Association of Arg194Trp and Arg399Gln Polymorphisms of XRCC1 Gene and Risk of Differentiated Thyroid Carcinoma in Iranian-Azeri Patients
2017
Background: The thyroid cancer (TC) is one of endocrine malignancies which contributes to more than 50% of all deaths from endocrine cancers. Gene polymorphisms including DNA repair genes such as XRCC1 (X-ray repair cross-complementing group 1) gene are thought to modify DNA repair capacity and relate to cancer risk. Objectives: The aim of the study was to detect the association between XRCC1 polymorphisms and increased risk of thyroid carcinoma among Iranian-Azeri patients. Methods: This case-control study was performed on 114 differentiated thyroid carcinoma patients and 91 normal control subjects. Single nucleotide polymorphisms (SNPs) of 194 C > T and 399 G > A of XRCC1 gene were genotyped by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Results: In the present study, polymorphism at codon 194 of the XRCC1 gene was not found in case and control groups (P = NC (not calculated). All of the case and control subjects were 194C/C. Unlike 399 G > A genotype (P A genotype could be used as a useful molecular biomarker to predict genetic susceptibility for differentiated thyroid carcinoma in Iranian-Azeri patients.
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