HER-2 status in patients with breast carcinoma is not modified selectively by preoperative chemotherapy and is stable during the metastatic process. - Vincent-Salomon,A.; Jouve,M.; Genin,P.; Freneaux,P.; Sigal-Zafrani,B.; Caly,M.; Beuzeboc,P.; Pouillart,P.; Saestre-Garaux,X. (Cancer, 2002)