RecruitingIMmunotherapy: Prospective Assessment of Cannabis Treatment in CancerThe purpose of this research is to assess how patients with cancer being treated with Immune Checkpoint Inhibitors (ICI) manage symptoms related to cancer and/or its treatment. Patients use a variety of ways to manage symptoms including traditional and alternative treatments including cannabis, acupuncture, etc. This research will have an important impact on our knowledge of cancer symptom management, and ultimately improve patient care and safety. Participants will complete online surveys and 7 days of ecological momentary assessments at 0, 1, 2, 4, 6, 9 and 12 month to compare the cannabis users and non cannabis users symptoms.