The tumour size of CDR1as + miR‐7 mimic group was enlarged when compared with miR‐7 mimic group in the same time point (Figure 5D), indicating that overexpression of CDR1as can also reverse the enhancement on chemosensitivity of 5‐FU‐resistant BC cells caused by overexpression of miR‐7. This evidence concerns the gene LINC00632 and neoplasm.