CCNB2 and neoplasm: Based on this inference, we screened three key miRNAs (hsa-miR-10b-3p, hsa-miR-23b-3p, and hsa-miR-139-3p) targeting four hub mRNAs (CCNB2, KIF18B, PLK1, and TOP2A) using the correlation analysis, survival analysis, expression analyses in stage, distant metastasis, tumor, and normal tissues.