The impact of blue light cystoscopy use among patients with non-muscle invasive bladder cancer in an equal access setting.

Authors

null

Sanjay Das

UCLA Health, Department of Urology, Los Angeles, CA

Sanjay Das , Lin Gu , Claire Trustram Eve , Joshua Parrish , Amanda Marie De Hoedt , Chad McKee , William Aronson , Stephen J. Freedland , Stephen B. Williams

Organizations

UCLA Health, Department of Urology, Los Angeles, CA, Durham Veterans Affairs Health Care System, Durham, NC, Durham VA Health Care System, Durham, NC, Institute for Medical Research, Durham VA Health Care System, Durham, NC, Photocure, Inc., Princeton, NJ, University of California - Los Angeles, Department of Urology, Los Angeles, CA, Cedars-Sinai Medical Center, Los Angeles, CA, Department of Surgery, Division of Urology, The University of Texas Medical Branch, Galveston, TX

Research Funding

Pharmaceutical/Biotech Company
Photocure, Inc, U.S. National Institutes of Health

Background: Prior studies suggest that white light cystoscopy (WLC) alone can fail to detect cases of non-muscle invasive bladder cancer (NMIBC) compared to blue light cystoscopy (BLC). We describe bladder cancer outcomes and the impact of BLC among NMIBC patients in an equal access setting. Methods: A total of 378 NMIBC patients within the Veterans Affairs system that had a CPT code for BLC from December 1, 2014 to December 31, 2020 were assessed. We determined recurrence rates and time to recurrence prior to BLC (i.e. after previous WLC if available) and following BLC. We used the Kaplan-Meier method to estimate event-free survival and Cox regression to determine the association between race and recurrence, progression, and overall survival. Results: Of 378 patients with complete data, 43 (11%) were Black and 300 (79%) White. Median follow-up was 40.7 months from bladder cancer diagnosis. There were 194 (51%) patients with either TaHG or T1 without CIS; 52 (14%) had CIS with or without TaHG or T1; and 127 (34%) had TaLG only. A total of 239 (63%) patients received BCG at any point during the study. Median time to first recurrence following BLC was longer compared to WLC alone (40 (33-NE) vs. 26 (17-39) months). The risk of recurrence was significantly lower following BLC (Hazard Ratio (HR) 0.70; 95% Confidence Interval (CI) 0.54-0.90). There was no significant difference in recurrence (Hazard Ratio (HR) 0.83; 95% Confidence Interval (CI) 0.48-1.43), progression (HR 1.46; 95% CI 0.45-4.74), and overall survival (HR 0.69; 95% CI 0.29-1.65) following BLC by Black vs. White race. Conclusions: In this study from an equal access setting in the VA, we observed significantly decreased risk of recurrence and prolonged time interval to recurrence following BLC compared to WLC alone. There was no difference in any bladder cancer outcomes by race.

Disclaimer

This material on this page is ©2024 American Society of Clinical Oncology, all rights reserved. Licensing available upon request. For more information, please contact licensing@asco.org

Abstract Details

Meeting

2023 ASCO Genitourinary Cancers Symposium

Session Type

Poster Session

Session Title

Poster Session B: Prostate Cancer and Urothelial Carcinoma

Track

Urothelial Carcinoma,Prostate Cancer - Advanced

Sub Track

Quality of Care/Quality Improvement and Real-World Evidence

Citation

J Clin Oncol 41, 2023 (suppl 6; abstr 461)

DOI

10.1200/JCO.2023.41.6_suppl.461

Abstract #

461

Poster Bd #

H2

Abstract Disclosures