FGFR3 and renal pelvis/ureter urothelial carcinoma: Recent research strongly underscores the significance of FGFR inhibition in UTUC: an integrated analysis incorporating whole-exome sequencing and RNA sequencing of UTUC has unveiled that a majority of UTUC cases (approximately 60%) exhibit a molecular subtype (e.g., luminal-papillary subtype) characterized by elevated FGFR3 expression [50].