Locally Advanced and Metastatic Gastric Cancer

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Abstract
The management of gastric cancer remains a challenge. In recent years, the most important advances have been achieved in the adjuvant setting for patients with locally advanced disease, where significant survival benefits have been demonstrated for both perioperative chemotherapy and adjuvant chemoradiotherapy. These findings have changed the standard of care for patients with resectable disease. In the setting of metastatic gastric cancer, the development of new cytotoxic regimens must consider the balance between efficacy and toxicity in patients whose overall prognosis is poor. Major advances in recent years include the development of orally administered fluoropyrimidine analogues, which can be used in place of intravenous fluorouracil, and the addition of newer agents such as oxaliplatin and docetaxel, which have demonstrated efficacy in patients with advanced disease. Targeted therapies have had a major impact on the management of certain malignancies, and while their evaluation in the treatment of advanced gastric cancer remains early, it is likely that these agents will continue to be developed and studied in combination with chemotherapy. This article reviews recent advances in the use of chemotherapy for advanced gastric cancer. Targeted therapies, their mechanisms of action and emerging data supporting their use in gastric cancer are also discussed. The two randomized phase III trials supporting adjuvant therapy for locally advanced, resectable gastric cancer are discussed in detail, together with strategies for future trials in this area. Overall, there remains optimism that further incremental gains will be achieved with future studies combining chemotherapy, radiotherapy and targeted therapies, both in the adjuvant and metastatic disease settings.

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