title: Impact of interleukin-10 gene polymorphisms on survival in patients with colorectal cancer.
abstract: Chronic inflammation is thought to be the leading cause of colorectal cancer, and interleukin-10 (IL10) has been identified as a potent immunomodulatory cytokine that regulates inflammatory responses in the gastrointestinal tract. Although several single nucleotide polymorphisms (SNPs) in IL10 have been associated with the risk of colorectal cancer, their prognostic significance has not been determined. Two hundred and eighty-two colorectal cancer patients were genotyped for two candidate cancer-associated SNPs in IL10. The associations of these SNPs with distant metastasis-free survival and overall survival were evaluated by Kaplan-Meier analysis and Cox regression model. The minor homozygote GG genotype of IL10 rs3021094 was significantly associated with a 3.30-fold higher risk of death compared with the TT+TG genotypes (P=0.011). The patients with IL10 rs3021094 GG genotype also had a poorer overall survival in Kaplan-Meier analysis (log-rank P=0.007) and in multivariate Cox regression model (P=0.044) adjusting for age, gender, carcinoembryonic antigen levels, tumor differentiation, stage, lymphovascular invasion, and perineural invasion. In conclusion, our results suggest that IL10 rs3021094 might be a valuable prognostic biomarker for colorectal cancer patients.
authors.affiliation: Department of Colorectal Surgery, China Medical University Hospital, Taichung, Taiwan.
authors.forename: Wen-Chien
authors.initials: WC
authors.lastname: Ting
authors.forename: Lu-Min
authors.initials: LM
authors.lastname: Chen
authors.forename: Li-Chia
authors.initials: LC
authors.lastname: Huang
authors.forename: Mann-Jen
authors.initials: MJ
authors.lastname: Hour
authors.forename: Yu-Hsuan
authors.initials: YH
authors.lastname: Lan
authors.forename: Hong-Zin
authors.initials: HZ
authors.lastname: Lee
authors.forename: Bang-Jau
authors.initials: BJ
authors.lastname: You
authors.forename: Ta-Yuan
authors.initials: TY
authors.lastname: Chang
authors.forename: Bo-Ying
authors.initials: BY
authors.lastname: Bao
mesh_terms: D000368:Aged; D000483:Alleles; D014408:Biomarkers, Tumor / Q000235:genetics; D002272:Carcinoembryonic Antigen / Q000097:blood; D002454:Cell Differentiation; D015179:Colorectal Neoplasms / Q000235:genetics* / Q000401:mortality / Q000473:pathology; D005260:Female; D005838:Genotype; D006720:Homozygote; D006801:Humans; D016753:Interleukin-10 / Q000235:genetics*; D053208:Kaplan-Meier Estimate; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D020641:Polymorphism, Single Nucleotide; D012044:Regression Analysis
chemical_list: D014408:Biomarkers, Tumor; D002272:Carcinoembryonic Antigen; D016753:Interleukin-10
keywords: Colorectal Neoplasms; Inflammation; Interleukin-10; Polymorphism; Survival