FGFR4 and breast cancer: Urothelial tumors accounted for 32% of cases, followed by breast cancer at approximately 20%.26In a Chinese patient population dataset of 10,194 solid tumors (China Pan-cancer dataset from Cbioportal database),37FGFR mutation frequencies were higher than in the Western population, with FGFR1 at 10.68%, FGFR2 at 8.06%, FGFR3 at 5.94%, and FGFR4 at 4.79%.