Preliminary Efficacy Trial of a Digital Intervention for Depression and Cannabis Use
AMP-C: A Digital Therapeutic for Reward Dysfunction in Co-Occurring Depression and Cannabis Use
Massachusetts General Hospital
80 participants
Feb 1, 2026
INTERVENTIONAL
Conditions
Summary
The purpose of this study is to examine the feasibility, acceptability, and preliminary efficacy of a digital intervention for co-occurring cannabis use and depression. Participants will be randomized to complete Amplification of Positivity - Cannabis Use (AMP-C) or symptom tracking. The main outcomes will include changes in depressive symptoms and cannabis use, as well as usability ratings.
Eligibility
Inclusion Criteria8
- Aged ≥ 18 years
- Resides in the United States
- Able to read and understand English and willing to provide informed consent/comply with the study protocol
- Moderate depressive symptom severity, as indicated by the Patient Health Questionnaire-9 (PHQ-9)
- Problematic cannabis use, as indicated by the Cannabis Use Disorder Identification Test - Revised (CUDIT-R)
- Current elevated anhedonia, as indicated by the PHQ-9
- Interest in receiving treatment for their cannabis use and depression
- Meet criteria for current MDD and CUD per the DSM-5
Exclusion Criteria4
- History of a psychotic disorder or bipolar disorder type I/II
- Active suicidal ideation or intent based on the Columbia-Suicide Severity Rating Scale
- Current psychotherapy engagement
- Changes in psychotropic medication within six weeks of the start of study
Interventions
AMP-C is a smartphone-based digital intervention that includes activities that focus on positivity (e.g., noticing and capitalizing on positive events) to increase positive emotions, thoughts, and behaviors. The role and impact of CU on the maintenance of depression and reward dysfunction (and vice versa), is intertwined throughout the intervention.
Locations(1)
View Full Details on ClinicalTrials.gov
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NCT06878859