BUB1 and neoplasm: BUB1, KIF2C, CDC20, and PBK were significantly highly expressed in tumor tissues, the older age group, and advanced stages of PCa (p < 0.05, Figure 9), which is in accordance with the results displayed in Figure 2, indicating that BUB1, KIF2C, CDC20, and PBK might promote the occurrence and progress of PCa.