CXCR4 and nephrolithiasis: To investigate whether certain CaOx-related proteins exhibit association with nephrolithiasis, we conducted this prospective study aiming at assessing the alterations in the urinary excretion levels of CaOx-related proteins, including HA, NRP, NPC, SLC26A6, THP, OPN, CXCR4, MMP-2, and MMP-9, in CaOx stones patients before and after extracorporeal shock wave lithotripsy (ESWL).