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| Name | Class |
|---|---|
| University of British Columbia | OTHER |
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The goal of this randomized controlled trial is to evaluate the safety, feasibility, and efficacy of psilocybin assisted therapy as an intervention to reduce symptom burden in adult patients (aged 18-65) with persisting symptoms after concussion (PSaC).
This trail will test the following 2 aims:
AIM 1 : To test the safety and feasibility of an active psilocybin-assisted psychotherapy to an active control for patients with PSaC.
AIM 2: To evaluate the efficacy of an active psilocybin-assisted psychotherapy compared to an active control as a treatment for PSaC.
Participants will be asked to:
The overall objective of this study is to evaluate the safety, feasibility, and efficacy of psilocybin assisted therapy administered with Acceptance and Commitment Therapy (ACT) as an intervention to reduce symptom burden in patients with persisting symptoms after concussion (PSaC).
This trail will test the following 2 aims:
AIM 1 : To test the safety and feasibility of an active/high dose (25mg) psilocybin-assisted psychotherapy to an active control (1mg) for adults with PSaC. Safety will be determined through the reporting of adverse events and response following psilocybin for each participant up to 6-months. Feasibility will be determined through recruitment, enrollment, and adherence rates.
AIM 2: To evaluate the efficacy of an active/high dose (25mg) psilocybin-assisted psychotherapy compared to an active control (1mg) as a treatment for PPCS at 1-week, 4 weeks, 3 months, and 6 months post-psilocybin administration. The primary efficacy outcome will be the change in PSaC burden (RPQ).
The secondary efficacy outcomes will include measures of headache, dizziness, mood, anxiety, post-traumatic stress, cognitive flexibility, emotional regulation, and quality of life.
A total of 40 male and female patients between the ages of 18-65 with a diagnosis of mild traumatic brain injury (American College of Rehabilitation Medicine 2023 criteria) who meet criteria for persisting symptoms after concussion (ICD-10) within 3 months to 5 years will be recruited from Calgary brain injury clinics and the community.
All patients will undergo a thorough, 2-part screening procedure. Eligible participants will be randomly allocated 1:1 to either the high dose (20 participants) or low dose (20 participants) psilocybin groups. All participants will be asked to attend a baseline session consisting of clinical and behavioural outcome measures, followed by a pre-dosing psychoeducation session. Following the single dosing session, participants will complete 5 weekly ACT sessions. Outcome measure assessments will be repeated at 1-week, 4 weeks, 3 months, and 6 months post-dosing.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| High dose (25mg) | Experimental | High Dose (25mg) PEX010 (Oral Psilocybin), 25mg; single dose (20 participants) administered 24hrs prior to first ACT session |
|
| Low dose (1mg) | Active Comparator | Low Dose (1mg) PEX010 (Oral Psilocybin), 1mg; single dose (20 participants)administered 24hrs prior to first ACT session |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Psilocybin | Drug | See treatment arm description. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Incidence of Treatment-Emergent Adverse Events [Safety and Tolerability] | Safety will be determined based on adverse reactions and symptom reporting (categorized as mild, moderate, and severe) | Throughout study completion, an average of 6 months |
| Study protocol efficacy | The primary efficacy outcome is the Rivermead Post-Concussion Symptoms Questionnaire (RPQ).The RPQ assesses the severity of 16 commonly experienced PSaC symptoms using a scale of 0 ("not experienced") to 4 ("severe problem"), with higher scores indicating greater PSaC symptom burden. | Throughout study completion, an average of 6 months |
| Study protocol feasibility | The feasibility will be determined based on recruitment (greater than 30% of those screened eligible), attendance (70% intervention appointment attendance), retention (70% complete study protocol) | Screening, enrolment, intervention, and participation up to study end point (6-months) |
| Measure | Description | Time Frame |
