Prognostic value of proliferating cell nuclear antigen and c-erbB-2 compared with conventional histopathological factors in breast cancer

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 (P2 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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