A Neoadjuvant Study of Abemaciclib (LY2835219) in Postmenopausal Women With Hormone Receptor Positive, HER2 Negative Breast Cancer (neoMONARCH)
Breast Cancer, Hormone Receptor Positive Tumor, Early-Stage Breast Carcinoma

About this trial
This is an interventional treatment trial for Breast Cancer focused on measuring cyclin-dependent kinase (CDK) 4/6 inhibitor, CDK 4 and 6 inhibitor
Eligibility Criteria
Inclusion Criteria:
- Have postmenopausal status.
- Adenocarcinoma of the breast.
- Breast tumor ≥1 centimeter (cm) in diameter, HR+, HER2-.
- Neoadjuvant endocrine monotherapy is deemed to be a suitable therapy.
- Primary breast cancer that is suitable for baseline core biopsy.
- Have adequate organ function.
Exclusion Criteria:
- Bilateral invasive breast cancer.
- Metastatic breast cancer (local spread to axillary lymph nodes is permitted).
- Inflammatory breast cancer.
- Prior systemic therapy or radiotherapy for invasive or non-invasive breast cancer in the same breast as currently being treated.
- Prior radiotherapy to the ipsilateral chest wall for any malignancy.
- Prior anti-estrogen therapy.
Sites / Locations
- Comprehensive Blood and Cancer Center
- University of California-San Diego
- SMO TRIO -Translational Research
- UCLA Medical Center
- Cancer Care Associates Medical Group
- Sansum Medical Research Foundation
- Central Coast Medical Oncology Corporation
- Stanford University
- SMO Pharmatech Oncology Inc
- St Mary's Hospital Regional Cancer Center
- Holy Cross Hospital Inc.
- Memorial Regional Hospital/Joe Dimaggio Childrens Hospital
- Oncology and Radiation Associates
- Orlando Health, Inc
- Florida Cancer Research Institute
- Northeast Georgia Cancer Care, LLC
- Georgia Regents University
- Kaiser Foundation Hospitals
- Walter Reed National Military Medical Center
- University of Massachusetts Medical Center
- Nebraska Hematology-Oncology
- Weill Cornell Medical College
- St. Charles Health System
- The West Clinic
- Millennium Oncology
- Utah Cancer Specialists
- Columbia Basin Hematology & Oncology
- For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri, 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST) or speak with your personal physician.
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- For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri, 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST) or speak with your personal physician.
- For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri, 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST) or speak with your personal physician.
- For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri, 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST) or speak with your personal physician.
- For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri, 9 AM to 5 PM Eastern Time (UTC/GMT - 5 hours, EST) or speak with your personal physician.
Arms of the Study
Arm 1
Arm 2
Arm 3
Experimental
Experimental
Active Comparator
Abemaciclib + Anastrozole
Abemaciclib
Anastrozole
Abemaciclib (150 milligrams [mg]) was given orally every 12 hours (Q12H) plus anastrozole (1 mg) orally once daily (QD) for 2 weeks. Loperamide was given as a prophylaxis for 4 weeks and then at physician discretion. All participants received abemaciclib (150 mg) orally Q12H plus anastrozole (1 mg) QD for an additional 14 weeks. Total treatment duration was 16 weeks.
Abemaciclib (150 mg) was given orally Q12H for 2 weeks. Loperamide was given as a prophylaxis for 4 weeks and then at physician discretion. All participants received abemaciclib (150 mg) orally Q12H plus anastrozole (1 mg) QD for an additional 14 weeks. Total treatment duration was 16 weeks.
Anastrozole (1 mg) is given orally QD for 2 weeks. All participants received abemaciclib (150 mg) orally Q12H plus anastrozole (1 mg) QD for an additional 14 weeks. Loperamide was given as a prophylaxis for the first 2 weeks of the combination treatment and then at physician discretion. Total treatment duration was 16 weeks.