A population-based analysis of patterns of care in patients with high-risk non-muscle-invasive bladder cancer from Alberta, Canada

Auteurs-es

  • Geoffrey Gotto University of Calgary
  • Nimira S. Alimohamed University of Calgary
  • Girish S. Kulkarni University of Toronto
  • Peter C. Black University of British Columbia
  • Wassim Kassouf McGill University
  • Andrea Kokorovic Dalhousie University
  • Bernhard J. Eigl BC Cancer, Vancouver
  • Normand Blais Université de Montréal
  • Aly-Khan A. Lalani McMaster University
  • Winson Y. Cheung University of Calgary
  • Mariet Stephen University of Calgary
  • Brendan J.W. Osborne Johnson & Johnson Innovative Medicine
  • Christopher J.D. Wallis University of Toronto

DOI :

https://doi.org/10.5489/cuaj.9110

Mots-clés :

Non muscle invasive bladder cancer, TURBT, BCG, Outcomes, Survival, Intravesical therapy

Résumé

INTRODUCTION: Approximately three-quarters of patients newly diagnosed with bladder cancer have non-muscle-invasive disease (NMIBC). Among these patients, those with high-risk (HR) features should be managed more aggressively in an attempt to circumvent the elevated risk of recurrence/progression. Population-based data on the incidence of HR-NMIBC and receipt of guideline-recommended care are limited.

METHODS: This retrospective, observational study gathered data from multiple linked provincial (Alberta) healthcare databases to describe baseline characteristics, treatment patterns, and survival outcomes in a population of individuals diagnosed with HR-NMIBC from 2010-2020. Data for all patients aged >18 years with T1, Tis, or high-grade Ta NMIBC (“high-risk”) were analyzed using basic statistics, multivariate regression analyses, and the Kaplan-Meier method.

RESULTS: Of 6837 de novo NMIBC patients identified, 3874 (57%) were categorized as HR-NMIBC. The majority (82%) were male with a median age of 72 years, and approximately half had a Charlson comorbidity index score ≥1. Following initial transurethral resection of bladder tumor (TURBT), 61% of the cohort received no adjuvant bacillus Calmette-Guérin (BCG) or chemotherapy, while 36% received BCG, 3% gemcitabine, and 1% mitomycin C. Patients underwent a median of four TURBT procedures. ‘Adequate BCG’ (≥5 induction doses + ≥2 maintenance doses) was received by 32% of BCG-treated and 12% of all HR-NMIBC patients. Survival was improved in patients receiving adequate BCG.

CONCLUSIONS: Data from this large, real-world population highlights poor use of induction/ maintenance BCG therapy following TURBT among patients with HR-NMIBC.

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Bibliographies de l'auteur-e

Geoffrey Gotto, University of Calgary

Clinical Professor, Departments of Surgery and Oncology, The University of Calgary, Calgary, AB, Canada.

Medical Director, Clinic for Advanced and Metastatic Prostate Cancer (CAMP), Prostate Cancer Centre

Urologic Oncologist, Southern Alberta Institute of Urology

Suite 6625 - 7007 14th Street SW

Calgary, AB T2V 1P9

Canada

Office: (403) 943-8921  

E-mail: drgotto@gmail.com

Nimira S. Alimohamed, University of Calgary

Department of Medicine, Division of Medical Oncology, Tom Baker Cancer Centre, University of Calgary, Calgary, Alberta, Canada.

Girish S. Kulkarni, University of Toronto

Divisions of Urology and Surgical Oncology, Department of Surgery, University Health Network, University of Toronto, Toronto, Ontario, Canada.

Peter C. Black, University of British Columbia

Department of Urologic Sciences, University of British Columbia, Vancouver, British Columbia, Canada.

Wassim Kassouf, McGill University

Department of Surgery (Urology), McGill University Health Center, Montreal, Quebec, Canada.

Bernhard J. Eigl, BC Cancer, Vancouver

BC Cancer, Vancouver, British Columbia, Canada.

Normand Blais, Université de Montréal

Division of Medical Oncology and Hematology, Department of Medicine, Centre Hospitalier de l'Université de Montréal; Université de Montréal, Montreal, Quebec, Canada.

Aly-Khan A. Lalani, McMaster University

Department of Oncology, Juravinski Cancer Centre, McMaster University, Hamilton, Ontario, Canada.

Christopher J.D. Wallis, University of Toronto

Urologic Oncology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada.

Publié-e

2025-07-08

Comment citer

Gotto, G., Alimohamed, N. S., Kulkarni, G. S., Black, P. C., Kassouf, W., Kokorovic, A., … Wallis, C. J. (2025). A population-based analysis of patterns of care in patients with high-risk non-muscle-invasive bladder cancer from Alberta, Canada. Canadian Urological Association Journal, 19(10), 302–10. https://doi.org/10.5489/cuaj.9110

Numéro

Rubrique

Original Research