Abstract
Purpose
X-ray repair cross complementing group 1 (XRCC1) is one of the major DNA repair proteins involved in the bas-excision repair pathway. Several single-nucleotide polymorphisms in the XRCC1 gene are identified and related with increased cancer risk development. In particular, the -77T>C polymorphism located on the promoter region relates with lung cancer risk development. The aim of this study is to analyze the -77T>C allelic frequencies in a population composed of 456 primary gastric cancer patients (GC) and 507 blood donor controls.
Methods
GC patients were observed at the University of Siena, Italy; clinicopathological data and family history were available for the cancer group. The control group is composed of blood donors. Constitutional genomic DNA was PCR amplified, and XRCC1 -77T>C was detected using restriction enzyme BsrB I and analyzed in a 3% agarose gel.
Results
The -77C>C homozygous genotype was significantly associated with increased risk of gastric cardia carcinoma (p = 0.023) with an odds ratio of 1.65 (95% confidence interval 1.14 to 2.4). In the family history stratification, we report a significant association (p = 0.043) between the -77T>C polymorphism and GC cases with familial lung cancer aggregation.
Conclusions
Our results suggest that the XRCC1 -77T>C polymorphism is a relevant host susceptibility factor for gastric cardia cancer development and specific subsets of familial clustering of GC.
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Acknowledgments
This work was supported by Istituto Toscano Tumori (“Gene expression profile and therapeutic implication in gastric cancer. From the clinical overview to the translational research”; Grant ITT-2007) and by Fundação para a Ciência e a Tecnologia (“Exploring the role of E-Cadherin-HER interaction in the search of molecular biomarkers for the clinical management of gastric cancer patients”; grant ref PIC/IC/82923/2007 and PhD grant ref SFRH/BD/40090/2007).
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The author(s) declare that they have no competing interests.
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Corso, G., Marrelli, D., Pedrazzani, C. et al. Gastric Cardia Carcinoma is Associated with the Promoter -77T>C Gene Polymorphism of X-Ray Cross-Complementing Group 1 (XRCC1) . J Gastrointest Surg 13, 2233–2238 (2009). https://doi.org/10.1007/s11605-009-0980-x
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DOI: https://doi.org/10.1007/s11605-009-0980-x