Prognostic role of BAP1 in pT1 clear cell carcinoma in partial nephrectomy specimens
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BAP1 is a gene situated on chromosome 3p in a region that can be modified in renal cell carcinomas (RCCs). Mutations that cause loss of expression of BAP1 frequently occur in primary clear cell renal carcinoma (ccRCC). In a previous work, we observed that loss of nuclear BAP1 expression was crucial in ccRCC progression; in the current study, we investigated BAP1 expression in a large series of small conventional ccRCCs treated with partial nephrectomy, to assess a possible role as biomarker and the prognostic value in terms of patients’ survival at long-term follow-up. One hundred sixty-two patients with single pT1 ccRCC were selected from those who underwent surgery at our Institute of Urology between 1987 and 2000. The features considered in this study were gender, age, tumor size, grade, incidence of metastasis, and patient-specific survival; they were correlated with immunohistochemical BAP1 nuclear expression in tumoral tissue. Median follow-up was 197.24 months (range 19 to 274); median survival was 125.34 months (range 5 to 274 months). None of our pT1 ccRCCs showed total loss of nuclear BAP1 staining; we found a significant negative correlation between nuclear BAP1 expression and tumor size and between nuclear BAP1 expression and grade. In small ccRCCs, nuclear BAP1 staining was not correlated with disease-specific 5-year survival.
Our data confirm the established role of BAP1 as a tumor suppressor protein. This is the first report where BAP1 has been studied in pT1 ccRCC tumors, but nuclear BAP1 expression cannot help identify patients having high-risk disease in these patients.
KeywordsBAP1 protein Immunohistochemistry pT1 clear cell renal cell carcinoma Partial nephrectomy Cancer-specific survival
Compliance with ethical standards
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The Institutional Ethics Committees approved the protocol. Informed consent was obtained from all individual participants included in the study.
Conflict of interest
The authors declare that they have no conflict of interest.
No external funding, apart from the support of the Polytechnic University of Marche, was available for this study.
- 1.Joseph RW, Kapur P, Serie DJ, Eckel-Passow JE, Parasramka M, Ho T, Cheville JC, Frenkel E, Rakheja D, Brugarolas J, Parker A (2014) Loss of BAP1 protein expression is an independent marker of poor prognosis in patients with low-risk clear cell renal cell carcinoma. Cancer 120:1059–1067CrossRefPubMedGoogle Scholar
- 4.Hakimi AA, Ostrovnaya I, Reva B, Schultz N, Chen YB, Gonen M, Liu H, Takeda S, Voss MH, Tickoo SK, Reuter VE, Russo P, Cheng EH, Sander C, Motzer RJ, Hsieh JJ, ccRCC Cancer Genome Atlas (KIRC TCGA) Research Network investigators (2013) Adverse outcomes in clear cell renal cell carcinoma with mutations of 3p21 epigenetic regulators BAP1 and SETD2: a report by MSKCC and the KIRC TCGA research network. Clin Cancer Res 19:3259–3267CrossRefPubMedPubMedCentralGoogle Scholar
- 5.Kapur P, Peña-Llopis S, Christie A, Zhrebker L, Pavía-Jiménez A, Rathmell WK, Xie XJ, Brugarolas J (2013) Effects on survival of BAP1 and PBRM1 mutations in sporadic clear-cell renal-cell carcinoma: a retrospective analysis with independent validation. Lancet Oncol 14:159–167CrossRefPubMedPubMedCentralGoogle Scholar
- 7.Minardi D, Lucarini G, Milanese G, Di Primio R, Montironi R, Muzzonigro G (2016) Loss of nuclear BAP1 protein expression is a marker of poor prognosis in patients with clear cell renal cell carcinoma. Urol Oncol 34(338e):11–18Google Scholar
- 9.Sobin LH, Witteking CH (2002) TNM classification of malignant tumours, 6th edn. Wiley-Liss, New YorkGoogle Scholar
- 10.Varela I, Tarpey P, Raine K, Huang D, Ong CK, Stephens P, Davies H, Jones D, Lin ML, Teague J, Bignell G, Butler A, Cho J, Dalgliesh GL, Galappaththige D, Greenman C, Hardy C, Jia M, Latimer C, Lau KW, Marshall J, McLaren S, Menzies A, Mudie L, Stebbings L, Largaespada DA, Wessels LF, Richard S, Kahnoski RJ, Anema J, Tuveson DA, Perez-Mancera PA, Mustonen V, Fischer A, Adams DJ, Rust A, Chan-on W, Subimerb C, Dykema K, Furge K, Campbell PJ, Teh BT, Stratton MR, Futreal PA (2011) Exome sequencing identifies frequent mutation of the SWI/SNF complex gene PBRM1 in renal carcinoma. Nature 469:539–542CrossRefPubMedPubMedCentralGoogle Scholar
