Clinical trial Recruiting at 1 site Observational Ages 18 and up

Cannabis use in cancer patients: keeping a cancer cannabis journal on a mobile app

Official title: A Pilot Companion Cancer Cohort Study to the Wake Forest COSMIC Study (WF-2304) in Patients Reporting Cannabis Use Followed With an Application-Based Cannabis Journal

Run by MaineHealth · NCT07089225 · Data updated 2026-11-12

This study tests how cancer patients who use cannabis can track their use and experiences using a smartphone app.

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Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment45 (estimated)
SponsorMaineHealth
Academic / other
Drugs / interventionschemotherapy, Radiation
Locations1 site (Scarborough, Maine)
StatusRecruiting
StartedOctober 17, 2025
Main results expectedMay 30, 2027
Study endsDecember 31, 2027
Registry record updatedOctober 22, 2026
Trial IDNCT07089225 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (18+) with a cancer diagnosis who are actively using cannabis and can use a smartphone or tablet to log information in the Releaf app.

Probably not a fit

Patients who do not use cannabis or cannot access or use the mobile journaling app may not benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is an observational study enrolling adults with cancer who report using cannabis and can use the Releaf app to journal their cannabis experiences. Participants must have internet access, English proficiency, and the ability to provide consent and use text messaging. The study aims to collect data on cannabis use patterns and related considerations in a real-world cancer setting. Recruitment is coordinated through MaineHealth Cancer Care in Scarborough, Maine, with support from the National Cancer Institute.

Why it matters

Potential benefit: Participants may gain insights into how cannabis affects their symptoms and treatment experiences through structured journaling.

How similar studies have gone: Prior observational work has explored cannabis use in cancer patients, but this exact app-based journaling approach is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients must be 18 years of age or older and able to give verbal informed consent to participate.
* Patients must be able to speak, read and understand English.
* Patients must report use of cannabis at time of study participation.
* Patients must have access to internet and ability to download Releaf™ App (MoreBetter, Ltd.) to a smartphone or tablet and must use Releaf™ App (MoreBetter, Ltd.) for cannabis journaling.
* Patients must be able to send and receive text messages, and be able to interact with web-pages on smartphone or tablet.
* There are 2 scenarios that patients are eligible for participation, and are listed below:

  1. Patients must have a cancer diagnosis for which they are receiving active therapy defined as follows:

     * Surgery - must be within a 30-day pre- and/or post-operative (peri-operative) window if single modality of care. Patients must be 18 years of age or older and able to give verbal informed consent to participate.
     * Radiation - must be within a 30-day pre- (simulation planning phase) and/or post-radiation window if single modality of care.
     * Any anticancer systemic therapy including hormonal, biologic, targeted, and/or cytotoxic chemotherapy. Understandably, numerous patients recruited under surgery and/or radiation will receive systemic therapy as part of combined modality therapy, which is permissible. Regardless, all details regarding cancer diagnosis, stage, and treatment will be collected from the EMR, which will be detailed in the informed consent document.
  2. Any patient in follow-up by their primary oncology care provider and/or AYA and cardio-oncology survivorship clinic(s).
* All patients must be treated within the MHCCN thus ensuring access to clinical data in our system-wide EMR (Epic).
* Patients must obtain their cannabis either from a medical-use store, adult-use (recreational) store or both. Patients must obtain cannabis ONLY from medical/recreational stores. Illicit (or homegrown) sources are strictly prohibited.

Where it's running

  • MaineHealth Cancer Care
    Scarborough, Maine, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
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Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.