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Narula T, Alvarez F, Abdelmoneim Y, Erasmus D, Li Z, Elrefaei M. Induction immunosuppression strategies and outcomes post-lung transplant: A single center experience. Transpl Immunol 2024; 85:102081. [PMID: 38986916 DOI: 10.1016/j.trim.2024.102081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 07/03/2024] [Accepted: 07/07/2024] [Indexed: 07/12/2024]
Abstract
PURPOSE Currently 80% of lung transplant centers use induction immunosuppression. However, there is a lack of standardization of induction protocols within and across lung transplant centers. This study explores the association of two different induction immunosuppression strategies used at our center [single dose rabbit antithymocyte globulin (rATG) vs. alemtuzumab] compared to no induction with immunologic and clinical outcomes after lung transplantation. METHODS A total of 174 consecutive lung transplant recipients (LTR) between 2016 and 2019 were included in the analysis. Twenty nine LTR (16.7%) received no induction, 22 LTR (12.6%) received alemtuzumab, 123 LTR (70.6%) received a single dose of rATG; 1.5 mg/kg within 24 h of transplant for induction. All LTR had a negative flow cytometry crossmatch on the day of the transplant. All LTR were assessed for de novo HLA donor-specific antibodies (DSA) development and clinical outcomes, including the risk of acute cellular rejection (ACR), antibody-mediated rejection (AMR), chronic lung allograft dysfunction (CLAD), and overall survival post-transplant. RESULTS The median lung allocation score (LAS) was significantly higher in LTR that did not receive Induction immunosuppression (76; range = 35.3-94.3) compared to induction with rATG (41.6; range = 31.6-91) and alemtuzumab (51; range = 33.1-88.2) (p < 0.001). De novo HLA DSA were detected in 50/174 (28.7%) LTR within 12 months post-transplant. They were detected in 13/29 (44.8%) LTR without induction immunosuppression compared to 28/123 (22.8%) and 9/22 (40.9%) LTR with rATG and alemtuzumab induction, respectively (p = 0.02). The percent freedom from ACR rates between LTR who received alemtuzumab induction was significantly higher compared to LTR who received rATG or no induction at 1 (p = 0.02), 2 (p = 0.01) and 3 (p = 0.05) years post-transplant. In addition, the overall 1-year survival rates were significantly higher in LTR who received rATG or alemtuzumab induction compared to LTR without induction immunosuppression (p = 0.02). CONCLUSION Induction immunosuppression strategies utilizing rATG or Alemtuzumab have unique and contrasting benefits in LTR. Combination of alemtuzumab induction and a lower dose of maintenance immunosuppression may reduce the incidence of ACR in LTR. Single-dose rATG or alemtuzumab induction immunosuppression may also improve the 1 year overall LTR survival compared to no induction.
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Affiliation(s)
- Tathagat Narula
- Division of Lung Failure and Transplant, Mayo Clinic, Jacksonville, FL, United States of America
| | - Francisco Alvarez
- Division of Lung Failure and Transplant, Mayo Clinic, Jacksonville, FL, United States of America
| | - Yousif Abdelmoneim
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Jacksonville, FL, United States of America
| | - David Erasmus
- Division of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University, Nashville, TN, United States of America
| | - Zhuo Li
- Health Sciences Research, Mayo Clinic, Jacksonville, FL, United States of America
| | - Mohamed Elrefaei
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Jacksonville, FL, United States of America.
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2
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Zhang X, Reinsmoen NL, Kobashigawa JA. HLA Mismatches Identified by a Novel Algorithm Predict Risk of Antibody-mediated Rejection From De Novo Donor-specific Antibodies. Transplantation 2024:00007890-990000000-00829. [PMID: 39049137 DOI: 10.1097/tp.0000000000005140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
BACKGROUND The development of de novo donor-specific antibodies (dnDSA) and antibody-mediated rejection (AMR) remains a barrier to long-term graft and patient survival. Most dnDSA are directed against mismatched donor HLA-DQ antigens. Here, we describe a novel algorithm, which we have termed categorical amino acid mismatched epitope, to evaluate HLA-DQ mismatches. METHODS In this algorithm, amino acid residues of HLA-DQ protein were categorized into 4 groups based on their chemical characteristics. The likelihood of categorically mismatched peptides presented by the recipient's HLA-DRB1 was expressed as a normalized value, %Rank score. Categorical HLA-DQ mismatches were analyzed in 386 heart transplant recipients who were mismatched with their donors at the HLA-DQB1 locus. RESULTS We found that the presence of DQB1 mismatches with %Rank score ≤1 was associated with the development of dnDSA (P = 0.002). Furthermore, dnDSA increased the risk of AMR only in recipients who had DQ mismatches with %Rank score ≤1 (hazard ratio = 5.8), but the freedom from AMR was comparable between recipients with dnDSA and those without dnDSA if %Rank scores of DQ mismatching were >1. CONCLUSIONS These results suggest that HLA-DQ mismatches evaluated by the categorical amino acid mismatched epitope algorithm can stratify the risk of development of dnDSA and AMR in heart transplant recipients.
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Affiliation(s)
- Xiaohai Zhang
- HLA and Immunogenetics Laboratory, Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Nancy L Reinsmoen
- Independent HLA Consultant, Cedars-Sinai Medical Center, Scottsdale, AZ
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3
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Masaoka H, Yamamoto Y, Uchiyama M, Iguchi K, Nakamura M, Yagita H, Imazuru T, Shimokawa T. Graft Protective and Intercellular Immunomodulatory Effects by Adoptive Transfer of an Agonistic Anti-BTLA mAb (3C10) Induced CD4 +CD25 + Regulatory T Cells in Murine Cardiac Allograft Transplant Model. Transplant Proc 2024; 56:692-700. [PMID: 38360464 DOI: 10.1016/j.transproceed.2024.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 01/16/2024] [Indexed: 02/17/2024]
Abstract
BACKGROUND We demonstrated that an agonistic anti-B and T lymphocyte attenuator antibody (3C10) prolonged cardiac survival by inducing regulatory T cells (Treg). However, the mechanisms of immune tolerance in the recipients remained unclear. In this study, we investigated the graft-protective and intercellular immunomodulatory effects of adoptive transfer (AT) of 3C10-induced Tregs in a murine cardiac allograft transplant model. METHODS Thirty days after transplantation of a C57BL/6 heart into the primary 3C10-treated CBA recipients, splenic CD4+CD25+ cells from these recipients (3C10/AT group) or naïve CBA mice (no-treatment group) were adoptively transferred into secondary CBA recipients with a C57BL/6 heart. To confirm the requirement for 3C10-induced Tregs, we administered an anti-interleukin-2 receptor alpha antibody (PC-61) to secondary CBA recipients. Additionally, histologic and fluorescent staining, cell proliferation analysis, flow cytometry, and donor-specific antibody (DSA) measurements were performed. RESULTS 3C10/AT-treated CBA recipients resulted in significantly prolonged allograft survival (median survival time [MST], >50 days). Allografts displayed prolonged function with preservation of vessel structure by maintaining high numbers of splenic CD4+CD25+Foxp3+ Treg and intramyocardial CD4+Foxp3+ cells. DSA levels were suppressed in 3C10/AT-treated CBA recipients. Moreover, PC-61 administration resulted in a shorter MSTs of cardiac allograft survivals, a detrimental increase in DSA production, and enhanced expression of programmed cell death (PD)-1. CONCLUSION AT of 3C10-induced Tregs may be a promising graft-protective strategy to prolong allograft survival and suppress DSA production, driven by the promotion of splenic and graft-infiltrating Tregs and collaboration with PD-1+ T cells and Treg.
