MDK and cancer: For those without cancer recurrence during the study period (N = 151, “No Rec”), the expression of the KRT17, GPRC5A, and MDK remained similar to the thresholds for UBC detection, which was predetermined in the CSV phase of the study (Table 3), almost for 12 months after the TURBT, and gradually decreased over time and went below the thresholds only after 12–24 months.