As shown in Figures 7A–I, there were negative expression correlations of hsa-let-7a-5p-CCNB2, hsa-let-7c-5p-CCNB2, hsa-let-7a-5p-AURKB, hsa-miR-30a-5p-CDC20, hsa-miR-30a-5p-MYBL2, hsa-miR-29c-3p-OIP5, hsa-miR-10b-5p-CHAF1B, hsa-miR-195-5p-CCNE1, and hsa-miR-497-5p-CCNE1 in ERα positive breast cancer. This evidence concerns the gene CCNE1 and breast cancer.