08 May Early Breast Cancer: 21-Gene Recurrence Scores Can Help Guide Chemotherapy Prognosis
MedicalResearch.com Interview with:
Anurag K. Singh MD
Professor of Oncology
Director of Radiation Research
Leader, Cell Stress and Biophysical Therapy Program
Associate Dean Graduate Medical Education, Research
Roswell Park Comprehensive Cancer Center
MedicalResearch.com: What is the background for this study?
Response: More than 40% of women with hormone receptor-positive, HER2-negative early stage breast cancer with high recurrence scores (RS) have RS of 26-30. Optimal adjuvant systemic therapy in this subgroup remains unclear, and national guideline currently recommends either chemoendocrine therapy or endocrine therapy alone. In addition, the difference in overall survival of a patient with a RS 26-30 versus RS >30 is unclear.
MedicalResearch.com: What are the main findings?
Response: Our main findings are:
(1) Chemotherapy improves outcomes for those with RS 26-30,
(2) RS >30 carries a worse prognosis for survival compared to RS 26-30 despite receiving chemoendocrine therapy, and
(3) The magnitude of chemotherapy benefit appears to be similar between those with RS 26-30 and RS >30.
MedicalResearch.com: What should readers take away from your report?
Response: Breast cancer patients with a 21-gene recurrence score of 26 or higher are a heterogeneous group of patients with different prognosis and outcomes, and chemotherapy may benefit patients with recurrence scores of 26-30.
MedicalResearch.com: What recommendations do you have for future research as a result of this study?
Response: Further prospective studies are needed to investigate optimal adjuvant therapy regimens for patients with a high 21-gene recurrence score.
Ma SJ, Oladeru OT, Singh AK. Association of Adjuvant Chemotherapy With Overall Survival in Patients With Early-Stage Breast Cancer and 21-Gene Recurrence Scores of 26 or Higher. JAMA Netw Open. 2020;3(5):e203876. doi:10.1001/jamanetworkopen.2020.3876
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