Symptom Inventory for Gastrointestinal Stromal Tumors

The goal of this research study is to better understand the symptoms experienced by patients with GIST. There are 3 parts to this study. In Part 1, participants will complete 1 set of interviews and questionnaires about GIST symptoms. In Part 2, the importance of some symptoms to patients with GIST will be rated by doctors, nurses, patients, and family caregivers. In Part 3, participants will complete questionnaires about GIST symptoms over 1 year. You are being asked to take part in Part 3 of the study.