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자료유형
학술저널
저자정보
이철 (서울대학교) 문경철 (서울대학교) 김보현 (서울대학교(연건캠퍼스)) 송보람 (서울대학교병원)
저널정보
대한병리학회 Journal of Pathology and Translational Medicine Journal of Pathology and Translational Medicine 제51권 제4호
발행연도
2017.7
수록면
359 - 364 (6page)
DOI
https://doi.org/10.4132/jptm.2017.03.16

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Background: Clear cell renal cell carcinoma (CCRCC) is presumed to be associated with adipogenic differentiation. Histone modification is known to be important for adipogenesis, and the function of histone demethylase plant homeodomain finger 2 (PHF2) has been noted. In addition, PHF2 may act as a tumor suppressor via epigenetic regulation of p53 and is reported to be reduced in colon cancer and stomach cancer tissues. In this study, we examined PHF2 expression in CCRCC specimens by immunohistochemistry. Methods: We studied 254 CCRCCs and 56 non-neoplastic renal tissues from patients who underwent radical or partial nephrectomy between 2000 and 2003 at the Seoul National University Hospital. Tissue microarray blocks were prepared, and immunohistochemical staining for PHF2 was performed. Results: Among 254 CCRCC cases, 150 cases (59.1%) showed high expression and 104 cases (40.1%) showed low expression. High expression of PHF2 was significantly correlated with a low Fuhrman nuclear grade (p < .001), smaller tumor size (p < .001), low overall stage (p = .003), longer cancer-specific survival (p = .002), and progression-free survival (p < .001) of the patients. However, it was not an independent prognostic factor in multivariate analysis adjusted for Fuhrman nuclear grade and overall stage. Conclusions: Our study showed that low expression of PHF2 is associated with aggressiveness and poor prognosis of CCRCC.

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