Abstract
Purpose
The aim of this study was to analyse the influence of age on the treatment outcome and toxicity in patients with T1HG non-muscle invasive bladder cancers treated with BCG immunotherapy.
Methods
Data from 637 patients with primary T1HG bladder cancer who were treated between 1986 and 2016 in two academic centres were retrospectively reviewed. Median follow-up was 57 months. Patients were divided into two groups: younger (< 70 years old) and older (≥ 70 years old). Additional analyses in subgroups of older (> 75 and > 80) patients were performed. Log-rank test, Cox regression analysis, and propensity score matching were performed to compare the groups.
Results
There were 389 patients below and 248 patients above or equal 70 years old. Recurrence-free, progression-free, and cancer-specific survival rates did not differ significantly between younger and older patients. Recurrence-free survival for younger and older patients were 55.4% vs 52.9%, progression-free survival 75.9% vs 76.6%, and cancer-specific survival were 87.5% vs 89.9% (all p > 0.05). Differences in the oldest subgroups also did not reach statistical significance. In both regression analysis and propensity score matching, no statistically significant associations of age with any of analysed end-points were found. Finally, there were no statistically significant differences between younger and older group in terms of moderate and severe complications occurrence (47.6% vs. 44.5%; p > 0.05)
Conclusions
It was shown that increasing age was not associated with BCG immunotherapy oncological outcomes, or with BCG toxicity in T1HG non-muscle invasive bladder cancer.
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Data availability
Data are available for bona fide researchers who request it from the authors. Wojciech Krajewski had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
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This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
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WK: manuscript writing and project development. OR-F: manuscript editing and project development. AB: data management and manuscript writing. FP: data collection and manuscript writing. SP: data collection and manuscript writing. AT: data analysis and manuscript writing. RZ: data analysis and manuscript writing. AK: data analysis and manuscript writing. JP: data analysis and manuscript writing.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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This is retrospective observation. Informed consent was obtained from all individual participants at the time of their BCG therapy onset, stating that in future, their data may be included in the scientific studies.
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Krajewski, W., Rodríguez Faba, O., Breda, A. et al. Analysis of age influence on oncological results and toxicity of BCG immunotherapy in non-muscle invasive bladder cancer. World J Urol 38, 3177–3182 (2020). https://doi.org/10.1007/s00345-020-03130-1
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DOI: https://doi.org/10.1007/s00345-020-03130-1