We analyzed gene expression data from the MATADOR study (van Rossum et al., 2018
), a randomized phase III clinical trial in which 664 patients were treated with either adjuvant dose-dense doxorubicin + cyclophosphamide (ddAC) or AC combined with docetaxel (TAC)...high FER levels correlated with an increased probability of recurrence-free survival (RFS) following taxane-containing treatment, compared with ddAC-only treatment (adjHR = 0.48; 95% CI: 0.24–0.96; p = 0.039) (Figure 2E).