FGFR3 and urinary bladder neoplasm: As mutations of FGFR3 are found in up to 80% of primary Ta tumours, which are characterized by a high recurrence rate, detection of FGFR3 mutations in urine is currently under study as a noninvasive and inexpensive method for the surveillance of superficial FGFR3 mutation-positive bladder tumours.