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Σάββατο 17 Μαρτίου 2018

ASSOCIATION OF INTERLEUKIN-10 -1082 A/G (RS1800896) POLYMORPHISM WITH SUSCEPTIBILITY TO GASTRIC CANCER: META-ANALYSIS OF 6,101 CASES AND 8,557 CONTROLS

ABSTRACT BACKGROUND: The promoter -1082 A/G (rs1800896) polymorphism of Interleukin-10 (IL-10) gene have been widely reported and considered to have a significant role on gastric cancer risk, but the results are inconsistent. OBJECTIVE: To clarify the association, we conducted a meta-analysis to investigate the associations IL-10 -1082 A/G polymorphism with gastric cancer. METHODS: Eligible articles were identified by searching databases including PubMed, Web of Science, and Google Scholar up to August 03, 2017. Odds ratios (OR) with corresponding 95% confidence intervals (CIs) were used to assess the association. RESULTS: A total of 30 case-control studies with 6,101 cases and 8,557 controls were included in this meta-analysis. Overall, a significant association between IL-10 -1082 A/G polymorphism and gastric cancer risk was observed under the allele model (G vs A: OR=1.305, 95% CI=1.076-1.584; P=0.007), heterozygote model and (GA vs AA: OR=1.252, 95% CI=1.252-1.054; P=0.011) and dominant model (GG+GA vs AA: OR=1.264, 95% CI=1.053-1.516; P=0.012). In the subgroup analysis by ethnicity, increased gastric cancer risk were found in Asians under the allele model (G vs A: OR=1.520, 95% CI=1.172-1.973; P=0.002), homozygote model (GG+GA vs AA: OR=1.571, 95% CI=1.023-2.414; P= 0.039), heterozygote model (GA vs AA: OR=1.465, 95% CI=1.192-1.801; P≤0.001) and dominant model (GG+GA vs AA: OR=1.448, 95% CI=1.152-1.821; P=0.002), but not among Caucasian and Latinos populations. CONCLUSION: These results suggested that the IL-10 -1082 A/G (rs1800896) polymorphism might contribute to the gastric cancer susceptibility, especially among Asians.


RESUMO CONTEXTO: O promotor-1082 A/polimorfismo G (rs1800896) do gene da interleucina-10 (IL-10) é amplamente relatado e considerado por ter um papel significativo no risco de câncer gástrico, porém os resultados são inconsistentes. OBJETIVO: Para esclarecer melhor esta associação, realizou-se uma meta-análise para investigar as associações de IL-10-1082 A/polimorfismo G com câncer gástrico. MÉTODOS: Artigos elegíveis foram identificados através de pesquisa de bases de dados PubMed, Web of Science e Google Scholar até 3 de agosto de 2017. Razões de possibilidades (OR) com intervalo de confiança de 95% correspondente (CIs) foram usados para avaliar a associação. RESULTADOS: Um total de 30 estudos de caso-controle, 6.101 casos e com 8.557 controles foram incluídos nesta meta-análise. Em geral, uma associação significativa entre IL-10-1082 A/G polimorfismo e risco de câncer gástrico foi observada sob o modelo de alelo (G vs A: OR=1.305, 95% CI=1.076-1.584; P=0.007), no modelo heterozigoto (GA vs AA: OR=1.252, 95% CI=1.252-1.054; P=0.011) e modelo dominante (GG+GA vs AA: OR=1.264, 95% CI=1.053-1.516; P=0.012). Na análise de subgrupo pela etnia, foi encontrado risco aumentado de câncer gástrico em asiáticos sob o modelo de alelo (G vs A: OR=1.520, 95% CI=1.172-1.973; P=0.002), modelo heterozigoto (GG+GA vs AA: OR=1.571, 95% CI=1.023-2.414; P= 0.039), e modelo dominante (GG+GA vs AA: OR=1.448, 95% CI=1.152-1.821; P=0.002), mas não entre a população caucasiana e latina. CONCLUSÃO: Estes resultados sugeriram que a IL-10-1082 A/polimorfismo G (rs1800896) pode contribuir para a suscetibilidade de câncer gástrico, especialmente entre os asiáticos.

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