ASSOCIATION BETWEEN MURINE DOUBLE MINUTE 2 - T309G polymorphism and recurrence of hepatocellular carcinoma after surgical treatment
Background - Discovery and incorporation of biomarker panels to cancer studies enabled the understanding of genetic variation and its interference in carcinogenesis at molecular level. The potential association between single nucleotide polymorphism (SNP) 309 and increased development of tumors, suc...
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Published in | Arquivos de gastroenterologia Vol. 52; no. 4; pp. 325 - 330 |
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Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia e Outras Especialidades - IBEPEGE
01.12.2015
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Abstract | Background - Discovery and incorporation of biomarker panels to cancer studies enabled the understanding of genetic variation and its interference in carcinogenesis at molecular level. The potential association between single nucleotide polymorphism (SNP) 309 and increased development of tumors, such as hepatocellular carcinoma, has been subject to several studies. This is the first study on this association conducted in Brazil. Methods - 62 cases of cirrhotic patients with hepatocellular carcinoma surgically treated by partial hepatectomy (HPT) or by liver transplantation (LTX) from 2000 to 2009 at Santa Casa Hospital Complex, in the city of Porto Alegre, were retrospectively analyzed. Tumor samples from surgical specimen were collected and prepared for study in paraffin blocks. Results - Overall survival was 26.7 months in the HPT group and 62.4 months in the LTX group (P <0.01). Overall tumor recurrence was 66.7% in the HPT group (10/15) and 17% in the LTX group (8/47) (X²=13.602, P <0.01). Alpha-fetoprotein levels >200ng/mL, microvascular invasion and histological grade were associated with tumor recurrence (P <0.01). Recurrence rates in each surgical group and analysis of factors associated with tumor recurrence, when stratified for each genotypic pattern, were both not statistically significant. Conclusion - G/G genotype was not associated with tumor recurrence after surgical treatment and it did not show any correlation with other prognostic factors.
Contexto - A descoberta e incorporação de painéis de biomarcadores aos estudos do câncer permitiram o conhecimento de variações genéticas e sua interferência no processo de carcinogênese. A possibilidade de associação do polimorfismo de nucleotídeo simples T309G do gene MDM2 com o aumento da formação de tumores, dentre eles o hepatocarcinoma, tem sido alvo de diversos estudos. Objetivo - Analisar a influência do polimorfismo T309G do gene MDM2 na recidiva tumoral de pacientes cirróticos com hepatocarcinoma submetidos a tratamento cirúrgico. Métodos - Foram analisados retrospectivamente pacientes cirróticos com carcinoma hepatocelular submetidos a tratamento cirúrgico (hepatectomia parcial ou transplante hepático) no período de 2000 a 2009, na Santa Casa Hospital Complex in Porto Alegre, South Brazil. Foram coletadas amostras de fragmentos tumorais da peça operatória (fígado explantado ou segmento hepático), as quais foram preparadas para estudo em bloco parafinado. Resultados - A sobrevida global foi de 26,7 meses para o grupo hepatectomias e 62,4 meses para o grupo transplante hepático (P <0,01), havendo 66,7% de recidiva global no grupo hepatectomias (10/15), e 17% no grupo transplante hepático (8/47) (X²=13,602, P <0.01). Níveis de AFP>200ng/mL correlacionaram-se com a recidiva tumoral em ambos os subgrupos cirúrgicos. Observou-se que 83,3% dos pacientes com recidiva também apresentaram invasão microvascular ao exame anátomo-patológico (P <0,01). Não houve significância estatística quando a recidiva neoplásica foi avaliada para os diferentes genótipos e analisada para cada subgrupo cirúrgico. A análise dos fatores prognósticos relacionados à recidiva do hepatocarcinoma, quando estratificada para cada padrão genotípico, também não se mostrou significante. Conclusão - O nosso estudo revelou que o genótipo G/G não esteve associado à recidiva tumoral após o tratamento cirúrgico, seja nas hepatectomias parciais ou transplante hepático. Além disso, a presença desse genótipo não mostrou correlação com os fatores prognósticos estudados. |
