title: Lack of influence of DNA repair gene OGG1 codon 326 polymorphisms of gastric cancer risk in the Kashmir valley.
abstract: Damage to DNA may lead to carcinogenesis but is repaired through activation of pathways involving polymorphic enzymes, including human 8-oxoguanine glycosylase 1 (OGG1). The present study aimed to assess the role of genetic variants of DNA repair gene OGG1 Ser326Cys in susceptibility to gastric cancer in Kashmir valley. A case control study was performed in 303 subjects (108 gastric cancer and 195 healthy controls), all genotyped through the polymerase chain reaction (PCR). Data were statistically analyzed using the chi-square test and the logistic regression model. The distribution of OGG1 genotypes among controls and gastric cancer cases did not show any significant differences. Although smokers and high salted tea drinkers themselves were at higher risk for gastric cancer (OR=8.975, P=0.0001; OR=14.778, P=0.0001), interaction with OGG1 Ser326Cys did not further modulate the risk. In conclusion, our findings suggest that the OGG1 polymorphism does not influence either gastric cancer risk independently or by interaction with smoking or salted-tea consumption in the Kashmir valley.
authors.affiliation: Department of Genetics, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India.
authors.forename: M A
authors.initials: MA
authors.lastname: Malik
authors.forename: S A
authors.initials: SA
authors.lastname: Zargar
authors.forename: Balraj
authors.initials: B
authors.lastname: Mittal
mesh_terms: D000230:Adenocarcinoma / Q000235:genetics* / Q000473:pathology; D002294:Carcinoma, Squamous Cell / Q000235:genetics* / Q000473:pathology; D016022:Case-Control Studies; D003062:Codon / Q000235:genetics*; D045647:DNA Glycosylases / Q000235:genetics*; D004260:DNA Repair; D005260:Female; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D007194:India; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D011379:Prognosis; D012307:Risk Factors; D013274:Stomach Neoplasms / Q000235:genetics* / Q000473:pathology
chemical_list: D003062:Codon; D045647:DNA Glycosylases; C479058:oxoguanine glycosylase 1, human