DaBlaCa-17: nationwide observational study in Denmark on survival before and after implementation of neoadjuvant chemotherapy prior to cystectomy for muscle-invasive bladder cancer

Authors

  • Stefanie Korsgaard Körner Department of Urology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
  • Thomas Dreyer Department of Urology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
  • Andreas Carus Department of Oncology, Aalborg University Hospital, Aalborg, Denmark; Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
  • Line Hammer Dohn Department of Oncology, Herlev and Gentofte University Hospital, Copenhagen, Denmark
  • Ulla Nordström Joensen Department of Urology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark; Department of Clinical Medicine, Copenhagen University, Copenhagen, Denmark
  • Gitte Wrist Lam Department of Urology, Herlev and Gentofte University Hospital, Copenhagen, Denmark
  • Niels Viggo Jensen Department of Oncology, Odense University Hospital, Odense, Denmark
  • Knud Fabrin Department of Clinical Medicine, Aalborg University, Aalborg, Denmark; Department of Urology, Aalborg University Hospital, Aalborg, Denmark
  • Thor Knak Jensen Department of Urology, Odense University Hospital, Odense, Denmark
  • Helle Pappot Department of Clinical Medicine, Copenhagen University, Copenhagen, Denmark; Department of Oncology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
  • Mads Agerbæk Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
  • Jørgen Bjerggaard Jensen Department of Urology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark

DOI:

https://doi.org/10.2340/sju.v59.24024

Keywords:

Bladder cancer, Cystectomy, Oncological outcomes, Muscle-invasive, Neoadjuvant chemotherapy, survival

Abstract

Objective: To investigate the impact of neoadjuvant chemotherapy implementation with gemcitabine-cisplatin on survival outcomes for patients with muscle-invasive bladder cancer in Denmark.

Materials and Methods: Data were collected on all patients in Denmark undergoing radical cystectomy who were potential candidates for neoadjuvant chemotherapy from 2010 to 2015 (n = 851). A cohort before the implementation of neoadjuvant chemotherapy (Cohort 2010–12) was compared with a cohort after implementation (Cohort 2013–15). Patients in Cohort 2013–15 receiving neoadjuvant chemotherapy (+NAC, n = 213) were compared with patients in Cohort 2013–15 not receiving neoadjuvant chemotherapy (-NAC, n = 139). Pathological results after radical cystectomy and oncological outcomes were compared between the study cohorts. Overall survival, disease-free survival, and disease-specific survival were compared with Kaplan-Meier plots and with univariable and multivariable Cox regression. Kaplan-Meier estimates of overall survival were also performed separately for treating hospital and for pathological stage.

Results: Pathological T0 (pT0) was more frequent in patients who received neoadjuvant chemotherapy: 34% versus 18% when comparing Cohort 2013–15 with Cohort 2010–12 (p < 0.001), and 46% versus 16% in +NAC compared with -NAC (p < 0.001). Overall survival, disease-free survival, and disease-specific survival at 5 years after cystectomy were not improved in Cohort 2013–15 compared with Cohort 2010–12 with adjusted hazard ratios of 1.11 (95% confidence interval [CI]: 0.87–1.43), 1.02 (95% CI: 0.81–1.29), and 1.06 (95% CI: 0.80–1.41), respectively.

Conclusions: This observational study found no improved survival in a national cohort of patients with muscle-invasive bladder cancer undergoing radical cystectomy after implementation of NAC. However, reservations should be made regarding the study design and the true effect of NAC on survival outcomes.

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Author Biography

Andreas Carus, Department of Oncology, Aalborg University Hospital, Aalborg, Denmark; Department of Clinical Medicine, Aalborg University, Aalborg, Denmark

Department of Clinical Medicine, Aalborg University, Aalborg, Denmark

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Additional Files

Published

2024-02-26

How to Cite

Körner, S. K., Dreyer, T. ., Carus, A., Dohn, L. H. ., Joensen, U. N. ., Lam, G. W. ., … Jensen, J. B. . (2024). DaBlaCa-17: nationwide observational study in Denmark on survival before and after implementation of neoadjuvant chemotherapy prior to cystectomy for muscle-invasive bladder cancer. Scandinavian Journal of Urology, 59, 39–46. https://doi.org/10.2340/sju.v59.24024

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