ESR1 and breast cancer: KM survival analysis was performed on 597 ER+ BC patients based on the expression levels of 3 miRNAs, respectively (Fig. 5D–F), high expression levels of hsa-miR-370-3p and hsa-miR-432-5p were related to better prognosis while the high expression level of hsa-miR-149-5p was related with worse prognosis.