Breast Cancer NRG-BR009

Younger age at diagnosis is an adverse prognostic factor in early breast cancer: women who are less than 35 years of age at diagnosis are more likely to die from their disease than their older counterparts following standard treatments. There remains a pressing need for advancements in therapeutic options for this patient population. One increasingly utilized option is ovarian suppression, which was first reported as treatment for advanced breast cancer in 1896 and has been examined in a multitude of clinical trials over the past century. As chemotherapeutic options became more commonplace for breast cancer therapy, however, the role of ovarian suppression became uncertain. In the pre-genomic era, several studies evaluated the role of ovarian suppression compared to chemotherapy, with conflicting results. These studies either looked at ovarian suppression alone or at tamoxifen compared to chemotherapy. A meta-analysis examining LHRH-agonists (luteinizing hormone-releasing hormone) in the Early Breast Cancer Overview group (LHRH-agonists in Early Breast Cancer Overview group 2007) showed that when LHRH-agonists were added to tamoxifen, chemotherapy, or both, there was a 12.7% reduction in the risk of recurrence and a 15.1% reduction in the risk of death. When compared to chemotherapy, LHRH-agonists appeared to be equally as effective, especially if patients were less than 40 years of age. These older studies, conducted in the pre-taxane/anthracycline era, typically used CMF (cyclophosphamide, methotrexate, and fluorouracil) chemotherapy, and were designed prior to the use of genomic assays.


  • ER and/or PR positive and HER2 negative per ASCO/CAP
  • pN0 RS 16-20 plus high clinical risk or RS 21-25
  • pN1 with RS 0-25
  • ECOG PS 0,1
  • Premenopausal patients with resected T1-3, N0-1, M0 breast cancer, over 18 years old

Locations: Hartford Hospital, Hartford HealthCare Medical Group - Manchester, Hartford HealthCare Cancer Institute - Avon, Hartford HealthCare Cancer Institute at The Hospital of Central Connecticut, MidState Medical Center, Saint Vincent's Medical Center

Contacts: Hartford Region - Rebecca.O' Central Region - Siobhan Reilly

Sponsor: NRG Oncology

Cancer Clinical Research Office