Fig. 2From: Serum HER2 extra-cellular domain, S100ß and CA 15-3 levels are independent prognostic factors in metastatic breast cancer patientsOverall survival (OS) according to the serum HER2 ECD level (with cut-off 15 ng/mL) in the HER-positive and HER2-negative populations. *NC: not calculableBack to article page