Neal Shore, MD, FACS, discusses the safety profiles reported across the nadofaragene firadenovec, SunRISe-1, and NURE-COMBO trials, highlighting any unexpected toxicities observed with these novel therapies for non-muscle-invasive and muscle-invasive bladder cancer. Additionally, he reviews key limitations of the study designs or patient populations that may impact the interpretation and generalizability of the results from these trials.