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학술저널
저자정보
오하림 (고려대학교 병리학교실) 이유진 (고려대학교 안암병원 병리과) 강성구 (고려대학교) 안보경 (고려대학교 안암병원 병리과) 김의진 (고려대학교) 채양석 (고려대학교) 이영석 (고려대학교) 이정현 (고려대학교) 김철환 (고려대학교)
저널정보
대한비뇨기과학회 Investigative and Clinical Urology Investigative and Clinical Urology Vol.61 No.2
발행연도
2020.1
수록면
166 - 172 (7page)

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Purpose: As prostate cancer (PCa) is the second most commonly diagnosed cancer worldwide, finding novel markers for prognosis is crucial. BRCA1-associated protein 1 (BAP-1), a nuclear-localized deubiquitinating enzyme, has been reported in several human cancers. However, its prognostic role in PCa remains unknown. Herein, we assessed the prognostic and clinicopathologic significance of BAP-1 in PCa. Materials and Methods: Seventy surgical specimens from radical prostatectomy cases were examined. Two cores per case were selected for construction of tissue microarrays (TMAs). After the exclusion of two cases because of tissue sparsity, BAP-1 immunohistochemical expression was evaluated in 68 cases of formalin-fixed, paraffin-embedded TMA tissue blocks. The immunohistochemical stain was scored according to proportion of nuclear staining: negative (<10% of tumor cells) or positive (≥10% of tumor cells). Results: BAP-1 expression was negative in 30 cases (44.1%) and positive in 38 cases (55.9%). Positive BAP-1 expression was more common in pT3b disease than in pT2 (p=0.038). A high preoperative prostate-specific antigen level was correlated with BAP-1 expression (p=0.014). Age, lymphovascular invasion, perineural invasion, and grade group were not significantly correlated with BAP-1 expression. Patients with positive BAP-1 expression showed significantly shorter disease-free survival (p=0.013). Additionally, BAP-1 was an independent prognostic factor of PCa (p=0.035; hazard ratio, 9.277; 95% confidence interval, 1.165–73.892). Conclusions: Our study findings showed an association of BAP-1 expression with poor PCa prognosis and suggest a potential role for BAP-1 as a prognostic biomarker for PCa.

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