BUB1B and hepatocellular carcinoma: Gene pathway analysis of the identified hub genes included RRM2, MELK, KIF11, KIF23, NCAPG, DLGAP5, BUB1B, AURKB, CCNB1, KIF20A, CCNA2, TTK, PBK, TOP2A, CDK1, MAD2L1, BIRC5, ASPM, CDCA8, and CENPF revealed their performance in HCC‐related pathways.