PMID- 21987521 OWN - NLM STAT- MEDLINE DCOM- 20130730 LR - 20130218 IS - 1097-0339 (Electronic) IS - 1097-0339 (Linking) VI - 41 IP - 3 DP - 2013 Mar TI - Exclusion of the uniform tetraploid cells significantly improves specificity of the urine FISH assay. PG - 218-25 LID - 10.1002/dc.21831 [doi] AB - The urine fluorescence in situ hybridization (FISH) assay (UroVysion), with the current scoring criteria, has a higher sensitivity than routine cytopathology but a lower specificity. Among 215 urine FISH tests we performed, 45 had associated histopathology and clinical follow up. In this study, a cell with four signals for each probe was classified as a uniform tetraploid cell (UTC); a presumed reparative cell which is currently classified as an abnormal cell in the FDA approved assay. By using the existing criteria, the tests were scored as positive or negative before and after exclusion of the UTCs. Before the exclusion, 24 positive, 13 negative, seven false positive, and one false negative result were obtained with 96% sensitivity and 65% specificity. After the exclusion, the results changed to 22 positive, 19 negative, one false positive, and three false negatives resulting in a 88% sensitivity of 88% and a 95% specificity; a significant improvement in the specificity. We conclude that exclusion of the UTCs as abnormal cells would result in a more solid performance of the FISH assay. CI - Copyright (c) 2011 Wiley Periodicals, Inc. FAU - Moatamed, Neda A AU - Moatamed NA AD - Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, USA. nmoatamed@mednet.ucla.edu FAU - Apple, Sophia K AU - Apple SK FAU - Bennett, Carol J AU - Bennett CJ FAU - Aronson, William J AU - Aronson WJ FAU - Klisak, Ivana AU - Klisak I FAU - Shirley, Bobbi-Jo AU - Shirley BJ FAU - Moatamed, Farhad AU - Moatamed F LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20111011 PL - United States TA - Diagn Cytopathol JT - Diagnostic cytopathology JID - 8506895 SB - IM MH - Aged MH - Aged, 80 and over MH - Carcinoma, Transitional Cell/genetics/pathology/*urine MH - Cytodiagnosis MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence/*methods MH - Male MH - Middle Aged MH - Regeneration MH - Sensitivity and Specificity MH - *Specimen Handling MH - *Tetraploidy MH - Urinalysis/methods MH - Urinary Bladder Neoplasms/genetics/pathology/*urine MH - Urine/cytology EDAT- 2011/10/12 06:00 MHDA- 2013/07/31 06:00 CRDT- 2011/10/12 06:00 PHST- 2011/04/25 00:00 [received] PHST- 2011/08/09 00:00 [accepted] PHST- 2011/10/12 06:00 [entrez] PHST- 2011/10/12 06:00 [pubmed] PHST- 2013/07/31 06:00 [medline] AID - 10.1002/dc.21831 [doi] PST - ppublish SO - Diagn Cytopathol. 2013 Mar;41(3):218-25. doi: 10.1002/dc.21831. Epub 2011 Oct 11.