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Updated: Aug 21, 2026
Magnetic Resonance Imaging Assessment of Carcinogen-induced Murine Bladder Tumors
Published on: March 29, 2019
Evaluation of nuclear matrix protein-22 as a clinical diagnostic marker for bladder cancer
Yih-Hsin Chang1, Cheng-Hua Wu, Yao-Ling Lee
1School of Medical Technology, Chung Shan Medical University, Taichung, Taiwan, Republic of China.
Objectives:
To evaluate prospectively the prognostic power of urinary nuclear matrix protein-22 (NMP-22) for bladder cancer in Taiwanese screening and surveillance settings.
Methods:
Single voided urine samples were obtained from 68 healthy individuals, 303 patients with benign urothelial diseases, and 28 patients with urogenital tumors. The NMP-22 levels in the urine samples were measured using enzyme-linked immunosorbent assay methods.
Results:
The median NMP-22 level in healthy individuals and patients with benign and malignant disease was 5.9, 4.8, and 7.4 U/mL, respectively. The positive NMP-22 rate in healthy individuals and patients with benign and malignant disease was 4.4%, 17.2%, and 50%, respectively. The sensitivity, specificity, positive predictive value, and negative predictive value was 50%, 82.8%, 21.2%, and 94.7%, respectively, using 7.5 U/mL as the cutoff value.
Conclusions:
Our data demonstrated that NMP-22 is not a good diagnostic tool for screening or follow-up surveillance of bladder cancer owing to its low sensitivity and positive predictive value. Nevertheless, it could be adopted as a tool to rule out the possibility or risk of developing bladder cancer because of its high negative predictive value in our study.
