PTSD Clinical Trial
— CANPOSTOfficial title:
Effect of Extended Cannabis Abstinence on PTSD Symptoms
Verified date | April 2024 |
Source | Centre for Addiction and Mental Health |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
This will be a 12-week randomized trial. Outpatients and patients from the Mood and Anxiety program at the Centre for Addiction and Mental Health (CAMH) with a current diagnosis of post-traumatic stressed disorder (PTSD) and cannabis-use disorder (CUD) will be randomized to receive individual motivational interviewing therapy and contingency management (n = 12) or individual motivational interviewing therapy alone (control group, n = 12) after enrolment.
Status | Recruiting |
Enrollment | 24 |
Est. completion date | September 1, 2024 |
Est. primary completion date | September 1, 2024 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years to 55 Years |
Eligibility | Inclusion Criteria: 1. Subjects aged between 18 and 55 years (from both sexes [or genders]); 2. Diagnosed with CUD (moderate or severe) according to the Structured Clinical Interview for DSM-IV (SCID) (mode of cannabis consumption can be inhalation or ingestion); 3. Diagnosis of current (past 30 days) PTSD, using the CAPS-5 on screening; 4. On antidepressant medication(s) for at least 1 month (to ensure safety and homogeneity as PTSD treatment of our population); 5. Be able to provide written informed consent; and 6. Be able to communicate in English. Exclusion Criteria: 1. diagnosed with a severe or unstable medical illness that precludes safe participation in the study as per the study physician; 2. diagnosed with schizophrenia, schizoaffective disorder, or bipolar disorder or current acute psychosis or mania based on DSM-5 criteria; 3. current suicidality risk as indicated by the Columbia Suicide Severity Rating Scale (C-SSRS) with concurrence after the study physician's evaluation if the response to C-SSRS questions 1 or 2 is "yes" 34; and 4. have pain interfering with normal function as reported by the 12-Item Short Form Survey (SF-12) (moderate or higher interference). |
Country | Name | City | State |
---|---|---|---|
Canada | Centre for Addiction and Mental Health | Toronto | Ontario |
Lead Sponsor | Collaborator |
---|---|
Centre for Addiction and Mental Health |
Canada,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Severity of PTSD symptoms, as measured with the Clinician-Administered PTSD Scale for DSM-5 (CAPS-5) at week 4 | Changes in CAPS-5 during the study phase between the group that achieved abstinence and the group that did not. In addition, we will record changes in each PTSD symptom category, which will all be part of the larger trial analysis. | Week 0-4 | |
Secondary | Changes in cognitive function, as measured with various Cambridge Automated Neuropsychological Test Automated Battery (CANTAB) cognitive tests | Changes between abstainers and non-abstainers on cognitive testing during the study phase. | Week 0-4 |
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