PMID- 26227015 OWN - NLM STAT- MEDLINE DCOM- 20160927 LR - 20230124 IS - 1600-6143 (Electronic) IS - 1600-6135 (Linking) VI - 15 IP - 12 DP - 2015 Dec TI - De Novo Donor-Specific HLA Antibodies Are Associated With Rapid Loss of Graft Function Following Islet Transplantation in Type 1 Diabetes. PG - 3239-46 LID - 10.1111/ajt.13407 [doi] AB - Outcomes after islet transplantation continue to improve but etiology of graft failure remains unclear. De novo donor-specific human leukocyte antigen (HLA) antibodies (DSA) posttransplant are increasingly recognized as a negative prognostic marker. Specific temporal associations between DSA and graft function remain undefined particularly in programs undertaking multiple sequential transplants. Impact of de novo DSA on graft function over 12 months following first islet transplant was determined prospectively in consecutive recipients taking tacrolimus/mycophenolate immunosuppression at a single center. Mixed-meal tolerance test was undertaken in parallel with HLA antibody assessment pretransplant and 1-3 months posttransplant. Sixteen participants received a total of 26 islet transplants. Five (19%) grafts were associated with de novo DSA. Five (31%) recipients were affected: three post-first transplant; two post-second transplant. DSA developed within 4 weeks of all sensitizing grafts and were associated with decreased stimulated C-peptide (median [interquartile range]) at 3 months posttransplant (DSA negative: 613(300-1090); DSA positive 106(34-235) pmol/L [p = 0.004]). De novo DSA directed against most recent islet transplant were absolutely associated with loss of graft function despite maintained immunosuppression at 12 months in the absence of a rescue nonsensitizing transplant. Alemtuzumab induction immunosuppression was associated with reduced incidence of de novo DSA formation (p = 0.03). CI - (c) Copyright 2015 The American Society of Transplantation and the American Society of Transplant Surgeons. FAU - Brooks, A M S AU - Brooks AM AD - Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK. FAU - Carter, V AU - Carter V AD - Histocompatibility and Immunogenetics Laboratory, National Health Service Blood and Transplant, Newcastle upon Tyne, UK. FAU - Liew, A AU - Liew A AD - Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK. FAU - Marshall, H AU - Marshall H AD - Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK. FAU - Aldibbiat, A AU - Aldibbiat A AD - Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK. FAU - Sheerin, N S AU - Sheerin NS AD - Institute of Transplantation, Freeman Hospital, Newcastle upon Tyne, UK. FAU - Manas, D M AU - Manas DM AD - Institute of Transplantation, Freeman Hospital, Newcastle upon Tyne, UK. FAU - White, S A AU - White SA AD - Institute of Transplantation, Freeman Hospital, Newcastle upon Tyne, UK. FAU - Shaw, J A M AU - Shaw JA AD - Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK. LA - eng PT - Clinical Trial PT - Journal Article DEP - 20150730 PL - United States TA - Am J Transplant JT - American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons JID - 100968638 RN - 0 (HLA Antigens) RN - 0 (Isoantibodies) SB - IM MH - Adult MH - Diabetes Mellitus, Type 1/*surgery MH - Female MH - Follow-Up Studies MH - Graft Rejection/*epidemiology/etiology MH - Graft Survival MH - HLA Antigens/*immunology MH - Histocompatibility Testing MH - Humans MH - Incidence MH - Islets of Langerhans Transplantation/*adverse effects MH - Isoantibodies/*blood/immunology MH - Male MH - Middle Aged MH - Postoperative Complications MH - Prognosis MH - Prospective Studies MH - Risk Factors MH - *Tissue Donors OTO - NOTNLM OT - Antibody biology OT - clinical research/practice OT - islet isolation OT - islet transplantation EDAT- 2015/08/01 06:00 MHDA- 2016/09/28 06:00 CRDT- 2015/08/01 06:00 PHST- 2014/12/07 00:00 [received] PHST- 2015/04/03 00:00 [revised] PHST- 2015/04/23 00:00 [accepted] PHST- 2015/08/01 06:00 [entrez] PHST- 2015/08/01 06:00 [pubmed] PHST- 2016/09/28 06:00 [medline] AID - S1600-6135(22)00489-0 [pii] AID - 10.1111/ajt.13407 [doi] PST - ppublish SO - Am J Transplant. 2015 Dec;15(12):3239-46. doi: 10.1111/ajt.13407. Epub 2015 Jul 30.