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AbstractList | Discovery and incorporation of biomarker panels to cancer studies enabled the understanding of genetic variation and its interference in carcinogenesis at molecular level. The potential association between single nucleotide polymorphism (SNP) 309 and increased development of tumors, such as hepatocellular carcinoma, has been subject to several studies. This is the first study on this association conducted in Brazil.BACKGROUNDDiscovery and incorporation of biomarker panels to cancer studies enabled the understanding of genetic variation and its interference in carcinogenesis at molecular level. The potential association between single nucleotide polymorphism (SNP) 309 and increased development of tumors, such as hepatocellular carcinoma, has been subject to several studies. This is the first study on this association conducted in Brazil.62 cases of cirrhotic patients with hepatocellular carcinoma surgically treated by partial hepatectomy (HPT) or by liver transplantation (LTX) from 2000 to 2009 at Santa Casa Hospital Complex, in the city of Porto Alegre, were retrospectively analyzed. Tumor samples from surgical specimen were collected and prepared for study in paraffin blocks.METHODS62 cases of cirrhotic patients with hepatocellular carcinoma surgically treated by partial hepatectomy (HPT) or by liver transplantation (LTX) from 2000 to 2009 at Santa Casa Hospital Complex, in the city of Porto Alegre, were retrospectively analyzed. Tumor samples from surgical specimen were collected and prepared for study in paraffin blocks.Overall survival was 26.7 months in the HPT group and 62.4 months in the LTX group (P <0.01). Overall tumor recurrence was 66.7% in the HPT group (10/15) and 17% in the LTX group (8/47) (X²=13.602, P <0.01). Alpha-fetoprotein levels >200ng/mL, microvascular invasion and histological grade were associated with tumor recurrence (P <0.01). Recurrence rates in each surgical group and analysis of factors associated with tumor recurrence, when stratified for each genotypic pattern, were both not statistically significant.RESULTSOverall survival was 26.7 months in the HPT group and 62.4 months in the LTX group (P <0.01). Overall tumor recurrence was 66.7% in the HPT group (10/15) and 17% in the LTX group (8/47) (X²=13.602, P <0.01). Alpha-fetoprotein levels >200ng/mL, microvascular invasion and histological grade were associated with tumor recurrence (P <0.01). Recurrence rates in each surgical group and analysis of factors associated with tumor recurrence, when stratified for each genotypic pattern, were both not statistically significant.G/G genotype was not associated with tumor recurrence after surgical treatment and it did not show any correlation with other prognostic factors.CONCLUSIONG/G genotype was not associated with tumor recurrence after surgical treatment and it did not show any correlation with other prognostic factors. Background - Discovery and incorporation of biomarker panels to cancer studies enabled the understanding of genetic variation and its interference in carcinogenesis at molecular level. The potential association between single nucleotide polymorphism (SNP) 309 and increased development of tumors, such as hepatocellular carcinoma, has been subject to several studies. This is the first study on this association conducted in Brazil. Methods - 62 cases of cirrhotic patients with hepatocellular carcinoma surgically treated by partial hepatectomy (HPT) or by liver transplantation (LTX) from 2000 to 2009 at Santa Casa Hospital Complex, in the city of Porto Alegre, were retrospectively analyzed. Tumor samples from surgical specimen were collected and prepared for study in paraffin blocks. Results - Overall survival was 26.7 months in the HPT group and 62.4 months in the LTX group (P <0.01). Overall tumor recurrence was 66.7% in the HPT group (10/15) and 17% in the LTX group (8/47) (X²=13.602, P <0.01). Alpha-fetoprotein levels >200ng/mL, microvascular invasion and histological grade were associated with tumor recurrence (P <0.01). Recurrence rates in each surgical group and analysis of factors associated with tumor recurrence, when stratified for each genotypic pattern, were both not statistically significant. Conclusion - G/G genotype was not associated with tumor recurrence after surgical treatment and it did not show any correlation with other prognostic factors. Discovery and incorporation of biomarker panels to cancer studies enabled the understanding of genetic variation and its interference in carcinogenesis at molecular level. The potential association between single nucleotide polymorphism (SNP) 309 and increased development of tumors, such as hepatocellular carcinoma, has been subject to several studies. This is the first study on this association conducted in Brazil. 