Docetaxel for gastric and esophageal carcinomas.

Docetaxel (Taxotere) has been successfully investigated in the therapy for advanced gastroesophageal tumors as both a single agent and in combination regimens. As a single agent, phase II study results demonstrate an overall response rate of 17% to 24%, with occasional complete responses in a disease in which complete responses are rare. These figures classify docetaxel among the most active agents for the disease. Further research initiatives in gastric cancer have evaluated the combined use of docetaxel with traditionally established agents, such as cisplatin and fluorouracil (5-FU). The rationales for the combined use of docetaxel with these agents include the in vitro demonstration of a lack of complete cross-resistance and nonoverlap-ping side-effect profiles. Phase II study results of docetaxel-based combinations demonstrate high overall response rates and progression-free survival, comparable with results obtained with established three- and four-drug regimens. Therapy is generally well tolerated, with a predominant toxicity of hematologic neutropenia. Docetaxel-based combination regimens are currently undergoing evaluation in randomized phase III trials in comparison with established standard regimens. While previous combination chemotherapy regimens have failed to improve survival over single-agent therapy, the aim for incorporation of docetaxel with other active agents is to improve palliation and possibly survival of patients with gastric cancer.