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The Study of DNA Methyltransferase-3B Promoter Variant Genotype among Iranian Sporadic Breast Cancer Patients | ||
Iranian Journal of Medical Sciences | ||
مقاله 5، دوره 39، شماره 3، مرداد 2014، صفحه 268-274 اصل مقاله (432.8 K) | ||
نوع مقاله: Original Article(s) | ||
نویسندگان | ||
Ebrahim Eftekhar* 1؛ Mozhgan Rasti2؛ Fakhraddin Nahgibalhossaini2؛ Yasaman Sadeghi3 | ||
1Deparment of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran;and Student Research Committee, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran; and Department of Biochemistry, School of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran | ||
2Deparment of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran | ||
3Student Research Committee, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran | ||
چکیده | ||
Background: DNA methyltransferase-3B (DNMT3B) is an important enzyme responsible for maintaining the DNA methylation pattern in eukaryotic cells. In this study we have investigated the correlation between the 46359C→T polymorphism in the DNMT3B gene and the risk of breast cancer incidence among sporadic breast cancer patients in Fars Province, Southern Iran.Methods: In this case-control study, 100 breast cancer patients and 138 healthy control subjects were genotyped for the DNMT3B gene by the polymerase chain reaction-restriction fragment length polymorphism method.Results: The genotype frequency in the case (CC 27%, CT 47%, TT 26%) group significantly (P=0.008) differed from the control (CC 19.56%, CT 67.3%, TT 13%) group. We observed a decreased association between the CT genotype and lymph node involvement in breast cancer patients. Our results have shown that in comparison to the homozygous CC genotype carriers the DNMT3B-CT genotype has a significantly lower risk for breast cancer (OR=0.515, 95% CI=0.267-0.994, P=0.048).Conclusion: Our case-control study showed that the CT genotype was significantly associated with decreased breast cancer risk. Consistent with these results, a significant decrease of CT genotype among lymph node positive breast cancer patients was observed. However, a larger study population with more clinical data is needed to confirm these results. | ||
کلیدواژهها | ||
DNAmethyltransferase-3B؛ Polymorphism؛ Breast cance | ||
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