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Meta-analysis on the association of nucleotide excision repair gene XPD A751C variant and cancer susceptibility among Indian population
Authors:Raju Kumar Mandal  Suraj Singh Yadav  Aditya K Panda
Institution:1. Department of Urology and Renal Transplantation, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Raibareli Road, Luknow, India
2. Department of Pharmacology, King George Medical University, Lucknow, India
3. Department of Infectious Disease Biology, Institute of Life Sciences, Bhubaneswar, India
Abstract:Polymorphism A751C (A>C) in XPD gene has shown susceptibility to many cancers in Indian population; however the results of these studies are inconclusive. Thus, we performed this meta-analysis to estimate the association between XPD A751C polymorphism and overall cancer susceptibility. We quantitavely synthesized all published studies of the association between XPD A751C polymorphism and cancer risk. Pooled odds ratios (ORs) and 95 % CI were estimated for allele contrast, homozygous, heterozygous, dominant and recessive genetic model. A total of thirteen studies including 3,599 controls and 3,087 cancer cases were identified and analyzed. Overall significant results were observed for C allele carrier (C vs. A: p = 0.001; OR 1.372, 95 % CI 1.172–1.605) variant homozygous (CC vs. AA: p = 0.001; OR 1.691, 95 % CI 1.280–2.233) and heterozygous (AC vs. AA: p = 0.001; OR 1.453, 95 % CI 1.215–1.737) genotypes. Similarly dominant (CC+AC vs. AA: p = 0.001; OR 1.512, 95 % CI 1.244–1.839) and recessive (CC vs. AA+AC: p = 0.001; OR 1.429, 95 % CI 1.151–1.774) genetic models also demonstrated risk of developing cancer. This meta-analysis suggested that XPD A751C polymorphism likely contribute to cancer susceptibility in Indian population. Further studies about gene–gene and gene–environment interactions are required.
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