title: Association of interleukin-10 gene polymorphism with cachexia in Chinese patients with gastric cancer.
abstract: This study investigated whether the single nucleotide polymorphisms (SNPs) and haplotypes of interleukin-10 (IL-10) were associated with cachexia in 223 Chinese patients with gastric cancer diagnosed by histopathological examination. Genomic DNA was extracted from peripheral blood leukocytes. The SNPs at positions -1082A/G, -819T/C, and -592A/C in the IL-10 gene promoter were analyzed using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). No significant differences were found in the allele and genotype frequencies of -592A/C in patients with or without cachexia. Increased frequency of the -1082G allele was found in patients with cachexia (OR = 1.83, 95% CI, 1.00-3.33, p = 0.049). In a logistic regression analysis adjusted for body weight, carcinoma location, and stage, the -1082AG genotype was associated with an odds ratio of 1.989 (95% CI, 1.041-3.802, p = 0.037) for cachexia. The -819CC genotype was associated with an odds ratio of 3.393 (95% CI, 1.298-8.871, p = 0.013) for cachexia. Furthermore, haplotype analysis revealed that the G(1082)C(819)C(592) haplotype was associated with increased risk of cachexia as compared to the A(1082)T(819)A(592) haplotype (OR = 2.21; 95% CI, 1.14 - 4.30; p = 0.02). Our results suggest that genetic polymorphisms of IL-10 contribute to the susceptibility to cachexia in patients with gastric cancer in the Chinese population.
authors.affiliation: Department of General Surgery, Qingdao University Medical College and Hospital, Shandong Province, China.
authors.forename: Fengbo
authors.initials: F
authors.lastname: Sun
authors.forename: Yunbo
authors.initials: Y
authors.lastname: Sun
authors.forename: Dianliang
authors.initials: D
authors.lastname: Zhang
authors.forename: Jian
authors.initials: J
authors.lastname: Zhang
authors.forename: Bo
authors.initials: B
authors.lastname: Song
authors.forename: Hongmei
authors.initials: H
authors.lastname: Zheng
mesh_terms: D044466:Asian People / Q000235:genetics*; D002100:Cachexia / Q000097:blood / Q000150:complications* / Q000235:genetics; D005260:Female; D005787:Gene Frequency / Q000235:genetics; D020022:Genetic Predisposition to Disease; D006239:Haplotypes / Q000235:genetics; D006801:Humans; D016753:Interleukin-10 / Q000097:blood / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D012150:Polymorphism, Restriction Fragment Length; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D013274:Stomach Neoplasms / Q000097:blood / Q000150:complications* / Q000235:genetics*
chemical_list: D016753:Interleukin-10