1447P - S-1 maintenance therapy in non-Asian patients with advanced, Her-2 negative esophagogastric adenocarcinoma  First results of the international MATEO trial initiated by the AIO
S-1
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: Identify all the mentioned drugs in the given text. Text may or may not contain drug. If they contain more than 1 drug, use ";" as delimiter and join them. ### Input: 1447P - S-1 maintenance therapy in non-Asian patients with advanced, Her-2 negative esophagogastric adenocarcinoma  First results of the international MATEO trial initiated by the AIO ### Output: S-1