- 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, Stage IVB Esophageal Adenocarcinoma, Stage IVB Esophageal Squamous Cell Carcinoma, Stage IVB Gastric Cancer, Stage IVB Gastroesophageal Junction Adenocarcinoma, Metastatic Anal Canal Carcinoma, Metastatic Colorectal Carcinoma, Metastatic Esophageal Carcinoma, Metastatic Gastric Carcinoma, Metastatic Gastroesophageal Junction Adenocarcinoma, Metastatic Hepatocellular Carcinoma, Metastatic Malignant Digestive System Neoplasm, Metastatic Small Intestinal Carcinoma, Pancreatobiliary Carcinoma, Pathologic Stage IV Gastric Cancer AJCC v8, Pathologic Stage IVA Esophageal Adenocarcinoma AJCC v8, Pathologic Stage IVA Esophageal Squamous Cell Carcinoma AJCC v8, Pathologic Stage IVB Esophageal Adenocarcinoma AJCC v8, Pathologic Stage IVB Esophageal Squamous Cell Carcinoma AJCC v8, Pathologic Stage IVB Gastroesophageal Junction Adenocarcinoma AJCC v8, Postneoadjuvant Therapy Stage IV Esophageal Squamous Cell Carcinoma AJCC v8, Postneoadjuvant Therapy Stage IV Gastric Cancer AJCC v8, Postneoadjuvant Therapy Stage IV Gastroesophageal Junction Adenocarcinoma AJCC v8, Postneoadjuvant Therapy Stage IVA Esophageal Adenocarcinoma AJCC v8, Postneoadjuvant Therapy Stage IVA Esophageal Squamous Cell Carcinoma AJCC v8, Postneoadjuvant Therapy Stage IVA Gastroesophageal Junction Adenocarcinoma AJCC v8, Postneoadjuvant Therapy Stage IVB Esophageal Adenocarcinoma AJCC v8, Postneoadjuvant Therapy Stage IVB Esophageal Squamous Cell Carcinoma AJCC V8, Postneoadjuvant Therapy Stage IVB Gastroesophageal Junction Adenocarcinoma AJCC v8, Stage IV Anal Cancer AJCC v8, Stage IV Colorectal Cancer AJCC v8, Stage IV Hepatocellular Carcinoma AJCC v8, Stage IVA Colorectal Cancer AJCC v8, Stage IVA Hepatocellular Carcinoma AJCC v8, Stage IVB Colorectal Cancer AJCC v8, Stage IVB Hepatocellular Carcinoma AJCC v8, Stage IVC Colorectal Cancer AJCC v8
- Interventions
- Radiation Therapy (RT)
- Radiation
- Lead sponsor
- University of California, San Francisco
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 28 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2028
- U.S. locations
- 2
- States / cities
- San Francisco, California • Walnut Creek, California
Source: ClinicalTrials.gov public record
Updated Oct 5, 2025 · Synced May 21, 2026, 6:35 PM EDT