title: Potential influence of interleukin-1 haplotype IL-1 beta-511*T-IL-1RN*1 in conferring low risk to middle third location of esophageal cancer: a case-control study.
abstract: Interleukin (IL)-1 gene polymorphisms affect several inflammatory diseases, including cancer. Therefore, we studied genetic association of biallelic (-511C>T) polymorphism of IL-1 beta and 86-bp VNTR polymorphism of IL-1RN in 159 patients with esophageal cancer (EC) and 194 age- and gender-matched healthy controls. Genetic analysis for IL-1 polymorphisms was performed by polymerase chain reaction-restriction fragment length polymorphism. The frequencies of IL-1 beta (-511C>T) and IL-1RN (variable number tandem repeat) genotypes, alleles, and haplotypes did not differ significantly between patients and controls. However, IL-1 beta -511TT genotype and T1+ haplotype combination illustrated low risk for disease at the middle third location of the tumor (odds ratio [OR] = 0.27; 95% confidence interval [CI] = 0.11-0.62; p = 0.002; OR = 0.462; 95% CI = 0.253-0.845, p = 0.01). In conclusion, subjects with IL-1 beta -511TT genotype or IL-1 beta*T-IL-1RN*1 (T1) haplotype had lower risk for middle third tumor location of EC in a northern Indian population.
authors.affiliation: Department of Genetics, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Raibareilly Road, Lucknow 226014, India.
authors.forename: Rohit
authors.initials: R
authors.lastname: Upadhyay
authors.forename: Meenu
authors.initials: M
authors.lastname: Jain
authors.forename: Shaleen
authors.initials: S
authors.lastname: Kumar
authors.forename: Uday C
authors.initials: UC
authors.lastname: Ghoshal
authors.forename: Balraj
authors.initials: B
authors.lastname: Mittal
mesh_terms: D000230:Adenocarcinoma / Q000235:genetics*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000483:Alleles; D002294:Carcinoma, Squamous Cell / Q000235:genetics*; D016022:Case-Control Studies; D004938:Esophageal Neoplasms / Q000235:genetics*; D005260:Female; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006239:Haplotypes / Q000235:genetics*; D006801:Humans; D007194:India; D053590:Interleukin 1 Receptor Antagonist Protein / Q000235:genetics*; D053583:Interleukin-1beta / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D018598:Minisatellite Repeats / Q000235:genetics; D016017:Odds Ratio; D010641:Phenotype; D011110:Polymorphism, Genetic / Q000276:immunology
chemical_list: C507763:IL1RN protein, human; D053590:Interleukin 1 Receptor Antagonist Protein; D053583:Interleukin-1beta