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Association Analysis of Rs1695 and Rs1138272 Variations in Gstp1 Gene and Breast Cancer Susceptibility Publisher Pubmed



Farmohammadi A1 ; Arabyarmohammadi V2 ; Ramzanpour R2
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Authors Affiliations
  1. 1. Student Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran

Source: Asian Pacific Journal of Cancer Prevention Published:2020


Abstract

Background: The glutathione S transferases P1 (GSTP1) is one of the common type of the GSTs family. This gene has several genetic polymorphisms that the rs1695 and rs1138272 are the most common variations in this gene. This study aimed to examine the association of these genetic variations with breast cancer risk which was followed by bioinformatics analysis. Materials and Methods: In a case-control study, 200 participants including 100 women with breast cancer and 100 healthy women were enrolled. After blood sample collection and DNA extraction, the total genomic DNA was extracted from this sample. The SNPeffects online software was employed to evaluate the effects of rs1695 genetic variation on the GSTP1 protein structure. Results: Our data revealed that there is a significant association between rs1695 genetic variation and the risk of breast cancer in homozygote (OR= 3.1532, 95%CI= 1.1072 to 8.9798, p= 0.0315) and allelic (OR= 1.6098, 95%CI= 1.0577 to 2.4500, p= 0.0263) genetic comparisons. This despite the fact that the rs1138272 polymorphism was not associated with breast cancer risk. Our bioinformatics analysis based on WALTZ output showed that the rs1695 polymorphism reduces the amyloid propensity of the GSTP1 enzyme (dWALTZ=-228.00). Conclusions: Based on our findings, the rs1695 genetic variation is a genetic risk factor for breast cancer and it could be considered as a biomarker for screening of susceptible women. © 2020, Asian Pacific Organization for Cancer Prevention.
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