1408P Efficacy of immunotherapy in the first line treatment of advanced upper gastrointestinal tract malignancies: A pooled analysis of randomized clinical trials

Upper gastrointestinal tract malignancies include cancers of the oesophagus, gastro-esophageal junction and stomach. For the management of advanced disease, chemotherapy remains the primary treatment option in the 1st line, but the use of immune checkpoint inhibitors is a rapidly evolving field of research.