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Published on: October 11, 2018
Polymorphism in cytokine genes as prognostic markers in Hodgkin's lymphoma
S Hohaus1, M Giachelia, A Di Febo
1Istituto di Ematologia e di Anatomia Patologica, Universita' Cattolica S. Cuore, Rome, Italy. stefan.hohaus@rm.unicatt.it
Background:
In Hodgkin's lymphoma (HL), the production of cytokines by Reed-Sternberg cells and the surrounding tissue is thought to contribute to the biology of the disease. Cytokine expression can be altered by common single nucleotide polymorphisms (SNPs) in the 5'-promoter regions.
Patients And Methods:
We studied polymorphic allele variants of the cytokine genes interleukin (IL)-10 (T-3575A, G-2849A, C-2763A, A-1082G and C-592A), IL-6 (G-174C) and tumor necrosis factor-alpha (C-863A and G-308A) in 184 patients with HL, and analyzed for associations with treatment outcome.
Results:
Carriers of the IL-10-592AA and the IL-6-174GG genotypes had a significantly lower probability of freedom from treatment failure (FFTF) with adjusted hazard ratios (HRs) for failure of 2.92 [95% CI (confidence interval) 1.58-5.41, P = 0.001] and of 1.75 (95% CI 1.04-2.92, P = 0.03), respectively. Reconstructing haplotypes from the five SNPs in the IL-10 promoter revealed that homozygous carriers of the IL-10.4 haplotype (T-G-C-A-A) had a worse FFTF (HR, 2.35; 95% CI 1.2-4.6, P = 0.01). In the Cox multivariate analysis, the IL-10-592AA, the IL-6-174GG genotypes and stage were independent prognostic factors.
Conclusions:
Our study indicates that cytokine genotypes predict clinical outcome in patients with HL and points to the importance of the genetic background of the host for treatment response.
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