Cannabis use disorder Mental and Behavioural Disorders Mental and behavioural disorders due to use of cannabinoids
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. 34 patients with DSM-5 Diagnosis of Cannabis Use Disorder (CUD) 2. 17 sex and age-matched healthy controls 3. Aged between 18 and 50 years inclusive 4. Informed consent 5. Available to complete the study 6. Negative serum pregnancy test at screening (for women of childbearing potential)
Exclusion criteria
Exclusion criteria: 1. Psychiatric disorder (other than CUD in CUD patients) 2. Neurological disorder 3. Significant medical condition such as cancer, liver disease, hepatic impairment, renal disease, neuroleptic malignant syndrome, non-traumatic rhabdomyolysis, pheochromocytoma, or glaucoma 4. Current treatment with antipsychotic or benzodiazepine or monoamine oxidase inhibitor 5. Metal implant 6. Participation in a research/clinical study involving radiation exposure in the past 12 months 7. Pregnancy 8. Breastfeeding 9. Lack of safe contraception
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 1. Cannabis use, measured using the Alcohol, Smoking and Substance Involvement Screening Test (ASSIST) 2. DA synthesis capacity and storage, measured using [18F]-FDOPA Ki uptake values (6-fluoro-L-DOPA (or Fluorodopa) Measured at baseline (including PET scan), within one week of the two months treatment (including PET scan) and at two months follow-up (excluding PET scan) | — |
Secondary
| Measure | Time frame |
|---|---|
| 1. Time to smoke 1 gram of cannabis 2. Total scores on the Craving Experience Questionnaire and on the Dimensional Anhedonia Rating Scale 3. Theta/alpha power EEG measure 4. Stop-signal reaction time in the Stop Signal Task 5. Equivalence point in the Delay-Discounting Task 6. Average number of pumps delivered in the Balloon Analogue Risk Task Measured at baseline (including PET scan), within one week of the two months treatment (including PET scan) and at two months follow-up (excluding PET scan) | — |
Countries
Switzerland