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Adjuvant and palliative anticancer treatment of colon carcinoma in 2004
Journal
PRAXIS
Volume
93
Number
40
Pages / Article-Number
1633-44
Abstract
This article reviews the available data regarding the acticity of postoperative adjuvant systemic therapy for colorectal cancer as first and second-line treatment in metastatic disease. The efficacy of adjuvant treatment of patients with stage III colorectal cancer is well established. 5-fluorouracil (5-FU) and folic acid over 6 months (still) represent todays standard and should serve as comparison in randomized studies. The risk of relapse is low in stage II colon carcinoma and consequently the efficacy is relatively small compared to stage III. New investigation indicate, Capecitabene has the potential to replace 5-FU/FS as standard treatment for patients with colon cancer. Efficacy results are expected to be available in 2004. In metastatic disease combination of 5-FU/folic acid plus CPT-11 or OXA are treatment of choice for the first-line therapy of metastatic colorectal carcinoma. FOLFOX is high-dose intensity oxaliplatin added to the simplified bimonthly leucovorin and 5-fluorouracil regimen as second- line therapy for metastatic colorectal cancer. It resulted in prolongation of the median progress free survival from 6,8 to 8,8 months and increased the survival for 4,5 months. New perspectives are novel chemotherapeutic and targeted agents in metastatic colorectal cancer: For the first time, there has been a targeted therapy shown convincingly to prolong survival for patients with unresectable metastatic colorectal cancer in a well-performed Phase III trial. This agent is bevacizumab, a humanised monoclonal antibody targeting the circulating proangiogenic growth factor vascular endothelial growth factor. Results with bevacizumab should lead to rapid expansion of the number of strategies targeting tumour neovasculature. Additionally, an antibody against the epidermal growth factor, cetuximab, has been shown to have both single-agent activity and the potential ability to partially reverse resistance to a chemotherapy drug. These advancements, as well as data on other novel treatment agents that have been studied specifically in patients with colorectal neoplasms, are discussed in detail.
