PMID- 30142248 OWN - NLM STAT- MEDLINE DCOM- 20190606 LR - 20211031 IS - 1527-6473 (Electronic) IS - 1527-6465 (Linking) VI - 24 IP - 8 DP - 2018 Aug TI - Class II Human Leukocyte Antigen Epitope Mismatch Predicts De Novo Donor-Specific Antibody Formation After Liver Transplantation. PG - 1101-1108 LID - 10.1002/lt.25286 [doi] AB - Formation of de novo donor-specific antibodies (dn-DSAs) has been associated with longterm immunologic complications after liver transplantation (LT). We hypothesized that human leukocyte antigen (HLA) epitope/eplet mismatch (MM) is a marker of immunogenicity and a risk factor for dn-DSA formation. Sera from 80 LT recipients were prospectively screened for dn-DSA by a Luminex single-antigen test (One Lambda, Inc., Canoga Park, CA) at 1, 2, 3, 6, 12, 18, 24, and 36 months after LT. HLA typing of the recipients and donors was performed using polymerase chain reaction (PCR)-SSP and PCR-SSOP Luminex low-resolution methods (One Lambda, Inc.). The HLAMatchmaker computer algorithm was used for identification of MM eplets at HLA-DRB1 and -DQA1/B1 loci. Luminex single-antigen bead solid phase assay was used for antibody analysis. Standard immunosuppression included thymoglobulin-rituximab induction and tacrolimus maintenance. There were 27 (34%) patients who developed dn-DSA. There were no episodes of antibody-mediated rejection, and 9 (11%) developed acute cellular rejection (ACR). A positive crossmatch status and a higher number of HLA-A, -B, -DR, and -ABDR MMs were not associated with dn-DSA formation. Patients developing dn-DSA had a significantly higher number of total (38 +/- 2.7 versus 28 +/- 2.3; P = 0.01) and antibody-verified (AbVer; 14 +/- 1.1 versus 10 +/- 1; P = 0.015) class II MM eplets. By a multivariate regression analysis, the number of class II MM eplets was strongly associated with risk of class II dn-DSA formation (odds ratio [OR], 1.2; P < 0.01). Patients with ACR had a significantly higher number of total (20.2 +/- 1.3 versus 13.9 +/- 0.9; P < 0.01) as well as AbVer (10.7 +/- 1.1 versus 7.5 +/- 0.6; P = 0.03) class I MM eplets. In conclusion, donor-recipient HLA epitope MM is associated with a risk of dn-DSA formation and rejection after LT. However, further studies are required to evaluate the clinical utility of epitope matching in LT. CI - (c) 2018 The Authors. Liver Transplantation published by Wiley Periodicals, Inc. on behalf of American Association for the Study of Liver Diseases. FAU - Kubal, Chandrashekhar A AU - Kubal CA AUID- ORCID: 0000-0003-4043-2943 AD - Transplant Division, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN. FAU - Mangus, Richard AU - Mangus R AD - Transplant Division, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN. FAU - Ekser, Burcin AU - Ekser B AD - Transplant Division, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN. FAU - Mihaylov, Plamen AU - Mihaylov P AD - Transplant Division, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN. FAU - Ceballos, Brian AU - Ceballos B AD - Transplant Division, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN. FAU - Higgins, Nancy AU - Higgins N AD - Indiana University Health Inc., Methodist Hospital, Histocompatibility Laboratory, Indianapolis, IN. FAU - Chalasani, Naga AU - Chalasani N AD - Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, IN. FAU - Ghabril, Marwan AU - Ghabril M AD - Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, IN. FAU - Nephew, Lauren AU - Nephew L AD - Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, IN. FAU - Lobashevsky, Andrew AU - Lobashevsky A AD - Indiana University Health Inc., Methodist Hospital, Histocompatibility Laboratory, Indianapolis, IN. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Liver Transpl JT - Liver transplantation : official publication of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society JID - 100909185 RN - 0 (Epitopes) RN - 0 (Histocompatibility Antigens Class II) RN - 0 (Immunosuppressive Agents) RN - 0 (Isoantibodies) RN - WM0HAQ4WNM (Tacrolimus) SB - IM CIN - Liver Transpl. 2019 Jan;25(1):184-185. PMID: 30329206 CIN - Liver Transpl. 2021 Nov;27(11):1592-1602. PMID: 34310028 MH - Adult MH - Aged MH - End Stage Liver Disease/surgery MH - Epitopes/immunology MH - Female MH - Graft Rejection/blood/*diagnosis/immunology/prevention & control MH - Graft Survival MH - Histocompatibility Antigens Class II/*immunology MH - *Histocompatibility Testing MH - Humans MH - Immunosuppressive Agents/therapeutic use MH - Isoantibodies/*blood/immunology/isolation & purification MH - Liver Transplantation/*adverse effects MH - Male MH - Middle Aged MH - Predictive Value of Tests MH - Prognosis MH - Prospective Studies MH - Tacrolimus/therapeutic use MH - Tissue Donors EDAT- 2018/08/25 06:00 MHDA- 2019/06/07 06:00 CRDT- 2018/08/25 06:00 PHST- 2018/02/09 00:00 [received] PHST- 2018/05/23 00:00 [revised] PHST- 2018/05/23 00:00 [accepted] PHST- 2018/08/25 06:00 [entrez] PHST- 2018/08/25 06:00 [pubmed] PHST- 2019/06/07 06:00 [medline] AID - 10.1002/lt.25286 [doi] PST - ppublish SO - Liver Transpl. 2018 Aug;24(8):1101-1108. doi: 10.1002/lt.25286.