Association of the rs7903146 single nucleotide polymorphism at the Transcription Factor 7-like 2 (TCF7L2) locus with type 2 diabetes in Brazilian subjects

  • Barra G
  • Dutra L
  • Watanabe S
  • et al.
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Abstract

OBJECTIVE:To investigate the association of the T allele of the single nucleotide polymorphism (SNP) rs7903146 of TCF7L2 with the occurrence of T2D in a sample of subjects followed up at the Brasilia University Hospital. SUBJECTS AND METHODS: The SNP rs7903146 of TCF7L2 was genotyped by allele-specific PCR in 113 patients with known T2D and in 139 non-diabetic controls in Brasilia, Brazil. RESULTS:We found that the T allele of the SNP rs7903146 of TCF7L2 was significantly associated with T2D risk (odds ratio of 3.92 for genotype TT in the recessive genetic model, p = 0.004 and 1.5 for T allele, p = 0.032). CONCLUSION:These results reinforce previous findings on the consistent association of this genetic factor and the risk of T2D in populations of diverse ethnic backgrounds. Arq Bras Endocrinol Metab. 2012;56(8):479-84OBJETIVO: Investigar a associação do alelo T do polimorfismo de nucleotídeo único (SNP) rs7903146 do TCF7L2 com a ocorrência de DM2 em uma amostra de indivíduos acompanhados no Hospital Universitário de Brasília. SUJEITOS E MÉTODOS: O SNP 7903146 do TCF7L2 foi genotipado por PCR alelo-específica em 113 pacientes portadores de DM2 e em 139 controles não diabéticos em Brasília, Brasil. RESULTADOS: Foi observada associação significativa do alelo T do SNP rs7903146 do TCF7L2 com a ocorrência de DM2 (razão de chances de 3,92 para o genótipo TT utilizando o modelo genético recessivo, p = 0,003; e de 1,5 para o alelo T, p = 0,032). CONCLUSÃO: Esse resultado reforça os achados prévios de associação consistente desse fator genético com o risco de diabetes em populações de origens étnicas diversas. Arq Bras Endocrinol Metab. 2012;56(8):479-84

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Barra, G. B., Dutra, L. A. S., Watanabe, S. C., Costa, P. G. G., Cruz, P. S. M. da, Azevedo, M. F., & Amato, A. A. (2012). Association of the rs7903146 single nucleotide polymorphism at the Transcription Factor 7-like 2 (TCF7L2) locus with type 2 diabetes in Brazilian subjects. Arquivos Brasileiros de Endocrinologia & Metabologia, 56(8), 479–484. https://doi.org/10.1590/s0004-27302012000800003

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