Engineering Gut Microbiome to Target Breast Cancer

Inclusion Criteria: * Post-menopausal females ≥ 18 years of age * Histologically confirmed adenocarcinoma of the breast ≥1.0 cm operable stage I-III * Must have adequate organ function, * Not receive systemic neoadjuvant therapy * Be willing to provide tissue, blood, and stool samples for research study. * Must not have taken any probiotics in the past 60 days prior to enrollment. Exclusion Criteria: * Patients with autoimmune disease, immune deficiency such as HIV, irritable bowel, known diverticulosis, and other serious GI conditions at treating physician's discretion will be excluded.