Breast Cancer

Most breast cancer patients don't have pre-existing lung problems. So again, how does the trial handle prior COPD and other cardiopulmonary problems? And clinically, what do you do when you want to use you have a hurt to mutant situation, but yet the patient's got maybe even symptomatic COPD?" "In my experience, it's not an absolute contraindication," he says of TDXD for certain cancers.