The purpose of this study is to determine if BMS-690514 + letrozole will be more effective than lapatinib + letrozole in patients who have metastatic hormone receptor positive breast cancer after developing progressive disease immediately following adjuvant antiendocrine therapy
Tablets, Oral, 200 mg, once daily, \~ 12 months depending on response
Tablets, Oral, 1500 mg, once daily, \~ 12 months depending on response
Tablets, Oral, 2.5 mg, once daily, \~ 12 months depending on response
La Rioja, La Rioja Province, Argentina
Rosario, Santa Fe Province, Argentina