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Affiliation(s)
- Hisanori Masaoka
- Department of Cardiovascular Surgery, Teikyo University, Tokyo, Japan
| | - Yasuto Yamamoto
- Department of Cardiovascular Surgery, Teikyo University, Tokyo, Japan
| | - Masateru Uchiyama
- Department of Cardiovascular Surgery, Teikyo University, Tokyo, Japan.
| | - Kazuhito Iguchi
- Department of Cardiovascular Surgery, Teikyo University, Tokyo, Japan
| | - Masahiro Nakamura
- Department of Cardiovascular Surgery, Teikyo University, Tokyo, Japan
| | - Hideo Yagita
- Department of Immunology, Juntendo University, Tokyo, Japan
| | - Tomohiro Imazuru
- Department of Cardiovascular Surgery, Teikyo University, Tokyo, Japan
| | - Tomoki Shimokawa
- Department of Cardiovascular Surgery, Teikyo University, Tokyo, Japan
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Fedrigo M, Berry GJ, Coutance G, Reed EF, Lin CY, Giarraputo A, Kransdorf E, Thaunat O, Goddard M, Angelini A, Neil DAH, Bruneval P, Duong Van Huyen JP, Loupy A, Miller DV. Report of the 2022 Banff Heart Concurrent: Focus on non-human leukocyte antigen antibodies in rejection and the pathology of "mixed" rejection. Am J Transplant 2024; 24:533-541. [PMID: 37838218 DOI: 10.1016/j.ajt.2023.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 10/03/2023] [Accepted: 10/03/2023] [Indexed: 10/16/2023]
Abstract
The Banff Heart Concurrent Session, held as part of the 16th Banff Foundation for Allograft Pathology Conference at Banff, Alberta, Canada, on September 21, 2022, focused on 2 major topics: non-human leukocyte antigen (HLA) antibodies and mixed rejection. Each topic was addressed in a multidisciplinary fashion with clinical, immunological, and pathology perspectives and future developments and prospectives. Following the Banff organization model and principles, the collective aim of the speakers on each topic was to • Determine current knowledge gaps in heart transplant pathology • Identify limitations of current pathology classification systems • Discuss next steps in addressing gaps and refining classification system.
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Affiliation(s)
- Marny Fedrigo
- Department of Cardiac, Thoracic and Vascular Sciences, and Public Health, University of Padova, Padua Italy
| | - Gerald J Berry
- Department of Pathology, Stanford University School of Medicine, Stanford, California, USA
| | - Guillaume Coutance
- Department of cardiac surgery, La Pitié-Salpêtrière Hospital, Assistance Publique des Hôpitaux de Paris (APHP), Sorbonne University Medical School, Paris France
| | - Elaine F Reed
- UCLA Immunogenetics Center, David Geffen School of Medicine, University of California, Los Angeles, California, USA
| | - Chieh-Yu Lin
- Department of Pathology and Immunology, School of Medicine, Washington University St. Louis, Missouri, USA
| | - Alessia Giarraputo
- Department of Cardiac, Thoracic and Vascular Sciences, and Public Health, University of Padova, Padua Italy
| | - Evan Kransdorf
- Smidt Heart Institute, Cedars-Sinai Medical Center, Beverly Hills, California, USA
| | - Olivier Thaunat
- Department of Transplantation, Nephrology and Clinical Immunology, Hospices Civils de Lyon, Edouard Herriot Hospital, Lyon France
| | - Martin Goddard
- The Cardiothoracic Transplant Unit Papworth Hospital, Cambridge, United Kingdom
| | - Annalisa Angelini
- Department of Cardiac, Thoracic and Vascular Sciences, and Public Health, University of Padova, Padua Italy
| | - Desley A H Neil
- University Hospital Birmingham NHS Foundation Trust, Birmingham, United Kingdom
| | - Patrick Bruneval
- Université de Paris Cité, INSERM, PARCC, Paris Institute for Transplantation and Organ Regeneration, Paris, France
| | | | - Alexandre Loupy
- Université de Paris Cité, INSERM, PARCC, Paris Institute for Transplantation and Organ Regeneration, Paris, France
| | - Dylan V Miller
- Utah Transplant Affiliated Hospitals (UTAH) Heart Transplant Network, Intermountain Central Laboratory, Salt Lake City, Utah, USA.
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5
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Abraha J, Rao P, Morris GP. Modes of assay interference and the effectiveness of serum pretreatment approaches in detection of anti-HLA antibodies. J Clin Pathol 2024; 77:284-290. [PMID: 36600574 DOI: 10.1136/jcp-2022-208371] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022]
Abstract
AIMS Several modes of assay interference common to immunoassays affect solid-phase single-antigen bead-based immunoassays (SAB) used to detect antibodies against human leucocyte antigens (HLA). Best practice recommendations include methods to address assay interference, though the clinical impact and optimal approaches are undefined. We sought to evaluate assay interference in HLA SAB to identify an efficient approach for avoiding erroneous results. METHODS Retrospective analysis of 14 059 patient samples tested for anti-HLA antibodies was performed. This included 4685 samples tested prior to implementation of serum pretreatment with EDTA and 4982 samples tested with routine EDTA treatment using the same testing algorithm. An algorithm for efficiently identifying and processing samples with suspected interference was evaluated in a separate cohort of 4392 EDTA-treated samples. RESULTS EDTA serum pretreatment reduced assay interference, but did not eliminate all modes of interference. A protocol for identification and testing of samples with suspected interference facilitated efficient detection of interference while reducing the amount of additional testing required. CONCLUSIONS Our data indicate that a single-method approach is insufficient to address all sources of interference in HLA SAB. A multimodal approach with a proactive screening is a more effective way to minimise risk of erroneous results.
