Optimal use of a panel of methylation markers with GSTP1 hypermethylation in the diagnosis of prostate adenocarcinoma

Yutaka Tokumaru, Susan V. Harden, Dong Il Sun, Keishi Yamashita, Jonathan I. Epsiein, David Sidransky

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80 Citations (Scopus)

Abstract

Purpose: In this study, we tested the ability of a panel of hypermethylation markers to improve the sensitivity of histologic prostate cancer detection in sextant needle biopsies. Experimental Design: We obtained fresh-frozen sextant biopsies from 72 excised prostates and directly compared blinded histologic review and quantitative real-time methylation-specific PCR for hypermethylation of four genes, Tazarotene-induced gene 1 (TIG1), adenomatous polyposis coli (APC), retinoic acid receptor β2 (RARβ2), and glutathione S-transferase π (GSTP1) to detect the presence of prostate cancer. Results were compared with the final surgical pathological review of the resected prostates as the gold standard. Results: Histologic review alone detected carcinoma with a sensitivity of 64% (39 of 61 cases) and 100% specificity. Quantitative real-time methylation-specific PCR for TIG1, APC, RARβ2, and GSTP1 detected carcinoma with a sensitivity of 70%, 79%, 89%, and 75%, respectively, with 100% specificity for all of the genes. Using this panel of methylation markers in combination with histology resulted in the detection of 59 of 61 (97%) cases of prostate with 100% specificity, a 33% improvement over histology alone. Conclusion: The use of a panel of methylation markers as an adjunct to histologic review may substantially augment prostate cancer diagnosis from needle biopsies.

Original languageEnglish
Pages (from-to)5518-5522
Number of pages5
JournalClinical Cancer Research
Volume10
Issue number16
DOIs
Publication statusPublished - 15 Aug 2004
Externally publishedYes

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