title: The polymorphisms of interleukin-10 gene influence the prognosis of patients with advanced melanoma.
abstract: The interleukin-10 gene (IL-10) is polymorphic. The genotypes result in inter-individual differences in IL-10 production, which may play a role in the pathophysiology and the clinical course of melanoma and other cancers. We analyzed the frequency of the ATA haplotype formed by the alleles at -1082 (G/A), -819 (C/T), and -592 (C/A) at the promoter region of the IL-10 gene in patients with melanoma (n = 108) and healthy subjects (n = 393). We also studied the long-term prognostic significance of the ATA haplotype carriage. There were significantly more ATA carriers in melanoma patients compared with control subjects (44 vs. 33%, respectively, P = 0.03). In the patients who presented with localized disease, the haplotype carriage was not significantly associated with recurrence rate, disease-free survival, or overall survival. In the patients who presented with or developed advanced disease (n = 36), the ATA haplotype carriage [HR 0.47, 95% confidence interval (CI) 0.22-1.01, P = 0.05] was found statistically significant when adjusted by metastatic sites (HR 4.63, 95% CI 1.88-11.44, P = 0.0009) in multivariate analysis for survival. ATA haplotype carriage appears to increase the susceptibility to melanoma. This is not a significant prognostic factor in localized melanoma, but in advanced disease, it implies longer survival.
authors.affiliation: Department of Oncology, Tampere University Hospital, P.O.B. 2000, 33521 Tampere, Finland. meri-sisko.vuoristo@fimnet.fi
authors.forename: Meri-Sisko
authors.initials: MS
authors.lastname: Vuoristo
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D018572:Disease-Free Survival; D005260:Female; D020022:Genetic Predisposition to Disease; D006239:Haplotypes; D006801:Humans; D016753:Interleukin-10 / Q000235:genetics*; D008297:Male; D008545:Melanoma / Q000235:genetics*; D008875:Middle Aged; D011110:Polymorphism, Genetic; D011379:Prognosis; D011401:Promoter Regions, Genetic; D012878:Skin Neoplasms / Q000235:genetics*; D016019:Survival Analysis
chemical_list: D016753:Interleukin-10