Springfield

Researchers are evaluating the effects of cannabis and cannabinoid use on cancer-related symptoms in adults newly diagnosed with breast, colorectal, melanoma, non-Hodgkin lymphoma, or non-small cell lung cancer. This study focuses on patients who are planning to receive or have recently started systemic cancer treatments such as chemotherapy and immune checkpoint inhibitors (ICIs) targeting PD-1, PD-L1, or CTLA-4. The goal is to understand how cannabis use may be associated with symptom changes over time. Participants are enrolled in a non-interventional study where no experimental treatment is given. They complete surveys about their symptoms and cannabis use, and their medical records are reviewed regularly. The study tracks cancer-related symptoms monthly for up to 12 months after enrollment, allowing researchers to observe symptom patterns during ongoing cancer treatment. An optional substudy is available at select sites for patients with non-small cell lung cancer receiving paclitaxel and ICIs. During the study, participants complete online surveys in English or Spanish at their convenience, either at home or in clinic. Medical records are examined to gather information on treatments and health status. The main outcome measured is cancer-related symptoms, assessed monthly for one year. Safety monitoring includes ensuring participants have an expected life expectancy of at least six months and are not enrolled in hospice. The study aims to enroll 2000 patients across multiple sites in the United States.