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Prognostic value of proliferation in invasive breast cancer: a review

By P.J. van Diest, E. van der Wall and J.P.A. Baak


Breast cancer is the leading cause of death among solid\ud tumours in women, and its incidence is increasing in the\ud West. Adjuvant chemotherapy and hormonal treatment\ud improve survival but have potentially serious side effects,\ud and are costly. Because adjuvant treatment should be given\ud to high risk patients only, and traditional prognostic factors\ud (lymph node status, tumour size) are insufficiently accurate,\ud better predictors of high risk and treatment response are\ud needed. Invasive breast cancer metastasises\ud haematogenously very early on, so many breast cancer\ud prognosticators are directly or indirectly related to\ud proliferation. Although studies evaluating the role of\ud individual proliferation regulating genes have greatly\ud increased our knowledge of this complex process, the\ud functional end result—cells dividing—has remained the\ud most important prognostic factor. This article reviews the\ud prognostic value of different proliferation assays in invasive\ud breast cancer, and concludes that increased proliferation\ud correlates strongly with poor prognosis, irrespective of the\ud methodology used. Mitosis counting provides the most\ud reproducible and independent prognostic value, and\ud Ki67/MIB1 labelling and cyclin A index are promising\ud alternatives that need methodological fine tuning

Topics: Geneeskunde
Year: 2004
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