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Affiliation(s)
- Joseph Abraha
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Ping Rao
- Aurora Health Care, Milwaukee, Wisconsin, USA
| | - Gerald P Morris
- Department of Pathology, University of California San Diego, La Jolla, California, USA
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6
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Clemmensen TS, Hjort Baatrup J, Bjerre KP, Lichscheidt E, Nielsen PK, Eiskjaer H. Routine screening for HLA Antibodies in Heart Transplant patients-Does it affect clinical decision making? Clin Transplant 2024; 38:e15281. [PMID: 38504577 DOI: 10.1111/ctr.15281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/31/2024] [Accepted: 02/19/2024] [Indexed: 03/21/2024]
Abstract
BACKGROUND We aimed to assess outcomes in patients with and without donor specific antibodies (DSA) and to evaluate the relationship between DSA presence and graft function, cardiac allograft vasculopathy (CAV), and mortality. METHODS The study population comprises 193 consecutive long-term heart transplanted (HTx) patients who underwent DSA surveillance between 2016 and 2022. The patients were prospectively screened for CAV through serial coronary angiograms, graft function impairment through serial echocardiograms, and cardiac biomarkers. The patients were followed from the first DSA measurement until death, 5 years follow-up or right censuring on the 30th of June 2023. RESULTS DSAs were detected in 50 patients using a cut-off at MFI ≥1000 and 45 patients using a cut-off at ≥2000 MFI. The median time since HTx was 9.0 years [3.0-14.4]. DSA positive patients had poorer graft function and higher values of NT-proBNP and troponin T, and more prevalent CAV than DSA negative patients. In total, 25 patients underwent endomyocardial biopsies due to DSA presence while another eight patients underwent endomyocardial biopsies for other reasons. Histological antibody mediated rejection (AMR) signs were seen in three biopsies. During a median follow-up of five years [4.7-5], a total of 41 patients died. Mortality rates did not differ between DSA positive and DSA negative patients (HR 1.2, 95% CI .6-2.4). DSA positive patients were more likely to experience CAV progression than DSA negative patients (HR 2.7, 95% CI 1.5-4.8) CONCLUSIONS: Routine screening reveals DSA in approximately 25% of long-term HTx patients but is rarely related to histopathological AMR signs. DSA presence was associated with poorer graft function and more prevalent and progressive CAV. However, DSA positive patients had similar survival rates to DSA negative patients.
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Affiliation(s)
| | | | | | - Emil Lichscheidt
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
| | | | - Hans Eiskjaer
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
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7
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Jung R, Ly K, Taniguchi M, Arriola AG, Gravante C, Shinn D, Mathew L, Hamad E, Geier S, Liacini A. Improved Graft Function following Desensitization of Anti-AT 1R and Autoantibodies in a Heart Transplant Recipient Negative for Donor-Specific Antibodies with Antibody-Mediated Rejection: A Case Report. Int J Mol Sci 2024; 25:2218. [PMID: 38396895 PMCID: PMC10888554 DOI: 10.3390/ijms25042218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 02/02/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024] Open
Abstract
HLA donor-specific antibodies (DSAs) pre and post transplant increase the risk of antibody-mediated rejection (AMR) and lead to poor graft survival. Increasing data exist to support the involvement of non-HLA antibodies in triggering an immunological response. The development of non-HLA antibodies specific for AT1R is associated with poor clinical outcomes in orthotopic heart transplant recipients. This case presents an investigation of non-HLA antibodies in a 56-year-old female heart transplant recipient diagnosed with AMR in the absence of DSAs.
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Affiliation(s)
- Regina Jung
- Department of Pharmacy, Lahey Hospital and Medical Center, Burlington, MA 01805, USA
| | - Kevin Ly
- Department of Pharmacy, Temple University Hospital, Philadelphia, PA 19140, USA
| | - Michiko Taniguchi
- Immunogenetics Laboratory, Temple University Hospital, Philadelphia, PA 19140, USA
- Department of Pathology and Laboratory Medicine, Lewis Katz School of Medicine, Philadelphia, PA 19140, USA
| | - Aileen Grace Arriola
- Immunogenetics Laboratory, Temple University Hospital, Philadelphia, PA 19140, USA
- Department of Pathology and Laboratory Medicine, Lewis Katz School of Medicine, Philadelphia, PA 19140, USA
| | - Christopher Gravante
- Immunogenetics Laboratory, Temple University Hospital, Philadelphia, PA 19140, USA
| | - Derek Shinn
- Immunogenetics Laboratory, Temple University Hospital, Philadelphia, PA 19140, USA
| | - Leena Mathew
- Immunogenetics Laboratory, Temple University Hospital, Philadelphia, PA 19140, USA
| | - Eman Hamad
- Heart and Vascular Institute, Section of Cardiology, Lewis Katz School of Medicine, Philadelphia, PA 19140, USA
| | - Steven Geier
- Immunogenetics Laboratory, Temple University Hospital, Philadelphia, PA 19140, USA
- Department of Pathology and Laboratory Medicine, Lewis Katz School of Medicine, Philadelphia, PA 19140, USA
| | - Abdelhamid Liacini
- Immunogenetics Laboratory, Temple University Hospital, Philadelphia, PA 19140, USA
- Department of Pathology and Laboratory Medicine, Lewis Katz School of Medicine, Philadelphia, PA 19140, USA
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8
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Dipchand AI, Webber SA. Pediatric heart transplantation: Looking forward after five decades of learning. Pediatr Transplant 2024; 28:e14675. [PMID: 38062996 DOI: 10.1111/petr.14675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 11/17/2023] [Accepted: 11/24/2023] [Indexed: 02/07/2024]
Abstract
Heart transplantation has become the standard of care for pediatric patients with end-stage heart disease throughout the world. Since the first transplant was performed in 1967, the number of transplants has grown dramatically with 13 449 pediatric heart transplants being reported to The International Society of Heart and Lung Transplant (ISHLT) between January 1992 and June 30, 2018. Outcomes have consistently improved over the last few decades, specifically short-term outcomes. Most recent survival data demonstrate that recipients who survive to 1-year post-transplant have excellent long-term survival with more than 60% of those who were transplanted as infants being alive 25 years later. Nonetheless, the rates of graft loss beyond the first year have remained relatively constant over time; driven primarily by our poor understanding and lack of treatments for chronic allograft vasculopathy (CAV). Acute rejection, CAV, graft failure, and infection continue to be the major causes of death within the first 5 years post-transplant. In addition, renal dysfunction, malignancy, and the need for re-transplantation remain as significant issues that require close follow-up. Looking forward, key challenges include improving donor utilization rates (including donation after cardiac death (DCD) and the use of ex vivo perfusion devices), the development of non-invasive biomarkers for rejection, efforts to mitigate the long-term effects of immunosuppression, and prevention of CAV. It is not possible to cover the entire evolution of pediatric heart transplantation over the last five decades, but in this review, we hope to touch on key observations, lessons learned, and practice changes that have advanced the field, as well as glance ahead to the next decade.
