FOXO1 and breast cancer: Previously, miR‐135a‐5p (miR‐135a) expression has been shown to be upregulated in BC cells and tissues, and it performs as an onco‐miR by targeting PHLPP2 and FOXO1.16 Interestingly, in the present study, we found that MBNL1‐AS1 was directly bound with miR‐135a through bioinformatics.