MTHFRrs2274976 polymorphism is a risk marker for nonsyndromic cleft lip with or without cleft palate in the Brazilian population

Autor: Sibele Nascimento de Aquino, Mário Sérgio Oliveira Swerts, Ryuichi Hoshi, Hercílio Martelli-Júnior, Ricardo D. Coletta, Elizabete Bagordakis, Maria Giulia Rezende Pucciarelli, Ana Lúcia Carrinho Ayrosa Rangel, Helenara Salvati Bertolossi Moreira, Sergio Roberto Peres Line, Sílvia Regina de Almeida Reis, Maria Rita Passos-Bueno, Andréa do Rego Borges, Edgard Graner, Andreia Bufalino, Ana Camila Messetti, Luciano Abreu Brito
Rok vydání: 2013
Předmět:
Zdroj: Birth Defects Research Part A: Clinical and Molecular Teratology. 100:30-35
ISSN: 1542-0752
DOI: 10.1002/bdra.23199
Popis: Background Polymorphisms within the MTHFR (rs2274976) and MTHFD1 (rs2236225) genes were previously associated with maternal susceptibility for having an offspring with nonsyndromic cleft lip with or without cleft palate (NSCL/P) in the Brazilian population. However, as the genotypes of the patients with NSCL/P were not evaluated, it is not clear whether the effects are associated with maternal or offspring genotypes. The aim of this study was to evaluate the association of rs2274976 and rs2236225 in the pathogenesis of NSCL/P. Methods By using the TaqMan 5′-exonuclease allelic discrimination assay, the present study genotyped the rs2274976 and rs2236225 polymorphisms in 147 case–parent trios, 181 isolated samples of NSCL/P and 478 healthy controls of the Brazilian population. Transmission disequilibrium test and structured case–control analysis based on the individual ancestry proportions were performed. Results The transmission disequilibrium test showed a significant overtransmission of the rs2274976 A allele (p = 0.004), but no preferential parent-of-origin transmission was detected. The structured case–control analysis supported those findings, revealing that the minor A allele of rs2274976 was significantly more frequent in NSCL/P group compared with control group (p = 0.001), yielding an odds ratio of 3.46 (95% confidence interval, 2.05–5.85). No association of rs2236225 polymorphism with NSCL/P was observed in both transmission disequilibrium test and case–control analysis. Conclusion The results of the study revealed that the presence of the rs2274976 A allele is a risk marker for the development of NSCL/P in the Brazilian population. Birth Defects Research (Part A) 100:30–35, 2014. © 2013 Wiley Periodicals, Inc.
Databáze: OpenAIRE
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