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.
Additional locations may be listed on ClinicalTrials.gov for NCT04221893.
Locations matching your search criteria
United States
California
San Francisco
University of California San FranciscoStatus: Active
Contact: Mary U. Feng
Phone: 415-502-7222
PRIMARY OBJECTIVE:
I. To determine whether radiation therapy can convert overall response rates from progressive disease to stable or responsive disease as measured by Response Evaluation Criteria in Solid Tumors (RECIST) version (v.) 1.1.
SECONDARY OBJECTIVES:
I. To define overall response rate by immune-Modified Response Evaluation Criteria in Solid Tumors (iRECIST) criteria.
II. To determine time to progression.
III. To determine overall survival.
IV. To determine local control in radiated lesion(s).
V. To characterize the effect of distant radiation on unirradiated target lesions.
VI. To describe the incidence of new metastatic lesions.
VII. To determine treatment safety by Common Terminology Criteria for Adverse Events (CTCAE) v. 5.0.
VIII. To describe time to new systemic therapy.
EXPLORATORY OBJECTIVES:
I. To define radiation-induced effects on circulating immune cells.
II. To describe remodeling of the circulating T cell repertoire by deep sequencing of variable, diversity and joining (VDJ) regions of T cell receptors (TCRs).
III. To describe changes in circulating tumor deoxyribonucleic acid (DNA) (ctDNA).
OUTLINE:
Patients undergo radiation therapy for a total of 5 treatments over 5-9 calendar days in the absence of disease progression or unacceptable toxicity.
After completion of study treatment, patients are followed up at 14 day, 6 months, and then up to 36 months.
Lead OrganizationUniversity of California San Francisco
Principal InvestigatorMary U. Feng
