Purpose The aim of this study was to evaluate the overexpression of human epidermal
growth factor receptor 2 (HER2) in patients with bladder cancer (BCa) and to assess its
association with oncological outcomes. Methods This retrospective single-center study
included 354 patients with BCa treated with radical cystectomy (RC). HER2 status was
assessed with immunohistochemistry and scored according to HercepTest. Conditional
survival and competing risk regression were performed to assess the association between�…