MiR-7974 was identified as a potential prognostic marker in ER+ BC, as the higher expression quartiles of miR-7974 (Q2, Q3 and Q4) were associated with poorer RFS compared to the lowest expression quartile (Q1) in ER+ BC cases (n=120; Table 2, Fig 1C) with Padj=0.001. Here, ESR1 is linked to breast cancer.