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J Nephrol. 2013 Nov-Dec;26(6):1170-8. doi: 10.5301/jn.5000252. Epub 2013 Mar 6.

Role of human leukocyte antigen-G 14-base pair polymorphism in kidney transplantation outcomes.

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  • 1Regional Government Reference Center for Organ, Tissue and Cell Transplantation, R. Binaghi Hospital - ASL 8, Cagliari - Italy.



Both the membrane-bound and soluble forms of human leukocyte antigen-G (HLA-G) molecules exhibit a multitude of immunomodulatory properties that can potentially obviate or delay graft rejection. The 14-base pair (14-bp) polymorphism in the 3'-untranslated region of the HLA-G gene is thought to have a role in soluble HLA-G (sHLA-G) expression.


In this study, we retrospectively investigated a large cohort of 418 kidney transplant recipients with the aim of establishing whether the HLA-G 14-bp insertion/deletion polymorphism could serve as an effective genetic risk marker for acute and/or chronic deterioration of transplanted kidney function.


A statistically significant higher incidence of chronic kidney dysfunction leading to allograft loss was observed in transplant recipients homozygous for the HLA-G 14-bp deletion polymorphism. This difference increased over time and was confirmed by progressive decline in the glomerular filtration rate.


These results suggest that alongside other factors previously consolidated in clinical practice, recipient HLA-G 14-bp genotype may serve as an adjuvant independent predictor of long-term outcome of kidney transplantation.

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