Abstract
Expression of proliferating cell nuclear antigen (PCNA) and c-erbB-2 oncoprotein has been assessed in 471 women with breast cancer to evaluate their prognostic value as compared to conventional histopathological factors. In univariate analysis, high PCNA expression (≥20%) predicted a significantly worse survival in lymph-node-negative tumors (univariateP=0.031). However, the effect disappeared in multivariate analysis and the histological grade remained the only independent factor for this group. Despite its close correlation to histological grade (P<0.001), PCNA expression discriminated subsets with different survival within the heterogeneous group of moderately differentiated tumors (univariateP=0.073, multivariateP=0.075). PCNA expression was not found to be a significant prognostic factor in lymph-node-positive tumors, thus it was of limited value for breast cancer patients as a whole. c-erbB-2 protein overexpression was associated with a worse survival (univariateP=0.019, multivariateP=0.057) for the entire group of patients. The effect was mainly attributed to the significance of c-erbB-2 as an independent factor in lymph-node-positive (up to three nodes, multivariateP=0.04; four or more nodes: multivariateP=0.017) and large tumors (>2 cm: multivariateP=0.002). c-erbB-2 was without significance in lymph-node-negative patients. Though both factors might amplify the prognostic information for distinct patient subsets they do not achieve the strong prognostic value of conventional histopathological features in breast cancer.
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Schönborn, I., Zschiesche, W., Minguillon, C. et al. Prognostic value of proliferating cell nuclear antigen and c-erbB-2 compared with conventional histopathological factors in breast cancer. J Cancer Res Clin Oncol 121, 115–122 (1995). https://doi.org/10.1007/BF01202223
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DOI: https://doi.org/10.1007/BF01202223