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OBJECTIVE: The objective of this phase III trial was to compare chemotherapy combined with bevacizumab versus chemotherapy alone in the treatment of patients with advanced colorectal cancer. METHODS: From September 2004 till September 2008, 222 treatment-naive patients were enrolled and divided into 2 arms: 114 arm A patients were treated with leucovorin, 5-fluorouracil plus irinotecan in combination with bevacizumab, and 108 arm B patients were treated as above without bevacizumab. All patients were stage IV with histologically confirmed adenocarcinoma. RESULTS: The median overall survival of arm A patients was 22.0 months (95% CI: 18.1-25.9) and 25.0 months (CI: 18.1-31.9) for arm B patients. There was no statistically significant difference between the 2 arms (p = 0.1391). No statistically significant difference between the 2 arms regarding the response rate was observed: partial response, 42 patients (36.8%) and 38 patients (35.2%) for arms A and B, respectively. Hematologic toxicity did not differ in the comparison of the 2 arms. Nonhematologic toxicity in arm A involved hypertension in 23 (20.2%) of the patients and proteinuria in 7 (6.1%); 3 patients experienced hemorrhage and 1 patient intestinal perforation. None of these side effects was observed in arm B patients. CONCLUSION: No statistically significant difference in median overall survival in patients with advanced colorectal cancer treated with bevacizumab plus a combination therapy (arm A) and those treated with the combination only, without bevacizumab (arm B), was observed.
Stathopoulos et al. (Fri,) studied this question.
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