Concomitant antibiotics (ATBs) use and survival outcomes in patients (pts) with muscle-invasive bladder cancer (MIBC) treated with neoadjuvant pembrolizumab (PURE-01 study).

449Background: Administration of single-agent neoadjuvant immunotherapy (IO) proved to be effective and safe in the treatment of MIBC, and the identification of reliable predictors of treatment-fai...