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

被引:31
作者
Lajin, Bassam [1 ]
Sakur, Amir Alhaj [1 ]
Ghabreau, Lina [2 ]
Alachkar, Amal [3 ]
机构
[1] Univ Aleppo, Dept Analyt Chem, Fac Pharm, Aleppo, Syria
[2] Univ Aleppo, Dept Pathol, Fac Med, Aleppo, Syria
[3] Univ Aleppo, Dept Pharmacol, Fac Pharm, Aleppo, Syria
关键词
Polymorphism; Folate-homocysteine; C677T; A1298C; A66G; MTHFR; MTRR; METHYLENETETRAHYDROFOLATE REDUCTASE GENE; METHIONINE SYNTHASE REDUCTASE; DIETARY-FOLATE INTAKE; COMMON MUTATION; MTHFR POLYMORPHISMS; DNA METHYLATION; PLASMA FOLATE; SUSCEPTIBILITY; HOMOCYSTEINE; CARCINOMA;
D O I
10.1007/s13277-012-0354-y
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
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.
引用
收藏
页码:1133 / 1139
页数:7
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