The purpose of this study is to determine whether the combination of enzastaurin and capecitabine is more effective than the combination of placebo and capecitabine in treating participants with breast cancer who were previously treated with an anthracycline and a taxane.
1125 milligrams (mg) loading dose then 500 mg, oral, daily, 21-day cycles until progressive disease
oral, daily, 21-day cycles until progressive disease
1250 mg/m\^2, BID, days 1-14 of each 21-day cycle until progressive disease
Buenos Aires, Argentina
Resistencia, Argentina
Tucumain, Argentina