LINC00632 and breast cancer: circRNAs could regulate gene expression at different levels by interacting with different DNA, miRNA, lncRNA or proteins to modulate different kinds of cell physiological and pathological processes.40, 41 Furthermore, we also found that CDR1as competitively inhibits miR‐7 and down‐regulates REGγ expression, and inhibition of miR‐7 can reverse the enhanced sensitivity of silenced CDR1as to drug‐resistant breast cancer cells.