, Volume 25, Issue 1, pp 43–50

Optimizing the Efficacy of First-Line Chemotherapy plus Bevacizumab in Metastatic Colorectal Cancer

Original Research Article



To assess the efficacy and safety of first-line standard chemotherapy plus bevacizumab in metastatic colorectal cancer and to explore how to optimize therapeutic efficacy.


First, meta-analysis and pooled analysis of three randomized, controlled trials were used to compare response rate (RR), progression-free survival (PFS), overall survival (OS), and grade 3 or 4 adverse events (G3/4AEs) of chemotherapy plus bevacizumab (n=1169) with those of chemotherapy alone (n=1148).Second, using six different regimens plus bevacizumab, the Spearman method was used to analyze the correlationbetween these regimens and OS. Finally, one-way ANOVA was used to compare OS in these regimens.


Overall, chemotherapy plus bevacizumab increased RR by 3.8%, prolonged PFS by 3.0 months and OS by 3.3 months, and increased G3/4AEs by 7.6%. Significant differences were found in PFS (hazard ratio [HR] = 0.65; p = 0.000), OS (HR = 0.79; p = 0.000), and G3/4AEs (risk ratio= 1.12; p = 0.006). However, no statistical difference was found in RR (odds ratio = 1.32; p = 0.17). The optimal regimens with regard to mean OS were capecitabine and irinotecan (CAPIRI) plus bevacizumab (24.00 months) and fluorouracil, leucovorin, and oxaliplatin (FOLFOX) plus bevacizumab (23.97 months).


First-line standard chemotherapy plus bevacizumab conferred a significant improvement in OS. In combination with bevacizumab, both CAPIRI and FOLFOX are favorable regimens, though further studies are needed to confirm these results.


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© Adis Data Information BV 2011

Authors and Affiliations

  1. 1.Postgraduate SchoolFujian Medical UniversityFuzhou, FujianPeople's Republic of China
  2. 2.Department of Colorectal and Anal SurgeryAffiliated Union Hospital of Fujian Medical UniversityFuzhou, FujianPeople's Republic of China

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