62 cases of cirrhotic patients with hepatocellular carcinoma surgically treated by partial hepatectomy (HPT) or by liver transplantation (LTX) from 2000 to 2009 at Santa Casa Hospital Complex, in the city of Porto Alegre, were retrospectively analyzed. Tumor samples from surgical specimen were collected and prepared for study in paraffin blocks. Overall survival was 26.7 months in the HPT group and 62.4 months in the LTX group (P <0.01). Overall tumor recurrence was 66.7% in the HPT group (10/15) and 17% in the LTX group (8/47) (X²=13.602, P <0.01). Alpha-fetoprotein levels >200ng/mL, microvascular invasion and histological grade were associated with tumor recurrence (P <0.01). Recurrence rates in each surgical group and analysis of factors associated with tumor recurrence, when stratified for each genotypic pattern, were both not statistically significant. G/G genotype was not associated with tumor recurrence after surgical treatment and it did not show any correlation with other prognostic factors. Background - Discovery and incorporation of biomarker panels to cancer studies enabled the understanding of genetic variation and its interference in carcinogenesis at molecular level. The potential association between single nucleotide polymorphism (SNP) 309 and increased development of tumors, such as hepatocellular carcinoma, has been subject to several studies. This is the first study on this association conducted in Brazil. Methods - 62 cases of cirrhotic patients with hepatocellular carcinoma surgically treated by partial hepatectomy (HPT) or by liver transplantation (LTX) from 2000 to 2009 at Santa Casa Hospital Complex, in the city of Porto Alegre, were retrospectively analyzed. Tumor samples from surgical specimen were collected and prepared for study in paraffin blocks. Results - Overall survival was 26.7 months in the HPT group and 62.4 months in the LTX group (P <0.01). Overall tumor recurrence was 66.7% in the HPT group (10/15) and 17% in the LTX group (8/47) (X²=13.602, P <0.01). Alpha-fetoprotein levels >200ng/mL, microvascular invasion and histological grade were associated with tumor recurrence (P <0.01). Recurrence rates in each surgical group and analysis of factors associated with tumor recurrence, when stratified for each genotypic pattern, were both not statistically significant. Conclusion - G/G genotype was not associated with tumor recurrence after surgical treatment and it did not show any correlation with other prognostic factors. Contexto - A descoberta e incorporação de painéis de biomarcadores aos estudos do câncer permitiram o conhecimento de variações genéticas e sua interferência no processo de carcinogênese. A possibilidade de associação do polimorfismo de nucleotídeo simples T309G do gene MDM2 com o aumento da formação de tumores, dentre eles o hepatocarcinoma, tem sido alvo de diversos estudos. Objetivo - Analisar a influência do polimorfismo T309G do gene MDM2 na recidiva tumoral de pacientes cirróticos com hepatocarcinoma submetidos a tratamento cirúrgico. Métodos - Foram analisados retrospectivamente pacientes cirróticos com carcinoma hepatocelular submetidos a tratamento cirúrgico (hepatectomia parcial ou transplante hepático) no período de 2000 a 2009, na Santa Casa Hospital Complex in Porto Alegre, South Brazil. Foram coletadas amostras de fragmentos tumorais da peça operatória (fígado explantado ou segmento hepático), as quais foram preparadas para estudo em bloco parafinado. Resultados - A sobrevida global foi de 26,7 meses para o grupo hepatectomias e 62,4 meses para o grupo transplante hepático (P <0,01), havendo 66,7% de recidiva global no grupo hepatectomias (10/15), e 17% no grupo transplante hepático (8/47) (X²=13,602, P <0.01). Níveis de AFP>200ng/mL correlacionaram-se com a recidiva tumoral em ambos os subgrupos cirúrgicos. Observou-se que 83,3% dos pacientes com recidiva também apresentaram invasão microvascular ao exame anátomo-patológico (P <0,01). Não houve significância estatística quando a recidiva neoplásica foi avaliada para os diferentes genótipos e analisada para cada subgrupo cirúrgico. A análise dos fatores prognósticos relacionados à recidiva do hepatocarcinoma, quando estratificada para cada padrão genotípico, também não se mostrou significante. Conclusão - O nosso estudo revelou que o genótipo G/G não esteve associado à recidiva tumoral após o tratamento cirúrgico, seja nas hepatectomias parciais ou transplante hepático. Além disso, a presença desse genótipo não mostrou correlação com os fatores prognósticos estudados. |
Author | TEIXEIRA, Uirá Fernandes IZAGUIRRE, Andréa Gomes Coelho MACHRY, Mayara Christ BRANDÃO, Ajácio Bandeira de Mello FONTES, Paulo Roberto Ott CERSKI, Carlos Thadeu |
AuthorAffiliation | Universidade Federal do Rio Grande do Sul Universidade Federal de Ciências da Saúde de Porto Alegre |
AuthorAffiliation_xml | – name: Universidade Federal do Rio Grande do Sul – name: Universidade Federal de Ciências da Saúde de Porto Alegre |
Author_xml | – sequence: 1 givenname: Uirá Fernandes surname: TEIXEIRA fullname: TEIXEIRA, Uirá Fernandes organization: Universidade Federal de Ciências da Saúde de Porto Alegre, Brasil – sequence: 2 givenname: Andréa Gomes Coelho surname: IZAGUIRRE fullname: IZAGUIRRE, Andréa Gomes Coelho organization: Universidade Federal de Ciências da Saúde de Porto Alegre, Brasil – sequence: 3 givenname: Mayara Christ surname: MACHRY fullname: MACHRY, Mayara Christ organization: Universidade Federal de Ciências da Saúde de Porto Alegre, Brasil – sequence: 4 givenname: Carlos Thadeu surname: CERSKI fullname: CERSKI, Carlos Thadeu organization: Universidade Federal do Rio Grande do Sul, Brasil – sequence: 5 givenname: Ajácio Bandeira de Mello surname: BRANDÃO fullname: BRANDÃO, Ajácio Bandeira de Mello organization: Universidade Federal de Ciências da Saúde de Porto Alegre, Brasil – sequence: 6 givenname: Paulo Roberto Ott surname: FONTES fullname: FONTES, Paulo Roberto Ott organization: Universidade Federal de Ciências da Saúde de Porto Alegre, Brasil |
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Cites_doi | 10.1007/BF01535205 10.1093/carcin/bgn090 10.1245/s10434-012-2739-y 10.1067/msy.2000.105498 10.1016/j.cdp.2009.01.003 10.1007/s00432-010-0970-0 10.1038/387299a0 10.1016/j.ejso.2004.01.013 10.1016/j.canep.2010.04.008 10.1186/1750-9378-6-13 10.1007/s13238-012-2067-9 10.3322/caac.20107 10.1001/archsurg.140.5.450 10.1136/jmg.2005.031260 10.1016/j.cell.2004.11.022 10.1007/s13277-014-2432-9 10.1093/carcin/21.3.517 10.3748/wjg.v20.i41.15007 10.1158/1078-0432.CCR-06-0111 10.1158/1055-9965.EPI-07-0634 10.3904/kjim.2013.28.4.428 10.3748/wjg.15.5592 10.1097/00000658-199903000-00004 10.1093/carcin/bgp246 |
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Keywords | Proto-oncogene proteins C-MDM2 Biological tumor markers Carcinoma hepatocelular Single-stranded conformational polymorphism Hepatocellular carcinoma Marcadores biológicos de tumor Proteínas proto-oncogênicas C-MDM2 Polimorfismo conformacional de fita simples |
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SubjectTerms | Aged Aged, 80 and over Carcinoma hepatocelular Carcinoma, Hepatocellular - genetics Carcinoma, Hepatocellular - mortality Carcinoma, Hepatocellular - surgery Disease-Free Survival Female GASTROENTEROLOGY & HEPATOLOGY Genetic Predisposition to Disease Genotype Hepatectomy Humans Liver Neoplasms - genetics Liver Neoplasms - mortality Liver Neoplasms - surgery Male Marcadores biológicos de tumor Middle Aged Neoplasm Recurrence, Local Polimorfismo conformacional de fita simples Polymorphism, Single Nucleotide Proteínas proto-oncogênicas C-MDM2 Proto-Oncogene Proteins c-mdm2 - genetics Retrospective Studies Risk Factors Treatment Outcome |
Title | ASSOCIATION BETWEEN MURINE DOUBLE MINUTE 2 - T309G polymorphism and recurrence of hepatocellular carcinoma after surgical treatment |
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