Functional Fc Gamma Receptor Gene Polymorphisms and Long-Term Kidney Allograft Survival
- PMID: 34497614
- PMCID: PMC8420807
- DOI: 10.3389/fimmu.2021.724331
Functional Fc Gamma Receptor Gene Polymorphisms and Long-Term Kidney Allograft Survival
Abstract
The functional Fc gamma receptor (FcγR) IIIA polymorphism FCGR3A-V/F158 was earlier suggested to determine the potential of donor-specific HLA antibodies to trigger microcirculation inflammation, a key lesion of antibody-mediated renal allograft rejection. Associations with long-term transplant outcomes, however, have not been evaluated to date. To clarify the impact of FCGR3A-V/F158 polymorphism on kidney transplant survival, we genotyped a cohort of 1,940 recipient/donor pairs. Analyzing 10-year death-censored allograft survival, we found no significant differences in relation to FCGR3A-V/F158. There was also no independent survival effect in a multivariable Cox model. Similarly, functional polymorphisms in two other activating FcγR, FCGR2A-H/R131 (FcγRIIA) and FCGR3B-NA1/NA2 (FcγRIIIB), were not associated with outcome. There were also no significant survival differences among patient subgroups at increased risk of rejection-related injury, such as pre-sensitized recipients (> 0% panel reactivity; n = 438) or recipients treated for rejection within the first year after transplantation (n = 229). Our study results suggest that the earlier shown association of FcγR polymorphism with microcirculation inflammation may not be strong enough to exert a meaningful effect on graft survival.
Keywords: Fc gamma receptor; allograft survival; anti-HLA antibodies; antibody-mediated rejection; kidney transplantation.
Copyright © 2021 Wahrmann, Döhler, Arnold, Scherer, Mayer, Haindl, Haslacher, Böhmig and Süsal.
Conflict of interest statement
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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