21-Gene recurrence score assay in pN2-3 Early-Stage breast cancer: a national cancer database study.
BACKGROUND The clinical utility of the 21-gene recurrence score (RS) for guiding adjuvant chemotherapy in patients with pN2-3 early-stage breast cancer (eBC) has not been evaluated in prospective trials. This study aims to assess adjuvant chemotherapy benefit in patients with pN2-3 eBC who underwent RS testing and had...