- 11.Dalgliesh GL, Furge K, Greenman C, Chen L, Bignell G, Butler A, Davies H, Edkins S, Hardy C, Latimer C, Teague J, Andrews J, Barthorpe S, Beare D, Buck G, Campbell PJ, Forbes S, Jia M, Jones D, Knott H, Kok CY, Lau KW, Leroy C, Lin ML, McBride DJ, Maddison M, Maguire S, McLay K, Menzies A, Mironenko T, Mulderrig L, Mudie L, O’Meara S, Pleasance E, Rajasingham A, Shepherd R, Smith R, Stebbings L, Stephens P, Tang G, Tarpey PS, Turrell K, Dykema KJ, Khoo SK, Petillo D, Wondergem B, Anema J, Kahnoski RJ, Teh BT, Stratton MR, Futreal PA (2010) Systematic sequencing of renal carcinoma reveals inactivation of histone modifying genes. Nature 463:360–363CrossRefPubMedPubMedCentralGoogle Scholar
- 13.Kapur P, Christie A, Raman JD, Then MT, Nuhn P, Buchner A, Bastian P, Seitz C, Shariat SF, Bensalah K, Rioux-Leclercq N, Xie XJ, Lotan Y, Margulis V, Brugarolas J (2014) BAP1 immunohistochemistry predicts outcomes in a multi-institutional cohort with clear cell renal cell carcinoma. J Urol 191:603–610CrossRefPubMedGoogle Scholar
- 14.Popova T, Hebert L, Jacquemin V, Gad S, Caux-Moncoutier V, Dubois-d'Enghien C, Richaudeau B, Renaudin X, Sellers J, Nicolas A, Sastre-Garau X, Desjardins L, Gyapay G, Raynal V, Sinilnikova OM, Andrieu N, Manié E, de Pauw A, Gesta P, Bonadona V, Maugard CM, Penet C, Avril MF, Barillot E, Cabaret O, Delattre O, Richard S, Caron O, Benfodda M, Hu HH, Soufir N, Bressac-de Paillerets B, Stoppa-Lyonnet D, Stern MH (2013) Germline BAP1 mutations predispose to renal cell carcinomas. Am J Hum Genet 92:974–978CrossRefPubMedPubMedCentralGoogle Scholar
- 15.Farley MN, Schmidt LS, Mester JL, Peña-Llopis S, Pavia-Jimenez A, Christie A, Vocke CD, Ricketts CJ, Peterson J, Middelton L, Kinch L, Grishin N, Merino MJ, Metwalli AR, Xing C, Xie XJ, Dahia PL, Eng C, Linehan WM, Brugarolas J (2013) A novel germline BAP1 mutation predisposes to familial clear cell renal cell carcinoma. Mol Cancer Res 11:1061–1071CrossRefPubMedPubMedCentralGoogle Scholar
- 16.Peña-Llopis S, Vega-Rubín-de-Celis S, Liao A, Leng N, Pavía-Jiménez A, Wang S, Yamasaki T, Zhrebker L, Sivanand S, Spence P, Kinch L, Hambuch T, Jain S, Lotan Y, Margulis V, Sagalowsky AI, Summerour PB, Kabbani W, Wong SW, Grishin N, Laurent M, Xie XJ, Haudenschild CD, Ross MT, Bentley DR, Kapur P, Brugarolas (2012) BAP1 loss defines a new class of renal cell carcinoma. Nat Genet 44:751–759CrossRefPubMedPubMedCentralGoogle Scholar
- 17.Guo G, Gui Y, Gao S, Tang A, Hu X, Huang Y, Jia W, Li Z, He M, Sun L, Song P, Sun X, Zhao X, Yang S, Liang C, Wan S, Zhou F, Chen C, Zhu J, Li X, Jian M, Zhou L, Ye R, Huang P, Chen J, Jiang T, Liu X, Wang Y, Zou J, Jiang Z, Wu R, Wu S, Fan F, Zhang Z, Liu L, Yang R, Liu X, Wu H, Yin W, Zhao X, Liu Y, Peng H, Jiang B, Feng Q, Li C, Xie J, Lu J, Kristiansen K, Li Y, Zhang X, Li S, Wang J, Yang H, Cai Z, Wang J (2011) Frequent mutations of genes encoding ubiquitin-mediated proteolysis pathway components in clear cell renal cell carcinoma. Nat Genet 44:17–19CrossRefPubMedGoogle Scholar
- 19.Gerlinger M, Rowan AJ, Horswell S, Larkin J, Endesfelder D, Gronroos E, Martinez P, Matthews N, Stewart A, Tarpey P, Varela I, Phillimore B, Begum S, McDonald NQ, Butler A, Jones D, Raine K, Latimer C, Santos CR, Nohadani M, Eklund AC, Spencer-Dene B, Clark G, Pickering L, Stamp G, Gore M, Szallasi Z, Downward J, Futreal PA, Swanton C (2012) Intratumor heterogeneity and branched evolution revealed by multiregion sequencing. N Engl J Med 366:883–892CrossRefPubMedPubMedCentralGoogle Scholar
- 23.Duns G, Hofstra RM, Sietzema JG, Hollema H, van Duivenbode I, Kuik A, Giezen C, Jan O, Bergsma JJ, Bijnen H, van der Vlies P, van den Berg E, Kok K (2012) Targeted exome sequencing in clear cell renal cell carcinoma tumors suggests aberrant chromatin regulation as a crucial step in ccRCC development. Hum Mutat :1059–1062Google Scholar
- 24.Piva F, Santoni M, Matrana MR, Satti S, Giulietti M, Occhipinti G, Massari F, Cheng L, Lopez-Beltran A, Scarpelli M, Principato G, Cascinu S, Montironi R (2015) BAP1, PBRM1 and SETD2 in clear-cell renal cell carcinoma: molecular diagnostics and possible targets for personalized therapies. Expert Rev Mol Diagn 15:1201–1210CrossRefPubMedGoogle Scholar