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Affiliation(s)
- Anne I Dipchand
- Department of Paediatrics, Head, Heart Transplant, Labatt Family Heart Centre, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Steven A Webber
- Department of Pediatrics, Vanderbilt University School of Medicine, Pediatrician-in-Chief, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee, USA
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Martini L, Mandoli GE, Pastore MC, Pagliaro A, Bernazzali S, Maccherini M, Henein M, Cameli M. Heart transplantation and biomarkers: a review about their usefulness in clinical practice. Front Cardiovasc Med 2024; 11:1336011. [PMID: 38327491 PMCID: PMC10847311 DOI: 10.3389/fcvm.2024.1336011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 01/12/2024] [Indexed: 02/09/2024] Open
Abstract
Advanced heart failure (AdvHF) can only be treated definitively by heart transplantation (HTx), yet problems such right ventricle dysfunction (RVD), rejection, cardiac allograft vasculopathy (CAV), and primary graft dysfunction (PGD) are linked to a poor prognosis. As a result, numerous biomarkers have been investigated in an effort to identify and prevent certain diseases sooner. We looked at both established biomarkers, such as NT-proBNP, hs-troponins, and pro-inflammatory cytokines, and newer ones, such as extracellular vesicles (EVs), donor specific antibodies (DSA), gene expression profile (GEP), donor-derived cell free DNA (dd-cfDNA), microRNA (miRNA), and soluble suppression of tumorigenicity 2 (sST2). These biomarkers are typically linked to complications from HTX. We also highlight the relationships between each biomarker and one or more problems, as well as their applicability in routine clinical practice.
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Affiliation(s)
- L. Martini
- Department of Medical Biotechnology, University of Siena, Siena, Italy
| | - G. E. Mandoli
- Department of Medical Biotechnology, University of Siena, Siena, Italy
| | - M. C. Pastore
- Department of Medical Biotechnology, University of Siena, Siena, Italy
| | - A. Pagliaro
- Cardio-Thoracic-Vascular Department, Siena University Hospital, Siena, Italy
| | - S. Bernazzali
- Cardio-Thoracic-Vascular Department, Siena University Hospital, Siena, Italy
| | - M. Maccherini
- Cardio-Thoracic-Vascular Department, Siena University Hospital, Siena, Italy
| | - M. Henein
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - M. Cameli
- Department of Medical Biotechnology, University of Siena, Siena, Italy
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10
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Dhillon M, Kobashigawa JA, Kittleson M, Jain R, Patel N, Singer-Englar T, Zhang X, Hakimi M, Aintablian T, Vescio R, Dilibero D, Kransdorf E, Czer L, Nikolova AP, Patel JK. Does bortezomib influence pre-transplant desensitization therapy or benefit post-heart transplant outcomes for highly sensitized patients? Clin Transplant 2024; 38:e15165. [PMID: 37837612 DOI: 10.1111/ctr.15165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/19/2023] [Accepted: 10/03/2023] [Indexed: 10/16/2023]
Abstract
BACKGROUND The use of bortezomib which is a proteasome inhibitor has been demonstrated to be efficacious in small number of patients as a desensitization strategy in heart transplant. We reviewed our single center's experience using Bortezomib along with plasmapheresis as desensitization therapy for highly sensitized patients to assess pre- and post-transplant outcomes. METHOD We assessed 43 highly sensitized patients awaiting HTx (defined as cPRA > 50%) between 2010 and 2021 who underwent desensitization therapy with bortezomib. Only those patients who subsequently underwent HTx were included in this study. Enrolled patients received up to four doses of bortezomib (1.3 mg/m2 ) over 2 weeks in conjunction with plasmapheresis. The efficacy of PP/BTZ was assessed by comparing the calculated panel reactive antibodies to HLA class I or class II antigens. Post-transplant outcomes including overall survival and incidence of rejection were compared to those of non-sensitized patients (PRA < 10%, n = 649) from the same center. RESULTS The average cPRA prior to PP/BTZ was 94.5%. Post-PP/BTZ there was no statistically significant decline in mean cPRA, class I cPRA, or class II cPRA, though the average percentage decrease in class I cPRA (8.7 ± 17.0%) was higher than the change in class II cPRA (4.4 ± 13.3%). Resulted were also replicated with C1q-binding antibodies showing more effect on I class compared to class II (15.0 ± 37.4% vs. 6.8 ± 33.6%) as well as with 1:8 dilutional assay (14.0 ± 23.0% vs. 9.1 ± 34.9%). Additionally, PP/BTZ treated patients and the control group of non-sensitized patients had similar overall 1 year survival (95.4 vs. 92.5%) but patients with PP/BTZ had increased incidence of AMR (79.1% vs. 97.1%, p = < .001), any treated rejection (62.8% vs. 86.7%, p = < .001) and de novo DSA development (81.4% vs. 92.5%, p = .007). Major side effects of PP/BTZ included thrombocytopenia (42%), infection requiring antibiotics (28%), and neuropathy (12%). CONCLUSION The use of bortezomib in highly sensitized patients does not significantly lower circulating antibodies prior to heart transplantation. However, its use may improve the chances of obtaining an immuno-compatible donor heart and contribute to acceptable post-transplant outcomes.
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Affiliation(s)
- Manvir Dhillon
- Cedars-Sinai Heart Institute, Los Angeles, California, USA
| | | | | | - Rashmi Jain
- Cedars-Sinai Heart Institute, Los Angeles, California, USA
| | - Nikhil Patel
- Cedars-Sinai Heart Institute, Los Angeles, California, USA
| | | | - Xiaohai Zhang
- Cedars-Sinai Heart Institute, Los Angeles, California, USA
| | - Matthew Hakimi
- Cedars-Sinai Heart Institute, Los Angeles, California, USA
| | | | - Robert Vescio
- Cedars-Sinai Heart Institute, Los Angeles, California, USA
| | | | - Evan Kransdorf
- Cedars-Sinai Heart Institute, Los Angeles, California, USA
| | - Lawrence Czer
- Cedars-Sinai Heart Institute, Los Angeles, California, USA
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11
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Kim PJ, Cusi V, Cardenas A, Tada Y, Vaida F, Wettersten N, Chak J, Bijlani P, Pretorius V, Urey MA, Morris GP, Lin G. Antibody Mediated Rejection is not Associated with Worse Survival in Adherent Heart Transplant Patients in the Contemporary Era. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.12.01.23299311. [PMID: 38106112 PMCID: PMC10723500 DOI: 10.1101/2023.12.01.23299311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Background C4d immunostaining of surveillance endomyocardial biopsies (EMB) and testing for donor specific antibodies (DSA) are routinely performed in the first year of heart transplantation (HTx) in adult patients. C4d and DSA positivity have not been evaluated together with respect to clinical outcomes in the contemporary era (2010-current). Methods This was a single center, retrospective study of consecutive EMBs performed between November 2010 and April 2023. The primary objective was to determine whether history of C4d and/or DSA positivity could predict death, cardiac death, or retransplant. Secondary analyses included cardiac allograft dysfunction and cardiac allograft vasculopathy. Cox proportional hazards models were used for single predictor and multipredictor analyses. Results A total of 6,033 EMBs from 519 HTx patients were reviewed for the study. There was no significant difference (p = 0.110) in all-cause mortality or cardiac retransplant between four groups: C4d+/DSA+, C4d+/DSA-, C4d-/DSA+, and C4d-/DSA-. The risk for cardiac mortality or retransplant was significantly higher in C4d+/DSA+ versus C4d-/DSA- patients (HR = 4.73; pc = 0.042) but not significantly different in C4d+/DSA- versus C4d-/DSA- patients (pc = 1.000). Similarly, the risk for cardiac allograft dysfunction was significantly higher in C4d+/DSA+ versus C4d-/DSA- patients (HR 3.26; pc = 0.001) but not significantly different in C4d+/DSA- versus C4d-/DSA- patients (pc = 1.000). Accounting for nonadherence, C4d/DSA status continued to predict cardiac allograft dysfunction but no longer predicted cardiac death or retransplant. Conclusions Medically adherent C4d+/DSA+ HTx patients show significantly greater risk for cardiac allograft dysfunction but not cardiac mortality or retransplant. In contrast, C4d+/DSA- patients represent a new immunopathologic group with a clinical course similar to that of HTx patients without antibody mediated rejection.
