Value of metastin receptor immunohistochemistry in predicting metastasis after radical nephrectomy for pT1 clear cell renal cell carcinoma

KISS - 1 is a metastasis-suppressor gene of human melanoma, and encodes metastin, which was identified as the ligand of a G-protein-coupled receptor (metastin receptor). The precursor protein is cleaved to 54 amino acids, which may be further truncated into carboxy-terminal fragments. Previous studi...

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Veröffentlicht in:Clinical & experimental metastasis 2013-06, Vol.30 (5), p.607-614
Hauptverfasser: Shoji, Sunao, Nakano, Mayura, Tomonaga, Tetsuro, Kim, Hakushi, Hanai, Kazuya, Usui, Yukio, Nagata, Yoshihiro, Miyazawa, Masaki, Sato, Haruhiro, Tang, Xian Yang, Osamura, Yoshiyuki Robert, Uchida, Toyoaki, Terachi, Toshiro, Takeya, Koichi
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container_end_page 614
container_issue 5
container_start_page 607
container_title Clinical & experimental metastasis
container_volume 30
creator Shoji, Sunao
Nakano, Mayura
Tomonaga, Tetsuro
Kim, Hakushi
Hanai, Kazuya
Usui, Yukio
Nagata, Yoshihiro
Miyazawa, Masaki
Sato, Haruhiro
Tang, Xian Yang
Osamura, Yoshiyuki Robert
Uchida, Toyoaki
Terachi, Toshiro
Takeya, Koichi
description KISS - 1 is a metastasis-suppressor gene of human melanoma, and encodes metastin, which was identified as the ligand of a G-protein-coupled receptor (metastin receptor). The precursor protein is cleaved to 54 amino acids, which may be further truncated into carboxy-terminal fragments. Previous studies showed that lack of metastin receptor in clear cell renal cell carcinoma (RCC) is associated with tumor progression, but the prediction of metastasis in patients with pT1 clear cell RCC after radical nephrectomy is difficult. The objective of this study was to evaluate the usefulness of metastin receptor immunohistochemistry in predicting metastasis after nephrectomy for pT1 clear cell RCC. After verification of the correlation between immunostaining and mRNA expression, we evaluated the clinical value of metastin receptor immunohistochemistry. Fifty-four patients were enrolled in this study; following radical nephrectomy, seven patients were found to have lung metastasis. The sensitivity, specificity, positive predictive value, and negative predictive value with negative immunostaining of metastin receptor were 85.7, 97.6, 46.2, and 97.6 %, respectively. Metastasis-free survival rates were significantly higher in patients with positive staining (97.6 %) than in patients with negative staining (53.8 %) ( P  
doi_str_mv 10.1007/s10585-012-9564-3
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The precursor protein is cleaved to 54 amino acids, which may be further truncated into carboxy-terminal fragments. Previous studies showed that lack of metastin receptor in clear cell renal cell carcinoma (RCC) is associated with tumor progression, but the prediction of metastasis in patients with pT1 clear cell RCC after radical nephrectomy is difficult. The objective of this study was to evaluate the usefulness of metastin receptor immunohistochemistry in predicting metastasis after nephrectomy for pT1 clear cell RCC. After verification of the correlation between immunostaining and mRNA expression, we evaluated the clinical value of metastin receptor immunohistochemistry. Fifty-four patients were enrolled in this study; following radical nephrectomy, seven patients were found to have lung metastasis. The sensitivity, specificity, positive predictive value, and negative predictive value with negative immunostaining of metastin receptor were 85.7, 97.6, 46.2, and 97.6 %, respectively. Metastasis-free survival rates were significantly higher in patients with positive staining (97.6 %) than in patients with negative staining (53.8 %) ( P  &lt; 0.001). In univariate analysis for metastasis-free survival, negative immunostaining of metastin receptor was a significant risk factor for metastasis ( P  = 0.001). Furthermore, negative immunostaining of metastin receptor was an independent predictor for metastasis in multivariate analysis (hazard ratio, 3.735; 95 % CI 0.629–22.174; P  = 0.002). 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experimental metastasis</jtitle><stitle>Clin Exp Metastasis</stitle><addtitle>Clin Exp Metastasis</addtitle><date>2013-06-01</date><risdate>2013</risdate><volume>30</volume><issue>5</issue><spage>607</spage><epage>614</epage><pages>607-614</pages><issn>0262-0898</issn><eissn>1573-7276</eissn><coden>CEXMD2</coden><abstract>KISS - 1 is a metastasis-suppressor gene of human melanoma, and encodes metastin, which was identified as the ligand of a G-protein-coupled receptor (metastin receptor). The precursor protein is cleaved to 54 amino acids, which may be further truncated into carboxy-terminal fragments. Previous studies showed that lack of metastin receptor in clear cell renal cell carcinoma (RCC) is associated with tumor progression, but the prediction of metastasis in patients with pT1 clear cell RCC after radical nephrectomy is difficult. The objective of this study was to evaluate the usefulness of metastin receptor immunohistochemistry in predicting metastasis after nephrectomy for pT1 clear cell RCC. After verification of the correlation between immunostaining and mRNA expression, we evaluated the clinical value of metastin receptor immunohistochemistry. Fifty-four patients were enrolled in this study; following radical nephrectomy, seven patients were found to have lung metastasis. The sensitivity, specificity, positive predictive value, and negative predictive value with negative immunostaining of metastin receptor were 85.7, 97.6, 46.2, and 97.6 %, respectively. Metastasis-free survival rates were significantly higher in patients with positive staining (97.6 %) than in patients with negative staining (53.8 %) ( P  &lt; 0.001). In univariate analysis for metastasis-free survival, negative immunostaining of metastin receptor was a significant risk factor for metastasis ( P  = 0.001). Furthermore, negative immunostaining of metastin receptor was an independent predictor for metastasis in multivariate analysis (hazard ratio, 3.735; 95 % CI 0.629–22.174; P  = 0.002). In conclusion, our study suggests that negative expression of metastin receptor in clear cell RCC is significantly related to metastasis.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><pmid>23277422</pmid><doi>10.1007/s10585-012-9564-3</doi><tpages>8</tpages></addata></record>
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source MEDLINE; Springer Nature - Complete Springer Journals
subjects Adult
Aged
Biomarkers, Tumor - metabolism
Biomedical and Life Sciences
Biomedicine
Cancer Research
Carcinoma, Renal Cell - metabolism
Carcinoma, Renal Cell - pathology
Carcinoma, Renal Cell - surgery
Female
Hematology
Humans
Immunohistochemistry
Kidney Neoplasms - metabolism
Kidney Neoplasms - pathology
Kidney Neoplasms - surgery
Male
Middle Aged
Nephrectomy - methods
Oncology
Receptors, G-Protein-Coupled - metabolism
Receptors, Kisspeptin-1
Research Paper
Surgical Oncology
title Value of metastin receptor immunohistochemistry in predicting metastasis after radical nephrectomy for pT1 clear cell renal cell carcinoma
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