title: Sciellin is a marker for papillary renal cell tumours.
abstract: There are no adequate immunohistochemical markers for papillary renal cell tumours. The aim of this study was to establish a gene expression profile of papillary renal cell tumours using an expression microarray approach. Through hierarchical clustering and significant analysis of microarrays, we have selected the best 13 genes and analysed their expression by real-time polymerase chain reaction (RT-PCR). Of these genes, we selected SCEL as potential marker of interest. Immunohistochemical staining of tissue microarrays containing all major types of kidney cancers revealed positive staining for sciellin in 87 of 114 papillary renal cell tumours and in 13 of 19 precursor lesions. No other renal tumour types were positive for sciellin. Our study indicates that although not all tumours express sciellin, its expression may help to confirm the diagnosis papillary renal cell tumour.
authors.affiliation: Medical Faculty, University of Pecs, Pécs, Hungary.
authors.forename: Anetta
authors.initials: A
authors.lastname: Nagy
authors.affiliation: Department of Urology, University of Pecs, Pécs, Hungary.
authors.forename: Daniel
authors.initials: D
authors.lastname: Banyai
authors.affiliation: Department of Pathology, University of Pecs, Pécs, Hungary.
authors.forename: David
authors.initials: D
authors.lastname: Semjen
authors.affiliation: Department of Urology, University of Pecs, Pécs, Hungary.
authors.forename: Tamas
authors.initials: T
authors.lastname: Beothe
authors.affiliation: Medical Faculty, University of Pecs, Hungary and Medical Faculty, Ruprecht-Karls-University, Heidelberg, Germany. gyula.kovacs@urz.uni-heidelberg.de.
authors.forename: Gyula
authors.initials: G
authors.lastname: Kovacs
keywords: Gene expression profile; Immunohistochemistry; Papillary renal cell tumour; Sciellin