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Affiliation(s)
| | | | - Ashley Cardenas
- Department of Pathology, University of California, San Diego, California, USA
| | | | - Florin Vaida
- Department of Family Medicine and Public Health, UC San Diego, La Jolla, CA
| | - Nicholas Wettersten
- Cardiology Section, Veterans Affairs San Diego Healthcare System, San Diego, CA
| | | | | | - Victor Pretorius
- Division of Cardiovascular and Thoracic Surgery, Department of Surgery, University of California, San Diego, California, USA
| | | | - Gerald P Morris
- Department of Pathology, University of California, San Diego, California, USA
| | - Grace Lin
- Department of Pathology, University of California, San Diego, California, USA
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12
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Marco I, López-Azor García JC, González Martín J, Severo Sánchez A, García-Cosío Carmena MD, Mancebo Sierra E, de Juan Bagudá J, Castrodeza Calvo J, Hernández Pérez FJ, Delgado JF. De Novo Donor-Specific Antibodies after Heart Transplantation: A Comprehensive Guide for Clinicians. J Clin Med 2023; 12:7474. [PMID: 38068526 PMCID: PMC10707043 DOI: 10.3390/jcm12237474] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 11/28/2023] [Accepted: 11/30/2023] [Indexed: 04/12/2024] Open
Abstract
Antibodies directed against donor-specific human leukocyte antigens (HLAs) can be detected de novo after heart transplantation and play a key role in long-term survival. De novo donor-specific antibodies (dnDSAs) have been associated with cardiac allograft vasculopathy, antibody-mediated rejection, and mortality. Advances in detection methods and international guideline recommendations have encouraged the adoption of screening protocols among heart transplant units. However, there is still a lack of consensus about the correct course of action after dnDSA detection. Treatment is usually started when antibody-mediated rejection is present; however, some dnDSAs appear years before graft failure is detected, and at this point, damage may be irreversible. In particular, class II, anti-HLA-DQ, complement binding, and persistent dnDSAs have been associated with worse outcomes. Growing evidence points towards a more aggressive management of dnDSA. For that purpose, better diagnostic tools are needed in order to identify subclinical graft injury. Cardiac magnetic resonance, strain techniques, or coronary physiology parameters could provide valuable information to identify patients at risk. Treatment of dnDSA usually involves plasmapheresis, intravenous immunoglobulin, immunoadsorption, and ritxumab, but the benefit of these therapies is still controversial. Future efforts should focus on establishing effective treatment protocols in order to improve long-term survival of heart transplant recipients.
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Affiliation(s)
- Irene Marco
- Cardiology Department, Hospital Universitario La Paz, 28046 Madrid, Spain;
| | - Juan Carlos López-Azor García
- Cardiology Department, Hospital Universitario Puerta de Hierro, 28222 Madrid, Spain; (J.C.L.-A.G.); (F.J.H.P.)
- Centro Nacional de Investigaciones Biomédicas en Red de Enfermedades CardioVasculares (CIBERCV), 28029 Madrid, Spain; (J.G.M.); (M.D.G.-C.C.); (J.d.J.B.); (J.C.C.)
- School of Medicine, Universidad Europea de Madrid, 28670 Madrid, Spain
| | - Javier González Martín
- Centro Nacional de Investigaciones Biomédicas en Red de Enfermedades CardioVasculares (CIBERCV), 28029 Madrid, Spain; (J.G.M.); (M.D.G.-C.C.); (J.d.J.B.); (J.C.C.)
- Cardiology Department, Hospital Universitario 12 de Octubre, Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), 28041 Madrid, Spain;
| | - Andrea Severo Sánchez
- Cardiology Department, Hospital Universitario 12 de Octubre, Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), 28041 Madrid, Spain;
| | - María Dolores García-Cosío Carmena
- Centro Nacional de Investigaciones Biomédicas en Red de Enfermedades CardioVasculares (CIBERCV), 28029 Madrid, Spain; (J.G.M.); (M.D.G.-C.C.); (J.d.J.B.); (J.C.C.)
- Cardiology Department, Hospital Universitario 12 de Octubre, Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), 28041 Madrid, Spain;
| | - Esther Mancebo Sierra
- Immunology Department, Hospital Universitario 12 de Octubre, Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), 28041 Madrid, Spain;
| | - Javier de Juan Bagudá
- Centro Nacional de Investigaciones Biomédicas en Red de Enfermedades CardioVasculares (CIBERCV), 28029 Madrid, Spain; (J.G.M.); (M.D.G.-C.C.); (J.d.J.B.); (J.C.C.)
- School of Medicine, Universidad Europea de Madrid, 28670 Madrid, Spain
- Cardiology Department, Hospital Universitario 12 de Octubre, Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), 28041 Madrid, Spain;
| | - Javier Castrodeza Calvo
- Centro Nacional de Investigaciones Biomédicas en Red de Enfermedades CardioVasculares (CIBERCV), 28029 Madrid, Spain; (J.G.M.); (M.D.G.-C.C.); (J.d.J.B.); (J.C.C.)
- Cardiology Department, Hospital Universitario Gregorio Marañón, 28007 Madrid, Spain
| | | | - Juan Francisco Delgado
- Centro Nacional de Investigaciones Biomédicas en Red de Enfermedades CardioVasculares (CIBERCV), 28029 Madrid, Spain; (J.G.M.); (M.D.G.-C.C.); (J.d.J.B.); (J.C.C.)
