OBJECTIVE: To evaluate the impact of inflammation and sampling on cytology, immunocytology, and fluorescence in situ hybridization (FISH) in comparison with NMP22 in hematuria patients. The specificity of urine markers for urothelial cancer is subject to exogenous factors. There is evidence that nuclear matrix protein 22 (NMP22) is influenced by urinary tract infection and instrumented urinary sampling (IUS). METHODS: Samples from 1386 patients with histologic work-up were included. Cytology, immunocytology, FISH, and NMP22-enzyme-linked immunosorbent assay were performed. The presence of inflammation was evaluated by microscopy. The method of urine sampling was recorded in all cases. Any type of urinary tract manipulation was considered as IUS. False-positive results were compared with regard to the presence or absence of inflammation and mechanical manipulation. RESULTS: In all, 1050 (75.7%) patients had no evidence of urothelial cancer. NMP22 results were false positive in 74.3% and 38.4% of patients with and without IUS (P < .0001). False-positive test rates of cytology, immunocytology, and FISH were not increased after manipulation. Inflammation led to a rise in false-positive NMP22 test results (85.3% vs 61.4%, P < .0001). The presence of inflammation did not change the rate of false-positive cytology, immunocytology, and FISH results. CONCLUSION: This is the first study to investigate the impact of inflammation and IUS on cell-based urine markers. In contrast to the protein test NMP22, these factors did not impair the performance of cell-based tests. Hence, patients with positive cytology, immunocytology, and FISH results should undergo diagnostic work-up, even in the case of concomitant inflammation or IUS. Copyright Â
OBJECTIVE: To evaluate the impact of inflammation and sampling on cytology, immunocytology, and fluorescence in situ hybridization (FISH) in comparison with NMP22 in hematuriapatients. The specificity of urine markers for urothelial cancer is subject to exogenous factors. There is evidence that nuclear matrix protein 22 (NMP22) is influenced by urinary tract infection and instrumented urinary sampling (IUS). METHODS: Samples from 1386 patients with histologic work-up were included. Cytology, immunocytology, FISH, and NMP22-enzyme-linked immunosorbent assay were performed. The presence of inflammation was evaluated by microscopy. The method of urine sampling was recorded in all cases. Any type of urinary tract manipulation was considered as IUS. False-positive results were compared with regard to the presence or absence of inflammation and mechanical manipulation. RESULTS: In all, 1050 (75.7%) patients had no evidence of urothelial cancer. NMP22 results were false positive in 74.3% and 38.4% of patients with and without IUS (P < .0001). False-positive test rates of cytology, immunocytology, and FISH were not increased after manipulation. Inflammation led to a rise in false-positive NMP22 test results (85.3% vs 61.4%, P < .0001). The presence of inflammation did not change the rate of false-positive cytology, immunocytology, and FISH results. CONCLUSION: This is the first study to investigate the impact of inflammation and IUS on cell-based urine markers. In contrast to the protein test NMP22, these factors did not impair the performance of cell-based tests. Hence, patients with positive cytology, immunocytology, and FISH results should undergo diagnostic work-up, even in the case of concomitant inflammation or IUS. Copyright Â
Authors: Mandy L Y Sin; Kathleen E Mach; Rahul Sinha; Fan Wu; Dharati R Trivedi; Emanuela Altobelli; Kristin C Jensen; Debashis Sahoo; Ying Lu; Joseph C Liao Journal: Clin Cancer Res Date: 2017-02-13 Impact factor: 12.531
Authors: Michael D Bell; Faysal A Yafi; Fadi Brimo; Jordan Steinberg; Armen G Aprikian; Simon Tanguay; Wassim Kassouf Journal: World J Urol Date: 2016-02-23 Impact factor: 4.226
Authors: Johannes Mischinger; Lutz Philipp Guttenberg; Jörg Hennenlotter; Georgios Gakis; Stefan Aufderklamm; Steffen Rausch; Eva Neumann; Jens Bedke; Stefan Kruck; Christian Schwentner; Arnulf Stenzl; Tilman Todenhöfer Journal: J Cancer Res Clin Oncol Date: 2016-12-02 Impact factor: 4.553
Authors: Susanne Deininger; J Hennenlotter; S Rausch; K Docktor; E Neumann; I A da Costa; J Bedke; A Stenzl; T Todenhöfer Journal: J Cancer Res Clin Oncol Date: 2018-04-19 Impact factor: 4.553