|---|---|---|
| Montgomery-Asberg Depression Rating Scale Self report (MADRS-S) | The MADRS is a 10-item assessment of depressive symptoms using a recall period of the past 7 days. Total scores range from 0-60, with higher scores indicating greater depression. | Throughout study completion, an average of 6 months [assessed at baseline, and 1-week, 4 weeks, 3 months, and 6 months post-dosing] |
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In order to be eligible to participate in this study, an individual must meet all of the following criteria:
An individual who meets any of the following criteria will be excluded from participation in this study:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Chantel T Debert, MD MSc FRCPC | Contact | (403) 944-4500 | cdebert@ucalgary.ca |
| Name | Affiliation | Role |
|---|---|---|
| Chantel T Debert, MD MSc FRCPC | University of Calgary | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of Calgary | Recruiting | Calgary | Alberta | T2N 2T9 | Canada |
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| ID | Term |
|---|---|
| D001924 | Brain Concussion |
| ID | Term |
|---|---|
| D000070642 | Brain Injuries, Traumatic |
| D001930 | Brain Injuries |
| D001927 | Brain Diseases |
| D002493 | Central Nervous System Diseases |
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| ID | Term |
|---|---|
| D011562 | Psilocybin |
| ID | Term |
|---|---|
| D026121 | Indole Alkaloids |
| D000470 | Alkaloids |
| D006571 | Heterocyclic Compounds |
| D007211 | Indoles |
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Double-blinded randomized control trial
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The group assignments to active (25mg) and control (1mg) psilocybin-assisted therapy will be based on a blocked randomization list (10 participants per block) using sealed envelopes created by an employee of the University of Calgary, who will not be involved in the conduct, or the analysis of the study.
The pharmacy administering the psilocybin will be responsible for maintaining the master randomization code list and only the technician preparing the samples will have access to the envelopes and code list.
When a new study ID is generated, the technician is to verify the randomization and prepare the participant's study intervention accordingly. Unblinding will only occur once the entire study is completed, and the database has been locked.
The trials active intervention and comparator will be provided by the manufactures and will be identical in shape, colour, and weight.
| Generalized Anxiety Disorder-7 (GAD-7). | The GAD-7 is a 7-item tool which assess anxiety. Individuals rate how often they have been bothered by seven listed problems and score their responses from 0 ("not at all") to 3 ("nearly every day"). Total scores for anxiety severity are: 0-4: minimal anxiety; 5-9: mild; 10-14: moderate; 15-21: severe anxiety. | Throughout study completion, an average of 6 months [assessed at baseline, and 1-week, 4 weeks, 3 months, and 6 months post-dosing] |
| Sleep and Concussion Questionnaire (SCQ) | During the SCQ-initial, participants use the timeframe of the 6-months prior to the concussion, and since the concussion. The SCQ-follow-up will have a recall period of since the most recent SCQ was completed. Total scores of 0-7 indicate no clinically significant change; 8-15: subclinical change; 16-22: clinical changes of moderate severity; 23-36: clinically severe changes in sleep or wakefulness. | Throughout study completion, an average of 6 months [assessed at baseline, and 1-week, 4 weeks, 3 months, and 6 months post-dosing] |
| Headache Impact Test (HIT-6). | This 6-item tool assesses how headache intensity impacts daily life functioning. Headache intensity and frequency are measured from "never" to "always", with greater scores indicating greater impact on daily life function due to headache. Total scores of 49 or less indicate headaches have little to no impact on daily life; 50-55: headaches have some impact on life; 56-59: headaches have substantial impact on life; 60 or more: headaches have severe impact on life. | Throughout study completion, an average of 6 months [assessed at baseline, and 1-week, 4 weeks, 3 months, and 6 months post-dosing] |
