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Am J Clin Pathol. 2000 May;113(5):683-7.

Uroplakin III is a highly specific and moderately sensitive immunohistochemical marker for primary and metastatic urothelial carcinomas.

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1
Institute of Pathology, Charité University Hospital, Berlin, Germany.

Abstract

Uroplakins are specific differentiation products of terminally differentiated superficial urothelial cells. We tested the value of a new commercially available monoclonal antibody against uroplakin III (clone AU 1) as a paraffin-reactive immunohistochemical marker for primary and metastatic urothelial carcinomas. The study cases included 67 urothelial carcinomas of the urinary tract (35 primary tumors, 32 metastases) and 318 nonurothelial carcinomas, as well as 5 benign Brenner tumors and 2 transitional cell carcinomas of the ovaries. Uroplakin III was detected in 21 (60%) of the primary urothelial carcinomas and 17 (53%) of the metastases, resulting in an overall sensitivity of 0.57. The studied Brenner tumors also were immunoreactive for uroplakin III. All other studied carcinomas were consistently uroplakin III-negative (specificity 1.00). We found the new monoclonal antibody AU 1 against uroplakin III to be a highly specific paraffin-reactive immunohistochemical marker for urothelial tumors with a moderate sensitivity for the identification of primary and metastatic urothelial carcinomas.

PMID:
10800401
DOI:
10.1309/PYQC-17CB-063T-Q07J
[Indexed for MEDLINE]
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