Candidate for treatment with trastuzumab. Prior treatment with trastuzumab and or/ lapatinib in the neoadjuvant, adjuvant or metastatic disease setting is permitted. Treatment with hormone therapy in the adjuvant and/or advanced disease setting is permitted. [clinicaltrials_resource:f1812e7dd1d0c7ae8443365028e63b13]

Candidate for treatment with trastuzumab. Prior treatment with trastuzumab and or/ lapatinib in the neoadjuvant, adjuvant or metastatic disease setting is permitted. Treatment with hormone therapy in the adjuvant and/or advanced disease setting is permitted. [clinicaltrials_resource:f1812e7dd1d0c7ae8443365028e63b13]