PMID- 36219480 OWN - NLM STAT- MEDLINE DCOM- 20221214 LR - 20230422 IS - 2379-3708 (Electronic) IS - 2379-3708 (Linking) VI - 7 IP - 22 DP - 2022 Nov 22 TI - Pathogenicity and impact of HLA class I alleles in aplastic anemia patients of different ethnicities. LID - 10.1172/jci.insight.163040 [doi] LID - e163040 AB - Acquired aplastic anemia (AA) is caused by autoreactive T cell-mediated destruction of early hematopoietic cells. Somatic loss of human leukocyte antigen (HLA) class I alleles was identified as a mechanism of immune escape in surviving hematopoietic cells of some patients with AA. However, pathogenicity, structural characteristics, and clinical impact of specific HLA alleles in AA remain poorly understood. Here, we evaluated somatic HLA loss in 505 patients with AA from 2 multi-institutional cohorts. Using a combination of HLA mutation frequencies, peptide-binding structures, and association with AA in an independent cohort of 6,323 patients from the National Marrow Donor Program, we identified 19 AA risk alleles and 12 non-risk alleles and established a potentially novel AA HLA pathogenicity stratification. Our results define pathogenicity for the majority of common HLA-A/B alleles across diverse populations. Our study demonstrates that HLA alleles confer different risks of developing AA, but once AA develops, specific alleles are not associated with response to immunosuppression or transplant outcomes. However, higher pathogenicity alleles, particularly HLA-B*14:02, are associated with higher rates of clonal evolution in adult patients with AA. Our study provides insights into the immune pathogenesis of AA, opening the door to future autoantigen identification and improved understanding of clonal evolution in AA. FAU - Olson, Timothy S AU - Olson TS AD - Comprehensive Bone Marrow Failure Center and. AD - Division of Oncology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA. FAU - Frost, Benjamin F AU - Frost BF AD - Division of Oncology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA. AD - Division of Hematology/Oncology, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA. FAU - Duke, Jamie L AU - Duke JL AD - Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA. FAU - Dribus, Marian AU - Dribus M AD - Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, Louisiana, USA. FAU - Xie, Hongbo M AU - Xie HM AD - Department of Biomedical and Health Informatics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA. FAU - Prudowsky, Zachary D AU - Prudowsky ZD AD - Department of Pediatrics, Division of Hematology/Oncology, Baylor College of Medicine, Houston, Texas, USA. AD - Texas Children's Cancer and Hematology Center, Houston, Texas, USA. FAU - Furutani, Elissa AU - Furutani E AD - Dana Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, Massachusetts, USA. FAU - Gudera, Jonas AU - Gudera J AD - Dana Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, Massachusetts, USA. AD - Department of Pediatrics, Dr. von Hauner Children's Hospital, LMU Klinikum Munich, Munich, Germany. FAU - Shah, Yash B AU - Shah YB AD - Comprehensive Bone Marrow Failure Center and. AD - Division of Oncology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA. AD - Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA. FAU - Ferriola, Deborah AU - Ferriola D AD - Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA. FAU - Dinou, Amalia AU - Dinou A AD - Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA. FAU - Pagkrati, Ioanna AU - Pagkrati I AD - Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA. FAU - Kim, Soyoung AU - Kim S AD - Center for International Blood and Marrow Transplant Research and. AD - Division of Biostatistics, Medical College of Wisconsin, Milwaukee, Wisconsin, USA. FAU - Xu, Yixi AU - Xu Y AD - Center for International Blood and Marrow Transplant Research and. FAU - He, Meilun AU - He M AD - Center for International Blood and Marrow Transplant Research, National Marrow Donor Program/Be The Match, Minneapolis, Minneapolis, USA. FAU - Zheng, Shannon AU - Zheng S AD - Division