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Inoue, Yuta; Yamada, Takeshi; Fujihara, Atsuko; Miyashita, Masatsugu; Shiraishi, Takumi; Okumi, Masayoshi; Hongo, Fumiya; Ukimura, Osamu
Scientific reports, 10/2023, Volume: 13, Issue: 1Journal Article
Abstract Although recent clinical trials of new therapeutic agents for metastatic urothelial carcinoma have shown prolonged overall survival, there are few real-world evidence. To assess the impact of new therapeutic agents, we performed retrospective analysis for consecutive 158 metastatic urothelial carcinoma patients who performed systemic therapy in our institution between May 2008 and August 2023. We defined a period from May 2008 to December 2017, when pembrolizumab was first introduced to the clinical setting in the new therapeutic agents for metastatic urothelial carcinoma in Japan, as “pre new drug era” and a period from January 2018 to August 2023 as “post new drug era”. We compared overall survival between pre- and post- new drug era using Kaplan–Meier method with log rank test. Median overall survival of pre- and post- new drug era were 14.5 months (95% confidence intervals: 11.6–16.7) and 23.1 months (95% confidence intervals: 14.5-NA), respectively (p < 0.001). Five-year survival rate of pre- and post- new drug era was 7.0% (95% confidence intervals: 2.3–15.3) and 36.3% (95% confidence intervals: 21.4–51.5), respectively. Multivariable Cox proportional hazards regression analysis of factors associated with overall survival showed that enfortumab vedotin administration, administration of second-line or more systemic therapy, best overall response of SD, PR and CR in first-line systemic therapy, higher serum albumin and lower CRP were factors for overall survival prolongation. Introduction of new therapeutic agents for metastatic urothelial carcinoma contributed to the improvement of overall survival in comparison with the era without these agents.
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