IGFBP2 and breast cancer: Recent studies have demonstrated that miR‐204‐3p overexpression enriched glioma cell apoptosis by targeting IGFBP2,29 and that downregulating IGFBP2 suppressed glioma cell invasion and migration.30 Taken together with our study results, these results indicated an indispensable tumor‐suppressor mechanism for the miR‐1184/IGFBP2 pathway in BC.