of Hematology/Oncology, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA. FAU - Nijim, Sally AU - Nijim S AD - Division of Hematology/Oncology, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA. FAU - Lin, Ping AU - Lin P AD - Division of Hematology/Oncology, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA. FAU - Xu, Chong AU - Xu C AD - Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA. AD - Parker Institute for Cancer Immunotherapy and Center for Cellular Immunotherapies, University of Pennsylvania, Philadelphia, Pennsylvania, USA. FAU - Nakano, Taizo A AU - Nakano TA AD - Center for Cancer and Blood Disorders, Children's Hospital Colorado, Aurora, Colorado, USA. FAU - Oved, Joseph H AU - Oved JH AD - Comprehensive Bone Marrow Failure Center and. AD - Department of Pediatric Transplant and Cell Therapy, Memorial Sloan Kettering Cancer Center, New York, New York, USA. FAU - Carreno, Beatriz M AU - Carreno BM AD - Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA. AD - Parker Institute for Cancer Immunotherapy and Center for Cellular Immunotherapies, University of Pennsylvania, Philadelphia, Pennsylvania, USA. FAU - Bolon, Yung-Tsi AU - Bolon YT AD - Center for International Blood and Marrow Transplant Research, National Marrow Donor Program/Be The Match, Minneapolis, Minneapolis, USA. FAU - Gadalla, Shahinaz M AU - Gadalla SM AD - Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Rockville, Maryland, USA. FAU - Marsh, Steven Ge AU - Marsh SG AD - Anthony Nolan Research Institute and University College London Cancer Institute, Royal Free Campus, London, United Kingdom. FAU - Paczesny, Sophie AU - Paczesny S AD - Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, South Carolina, USA. FAU - Lee, Stephanie J AU - Lee SJ AD - Center for International Blood and Marrow Transplant Research and. AD - Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA. FAU - Monos, Dimitrios S AU - Monos DS AD - Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA. AD - Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA. FAU - Shimamura, Akiko AU - Shimamura A AD - Dana Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, Massachusetts, USA. FAU - Bertuch, Alison A AU - Bertuch AA AD - Department of Pediatrics, Division of Hematology/Oncology, Baylor College of Medicine, Houston, Texas, USA. AD - Texas Children's Cancer and Hematology Center, Houston, Texas, USA. FAU - Gragert, Loren AU - Gragert L AD - Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, Louisiana, USA. FAU - Spellman, Stephen R AU - Spellman SR AD - Center for International Blood and Marrow Transplant Research, National Marrow Donor Program/Be The Match, Minneapolis, Minneapolis, USA. FAU - Babushok, Daria V AU - Babushok DV AD - Comprehensive Bone Marrow Failure Center and. AD - Division of Hematology/Oncology, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA. LA - eng GR - P30 CA008748/CA/NCI NIH HHS/United States GR - R03 HL160678/HL/NHLBI NIH HHS/United States GR - K08 HL132101/HL/NHLBI NIH HHS/United States GR - U24 CA076518/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. DEP - 20221122 PL - United States TA - JCI Insight JT - JCI insight JID - 101676073 RN - 0 (Histocompatibility Antigens Class I) RN - 0 (HLA-B Antigens) RN - 0 (HLA Antigens) SB - IM MH - Adult MH - Humans MH - *Anemia, Aplastic/genetics/pathology MH - Alleles MH - Histocompatibility Antigens Class I/genetics MH - HLA-B Antigens/genetics MH - HLA Antigens/genetics PMC - PMC9746824 OTO - NOTNLM OT - Autoimmune diseases OT - Autoimmunity OT - Clonal selection OT - Hematology OT - Hematopoietic stem cells EDAT- 2022/10/12 06:00 MHDA- 2022/12/15 06:00 PMCR- 2022/11/22 CRDT- 2022/10/11 12:03 PHST- 2022/06/27 00:00 [received] PHST- 2022/10/05 00:00 [accepted] PHST- 2022/10/12 06:00 [pubmed] PHST- 2022/12/15 06:00 [medline] PHST- 2022/10/11 12:03 [entrez] PHST- 2022/11/22 00:00 [pmc-release] AID - 163040 [pii] AID - 10.1172/jci.insight.163040 [doi] PST - epublish SO - JCI Insight. 2022 Nov 22;7(22):e163040. doi: 10.1172/jci.insight.163040.