RecruitingClinical trialDisease Outcomes and Toxicities in Patients With Gastrointestinal and Sarcomatous MalignanciesThis prospective, single-institution, observational study explores disease outcomes and toxicities in subjects with gastrointestinal malignancies and sarcoma (bone and soft tissue) who are being treated with standard-of-care therapies including radiotherapy. Recent advances in treatment approaches affected disease outcomes and toxicities. Prospective monitoring of disease outcomes and toxicities using standardized assessments will provide information about recent changes in the standard of care and further refine treatment approaches and prospective clinical trial design.