“…Unfortunately, the published series differ notably regarding the HER-2 antibodies used, the scoring schemes of the immunoreactions, the analyzed samples (pretherapeutic biopsies versus posttherapeutic samples versus metastases), and the clinicopathological data given, making it difficult to compare the different results and to draw unequivocal conclusions [4,24]. However, all kinds of interpretations have been published, including those who found HER-2 expression to be correlated with a poor prognosis [12,13,23,25], with a favorable outcome [17], or those who could not find any correlation at all [16,21,26]. In our series, we investigated only well-characterized and un-decalcified pretherapeutic biopsy samples and used the most widely used antibodies for the assessment of HER-2 expression.…”