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 inArquivos de gastroenterologia Vol. 52; no. 4; pp. 325 - 330
Main Authors TEIXEIRA, Uirá Fernandes, IZAGUIRRE, Andréa Gomes Coelho, MACHRY, Mayara Christ, CERSKI, Carlos Thadeu, BRANDÃO, Ajácio Bandeira de Mello, FONTES, Paulo Roberto Ott
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Published Brazil Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia e Outras Especialidades - IBEPEGE 01.12.2015
Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia (IBEPEGE)
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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.
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
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  surname: MACHRY
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Issue 4
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
Language English
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Snippet Background - Discovery and incorporation of biomarker panels to cancer studies enabled the understanding of genetic variation and its interference in...
Discovery and incorporation of biomarker panels to cancer studies enabled the understanding of genetic variation and its interference in carcinogenesis at...
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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
URI https://www.ncbi.nlm.nih.gov/pubmed/26840476
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https://doaj.org/article/d09e20bdfba84deaaa7af180d9c0c45c
Volume 52
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