CHEK1 and neoplasm: Specifically, PIWIL4, SATB1, GSE1, NCOR1, SAP30L, ATM, and BMI1 were significantly downregulated in tumor tissues relative to normal controls, while BUB1, CHEK1, MASTL, DNAJC2, UBE2D1, and SSRP1 showed pronounced upregulation (Figures 6A, B).