Journal
EUROPEAN UROLOGY
Volume 54, Issue 5, Pages 1097-1108Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.eururo.2007.11.034
Keywords
ADAM9; Immunohistochemistry; qRT-PCR; Prognostic marker; Prostate cancer
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Objectives: A disintegrin and metalloprotease (ADAM) 9 has been implicated in tumour progression of prostate cancer. We evaluated the expression of ADAM9 on protein and messenger RNA (mRNA) level in a larger cohort of prostate cancer cases following prostatectomy and correlated the findings with clinicopathological parameters including prostate-specific antigen (PSA) relapse times. Methods: We immunostained 198 clinicopathologically characterised prostate cancer cases for ADAM9. For 25 additional cases, ADAM9 mRNA of microdissected tumour and normal tissue was analysed via quantitative reverse transcriptase-polymerase chain reaction. Results: ADAM9 was significantly upregulated in prostate cancer compared with normal tissue on mRNA and protein level. ADAM9 protein expression was significantly associated with shortened PSA relapse-free survival in univariate and multivariate analyses, particularly in patients who had received prior androgen ablation. Conclusions: ADAM9 is overexpressed in prostate cancer cases and is an independent prognostic marker of PSA relapse-free survival following radical prostatectomy. Further studies are needed to verify its role as a predictive marker of response to androgen ablation. (C) 2007 European Association of Urology. Published by Elsevier B.V. All rights reserved.
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