Zahra Eslami Samarin, Mohammad Tahmaseb, Abbas Ghaderi,
Volume 2, Issue 3 (12-2015)
Abstract
Breast cancer is the most common cancer worldwide and is the second leading cause of death in women after lung cancer. Micro RNAs (miRNAs) are among endogenous factors which are involved in many types of cancers, including breast cancer. Single nucleotide polymorphism (SNP) in the miRNAs, might change their biological activities such as their effects on oncogenes and tumor suppressor genes. Therefore some of miRNA’s SNPs are associated with the risk of different types of cancer, including breast cancer. The aim of this study was to evaluate the correlation between SNP rs11614913 in mir196a2 and the risk of breast cancer. SNP rs11614913 in hsa-miR-196a2 analyzed in 100 breast cancer cases and 100 controls in women living in southern Iran. Polymorphism was identified by the PCR-RFLP method. The PCR product was digested with TaaI restriction enzyme which produced two bands with the length of 187bp and 196bp. The data from this case –control study were analyzed using odds ratios (ORs) with 95% confidence intervals (CIs) to reveal the associations of SNPs in miRNAs with breast cancer susceptibility. The C allele frequencies in patients and controls for miR-196a2 were 0.74 and 0.75, respectively. The genotype frequencies of TT, TC, and CC were 0.05, 0.42, and 0.53 for the patients and 0.06, 0.38, and 0.56 for the controls, respectively. Statistical analysis showed that the genetic frequencies for this SNP were in Hardy-Weinberg equilibrium (p>0.05). The results of this study indicated no significant association between SNP rs11614913 in mir196a2 and the risk of breast cancer.
Esmat Khaleqsefat, Mohammad Khalaj-Kondori, Morteza Jabbarpour Bonyadi, Hamid Soraya, Behnam Askari,
Volume 5, Issue 3 (12-2018)
Abstract
Warfarin is a commonly-prescribed anticoagulant used to treat and prevent thromboembolic events. The requirement for varying doses of warfarin depends on genetic and environmental components. In this study, the frequency of two single-nucleotide polymorphic variants of the vitamin K epoxide reductase complex subunit 1 (VKORC1) gene (1173 C>T (rs9934438) and 3730 G>A (rs7294)) and its correlation with warfarin maintenance doses were investigated in patients with heart valve replacement from West Azarbayejan, Iran. Blood samples were obtained from 185 patients; their genomic DNA was extracted and samples were genotyped by polymerase chain reaction–restriction fragment length polymorphism (PCR-RFLP) assay. To assess if the blood warfarin level is different among genotypes, we used a one-way analysis of variance (ANOVA) followed by a Tukey’s post-hoc comparison. The minor allele frequency was determined to be 54% for 1173T and 53.7% for 3730A. Patients who carried the G allele at position 3730 and T allele at position 1173 required a significantly lower daily mean warfarin dosage (P <0.001). Consideration of the VKORC1 gene polymorphism, especially at the initial stages of the therapy, can be helpful in pre-treatment dosing of warfarin, which, in turn, reduces the adverse effects resulting from inappropriate drug prescription.
Mrs Rana Sadat Abbasabad, Mrs Sara Ghaffarian,
Volume 11, Issue 4 (2-2025)
Abstract
ERCC5 gene, is a key components of NER pathway and encodes a key endonuclease. In this study, we analyzed the association between rs2296147 T>C polymorphism of ERCC5 gene with the risk of breast cancer in a case-control study with statistical population consisting of 100 patients and 100 healthy controls by Tetra-ARMS PCR. Statistical analysis was performed using javastat online statistics package and SPSS V.26. The frequency of CC, CT, and TT genotypes in the case group, were 11.46%, 58.33%, and 30.21%, respectively and they were 22%, 44%, and 34% for the control group. Statistical analysis showed a significant association between CC (p-value=0.049) (OR=0.459, CI 95%=0.209-1.007) and CT genotype (p-value=0.045) (OR=1.782, CI 95%=1.012-3.139) with breast cancer risk. Also, C and T alleles frequency in the case group, were 40.62 % and 59.37% and those in the control group were 44 % and 56 % respectively. There was not any significant association between T (p-value=0.499) and C (p-value=0.499) alleles frequency and breast cancer risk in Northwestern Iran. Also, there was no significant association between this SNP frequency and patient’s pathological traits. In conclusion, our study indicated that ERCC5 rs2094258 polymorphism may contribute to the risk of breast cancer in northwestern of Iran.