- Cardiology Department, Hospital Universitario 12 de Octubre, Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), 28041 Madrid, Spain;
- School of Medicine, Universidad Complutense de Madrid, 28040 Madrid, Spain
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13
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Webber SA, Chin H, Wilkinson JD, Armstrong BD, Canter CE, Dipchand AI, Dodd DA, Feingold B, Lamour JM, Mahle WT, Singh TP, Zuckerman WA, Rossano JW, Morrison Y, Diop H, Demetris AJ, Bentlejewski C, Mohanakumar T, Odim J, Zeevi A. Impact of donor-specific anti-HLA antibody on cardiac hemodynamics and graft function 3 years after pediatric heart transplantation: First results from the CTOTC-09 multi-institutional study. Am J Transplant 2023; 23:1893-1907. [PMID: 37579817 PMCID: PMC10841212 DOI: 10.1016/j.ajt.2023.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 07/19/2023] [Accepted: 08/06/2023] [Indexed: 08/16/2023]
Abstract
The aim of this study (CTOTC-09) was to assess the impact of "preformed" (at transplant) donor-specific anti-HLA antibody (DSA) and first year newly detected DSA (ndDSA) on allograft function at 3 years after pediatric heart transplantation (PHTx). We enrolled children listed at 9 North American centers. The primary end point was pulmonary capillary wedge pressure (PCWP) at 3 years posttransplant. Of 407 enrolled subjects, 370 achieved PHTx (mean age, 7.7 years; 57% male). Pre-PHTx sensitization status was nonsensitized (n = 163, 44%), sensitized/no DSA (n = 115, 31%), sensitized/DSA (n = 87, 24%), and insufficient DSA data (n = 5, 1%); 131 (35%) subjects developed ndDSA. Subjects with any DSA had comparable PCWP at 3 years to those with no DSA. There were also no significant differences overall between the 2 groups for other invasive hemodynamic measurements, systolic graft function by echocardiography, and serum brain natriuretic peptide concentration. However, in the multivariable analysis, persistent first-year DSA was a risk factor for 3-year abnormal graft function. Graft and patient survival did not differ between groups. In summary, overall, DSA status was not associated with worse allograft function or inferior patient and graft survival at 3 years, but persistent first-year DSA was a risk factor for late graft dysfunction.
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Affiliation(s)
- Steven A Webber
- Department of Pediatrics, Vanderbilt University School of Medicine, Vanderbilt, Nashville, Tennessee, USA.
| | - Hyunsook Chin
- Rho Federal Systems Division, Durham, North Carolina, USA
| | - James D Wilkinson
- Department of Pediatrics, Vanderbilt University School of Medicine, Vanderbilt, Nashville, Tennessee, USA
| | | | - Charles E Canter
- Division of Pediatric Cardiology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Anne I Dipchand
- Labatt Family Heart Center, Department of Paediatrics, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Debra A Dodd
- Department of Pediatrics, Vanderbilt University School of Medicine, Vanderbilt, Nashville, Tennessee, USA
| | - Brian Feingold
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Jacqueline M Lamour
- Division of Pediatric Cardiology, Children's Hospital at Montefiore, Bronx, New York, USA
| | - William T Mahle
- Division of Pediatric Cardiology, Children's Healthcare of Atlanta, Atlanta, Georgia, USA
| | - Tajinder P Singh
- Department of Pediatric Cardiology, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Warren A Zuckerman
- Division of Pediatric Cardiology, Columbia University Medical Center, New York, New York, USA
| | - Joseph W Rossano
- Division of Pediatric Cardiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Yvonne Morrison
- Transplantation Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Helena Diop
- Transplantation Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Anthony J Demetris
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Carol Bentlejewski
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | | | - Jonah Odim
- Transplantation Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Adriana Zeevi
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
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14
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Mehlman Y, Valledor AF, Moeller C, Rubinstein G, Lotan D, Rahman S, Oh KT, Bae D, DeFilippis EM, Lin EF, Lee SH, Raikhelkar JK, Fried J, Theodoropoulos K, Colombo PC, Yuzefpolskaya M, Latif F, Clerkin KJ, Sayer GT, Uriel N. The utilization of molecular microscope in management of heart transplant recipients in the era of noninvasive monitoring. Clin Transplant 2023; 37:e15131. [PMID: 37897211 DOI: 10.1111/ctr.15131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 09/03/2023] [Accepted: 09/06/2023] [Indexed: 10/29/2023]
Abstract
INTRODUCTION Monitoring for graft rejection is a fundamental tenet of post-transplant follow-up. In heart transplantation (HT) in particular, rejection has been traditionally assessed with endomyocardial biopsy (EMB). EMB has potential complications and noted limitations, including interobserver variability in interpretation. Additional tests, such as basic cardiac biomarkers, cardiac imaging, gene expression profiling (GEP) scores, donor-derived cell-free DNA (dd-cfDNA) and the novel molecular microscope diagnostic system (MMDx) have become critical tools in rejection surveillance beyond standard EMB. METHODS This paper describes an illustrative case followed by a review of MMDx within the context of other noninvasive screening modalities for rejection. CONCLUSIONS We suggest MMDx be used to assist with early detection of rejection in cases of discordance between EMB and other noninvasive studies.
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Affiliation(s)
- Yonatan Mehlman
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Andrea Fernendez Valledor
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Cathrine Moeller
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Gal Rubinstein
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Dor Lotan
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Salwa Rahman
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Kyung T Oh
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - David Bae
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Ersilia M DeFilippis
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Edward F Lin
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Sun Hi Lee
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Jayant K Raikhelkar
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Justin Fried
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Kleanthis Theodoropoulos
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Paolo C Colombo
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Melana Yuzefpolskaya
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Farhana Latif
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Kevin J Clerkin
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Gabriel T Sayer
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Nir Uriel
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
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15
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Battle R, Pritchard D, Peacock S, Hastie C, Worthington J, Jordan S, McCaughlan JA, Barnardo M, Cope R, Collins C, Diaz-Burlinson N, Rosser C, Foster L, Kallon D, Shaw O, Briggs D, Turner D, Anand A, Akbarzad-Yousefi A, Sage D. BSHI and BTS UK guideline on the detection of alloantibodies in solid organ (and islet) transplantation. Int J Immunogenet 2023; 50 Suppl 2:3-63. [PMID: 37919251 DOI: 10.1111/iji.12641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 10/04/2023] [Indexed: 11/04/2023]
Abstract
Solid organ transplantation represents the best (and in many cases only) treatment option for patients with end-stage organ failure. The effectiveness and functioning life of these transplants has improved each decade due to surgical and clinical advances, and accurate histocompatibility assessment. Patient exposure to alloantigen from another individual is a common occurrence and takes place through pregnancies, blood transfusions or previous transplantation. Such exposure to alloantigen's can lead to the formation of circulating alloreactive antibodies which can be deleterious to solid organ transplant outcome. The purpose of these guidelines is to update to the previous BSHI/BTS guidelines 2016 on the relevance, assessment, and management of alloantibodies within solid organ transplantation.
