Annals of Oncology Advance Access published online on January 10, 2006
Annals of Oncology, doi:10.1093/annonc/mdj121
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1 School of Medicine and Medical Science, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin 4, Ireland
* To whom correspondence should be addressed. Background: Survivin, a novel inhibitor of apoptosis, is one of the most cancer-specific proteins identified to date. In this study we (a) evaluated the association between survivin and HER2, vascular endothelial growth factor (VEGF) and uPA/PAI-1 expression and (b) defined its effect on clinical outcome in a large breast cancer patient cohort. Patients and methods: Survivin expression was measured by ELISA in primary breast cancer tissue extracts from 420 patients with long-term clinical follow-up. Results: Survivin was detected in 378 (90%) of the 420 primary breast cancer cases. Increased survivin levels were significantly associated with high nuclear grade (P < 0.0001), negative hormone receptor status (P = 0.0028), HER2 overexpression (P = 0.0094), VEGF expression (P < 0.0001), high uPA (P = 0.0002) and PAI-1 levels (P = 0.0002). Using the 25th percentile (1.4 ng/mg) as a cut-off point, patients expressing elevated survivin had a significantly worse disease-free survival (DFS: P = 0.0007, RR 1.97) and overall survival (OS: P = 0.0009, RR 2.11) compared with patients expressing lower levels of survivin. In multivariate analysis, this prognostic value of survivin was independent of both traditional and novel clinicopathologic factors for both DFS (P = 0.0076, RR 1.72) and OS (P = 0.0155, RR 1.76). Conclusions: The independent prognostic relevance of survivin, when combined with previous data from model systems implicating survivin in the inhibition of apoptosis, suggests that survivin may be a suitable target for future therapeutic strategies. BMR and GEK contributed equally to this work.
Received September 12, 2005
Revised November 28, 2005
Accepted November 30, 2005
original article
Survivin expression in breast cancer predicts clinical outcome and is associated with HER2, VEGF, urokinase plasminogen activator and PAI-1
B. M. Ryan 1 *,
G. E. Konecny 2,
S. Kahlert 3,
H.-J. Wang 4,
M. Untch 3,
G. Meng 5,
M. D. Pegram 6,
K. C. Podratz 7,
J. Crown 8,
D. J. Slamon 6,
and
M. J. Duffy 9
2 Division of Hematology-Oncology, Department of Medicine, University of California Los Angeles, Los Angeles, California, USA; Department of Gynecologic Surgery, Mayo Clinic Foundation, Rochester, Minnesota
3 Departments of Obstetrics and Gynecology, Klinikum Grosshadern, Ludwig Maximilians Universität München, München, Germany
4 Department of Biomathematics and Biostatistics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
5 Genentech, South San Francisco, California
6 Division of Hematology-Oncology, Department of Medicine, University of California Los Angeles, Los Angeles, California, USA
7 Department of Gynecologic Surgery, Mayo Clinic Foundation, Rochester, Minnesota
8 Department of Medical Oncology, St Vincent's University Hospital, Dublin, Ireland
9 School of Medicine and Medical Science, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin 4, Ireland; Department of Nuclear Medicine and Medical Oncology, St Vincent's University Hospital, Dublin, Ireland
B. M. Ryan, E-mail: Brid.Ryan{at}ucd.ie
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