CCNA2 and neoplasm: We found 5 hub genes were related to clinicopathological parameters, including CDK1, CCNB1, CCNA2, MAD2L1, and DLGAP5. Additionally, we observed that these five genes were significantly overexpressed in tumour tissues (Figures 6(a), 6(d), 6(g), 6(j), and 6(m)).