KCNN4 and cancer: According to the univariate Cox analysis results, KCNN4 was also a positive prognostic factor in the following pan-cancer types (Figures 5A–C), containing BLCA (DSS: HR = 0.997, p = 0.049; PFI: HR = 0.997, p = 0.038), PRAD (PFI: HR = 0.997, p = 0.041), THYM (OS: HR = 0.847, p = 0.006), SKCM (OS: HR = 0.997, p < 0.001; DSS: HR = 0.997, p < 0.001), and UCEC (DSS: HR = 0.991, p = 0.014; PFI: HR = 0.995, p = 0.013).