Abstract
Objectives
Atypical cells (Atyp.C), as a new parameter determined by an automated urine analyzer, can be suspected of being malignant tumor cells. We evaluated the extent to which the Atyp.C can predict the existence of malignant tumor cells.
Methods
A total of 3,315 patients (1,751 in the training cohort and 1,564 in the testing cohort) were recruited and divided into five groups, namely, primary bladder cancer (BCa), recurrent BCa, post-treatment monitoring of BCa, other urological tumors, and controls. Urine Atyp. C, bacteria, white blood cell, and red blood cell were measured by a Sysmex UF-5000 analyzer. We compared the Atyp.C values across the different groups, sexes, and tumor stages. The diagnostic performance of Atyp.C alone and in combination with other parameters for detecting BCa was evaluated using receiver operating characteristic (ROC) curve analysis.
Results
The Atyp.C value of the primary BCa group was significantly higher than that in the other groups, except recurrent BCa group. The Atyp.C value was closely related to tumor staging. Atyp.C combined with bacteria had the highest diagnostic performance for primary BCa [training cohort AUC: 0.781 (95 % CI: 0.761–0.801); testing cohort AUC: 0.826 (95 % CI: 0.806–0.845)]. The AUC value of diagnosed recurrent BCa by Atyp.C plus bacteria for the training cohort was 0.784 (95 % CI: 0.762–0.804).
Conclusions
Atyp.C was high in primary BCa patients and the combination of bacteria and Atyp.C showed high predictive value for primary BCa, suggesting that Atyp.C may be a useful objective indicator for the early detection of BCa.
Funding source: CAMS Innovation Fund for Medical Sciences
Award Identifier / Grant number: 2019-I2M-5-027
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Research ethics: This study was reviewed and approved by the Ethics Committee of the First Hospital of China Medical University (Reference No. 2024–121).
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Informed consent: Not applicable.
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Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.Hong Luan conceived the ideas. Yinling Wang, Jun Zheng, Yang Liu collected the samples, analyzed the data, and wrote the draft; Dongqi Li, Danning Jin, Hong Luan reviewed the manuscript. All authors have read and approved the final manuscript.
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Competing interests: The authors state no conflict of interest.
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Research funding: This study was supported by grants from CAMS Innovation Fund for Medical Sciences (2019-I2M-5–027).
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Data availability: The raw data can be obtained on request from the corresponding author.
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Supplementary Material
This article contains supplementary material (https://doi.org/10.1515/cclm-2024-0650).
© 2024 Walter de Gruyter GmbH, Berlin/Boston
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