Pre-Surgical Trial of the Combination of Metformin and Atorvastatin in Newly Diagnosed Operable Breast Cancer

"Metformin is an oral diabetes medicine that helps control blood sugar levels.~Dosage/Frequency: 1500 mg per day: divided 500 mg in the morning and 1000 mg in the evening~Metformin is for people with type 2 diabetes. Metformin is sometimes used in combination with insulin or other medications, but it is not for treating type 1 diabetes."

"Atorvastatin is in a group of drugs called statins. Atorvastatin reduces levels of bad cholesterol (low-density lipoprotein, or LDL) and triglycerides in the blood while increasing levels of good cholesterol (high-density lipoprotein, or HDL).~Dosage/Frequency: 80 mg once a day at bedtime~Atorvastatin is used to treat high cholesterol, and to lower the risk of stroke, heart attack, or other heart complications in people with type 2 diabetes, coronary heart disease, or other risk factors."

(Non-experimental) Female subjects with histologically-confirmed operable invasive breast cancer or DCIS will undergo core needle biopsy with a plan of surgical excision.