Racial/ethnic differences in 21-gene recurrence score and survival among patients with estrogen receptor-positive breast cancer

Despite numerous studies on racial/ethnic disparities among patients with breast cancer, there is a paucity of literature evaluating racial/ethnic differences in 21-gene recurrence score (RS) and survival diferences stratifed by RS risk categories. We thus performed an observational cohort study to examine racial/ethnic disparities in the context of RS.