MECOM and breast cancer: Further analysis of the EVI1 prognostic relevance on the 828 patients not achieving pCR showed no significant correlation of high EVI1 expression with DFS (HR = 0.94 [95%CI 0.73–1.22], log-rank p = 0.660) or OS (HR = 0.91 [95%CI 0.67–1.26], log-rank p = 0.585) in the entire cohort and among BC subtypes (Supplementary Fig. 3, Supplementary Table 5).