Abstract
Aim
Carcinoma of gallbladder (GBC) is a relatively rare but highly fatal disease. The DNA (cytosine-5-)-methyltransferase 3 beta (DNMT3B) −579 G>T promoter polymorphism (rs1569686) influences gene function and has been associated with various malignancies. Present population-based case-control study was undertaken to examine the potential association of DNMT3B −579 G>T variation with GBC in North Indian population.
Methods
Genotypes and allelic frequencies of the DNMT3B −579 G>T polymorphism were determined for 212 GBC patients and 219 controls using PCR-RFLP. Odds ratio (OR) and 95% confidence interval (95% CI) were calculated for the association of DNMT3B polymorphism with GBC. Analysis of potential transcription factor binding sites was also identified in the region harboring the polymorphism.
Results
The DNMT3B −579 G>T polymorphism was found to be non-significantly associated with an overall increased risk of GBC (OR = 1.10 and 1.56 for T/G and G/G genotypes, respectively, P trend = 0.227). The increased risk was predominant in both male and female cohorts and also non-significantly in GBC patients with gallstone status (OR = 1.44; P = 0.280, OR = 1.06; P = 0.804 and OR = 1.45; P = 0.143, respectively).
Conclusion
DNMT3B −579 G>T polymorphism may alter susceptibility to GBC although it may not play a major role in the pathoetiology of this disease in North Indian population.
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Acknowledgement
The study was supported by fellowship grants from Counsel of Scientific and Industrial Research (CSIR) and Department of Science and Technology (DST), Government of India.
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The author(s) declare that they have no competing interests.
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Srivastava, K., Srivastava, A. & Mittal, B. DNMT3B −579 G>T Promoter Polymorphism and Risk of Gallbladder Carcinoma in North Indian Population. J Gastrointest Canc 41, 248–253 (2010). https://doi.org/10.1007/s12029-010-9156-x
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DOI: https://doi.org/10.1007/s12029-010-9156-x