Effect of donor tumor necrosis factor-alpha and interleukin-10 genotypes on delayed graft function and acute rejection in kidney transplantation.

Introduction: This study evaluated the influence of interleukin-10 (IL10) gene -1082G>A and tumor necrosis factor-alpha (TNF) gene -308G>A polymorphisms in the donor and recipients on the acute rejection (AR) episodes and delayed graft function (DGF) in kidney transplant recipients.

Materials And Methods: The IL10 -1082G>A and TNF -308G>A polymorphisms were determined in 100 kidney allograft recipients and their donors using the polymerase chain reaction-amplification refractory mutation system polymerase chain reaction-restriction fragment length polymorphism methods. Transplantation outcomes were determined in terms of AR and DGF criteria.

Results: The A allele of the TNF polymorphism (high producer) in the donors was associated with DGF in the recipients (odd ratio, 3.1; 95% confidence interval, 1.2 to 8.1). There was also a significant association between the combination of donor's IL10-TNF genotypes and DGF (odd ratio, 4.8; 95% confidence interval, 1.4 to 17.1); the frequency of a combination of IL10 AA or GA and TNF AA or GA was higher in the recipients with DGF. No association was found between the donors and recipients' IL10 -1082G>A and TNF -308G>A polymorphisms and AR. No association was detected between recipients and donors' IL10 polymorphisms or recipients' TNF polymorphisms and DGF.

Conclusions: This study showed that donors with high TNF production may have increased risk of DGF in their recipients. Routine screening of these gene polymorphisms may have a clinical role in identifying patients at risk of DGF.