PMID- 34186057 OWN - NLM STAT- MEDLINE DCOM- 20211018 LR - 20211018 IS - 1523-1755 (Electronic) IS - 0085-2538 (Linking) VI - 100 IP - 4 DP - 2021 Oct TI - The emerging field of non-human leukocyte antigen antibodies in transplant medicine and beyond. PG - 787-798 LID - S0085-2538(21)00581-0 [pii] LID - 10.1016/j.kint.2021.04.044 [doi] AB - The major medical advances in our knowledge of the human leukocyte antigen (HLA) system have allowed us to uncover several gaps in our understanding of alloimmunity. Although the non-HLA system has long sparked the interest of the transplant community, recognition of the role of immunity to non-HLA antigenic targets has only emerged recently. In this review, we will provide a comprehensive summary of the paradigm-changing concept of immunity to the non-HLA angiotensin II type 1 receptor (AT1R), discovered by Duska Dragun et al., that began from careful bedside clinical observations, to validated detection of anti-AT1R antibodies and lead to clinical intervention. This scientific approach has also allowed the recognition of broader pathogenicity of anti-AT1R antibodies across multiple organ transplants and in other human diseases, the integration of both non-HLA and HLA systems to understand their immunologic effects on organ allografts, and the identification of future directions for therapeutic intervention to modulate immunity to AT1R. Rationally designed successful interventions to target AT1R system provide an exemplar for other non-HLA antibodies to cross borders between medical specialties, will generate new avenues in translational research beyond transplantation, and will foster the development of new and reliable tools to improve our understanding of non-HLA immunity and ultimately allow us to improve patient care. CI - Copyright (c) 2021 International Society of Nephrology. Published by Elsevier Inc. All rights reserved. FAU - Lefaucheur, Carmen AU - Lefaucheur C AD - Paris Translational Research Center for Organ Transplantation, Institut National de la Sante et de la Recherche Medicale Unite Mixte de Recherche (UMR)-S970, Universite de Paris, Paris, France; Kidney Transplant Department, Saint Louis Hospital, Assistance Publique-Hopitaux de Paris, Paris, France. Electronic address: carmen.lefaucheur@wanadoo.fr. FAU - Louis, Kevin AU - Louis K AD - Kidney Transplant Department, Saint Louis Hospital, Assistance Publique-Hopitaux de Paris, Paris, France; Human Immunology and Immunopathology, Institut National de la sante et de la recherche medicale Unite Mixte de Recherche (UMR)-976, Universite de Paris, Paris, France. FAU - Philippe, Aurelie AU - Philippe A AD - Department of Nephrology and Critical Care Medicine, Campus Virchow Klinikum, Berlin, Germany; Charite-Universitatsmedizin Berlin, Corporate Member of Freie Universitat Berlin, Humboldt-Universitat zu Berlin, and Berlin Institute of Health, Berlin, Germany. FAU - Loupy, Alexandre AU - Loupy A AD - Paris Translational Research Center for Organ Transplantation, Institut National de la Sante et de la Recherche Medicale Unite Mixte de Recherche (UMR)-S970, Universite de Paris, Paris, France; Department of Kidney Transplantation, Necker Hospital, Assistance Publique-Hopitaux de Paris, Paris, France. FAU - Coates, P Toby AU - Coates PT AD - Discipline of Medicine, School of Medicine, The University of Adelaide, Adelaide, South Australia, Australia; Central Northern Adelaide Renal and Transplantation Service (CNARTS), The Royal Adelaide Hospital, Adelaide, South Australia, Australia. LA - eng PT - Journal Article PT - Review DEP - 20210626 PL - United States TA - Kidney Int JT - Kidney international JID - 0323470 RN - 0 (HLA Antigens) RN - 0 (Receptor, Angiotensin, Type 1) SB - IM MH - Graft Rejection/prevention & control MH - HLA Antigens MH - *Kidney Transplantation MH - *Medicine MH - Receptor, Angiotensin, Type 1 OTO - NOTNLM OT - alloimmunity OT - angiotensin OT - antibodies OT - non-human leukocyte antigen OT - rejection OT - transplantation EDAT- 2021/06/30 06:00 MHDA- 2021/10/21 06:00 CRDT- 2021/06/29 20:11 PHST- 2021/02/16 00:00 [received] PHST- 2021/04/03 00:00 [revised] PHST- 2021/04/21 00:00 [accepted] PHST- 2021/06/30 06:00 [pubmed] PHST- 2021/10/21 06:00 [medline] PHST- 2021/06/29 20:11 [entrez] AID - S0085-2538(21)00581-0 [pii] AID - 10.1016/j.kint.2021.04.044 [doi] PST - ppublish SO - Kidney Int. 2021 Oct;100(4):787-798. doi: 10.1016/j.kint.2021.04.044. Epub 2021 Jun 26.