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

Propranolol starting dose is 20mg b.i.d.; propranolol dose is up-titrated to 40mg b.i.d. to 80 mg daily with chemotherapy depending on tolerability. Tolerability is assessed every 2 weeks.

(Non-experimental) During the baseline visit, you will undergo DOT evaluation of your tumor for determination of blood, fat, and water content in the affected and unaffected breast. DOT readings will be obtained at 4 additional time points: after paclitaxel week #3, before AC week #1, before AC week #3, and prior to surgery.

(Non-experimental) given as a one-hour intravenous infusion (IV) every week for a total of 12 weeks; the first dose of paclitaxel may be given over 90 minutes, per the discretion of your treating doctor. The dose will be given in 80 mg/m2 based on individual body surface area (BSA). This drug is given through a vein in the arm or a catheter (eg. Infusaport, Portacath).

(Non-experimental) In the event paclitaxel is not available due to manufacturing and supply shortages, nab-paclitaxel will be substituted for paclitaxel. The dose is 100 mg/m2 IV infusion over 30 minutes weekly (or institutional standard). No premedications are given with nab-paclitaxel.

(Non-experimental) (only if HER2-positive): Trastuzumab is given as an IV infusion initially over 90 minutes for the first dose, then 30-60 minutes every 3 weeks in subsequent doses if well tolerated. To be given every 3 weeks with paclitaxel/propranolol.

(Non-experimental) (only if HER2-positive): Pertuzumab is given as an IV infusion over 60 minutes on the first dose, then 30-60 minutes every 3 weeks if well tolerated. To be given every 3 weeks with paclitaxel/propranolol.

(Non-experimental) Doxorubicin will be given as a 510 minute intravenous infusion (IV) in a dose of 60 mg/m2; cyclophosphamide will be given as a 3060 minutes intravenous infusion (IV) in a dose of 600 mg/m2 based on BSA. This chemotherapy regimen will be given every 2 weeks for total of 8 weeks or 2 months.

(Non-experimental) Doxorubicin 60 mg/m2 IV over 5-10 minutes, Cyclophosphamide 600 mg/m2 IV infusion over 30-60 minutes. The first cycle should be initiated with 3 weeks after the last paclitaxel and/or trastuzumab/pertuzumab dose.

After you complete all chemotherapy plus propranolol treatment, you will then have surgery to remove the breast tumor if your doctor feels that it is medically appropriate (if you have had a good response to the treatment) - lumpectomy/mastectomy.

As premedication to prevent some of the side effects associated with paclitaxel, you will also receive dexamethasone (Decadron) in a dose of 10 mg, diphenhydramine (Benadryl) in doses of 2550 mg, and an H2 blocker (eg. ranitidine 50 mg or equivalent) 3060 minutes before each paclitaxel infusion. If no hypersensitivity reactions are experienced, dexamethasone may be reduced in increments of 2 mg per week per dose (until a minimum of 2 mg has been reached).

In addition to doxorubicin, you will receive an anti-nausea therapy and dexamethasone about 3060 minutes before AC chemotherapy.

When you receive the AC chemotherapy, you will also receive treatment with a drug called pegfilgrastim (Neulasta). Neulasta is a commercially available drug. It stimulates the production of white blood cells and reduces the likelihood of developing a low white blood cell count and fever after chemotherapy. It will be given as an injection under the skin on the day after each chemotherapy treatment (day 2).