Comparison of responses to neoadjuvant and adjuvant chemotherapies in muscle-invasive bladder cancer

Abstract

Bladder cancer surgery is critical for treatment, and systemic treatment before or after cystectomy may be necessary. We aimed to investigate the efficacy and response to neoadjuvant and adjuvant treatments. Data on 93 patients with resectable muscle-invasive bladder cancer were analyzed retrospectively. Patients who received neoadjuvant and adjuvant chemotherapies were included. The neoadjuvant treatment group was divided into pathological responders and non-responders. Overall survival and disease-free survival were calculated. The median age was 61.5 years; there were 6 female and 87 male patients. Baseline characteristics were similar between the groups. While there was no difference in OS between the neoadjuvant and adjuvant treatment groups (20 months vs. not reached), DFS was significantly higher in the adjuvant group (20.6 vs. 25.3 months). While there was no significant difference in DFS between the responders and non-responders to neoadjuvant treatment (20.6 vs. 19.1 months), OS was significantly longer in the responders (Not reached vs. 12.3 months). Our results concluded that neoadjuvant and adjuvant chemotherapies have similar survival rates, but no response was associated with poor outcomes. Determining the group for patient selection may be helpful for optimal management.