Volume 119, Issue 11 pp. 2539-2545
Cancer Cell Biology

Impact of cyclins E, neutrophil elastase and proteinase 3 expression levels on clinical outcome in primary breast cancer patients

Christine Desmedt

Christine Desmedt

Translational Research Unit, Department of Medical Oncology, Jules Bordet Institute, Université Libre de Bruxelles, Brussels, Belgium

Christine Desmedt and Frank El Ouriaghli are co-first authors.

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Frank El Ouriaghli

Frank El Ouriaghli

Laboratory of Experimental Hematology, Jules Bordet Institute, Université Libre de Bruxelles, Brussels, Belgium

Christine Desmedt and Frank El Ouriaghli are co-first authors.

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Virginie Durbecq

Virginie Durbecq

Translational Research Unit, Department of Medical Oncology, Jules Bordet Institute, Université Libre de Bruxelles, Brussels, Belgium

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Anne Soree

Anne Soree

Laboratory of Experimental Hematology, Jules Bordet Institute, Université Libre de Bruxelles, Brussels, Belgium

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Maria Antonetta Colozza

Maria Antonetta Colozza

Translational Research Unit, Department of Medical Oncology, Jules Bordet Institute, Université Libre de Bruxelles, Brussels, Belgium

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Evandro Azambuja

Evandro Azambuja

Translational Research Unit, Department of Medical Oncology, Jules Bordet Institute, Université Libre de Bruxelles, Brussels, Belgium

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Marianne Paesmans

Marianne Paesmans

Data Centre, Jules Bordet Institute, Université Libre de Bruxelles, Brussels, Belgium

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Denis Larsimont

Denis Larsimont

Translational Research Unit, Department of Medical Oncology, Jules Bordet Institute, Université Libre de Bruxelles, Brussels, Belgium

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Marc Buyse

Marc Buyse

International Drug Development Institute (IDDI), Brussels, Belgium

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Adrian Harris

Adrian Harris

Molecular Oncology Laboratory, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Oxford, United Kingdom

Molecular Angiogenesis Laboratory, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Oxford, United Kingdom

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Martine Piccart

Martine Piccart

Translational Research Unit, Department of Medical Oncology, Jules Bordet Institute, Université Libre de Bruxelles, Brussels, Belgium

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Philippe Martiat

Philippe Martiat

Laboratory of Experimental Hematology, Jules Bordet Institute, Université Libre de Bruxelles, Brussels, Belgium

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Christos Sotiriou

Corresponding Author

Christos Sotiriou

Translational Research Unit, Department of Medical Oncology, Jules Bordet Institute, Université Libre de Bruxelles, Brussels, Belgium

Fax: +32-2-538-0858.

121 Boulevard de Waterloo, 1000 Brussels, BelgiumSearch for more papers by this author
First published: 20 October 2006
Citations: 33

The authors declare that they have no competing interests.

Abstract

Uncontrolled cell proliferation is one of the hallmarks of cancer and the transition from the G1 to S phase is the most commonly reported cell cycle abnormality in tumors. It has been shown that the oncogenic activity of G1 cyclin E (CCNE) can be amplified by generating hyperactive low molecular weight forms (LMW) through elastase-mediated proteolytic processing. Neutrophil elastase (NE) and proteinase 3 (PR3) are 2 proteases that are aberrantly expressed in breast cancer cells and seem to be involved in cell proliferation. In this study, we evaluated the effect of the expression of these 2 proteases in addition to 2 potential intracellular targets of NE (CCNE1 and CCNE2) on clinical outcome in a population of 205 primary breast cancer patients. By univariate analysis, CCNE1, CCNE2, estrogen receptor and grade significantly predicted relapse free interval (RFI). NE and PR3 did not achieve statistical significance. In a multivariate analysis, elevated CCNE2 [hazard ratio (HR) 2.10, p = 0.008] predicted shorter RFI. In subgroup analyses of the tamoxifen-only treated patients, high CCNE1 levels predicted treatment resistance, while high levels of CCNE2 were associated with poor RFI in untreated patients. Investigation of the relationship between CCNE1, CCNE2 and NE did not show any impact on RFI. To conclude, this study was the first to evaluate these markers at the mRNA level by RT-PCR in a series of primary breast cancer patients, and our results confirmed the impact of high CCNE levels on clinical outcome in systemically untreated and of CCNE1 in tamoxifen-only treated early breast cancer patients. © 2006 Wiley-Liss, Inc.

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