This clinical trial is focused on studying treatments for a type of cancer called gastric cancer, which affects the stomach, and gastro-esophageal junction cancer, which occurs where the stomach meets the esophagus. The study involves using a combination of medications to see how safe and feasible they are for patients with these cancers. The medications being tested include capecitabine, oxaliplatin, docetaxel, and atezolizumab. Atezolizumab is also known by its code name RO5541267. These medications are used to treat cancer by either killing cancer cells or helping the immune system fight the cancer.
The purpose of the study is to explore the safety and feasibility of these medications when given before surgery to remove the cancer. Patients will receive these treatments over a period of time before their surgery. The study will monitor how the body responds to the medications and any side effects that may occur. Some patients will receive a placebo, which is a substance with no active medication, to compare the effects of the actual medications.
Throughout the study, patients will undergo various tests and procedures to assess the impact of the treatment on their cancer. This includes checking how the cancer responds to the treatment and any changes in the immune system. The study aims to gather information on how well these treatments work together and their safety for patients with gastric and gastro-esophageal junction cancer.



The Netherlands