| Dizziness Handicap Questionnaire (DHI) | A 25-item self-reported questionnaire which assesses the impact of dizziness on daily life. Scores from functional, emotional, and physical domains are summed to give a score between 0-100 with greater scores indicating greater impact. | Throughout study completion, an average of 6 months [assessed at baseline, and 1-week, 4 weeks, 3 months, and 6 months post-dosing] |
| PTSD Checklist for DSM-5 (PCL-5) | A 20-item self-report measure that assesses the 20 DSM-5 symptoms of PTSD. Greater symptom scores indicate greater symptom burden | Throughout study completion, an average of 6 months [assessed at baseline, and 1-week, 4 weeks, 3 months, and 6 months post-dosing] |
| The Quality of Life after Brain Injury (QOLIBRI) | This questionnaire measures health-related quality of life specific to individuals after traumatic brain injury. Covers six domains of health-related quality of life (cognition, self, daily life and autonomy, social relationships, emotions, and physical problems) to provide an overall score, with higher scores indicating greater quality of life. | Throughout study completion, an average of 6 months [assessed at baseline, and 1-week, 4 weeks, 3 months, and 6 months post-dosing] |
| Difficulties in Emotion Regulation Scale (DERS) | A 36-item self-report scale designed to assess multiple aspects of emotion dysregulation. Six subscale scores and a total score are calculated. | Throughout study completion, an average of 6 months [assessed at baseline, and 1-week, 4 weeks, 3 months, and 6 months post-dosing] |
| Think Aloud Task | The Thinking Aloud Task (TAT) measures cognitive flexibility in relation to thought dynamics, tapping into the speed and expansiveness of thoughts, which relate to real-time emotion regulation and overall social and emotional well-being. | Throughout study completion, an average of 6 months [assessed at baseline, and 1-week, 4 weeks, and 3 months post-dosing] |
| Probabilistic Reversal Learning Task | The Probabilistic Reversal Learning (PRL) task is a measure of reward-related cognitive flexibility that requires participants to choose a shape that fits an inferred rule and adapt behavior once rules switch | Throughout study completion, an average of 6 months [assessed at baseline, and 1-week, 4 weeks, and 3 months post-dosing] |
| The Acceptance and Action Questionnaire II (AAQ-II) | A 7-item questionnaire measuring psychological flexibility. Scores range from 0 to 49 with higher scores indicating greater psychological flexibility | Throughout study completion, an average of 6 months [assessed at baseline, and 1-week, 4 weeks, 3 months, and 6 months post-dosing] |
| The Acceptance and Action after Brain Injury Questionnaire (AAQ-ABI) | A 7-item questionnaire which measures psychological flexibility about the thoughts and feelings related to brain injury. Scored on a 5-point Likert scale, scores range from 0-36 with higher scores indicating greater psychological flexibility | Throughout study completion, an average of 6 months [assessed at baseline, and 1-week, 4 weeks, 3 months, and 6 months post-dosing] |
| Cognitive Fusion Questionnaire (CFQ-7) | A 7-point Likert scale measuring cognitive fusion. Scores range from 0 to 49 with higher scores indicating greater fusion with one's thoughts. | Throughout study completion, an average of 6 months [assessed at baseline, and 1-week, 4 weeks, 3 months, and 6 months post-dosing] |
| Bergs Card Sorting Task | Cognitive flexibility task - Participants must select the stimulus that is different from others based on feedback and adapt their responses once the criteria for correct choice switches. Perseverative errors are defined as the number of instances in which three incorrect responses are made based on a previous rule, and they are thought to reflect less cognitive flexibility (or cognitive rigidity) | Throughout study completion, an average of 6 months [assessed at baseline, and 1-week, 4 weeks, and 3 months post-dosing] |
| D009422 | Nervous System Diseases |
| D006259 | Craniocerebral Trauma |
| D020196 | Trauma, Nervous System |
| D016489 | Head Injuries, Closed |
| D014947 | Wounds and Injuries |
| D014949 | Wounds, Nonpenetrating |
| D006574 |
| Heterocyclic Compounds, 2-Ring |
| D000072471 | Heterocyclic Compounds, Fused-Ring |
| D014363 | Tryptamines |
| D054836 | Indolizidines |
| D007212 | Indolizines |