Volume 131, Issue 5 pp. E693-E704
Early Detection and Diagnosis

CD31, EDNRB and TSPAN7 are promising prognostic markers in clear-cell renal cell carcinoma revealed by genome-wide expression analyses of primary tumors and metastases

Daniela Wuttig

Corresponding Author

Daniela Wuttig

Department of Urology, University Hospital Carl Gustav Carus, Dresden, Germany

Tel.: +49(0)6221-565964, Fax: +49(0)6221 565382

Cancer Genome Research, Division of Molecular Genetics, German Cancer Research Center and National Center for Tumor Diseases, Im Neuenheimer Feld 460, 69120 Heidelberg, GermanySearch for more papers by this author
Stefan Zastrow

Stefan Zastrow

Department of Urology, University Hospital Carl Gustav Carus, Dresden, Germany

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Susanne Füssel

Susanne Füssel

Department of Urology, University Hospital Carl Gustav Carus, Dresden, Germany

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Marieta I. Toma

Marieta I. Toma

Institute of Pathology, University Hospital Carl Gustav Carus, Dresden, Germany

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Matthias Meinhardt

Matthias Meinhardt

Institute of Pathology, University Hospital Carl Gustav Carus, Dresden, Germany

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Kristin Kalman

Kristin Kalman

Department of Urology, University Hospital Carl Gustav Carus, Dresden, Germany

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Kerstin Junker

Kerstin Junker

Department of Urology, Friedrich-Schiller-University, Jena, Germany

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Jimsgene Sanjmyatav

Jimsgene Sanjmyatav

Department of Urology, Friedrich-Schiller-University, Jena, Germany

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Kerstin Boll

Kerstin Boll

Department of Diagnostics and New Technologies, Fraunhofer Institute for Cell Therapy and Immunology, Leipzig, Germany

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Jörg Hackermüller

Jörg Hackermüller

Department of Diagnostics and New Technologies, Fraunhofer Institute for Cell Therapy and Immunology, Leipzig, Germany

Young Investigators Group Bioinformatics and Transcriptomics, Department Proteomics, Helmholtz Centre for Environmental Research – UFZ, Leipzig, Germany

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Axel Rolle

Axel Rolle

Department of Thoracic and Vascular Surgery, Coswig Specialized Hospital, Center for Pneumology, Thoracic and Vascular Surgery, Coswig, Germany

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Marc-Oliver Grimm

Marc-Oliver Grimm

Department of Urology, University Hospital Carl Gustav Carus, Dresden, Germany

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Manfred P. Wirth

Manfred P. Wirth

Department of Urology, University Hospital Carl Gustav Carus, Dresden, Germany

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First published: 31 December 2011
Citations: 70

Abstract

Currently used clinicopathological parameters are insufficient for a reliable prediction of metastatic risk and disease-free survival (DFS) of patients with clear-cell renal cell carcinoma (ccRCC). To identify prognostic genes, the expression profiles of primary ccRCC obtained from patients with different DFS — eight synchronously, nine metachronously and seven not metastasized tumors — were determined by genome-wide expression analyses. Synchronously and metachronously metastasized primary ccRCC differed in the expression of 167 genes. Thirty-six of these genes were also differentially expressed in synchronously vs. metachronously developed pulmonary metastases analyzed in a previous study. Because of their DFS-associated deregulation that is concordant in metastases and primary ccRCC, these genes are potentially functionally involved in metastatic tumor growth and are also prognostically useful. A prognostic impact was confirmed for the genes CD31, EDNRB and TSPAN7 at the mRNA level (n = 86), and for TSPAN7 at the protein level (n = 106). Patients with a higher gene expression of EDNRB or TSPAN7, or with TSPAN7-positive vessels in both cores investigated on tissue microarrays had a significantly longer DFS and tumor-specific survival (TSS). Patients with a higher CD31 gene expression showed a significantly longer TSS. EDNRB was an independent prognostic marker for the DFS. CD31, EDNRB and TSPAN7 had an independent impact on the TSS. In summary, comparative analysis of primary tumors and metastases is appropriate to identify independent prognostic markers in ccRCC. Gene expression of CD31 and EDNRB, and endothelial TSPAN7 protein level are potentially useful to improve outcome prediction because of their independent prognostic impact.

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