Abstract
Background
Chemotherapy-induced thrombocytopenia is often a use-limiting adverse reaction to gemcitabine and cisplatin (GC) combination chemotherapy, reducing therapeutic intensity, and, in some cases, requiring platelet transfusion.
Objective
A retrospective cohort study was conducted on patients with urothelial cancer at the initiation of GC combination therapy and the objective was to develop a prediction model for the incidence of severe thrombocytopenia using machine learning.
Methods
We performed receiver operating characteristic analysis to determine the cut-off values of the associated factors. Multivariate analyses were conducted to identify risk factors associated with the occurrence of severe thrombocytopenia. The prediction model was constructed from an ensemble model and gradient-boosted decision trees to estimate the risk of an outcome using the risk factors associated with the occurrence of severe thrombocytopenia.
Results
Of 186 patients included in this study, 46 (25%) experienced severe thrombocytopenia induced by GC therapy. Multivariate analyses revealed that platelet count ≤ 21.4 (×104/µL) [odds ratio 7.19, p < 0.01], hemoglobin ≤ 12.1 (g/dL) [odds ratio 2.41, p = 0.03], lymphocyte count ≤ 1.458 (×103/µL) [odds ratio 2.47, p = 0.02], and dose of gemcitabine ≥ 775.245 (mg/m2) [odds ratio 4.00, p < 0.01] were risk factors of severe thrombocytopenia. The performance of the prediction model using these associated factors was high (area under the curve 0.76, accuracy 0.82, precision 0.68, recall 0.50, and F-measure 0.58).
Conclusions
Platelet count, hemoglobin level, lymphocyte count, and gemcitabine dose contributed to the development of a novel prediction model to identify the incidence of GC-induced severe thrombocytopenia.
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Shigeki Yamada has received honoraria from Nippon Shinyaku Co., Ltd, Pfizer Japan Inc., and Takeda Pharmaceutical Co., Ltd. Tomohiro Mizuno is an editorial board member of Clinical Drug Investigation. Noriaki Matsumoto, Yosuke Ando, Koki Kato, Masanori Nakanishi, Tsuyoshi Nakai, Jeannie K. Lee, Yoshitaka Kameya, Wataru Nakamura, Kiyoshi Takahara, and Ryoichi Shiroki declare no conflicts of interest regarding the subject of this study.
Ethics approval
This study was approved by the Ethics Board of Fujita Health University Hospital (Ethics Committee approval number: HM23-027; date of approval 9 May 2023) and was conducted in accordance with the appropriate guidelines.
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An opt-out approach was used to obtain informed consent according to the guidelines of the Fujita Health University Hospital Ethics Board.
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NM contributed to the study conception and design and drafted the manuscript. NM, KK, MN, and TN analyzed and interpreted the data. YA, JKL, YK, WN, KT, RS, and SY contributed to the study design and reviewed the manuscript. TM contributed to the study conception and design, drafted the manuscript, and supervised the execution of the study.
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Data archiving is not mandated but data will be made available on reasonable request.
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This work was supported by the JSPS KAKENHI (grant number 21K06696) and the Research Center for Pathogenesis of Intractable Diseases, Research Institute of Meijo University, Japan.
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Matsumoto, N., Mizuno, T., Ando, Y. et al. Prediction Model for Severe Thrombocytopenia Induced by Gemcitabine Plus Cisplatin Combination Therapy in Patients with Urothelial Cancer. Clin Drug Investig 44, 357–366 (2024). https://doi.org/10.1007/s40261-024-01361-3
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DOI: https://doi.org/10.1007/s40261-024-01361-3