Development and validation of a model to predict the outcomes of radical cystectomy in patients with bladder cancer

Wataru Fukuokaya*, Jun Miki, Rikiya Taoka, Ryoichi Saito, Yoshiyuki Matsui, Shingo Hatakeyama, Takashi Kawahara, Ayumu Matsuda, Taketo Kawai, Minoru Kato, Tomokazu Sazuka, Takeshi Sano, Fumihiko Urabe, Soki Kashima, Hirohito Naito, Yoji Murakami, Naotaka Nishiyama, Hiroyuki Nishiyama, Hiroshi Kitamura, Takahiro Kimura

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

抄録

Objectives: This study aims to develop a prognostic model that estimates the post-operative risk of cancer-specific mortality in patients with bladder cancer who underwent radical cystectomy (RC). Methods: We analyzed the data from patients with bladder cancer who had undergone radical cystectomy without receiving adjuvant chemotherapy across 36 institutions in the Japan Urological Oncology Group. The data were randomly split into training (N = 1348) and validation sets (N = 674) in a 2:1 ratio. Twenty-five variables were analyzed, and a multivariable Cox regression model predicting cancer-specific mortality was developed and validated. Prognostic scores were categorized into good and poor prognostic groups based on the upper tertile. The performance of the model was compared against the CheckMate 274 risk classification as a reference, which is used for determining the indication of adjuvant nivolumab therapy. Results: The final model incorporated eight variables. In the validation set, it outperformed the CheckMate 274 risk classification with superior time-dependent area under the curves (5-year: 0.81 vs. 0.67) and was well-calibrated. Furthermore, our model reclassified 27.8% of patients categorized as high-risk by the CheckMate 274 risk classification into the good prognosis group. Conclusions: We developed and validated a prognostic model for patients with bladder cancer who underwent RC. This model will be beneficial in identifying patients with poor prognosis and those who are potential candidates for clinical trials of adjuvant therapy.

本文言語英語
ページ(範囲)1414-1422
ページ数9
ジャーナルInternational Journal of Urology
31
12
DOI
出版ステータス出版済み - 2024/12

ASJC Scopus 主題領域

  • 泌尿器学

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