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Association of polymorphisms in one-carbon metabolizing genes with breast cancer risk in Syrian women

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Tumor Biology

Abstract

Dietary folate status as well as polymorphisms in one-carbon metabolism genes may affect the risk of breast cancer through aberrant DNA methylation and altered nucleotide synthesis and DNA repair. A large number of studies investigated the role of methylenetetrahydrofolate reductase (MTHFR) and methionine synthase reductase (MTRR) polymorphisms in breast cancer with inconsistent results. Association between multiple polymorphisms in one-carbon metabolism genes and breast cancer was not studied before in an Arab population. The purpose of the present study is to test the hypothesis that polymorphisms in one-carbon metabolism genes are associated with breast cancer susceptibility in Syrian breast cancer women patients. A total of 245 subjects (119 breast cancer women patients and 126 healthy controls) were genotyped for MTHFR C677T and A1298C and MTRR A66G polymorphisms. Association was tested for under numerous genetic models. A statistically significant association was found for MTHFR A1298C polymorphism especially under the allele contrast model (odds ratio (OR) = 1.68, 95% confidence interval (CI) (1.16–2.45), P = 0.006). On the other hand, no significant association was found for MTHFR C677T or MTRR A66G under any of the genetic models tested. The effects of the compound genotypes were also examined. The 66GG genotype was found to be protective against breast cancer when combined with the 677CT or 1298AC genotype (OR = 0.18, 95% CI (0.04–0.82), P = 0.014; OR = 0.3, 95% CI (0.08–1.11), P = 0.058). In conclusion, our study supports the hypothesis that polymorphisms in one-carbon gene metabolisms modulate the risk for breast cancer, particularly the A1298C polymorphism of the MTHFR gene.

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Authors and Affiliations

  1. Department of Analytical Chemistry, Faculty of Pharmacy, University of Aleppo, Aleppo, Syria

    Bassam Lajin & Amir Alhaj Sakur

  2. Department of Pathology, Faculty of Medicine, University of Aleppo, Aleppo, Syria

    Lina Ghabreau

  3. Department of Pharmacology, Faculty of Pharmacy, University of Aleppo, Aleppo, Syria

    Amal Alachkar

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  1. Bassam Lajin
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  2. Amir Alhaj Sakur
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  3. Lina Ghabreau
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  4. Amal Alachkar
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Correspondence to Bassam Lajin.

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Lajin, B., Alhaj Sakur, A., Ghabreau, L. et al. Association of polymorphisms in one-carbon metabolizing genes with breast cancer risk in Syrian women. Tumor Biol. 33, 1133–1139 (2012). https://doi.org/10.1007/s13277-012-0354-y

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