Study of Propranolol in Newly Diagnosed Breast Cancer Patients Undergoing Neoadjuvant Chemotherapy

This study is being conducted in patients with newly diagnosed breast cancer that will be undergoing chemotherapy prior to surgery - neoadjuvant chemotherapy. The study involves treatment with standard chemotherapy and a commonly used, FDA-approved, blood pressure drug called propranolol (Inderal). The purposes of this study are to: 1. Determine the effect of propranolol plus chemotherapy on breast cancer cells as well as the growth of blood vessels surrounding breast cancer cells. 2. Determine the side effect profile of propranolol and chemotherapy in patients with breast cancer receiving neoadjuvant chemotherapy. This research is being done because previous laboratory work has shown that propranolol may decrease the ability for the blood vessels around breast cancer cells to grow, which may be important in helping cancer cells grow. It also may reduce the likelihood for breast cancer cells to spread. If changes are seen in the breast cancer cells and surrounding blood vessels in this study, we will pan to evaluate whether propranolol decreases the likelihood of breast cancer from recurring in future, later studies. All chemotherapy regimens used in this study have been the standard of care for many years; however, the use of propranolol is being researched along with the chemotherapy regimens.