Oncotype DX in BRCA-mutated Breast Cancer Patients: Our Experience. A Retrospective Observational Monocentric Study

Oncotype DX assay (Genomic Health, Inc, Redwood City, Calif) is a 21 gene panel developed to predict the risk of tumor recurrence in patients with ER-positive and human epidermal growth factor 2 (HER2)- negative breast cancer (BC); nowadays, this test represents a standard of care to guide adjuvant chemotherapy decision recommended in several guidelines. According to Oncotype DX Recurrent Score (RS)® a high RS shows a worse prognosis and predicts chemotherapy benefit in patients with ER-positive HER2-negative BC.