Researchers evaluated the clinical utility of genetic testing with MammaPrint 70-gene signature to determine how well this assay works in comparison with clinical assessment to determine the need for chemotherapy in women with breast cancer involving 0 to 3 lymph nodes. The phase 3 MINDACT findings, which included the survival outcomes of patients with an ultralow risk 70-gene signature, were presented during the 2021 American Society of Clinical Oncology Annual Meeting. The 70-gene signature can identify patients with an ultralow risk of distant recurrence, which can be used to de-escalate treatment and reduce side effects.
