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Article Abstract
Introduction: Approximately 25% of patients diagnosed with bladder cancer have muscle-invasive disease (MIBC). While real-world data have highlighted opportunities to improve curative-intent treatment rates, comprehensive population-level data in Canada are limited. This study aimed to assess patterns of care and outcomes in a real-world cohort of MIBC in Canada.
Methods: This retrospective, observational study describes baseline characteristics, treatment patterns, and overall survival (OS) of individuals with de novo MIBC diagnosed between 2010 and 2020 in Alberta, Canada. Data from adult patients with MIBC (T2-4N0-1M0) were obtained from administrative databases and analyzed using basic statistics, multivariate regression analyses, and the Kaplan-Meier method.
Results: We identified 1292 patients with de novo MIBC. Of these, 76% were male with a median age of 73 years, 68% had cT2, and 76% had cN0 disease; approximately half had a Charlson comorbidity index (CCI) ≥1. Overall, 25% did not receive active treatment while 58% received curative-intent treatment (49% underwent radical cystectomy [RC] and 9% received chemoradiotherapy) and 17% received some form of non-curative-intent treatment. Of those who underwent RC, 45% received neoadjuvant chemotherapy (NAC). Median overall survival (mOS) in the entire cohort was 2.1 years (95% confidence interval 1.9-2.4). Key predictors of inferior survival were age ≥76 years, CCI score of ≥1, T4 tumor stage, or not receiving NAC.
Conclusions: This real-world analysis highlights opportunities to improve outcomes for patients with MIBC. Increasing access to curative-intent treatments, particularly in the elderly and those with comorbidities, is likely to enhance patient care and outcomes.
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