1. Serum D-asparagine concentration adjusted for eGFR could serve as a novel screening tool for urothelial carcinoma.
- Author
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Yamamoto A, Kawashima A, Sakai S, Mita M, Sassi N, Inoguchi S, Horibe Y, Yoshimura A, Tani M, Yutong L, Okuda Y, Oka T, Uemura T, Yamamichi G, Ishizuya Y, Hayashi T, Yamamoto Y, Kato T, Hatano K, Kakuta Y, Imamura R, Takahara S, Kimura T, and Nonomura N
- Subjects
- Humans, Male, Female, Middle Aged, Aged, Early Detection of Cancer methods, Biomarkers, Tumor blood, Biomarkers, Tumor urine, Sensitivity and Specificity, Urologic Neoplasms blood, Urologic Neoplasms diagnosis, Urinary Bladder Neoplasms blood, Urinary Bladder Neoplasms diagnosis, Urinary Bladder Neoplasms urine, Urothelium pathology, Urothelium metabolism, Carcinoma, Transitional Cell blood, Carcinoma, Transitional Cell diagnosis, Carcinoma, Transitional Cell urine, Asparagine blood, Glomerular Filtration Rate
- Abstract
The sensitivity of currently available screening tools for urothelial carcinoma (UC) remains unsatisfactory particularly at early stages. Hence, we aimed to establish a novel blood-based screening tool for urothelial carcinoma. We measured serum d-amino acid levels in 108 and 192 patients with and without UC individuals in the derivation cohort, and 15 and 25 patients with and without UC in the validation cohort. Serum d-asparagine levels were significantly higher in patients with UC than in those without UC (p < 0.0001). We developed a novel screening equation for the diagnosis of urothelial carcinoma using d-asparagine in serum and estimated the glomerular filtration rate (eGFR). Serum d-asparagine levels adjusted for eGFR exhibited high performance in the diagnosis of UC (AUC-ROC, 0.869; sensitivity, 80.6 %; specificity, 82.7 %), even in early-stage UC (AUC-ROC: 0.859, sensitivity: 83.3 %, specificity: 82.3 %), which were previously misdiagnosed via urinary occult blood or urine cytology. This established strategy combined with urinary occult blood, improves diagnostic ability (sensitivity: 93.7 %, specificity: 70.1 %)., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
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