Journal
ANNALS OF ONCOLOGY
Volume 20, Issue 4, Pages 615-620Publisher
ELSEVIER
DOI: 10.1093/annonc/mdn693
Keywords
adjuvant; advanced breast cancer; aromatase inhibitor; celecoxib; exemestane
Categories
Funding
- Complete Healthcare Communications, Inc
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Aromatase inhibitors (AIs) are well established in the treatment of metastatic hormone-sensitive breast cancer in postmenopausal women. Cyclooxygenase (COX)-2 inhibitors have demonstrated efficacy in reducing cancer risk in animal and human studies. In several preclinical studies, combination AI plus COX-2 inhibitor therapy has shown a synergistic antitumor effect. This review describes the utility of AI plus COX-2 inhibitor therapy and discusses the completed and ongoing clinical trials investigating treatment with the AI exemestane and the COX-2 inhibitor celecoxib in the neo-adjuvant and metastatic breast cancer settings. In general, combination therapy had comparable or better efficacy compared with AI monotherapy using the end points of progression-free survival, overall response rate, clinical benefit rate, time to progression, and duration of clinical benefit. All therapies were well tolerated. There appeared to be a beneficial impact on serum lipid levels for patients receiving combination therapy in a neo-adjuvant trial despite the known cardiovascular toxicity risk associated with COX-2 inhibitors. In conclusion, AIs plus COX-2 inhibitors have shown promising efficacy and safety for the treatment of patients with metastatic breast cancer. Careful monitoring during future trials will be necessary to accurately assess the risk-benefit ratio of combination therapy.
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