A narrative review of management of muscle-invasive bladder cancer perioperative period: will continuous and combined treatment be the new trend?

Background and Objective: With the emergence of immunotherapy and targeted therapies, there are more options for the perioperative period management of muscle-invasive bladder cancer (MIBC), and various types of clinical studies are emerging, leading to the need to explore ways to choose the optimal treatment modality. This review aims to synthesize past and present treatment modalities and to explore future trends in the perioperative period cares of MIBC for the benefit of clinical practitioners. Methods: A non-systematic, literature search was conducted between March 5, 2023 and November 30, 2023 on PubMed using "perioperative period", "MIBC", "chemotherapy", "radiotherapy", "immunotherapy", "targeted treatment" and "combination" as keywords, along with a search for ongoing clinical studies that were related to the perioperative period of MIBC on classic.clinicaltrials.gov, some latest conference abstracts were also included as references. Key Content and Findings: The trend towards benefit from adjuvant chemotherapy in perioperative chemotherapy is gradually being recognized. Neoadjuvant immunotherapy, including single-agent immunization, like programmed cell death protein 1 (PD-1) inhibitors, programmed cell death 1 ligand 1 (PD-L1) inhibitors and cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) inhibitors, and double-immunization, has been confirmed by several clinical studies to be beneficial to clinical remission rates, and the combination regimen is superior to single-agent therapy. Targeted therapies such as antibody-drug conjugate (ADC) are entering MIBC perioperative studies. Multiple sequential and combination clinical studies are gradually disclosing preliminary data on efficacy and safety. Conclusions: Immunotherapy would become an essential perioperative treatment for MIBC, and continuous and integrated perioperative management may become the MIBC treatment mode of the future. ADC medicines will also be a hot research focus in the coming years.