Esophageal and Esophagogastric Junction cancer...Trastuzumab should be added to first-line chemotherapy for HER2 overexpressing metastatic adenocarcinoma...Esophageal and Esophagogastric Junction Cancers: HER2 overexpression positive adenocarcinoma...Fluoropyrimidine (fluorouracil or capecitabine) and oxaliplatin and trastuzumab…Fluoropyrimidine (fluorouracil or capecitabine) and cisplatin and trastuzumab…Esophageal and Esophagogastric Junction Cancers: Other Recommended Regimens (trastuzumab should be added to first-line chemotherapy for HER2 overexpression positive adenocarcinoma)...Fluorouracil, and irinotecan…Paclitaxel with or without cisplatin or carboplatin…Docetaxel with or without cisplatin…Fluoropyrimidine (fluorouracil or capecitabine)…Docetaxel, cisplatin or oxaliplatin, and fluorouracil…Docetaxel, carboplatin, and fluorouracil (category 2B)…