heart angina myocardial infarction unstable congestive failure cardiac months uncontrolled rituximab containing prior therapy treatment regimen refractory months received chemotherapy platinum based chemotherapy regimen disease progression therapy line prior resistant hormone releasing lhrh luteinizing therapy agonist thyroid androgen orchiectomy gnrh adjuvant chemotherapy neoadjuvant therapy prior setting months metastatic neo treatment myocardial infarction months angina unstable history prior coronary study stroke metastatic disease evidence patients distant prior chemotherapy therapy recurrent cancer