The result showed that inhibition of miR‐7 reverses the enhancement on chemosensitivity of 5‐FU‐resistant BC cells caused by CDR1as silencing, which further provided certain ground for the implication of CDR1as and miR‐7 on chemosensitivity of 5‐FU‐resistant BC cells. This evidence concerns the gene LINC00632 and breast cancer.