Abstract PS2-11: Ctc-her2+ a novel subset in stage IVaggressive: Molecular correlations, outcome and clinical characteristics in metastatic breast cancer

Background The enumeration of Circulating Tumor Cells (CTCs) in the peripheral blood of patients (pts) with metastatic breast cancer (MBC) showed prognostic value independent of clinic-pathological characteristics and proposed as a new tool for Stage IV stratification. Molecular characterization of CTCs with analysis of standard HER2 and estrogen-receptor (ER) status provides additional predictive value. The presence of HER2 positive CTCs...