PMID- 31249568 OWN - NLM STAT- MEDLINE DCOM- 20201020 LR - 20201020 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 10 DP - 2019 TI - FCGR3A and FCGR2A Genotypes Differentially Impact Allograft Rejection and Patients' Survival After Lung Transplant. PG - 1208 LID - 10.3389/fimmu.2019.01208 [doi] LID - 1208 AB - Fc gamma receptors (FcgammaRs) play a major role in the regulation of humoral immune responses. Single-nucleotide polymorphisms (SNPs) of FCGR2A and FCGR3A can impact the expression level, IgG affinity and function of the CD32 and CD16 FcgammaRs in response to their engagement by the Fc fragment of IgG. The CD16 isoform encoded by FCGR3A [158V/V] controls the intensity of antibody-dependent cytotoxic alloimmune responses of natural killer cells (NK) and has been identified as a susceptibility marker predisposing patients to cardiac allograft vasculopathy after heart transplant. This study aimed to investigate whether FCGR2A and FCGR3A polymorphisms can also be associated with the clinical outcome of lung transplant recipients (LTRs). The SNPs of FCGR2A ([131R/H], rs1801274) and FCGR3A ([158V/F], rs396991) were identified in 158 LTRs and 184 Controls (CTL). The corresponding distribution of genotypic and allelic combinations was analyzed for potential links with the development of circulating donor-specific anti-HLA alloantibodies (DSA) detected at months 1 and 3 after lung transplant (LTx), the occurrence of acute rejection (AR) and chronic lung allograft dysfunction (CLAD), and the overall survival of LTRs. The FCGR3A [158V/V] genotype was identified as an independent susceptibility factor associated with higher rates of AR during the first trimester after LTx (HR 4.8, p < 0.0001, 95% CI 2.37-9.61), but it could not be associated with the level of CD16- mediated NK cell activation in response to the LTR's DSA, whatever the MFI intensity and C1q binding profiles of the DSA evaluated. The FCGR2A [131R/R] genotype was associated with lower CLAD-free survival of LTRs, independently of the presence of DSA at 3 months (HR 1.8, p = 0.024, 95% CI 1.08-3.03). Our data indicate that FCGR SNPs differentially affect the clinical outcome of LTRs and may be of use to stratify patients at higher risk of experiencing graft rejection. Furthermore, these data suggest that in the LTx setting, specific mechanisms of humoral alloreactivity, which cannot be solely explained by the complement and CD16-mediated pathogenic effects of DSA, may be involved in the development of acute and chronic lung allograft rejection. FAU - Paul, Pascale AU - Paul P AD - Department of Hematology, Hopital de la Conception, INSERM CIC-1409, Assistance Publique-Hopitaux Marseille (AP-HM), Marseille, France. AD - INSERM 1263, INRA, C2VN, Aix-Marseille Universite (AMU), INSERM, Marseille, France. FAU - Pedini, Pascal AU - Pedini P AD - Etablissement Francais du Sang PACA-Corse 13005, Marseille, France. FAU - Lyonnet, Luc AU - Lyonnet L AD - Department of Hematology, Hopital de la Conception, INSERM CIC-1409, Assistance Publique-Hopitaux Marseille (AP-HM), Marseille, France. FAU - Di Cristofaro, Julie AU - Di Cristofaro J AD - "Biologie des Groupes Sanguins", UMR 7268 ADES Aix-Marseille Universite/EFS/CNRS, Marseille, France. FAU - Loundou, Anderson AU - Loundou A AD - Departement de sante Publique - EA 3279, Assistance Publique-Hopitaux Marseille (AP-HM), Aix-Marseille Universite, Marseille, France. FAU - Pelardy, Mathieu AU - Pelardy M AD - Etablissement Francais du Sang PACA-Corse 13005, Marseille, France. FAU - Basire, Agnes AU - Basire A AD - Etablissement Francais du Sang PACA-Corse 13005, Marseille, France. FAU - Dignat-George, Francoise AU - Dignat-George F AD - Department of Hematology, Hopital de la Conception, INSERM CIC-1409, Assistance Publique-Hopitaux Marseille (AP-HM), Marseille, France. AD - INSERM 1263, INRA, C2VN, Aix-Marseille Universite (AMU), INSERM, Marseille, France. FAU - Chiaroni, Jacques AU - Chiaroni J AD - Etablissement Francais du Sang PACA-Corse 13005, Marseille, France. AD - "Biologie des Groupes Sanguins", UMR 7268 ADES Aix-Marseille Universite/EFS/CNRS, Marseille, France. FAU - Thomas, Pascal AU - Thomas P AD - Service de Chirurgie Thoracique et Transplantation Pulmonaire, CHU Nord Assistance Publique-Hopitaux Marseille (AP-HM), Aix-Marseille Universite, Marseille, France. FAU - Reynaud-Gaubert, Martine AU - Reynaud-Gaubert M AD - Service de Pneumologie et Transplantation Pulmonaire, CHU Nord Assistance Publique-Hopitaux Marseille (AP-HM) - IHU Mediterranee Infection Aix-Marseille-Universite, Marseille, France. FAU - Picard, Christophe AU - Picard C AD - Etablissement Francais du Sang PACA-Corse 13005, Marseille, France. AD - "Biologie des Groupes Sanguins", UMR 7268 ADES Aix-Marseille Universite/EFS/CNRS, Marseille, France. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190612 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (Biomarkers) RN - 0 (FCGR2A protein, human) RN - 0 (FCGR3A protein, human) RN - 0 (HLA Antigens) RN - 0 (Isoantibodies) RN - 0 (Receptors, IgG) SB - IM MH - Acute Disease MH - Adult MH - Biomarkers/metabolism MH - Chronic Disease MH - Cytotoxicity, Immunologic MH - Female MH - Gene Frequency MH - *Genotype MH - Graft Rejection/*genetics/immunology/mortality MH - HLA Antigens/immunology MH - Humans MH - Isoantibodies/metabolism MH - Killer Cells, Natural/*immunology MH - Lung Transplantation MH - Male MH - Middle Aged MH - Polymorphism, Single Nucleotide MH - Receptors, IgG/*genetics MH - Survival Analysis PMC - PMC6582937 OTO - NOTNLM OT - Fc-gamma receptors OT - HLA antibodies OT - allograft rejection OT - chronic lung allograft dysfunction OT - lung transplantation OT - natural killer cells EDAT- 2019/06/30 06:00 MHDA- 2020/10/21 06:00 PMCR- 2019/01/01 CRDT- 2019/06/29 06:00 PHST- 2019/02/19 00:00 [received] PHST- 2019/05/13 00:00 [accepted] PHST- 2019/06/29 06:00 [entrez] PHST- 2019/06/30 06:00 [pubmed] PHST- 2020/10/21 06:00 [medline] PHST- 2019/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2019.01208 [doi] PST - epublish SO - Front Immunol. 2019 Jun 12;10:1208. doi: 10.3389/fimmu.2019.01208. eCollection 2019.