MODERN: An Integrated Phase 2/3 and Phase 3 Trial of MRD-Based Optimization of ADjuvant ThErapy in URothelial CaNcer A032103

This study is being done to answer the following question: After having your bladder surgically removed after being diagnosed with bladder cancer, can we better identify which patients need an additional treatment called immunotherapy to help prevent the cancer from coming back?

We are doing this study because we want to find out if this approach is better or worse than the usual approach for bladder cancer. The usual approach is defined as care most people get for bladder cancer.