Impact of Taxanes, Endocrine Therapy, and Deleterious Germline BRCA Mutations on Anti-m üllerian Hormone Levels in Early Breast Cancer Patients Treated With Anthracycline- and Cyclophosphamide-Based Chemotherapy

Background Limited evidence exists on the impact of adding a taxane, using endocrine therapy and carrying a deleterious germline BRCA mutation on ovarian reserve measured by anti-müllerian hormone (AMH) levels of young breast cancer patients receiving (neo)adjuvant cyclophosphamide- and anthracycline-based chemotherapy. Methods This is a biomarker analysis including young (≤40 years) early breast cancer patients with known germline BRCA mutational status and available prospectively collected frozen plasma samples before and after chemotherapy. Chemotherapy consisted of either six cycles of FEC (5 fluorouracil 500 mg/m2, epirubicin 100 mg/m2, cyclophosphamide 500 mg/m2) or three cycles of FEC followed by three cycles of docetaxel (D, 100 mg/m2). Endocrine therapy consisted of tamoxifen (±GnRH agonists). AMH levels at baseline, one and three years after diagnosis were compared according to type of chemotherapy (FEC only vs. FEC-D), use of endocrine therapy (yes vs. no) and deleterious germline BRCA mutations (mutated vs. negative). Results Out of 148 included patients, 127 (86%) received D following FEC chemotherapy, 90 (61%) underwent endocrine therapy and 35 (24%) had deleterious germline BRCA mutations. In the whole cohort, AMH levels drastically dropped one year after diagnosis (p
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research