Radiation Therapy for the Treatment of Metastatic Gastrointestinal Cancers

This phase II trial studies how well radiation therapy works for the treatment of gastrointestinal cancer that are spreading to other places in the body (metastatic). Radiation therapy uses high energy x-rays to kill cancer cells and shrink tumors. This trial is being done to determine if giving radiation therapy to patients who are being treated with immunotherapy and whose cancers are progressing (getting worse) can slow or stop the growth of their cancers. It may also help researchers determine if giving radiation therapy to one tumor can stimulate the immune system to attack other tumors in the body that are not targeted by the radiation therapy.

NCT Number	NCT04221893
Lead Sponsor	University of California, San Francisco Collaborators: Varian Medical Systems
Conditions	Stage IV Esophageal Adenocarcinoma, Stage IV Esophageal Squamous Cell Carcinoma, Stage IV Gastric Cancer, Stage IV Adenocarcinoma of the Gastroesophageal Junction, Stage IVA Esophageal Adenocarcinoma, Stage IVA Esophageal Squamous Cell Carcinoma, Stage IVA Gastric Cancer, Stage IVA Adenocarcinoma of the Gastroesophageal Junction +36 more
Enrollment	28 participants
Start Date	2020-08-07
Primary Completion	2027-04-30 (estimated)
Study Completion	2028-04-30 (estimated)
Updated on ClinicalTrials.gov	2026-08-14