Relationship Between Gut Microbiome and Adjuvant Chemotherapy in Patients With Early Breast Cancer

Breast cancer is the most common cause of cancer death in women. Adjuvant chemotherapy significantly reduces the risk of recurrence of high-risk breast cancer. However, about 30% of patients still have distant metastasis or local recurrence after chemotherapy. Moreover, 60% of patients had 3-4 degrees of adverse drug reactions during chemotherapy. The purpose of the study is to investigate relationship between gut microbiome and adjuvant chemotherapy in early breast cancer patients.