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Capecitabine chemotherapy for metastatic colorectal cancer. Chemical structure, combinations and efficacy
G Koukourakis1, V Kouloulias, G Zacharias
1Saint Savvas Anticancer Institute of Athens, 2nd Department of Radiation Therapy, Athens, Greece. gkoyokoyrakis@yahoo.gr
Purpose:
capecitabine is an oral fluoropyrimidine which had been developed as a pro-drug of fluorouracil (FU), and had shown improved tolerability and intratumor drug concentrations through its tumor-specific conversion to the active drug. Our purpose was to make a comprehensive literature review regarding capecitabine's efficacy in metastatic colorectal cancer.
Methods:
we searched the Pubmed and Cochrane databases regarding all available information on capecitabine, focusing on its clinical effectiveness against metastatic colorectal cancer. Special attention was paid on trials that compared capecitabine with standard folinic acid (leucovorin/ LV)-modulated intravenous 5-fluorouracil (5-FU) bolus regimens in patients with metastatic colorectal cancer. Moreover, the efficacy of capecitabine alone or in several combinations with other active drugs such as irinotecan and oxaliplatin on metastatic colorectal cancer were also assessed.
Results:
comparative trials showed that capecitabine is at least equivalent to standard 5-FU/LV combination regarding progression-free and overall survival, expressing at the same time a better tolerability profile with a much lower incidence of stomatitis.
Conclusion:
nowadays it is known that capecitabine can be combined with other active drugs such as irinotecan and oxaliplatin and the combination of oxaliplatin with capecitabine represents a new standard of care for metastatic colorectal cancer.
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