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Affiliation(s)
- Richard Battle
- Scottish National Blood Transfusion Service, Edinburgh, UK
| | | | - Sarah Peacock
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | | | | | - Sue Jordan
- National Blood Service Tooting, London, UK
| | | | - Martin Barnardo
- Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Rebecca Cope
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | | | | | | | - Luke Foster
- Birmingham Blood Donor Centre, Birmingham, UK
| | | | - Olivia Shaw
- Guy's and St Thomas' NHS Foundation Trust, London, UK
| | | | - David Turner
- Scottish National Blood Transfusion Service, Edinburgh, UK
| | - Arthi Anand
- Imperial College Healthcare NHS Trust, London, UK
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16
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Yim WY, Xiong T, Geng B, Xu L, Feng Y, Chi J, Guo R, Li C, Chen Y, Shi J, Wang Y, Dong N. Donor circadian clock influences the long-term survival of heart transplantation by immunoregulation. Cardiovasc Res 2023; 119:2202-2212. [PMID: 37517007 DOI: 10.1093/cvr/cvad114] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 03/13/2023] [Accepted: 04/10/2023] [Indexed: 08/01/2023] Open
Abstract
AIMS Circadian clocks play important role in immunoregulation. We aimed to investigate cardiac circadian clock specific pathways and compare cardiac grafts procured at different timing on survival after transplantation to explore novel criteria for donor selection. METHODS AND RESULTS In primate heart, phase set enrichment analysis (PSEA) showed rhythmic transcripts were enriched in antigen processing and presentation during activation of circadian rhythm. Digital sorting of immune cell composition and single-sample gene set enrichment analysis (ssGSEA) in unused donor transcriptomes showed the pathway, positive regulation of circadian rhythm significantly correlates with allograft rejection and antigen presentation pathways as well as with increased compositions of matured dendritic cell, CD4+ T cell, and naive B cell. Single-centre retrospective cohort of 390 adult heart transplants between 1 January 2015 and 31 December 2020 was used to generate a propensity score matching (PSM) cohort. Survival curve differed significantly showing inferior long-term survival when donor hearts were procured at activation group (12 pm to 12 am) compared to repression group (12 am to 12 pm) (6-year survival: 64.2% vs. 75.8%, P = 0.0065). Activation group was also associated with significantly higher rates of in-hospital death, cardiopulmonary resuscitation, and usage of mechanical circulatory support after heart transplantation compared to repression group. Furthermore, tendency for post-transplant free of rejection rates was higher in repression group compared to activation group (acute rejection, Gehan-Breslow P = 0.11 and 0.04; chronic rejection, Log rank P = 0.077 and 0.15, in full and PSM cohorts, respectively). Adjusted Cox regression analysis showed that activation group was associated with 2.20 times increased hazard of death (hazard ratio: 2.20; 95% confidence interval: 1.23-3.95; P = 0.008) compared to repression group. CONCLUSIONS Circadian immunity may represent donor-related risk factors for cardiac allograft rejection through activating genes related to antigen presentation pathway and immune cells oscillation at specific time of day. Molecular circadian clock should be considered during retrieval of cardiac allografts in order to maximize graft durability.
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Affiliation(s)
- Wai Yen Yim
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1277, Jiefang Avenue, Wuhan 430022, PRChina
| | - Tixiusi Xiong
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1277, Jiefang Avenue, Wuhan 430022, PRChina
| | - Bingchuan Geng
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1277, Jiefang Avenue, Wuhan 430022, PRChina
| | - Li Xu
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1277, Jiefang Avenue, Wuhan 430022, PRChina
| | - Yu Feng
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1277, Jiefang Avenue, Wuhan 430022, PRChina
| | - Jiangyang Chi
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1277, Jiefang Avenue, Wuhan 430022, PRChina
| | - Ruikang Guo
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1277, Jiefang Avenue, Wuhan 430022, PRChina
| | - Chenghao Li
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1277, Jiefang Avenue, Wuhan 430022, PRChina
| | - Yuqi Chen
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1277, Jiefang Avenue, Wuhan 430022, PRChina
| | - Jiawei Shi
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1277, Jiefang Avenue, Wuhan 430022, PRChina
| | - Yixuan Wang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1277, Jiefang Avenue, Wuhan 430022, PRChina
- Key Laboratory of Organ Transplantation, Ministry of Education, Chinese Academy of Medical Sciences, Wuhan, China
- NHC Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China
- Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China
| | - Nianguo Dong
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1277, Jiefang Avenue, Wuhan 430022, PRChina
- Key Laboratory of Organ Transplantation, Ministry of Education, Chinese Academy of Medical Sciences, Wuhan, China
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17
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Nesseler N, Mansour A, Cholley B, Coutance G, Bouglé A. Perioperative Management of Heart Transplantation: A Clinical Review. Anesthesiology 2023; 139:493-510. [PMID: 37458995 DOI: 10.1097/aln.0000000000004627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
In this clinical review, the authors summarize the perioperative management of heart transplant patients with a focus on hemodynamics, immunosuppressive strategies, hemostasis and hemorrage, and the prevention and treatment of infectious complications.
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Affiliation(s)
- Nicolas Nesseler
- Department of Anesthesia and Critical Care, Pontchaillou, University Hospital of Rennes, France; National Institute of Health and Medical Research, Center of Clinical Investigation, Nutrition, Metabolism, Cancer Mixed Research Unit, University Hospital Federation Survival Optimization in Organ Transplantation, Rennes, France
| | - Alexandre Mansour
- Department of Anesthesia and Critical Care, Pontchaillou, University Hospital of Rennes, France; National Institute of Health and Medical Research, Center of Clinical Investigation, Nutrition, Research Institute for Environmental and Occupational Health Mixed Research Unit, Rennes, France
| | - Bernard Cholley
- Department of Anesthesiology and Intensive Care Medicine, European Hospital Georges Pompidou, Public Hospitals of Paris, Paris, France; Paris Cité University, National Institute of Health and Medical Research Mixed Research Unit, Paris, France
| | - Guillaume Coutance
- Sorbonne University, Public Hospitals of Paris, Department of Cardiac and Thoracic Surgery, Cardiology Institute, Pitié-Salpêtrière Hospital, Paris, France
| | - Adrien Bouglé
- Sorbonne University, Clinical Research Group in Anesthesia, Resuscitation, and Perioperative Medicine, Public Hospitals of Paris, Department of Anesthesiology and Critical Care, Cardiology Institute, Pitié-Salpêtrière Hospital, Paris, France
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18
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Kaskinen AK, Tainio J, Pihkala JI, Peräsaari JP, Lauronen J, Raissadati A, Merenmies JM, Jalanko HJ, Jahnukainen T. Recurrent Mild Acute Rejections and Donor-specific Antibodies as Risk Factors for Cardiac Allograft Vasculopathy in a National Pediatric Heart Transplant Cohort. Transplant Direct 2023; 9:e1534. [PMID: 37745950 PMCID: PMC10513139 DOI: 10.1097/txd.0000000000001534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 07/24/2023] [Indexed: 09/26/2023] Open
Abstract
Background Immune-mediated factors such as acute cellular rejections and donor-specific antibodies (DSAs) are risk factors for cardiac allograft vasculopathy (CAV). We studied a national cohort with a unified setting and thorough protocol endomyocardial biopsy (EMB) data for an association between cellular rejections, especially when mild and recurrent, and DSAs with CAV in pediatric heart transplant (HTx) patients. Methods This is a retrospective, national cohort study of 94 pediatric HTxs performed between 1991 and 2019 and followed until December 31, 2020. Diagnosis of CAV was based on reevaluation of angiographies. Protocol and indication EMB findings with other patient data were collected from medical records. Associations between nonimmune and immune-mediated factors and CAV were analyzed with univariable and multivariable Cox regression analyses. Results Angiographies performed on 76 patients revealed CAV in 23 patients (30%). Altogether 1138 EMBs (92% protocol biopsies) were performed on 78 patients (83%). During the first posttransplant year, grade 1 rejection (G1R) appeared in 45 patients (58%), and recurrent (≥2) G1R findings in 14 patients (18%). Pretransplant DSAs occurred in 13 patients (17%) and posttransplant DSAs in 37 patients (39%). In univariable analysis, pretransplant DSAs, appearance and recurrence of G1R findings, and total rejection score during the first posttransplant year, as well as recurrent G1R during follow-up, were all associated with CAV. In multivariable analysis, pretransplant DSAs and recurrent G1R during the first posttransplant year were found to be associated with CAV. Conclusions Our results indicate that pretransplant DSA and recurrent G1R findings, especially during the first posttransplant year, are associated with CAV after pediatric HTx.
