Furthermore, miR‐141 expression level in BC tissues correlated negatively with tumor stage, lymph node metastasis, and expression levels of HER2, PCNA, and Ki67 (Table 1), while there was no significant correlation between miR‐141 expression and patient age, tumor size, tumor grade, ER, or PR expression levels (data not shown). This evidence concerns the gene MKI67 and neoplasm.