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Ki-67 as prognostic marker in early breast cancer: a meta-analysis of published studies involving 12 155 patients

Open access
de Azambuja, E, Cardoso, F, de Castro, G, Colozza, M, Mano, M S, Durbecq, V, Sotiriou, C, Larsimont, D, Piccart-Gebhart, M J, Paesmans, M·2007·British Journal of Cancer

Abstract

The Ki-67 antigen is used to evaluate the proliferative activity of breast cancer (BC); however, Ki-67's role as a prognostic marker in BC is still undefined. In order to better define the prognostic value of Ki-67/MIB-1, we performed a meta-analysis of studies that evaluated the impact of Ki-67/MIB-1 on disease-free survival (DFS) and/or on overall survival (OS) in early BC. Sixty-eight studies were identified and 46 studies including 12 155 patients were evaluable for our meta-analysis; 38 studies were evaluable for the aggregation of results for DFS, and 35 studies for OS. Patients were considered to present positive tumours for the expression of Ki-67/MIB-1 according to the cut-off points defined by the authors. Ki-67/MIB-1 positivity is associated with higher probability of relapse in all patients (HR=1.93 (95% confidence interval (CI): 1.74-2.14); P<0.001), in node-negative patients (HR=2.31 (95% CI: 1.83-2.92); P<0.001) and in node-positive patients (HR=1.59 (95% CI: 1.35-1.87); P<0.001). Furthermore, Ki-67/MIB-1 positivity is associated with worse survival in all patients (HR=1.95 (95% CI: 1.70-2.24; P<0.001)), node-negative patients (HR=2.54 (95% CI: 1.65-3.91); P<0.001) and node-positive patients (HR=2.33 (95% CI: 1.83-2.95); P<0.001). Our meta-analysis suggests that Ki-67/MIB-1 positivity confers a higher risk of relapse and a worse survival in patients with early BC.

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Metadata

Authors
de Azambuja, E., Cardoso, F., de Castro, G., Colozza, M., Mano, M. S., Durbecq, V, Sotiriou, C., Larsimont, D., Piccart-Gebhart, M. J., & Paesmans, M.
Venue
British Journal of Cancer
Published
2007-04-24
Volume
96
Issue
10
Pages
1504-1513
ISSN
  • 0007-0920 (ISSN-L)
  • 1532-1827
OpenAlex
W2001968322
Cited by
959
References
5
FWCI
1.50
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Ki-67 as prognostic marker in early breast cancer: a meta-analysis of published studies involving 12 155 patients. https://app.cochat.ai/papers/10.1038/sj.bjc.6603756
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de Azambuja, E., Cardoso, F., de Castro, G., Colozza, M., Mano, M. S., Durbecq, V, Sotiriou, C., Larsimont, D., Piccart-Gebhart, M. J., & Paesmans, M. (2007). Ki-67 as prognostic marker in early breast cancer: a meta-analysis of published studies involving 12 155 patients. British Journal of Cancer. https://doi.org/10.1038/sj.bjc.6603756

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