagnosis of schizophrenia-spectrum disorder; psychotic disorder (unless substance-induced or due to a medical condition), as determined by the family medical history form and discussions with the participant;
- −Presence of baselineBaselineYour starting measurements, taken before treatment begins.Read more → prolonged QTc (defined as greater than 450 milliseconds (ms) in men and greater than 460 ms in women) or Torsade de Pointes as measured by the ECG or a history of long QTc syndrome or related risk factors ;
- −Any other clinically significant physical illness including chronic infectious diseases or any other major concurrent illness that, in the opinion of the investigatorPrincipal investigatorThe doctor or researcher responsible for running the study at a site.Read more →, may interfere with the interpretation of the study results or constitute a health risk for the participant if they take part in the study.
- −Pregnant as assessed by a urine pregnancy test at Screening (V1) and Baseline (V2) or individual's that intend to become pregnant during the study or are breastfeeding;
- −Have a DSM-5 diagnosis of moderate to severe substance use disorder (recreational use of tobacco, alcohol, cannabis and prescribed opioids are permitted) within the preceding 6 months;
In plain language
Assembled directly from this trial’s registry record. Every sentence traces to a field below — nothing here is generated or interpreted.
What this study is
This study is testing a treatment for a condition.
Phase 2Phase 2A middle-stage study looking at what a treatment does and watching for side effects.Read more → — a middle-stage study in a few hundred people at most, looking at what the treatment does and watching for side effectsSide effectAn unwanted effect thought to be caused by the treatment itself.Read more →.
What is being given or done in this study: Psilocybin.
From the trial registry
Built from these fields:
- designModule.designInfo.primaryPurpose
- designModule.phases
- armsInterventionsModule.interventions[].name
How the study is run
Which group you would be placed in is decided by chance, like a coin flip — not by you and not by your doctor.
You, the study team, the people giving the treatment, and the people analysing the results would all be kept unaware of which group you are in until the study ends.
From the trial registry
Built from these fields:
- designModule.designInfo.allocation
- designModule.designInfo.maskingInfo.masking
Is there a placebo?
This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.
There are 2 groups in this study.
From the trial registry
Built from this field:
- armsInterventionsModule.armGroups[].type
Who the study is looking for
The study lists an age range of 18 years to 70 years.
The study is open to people of any sex.
The study does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.
These are the criteria the study lists. Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part.
From the trial registry
Built from these fields:
- eligibilityModule.minimumAge
- eligibilityModule.maximumAge
- eligibilityModule.sex
- eligibilityModule.healthyVolunteers
How big and how long
The study aims to enrol about 40 people.
The study is currently expected to finish around January 2029.
The main measurement is taken over: 24 months.
From the trial registry
Built from these fields:
- designModule.enrollmentInfo.count
- statusModule.completionDateStruct.date
- outcomesModule.primaryOutcomes[].timeFrame
What the study measures
Feasibility of evaluating the role of psilocybin monitors in a clinical trialInterventional studyA study where participants are given something to see what happens.Read more → of psilocybin therapy for treatment resistant depression — measured over 24 months.
From the trial registry
Built from these fields:
- outcomesModule.primaryOutcomes[].measure
- outcomesModule.primaryOutcomes[].timeFrame
Source: NCT07211438 on ClinicalTrials.gov. The full registry text is further down this page — this summary never replaces it.
Not medical advice. What do these terms mean?
What is being tested — in plain terms
About PsilocybinDrug
25 mg Psilocybin
From the trial registry — its own words, unedited.
What a drug is here: A medicine — a chemical or small-molecule treatment — given as the thing being studied.
Read the full explanation → · in clinical review
Common questions
Answered from this trial’s registry record. Where the record doesn’t say, these answers say so rather than filling the gap.
Am I eligible for this trial?
Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part. Concord cannot make that determination, and neither can any tool that has not examined you.
What the study lists: an age range of 18 years to 70 years.
The full inclusionInclusion criteriaThe things you must have or be for a study to consider you.Read more → and exclusion criteriaExclusion criteriaThe things that would prevent someone from taking part.Read more → are published on this page, exactly as the study team wrote them.
The useful next step is to bring this trial to your doctor. Answering a few questions first gives them something concrete to review.
From the trial registry
- eligibilityModule.minimumAge
- eligibilityModule.maximumAge
- eligibilityModule.eligibilityCriteria
Is there a placebo?
This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.
From the trial registry
- armsInterventionsModule.armGroups[].type
Would I know which treatment I am getting?
You, the study team, the people giving the treatment, and the people analysing the results would all be kept unaware of which group you are in until the study ends.
Which group you would be placed in is decided by chance, like a coin flip — not by you and not by your doctor.
From the trial registry
- designModule.designInfo.maskingInfo.masking
- designModule.designInfo.allocation
Who can join?
The study lists an age range of 18 years to 70 years.
It is open to people of any sex.
It does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.
Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can confirm whether a particular person can take part.
From the trial registry
- eligibilityModule.minimumAge
- eligibilityModule.maximumAge
- eligibilityModule.sex
- eligibilityModule.healthyVolunteers
How long would this take?
The study's main measurement is taken over: 24 months.
The study as a whole is currently expected to finish around 2029-01.
How long any one person takes part can differ from the study length. The study team can tell you what the schedule looks like in practice.
From the trial registry
- outcomesModule.primaryOutcomes[].timeFrame
- statusModule.completionDateStruct.date
How many people are taking part?
The study aims to enrol about 40 people.
From the trial registry
- designModule.enrollmentInfo.count
Where is this happening?
This study lists one location: Toronto, Ontario, Canada.
Sites can open and close during a study, so confirm with the team before travelling.
From the trial registry
- trial_locations
About This Trial
Psilocybin, the chemical component of "magic mushrooms", has been administered with psychological support in several randomized clinical trials (RCTs) showing large and sustained antidepressant effects. The purpose of this study is to determine the role of psilocybin monitors on the effects of psilocybin therapy in adults with treatment resistant depression.
Think this trial might be right for you?
Complete a quick intake form and we will match you with this and other relevant trials based on your medical profile.
See if this trial could fit youThis page is for informational purposes only and does not constitute medical advice. Clinical trial eligibility can only be determined by the trial site after proper screening. Trial information is sourced from ClinicalTrials.gov and may not reflect the most current status. Always consult your healthcare provider before making decisions about clinical trial participation.