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Univariate and multivariate Cox‐Hazards for PFS. Using COX multivariate analysis with standard staging parameters like nodal stage and tumour size before and after therapy as well as menopausal status and grading, the CTC ‘all ERBB family status’ turned out as a significant, independent unfavourable predictor for PFS (P = 0.042). c (clinical)/p (pathological) T (tumour), c/pN (node), BT (before therapy), AT (after therapy)