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Affiliation(s)
- Anu K. Kaskinen
- Department of Pediatric Nephrology and Transplantation, New Children’s Hospital, Pediatric Research Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Juuso Tainio
- Department of Pediatric Nephrology and Transplantation, New Children’s Hospital, Pediatric Research Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Jaana I. Pihkala
- Department of Pediatric Cardiology, New Children’s Hospital, Pediatric Research Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Juha P. Peräsaari
- Finnish Red Cross Blood Service, Histocompatibility Laboratory, Helsinki, Finland
| | - Jouni Lauronen
- Finnish Red Cross Blood Service, Histocompatibility Laboratory, Helsinki, Finland
| | - Alireza Raissadati
- Division of Cardiology, Department of Pediatrics, Stanford School of Medicine, Helsinki, Finland
| | - Jussi M. Merenmies
- Department of Pediatric Nephrology and Transplantation, New Children’s Hospital, Pediatric Research Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Hannu J. Jalanko
- Department of Pediatric Nephrology and Transplantation, New Children’s Hospital, Pediatric Research Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Timo Jahnukainen
- Department of Pediatric Nephrology and Transplantation, New Children’s Hospital, Pediatric Research Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
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19
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Wright LK, Gajarski RJ. Two sides of the same coin: Balancing the risks of rejection and infection in transplanted Fontan patients with dysregulated pretransplant immune function. Pediatr Transplant 2023; 27:e14457. [PMID: 36591864 DOI: 10.1111/petr.14457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 11/11/2022] [Indexed: 01/03/2023]
Affiliation(s)
- Lydia K Wright
- Division of Cardiology, The Heart Center, Nationwide Children's Hospital, Columbus, Ohio, USA
- Department of Pediatrics, The Ohio State University, Columbus, Ohio, USA
| | - Robert J Gajarski
- Division of Cardiology, The Heart Center, Nationwide Children's Hospital, Columbus, Ohio, USA
- Department of Pediatrics, The Ohio State University, Columbus, Ohio, USA
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20
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Kobashigawa J, Hall S, Shah P, Fine B, Halloran P, Jackson AM, Khush KK, Margulies KB, Sani MM, Patel JK, Patel N, Peyster E. The evolving use of biomarkers in heart transplantation: Consensus of an expert panel. Am J Transplant 2023; 23:727-735. [PMID: 36870390 PMCID: PMC10387364 DOI: 10.1016/j.ajt.2023.02.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 02/24/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023]
Abstract
In heart transplantation, the use of biomarkers to detect the risk of rejection has been evolving. In this setting, it is becoming less clear as to what is the most reliable test or combination of tests to detect rejection and assess the state of the alloimmune response. Therefore, a virtual expert panel was organized in heart and kidney transplantation to evaluate emerging diagnostics and how they may be best utilized to monitor and manage transplant patients. This manuscript covers the heart content of the conference and is a work product of the American Society of Transplantation's Thoracic and Critical Care Community of Practice. This paper reviews currently available and emerging diagnostic assays and defines the unmet needs for biomarkers in heart transplantation. Highlights of the in-depth discussions among conference participants that led to development of consensus statements are included. This conference should serve as a platform to further build consensus within the heart transplant community regarding the optimal framework to implement biomarkers into management protocols and to improve biomarker development, validation and clinical utility. Ultimately, these biomarkers and novel diagnostics should improve outcomes and optimize quality of life for our transplant patients.
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Affiliation(s)
- Jon Kobashigawa
- Department of Cardiology, Cedars-Sinai Smidt Heart Institute, Los Angeles, California, USA.
| | - Shelley Hall
- Department of Cardiology, Baylor University Medical Center, Dallas, Texas, USA
| | - Palak Shah
- Department of Cardiology, Inova Heart and Vascular Institute, Falls Church, Virginia, USA
| | - Barry Fine
- Department of Cardiology, Columbia University Irving Medical Center, New York, USA
| | - Phil Halloran
- Department of Medicine Division of Nephrology, University of Alberta, Edmonton, Canada
| | - Annette M Jackson
- Department of Surgery, Duke University, Durham, North Carolina, USA; Department of Immunology, Duke University, Durham, North Carolina, USA
| | - Kiran K Khush
- Department of Medicine, Stanford University, Stanford, California, USA
| | - Kenneth B Margulies
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Maryam Mojarrad Sani
- Department of Cardiology, Cedars-Sinai Smidt Heart Institute, Los Angeles, California, USA
| | - Jignesh K Patel
- Department of Cardiology, Cedars-Sinai Smidt Heart Institute, Los Angeles, California, USA
| | - Nikhil Patel
- Department of Cardiology, Cedars-Sinai Smidt Heart Institute, Los Angeles, California, USA
| | - Eliot Peyster
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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21
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Saldan A, Mengoli C, Sgarabotto D, Fedrigo M, Angelini A, Feltrin G, Gambino A, Gerosa G, Barzon L, Abate D. Human cytomegalovirus and Epstein-Barr virus infections occurring early after transplantation are risk factors for antibody-mediated rejection in heart transplant recipients. Front Immunol 2023; 14:1171197. [PMID: 37256129 PMCID: PMC10225529 DOI: 10.3389/fimmu.2023.1171197] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 04/25/2023] [Indexed: 06/01/2023] Open
Abstract
Background Antibody-mediated rejection (AMR) is a serious complication affecting the survival of patients receiving transplantation. Human cytomegalovirus (CMV) and Epstein-Barr virus (EBV) are common viral infections that occur after transplantation, frequently emerging as viral reactivation in donor grafts or transplant recipients. The present study aimed to investigate the association between CMV and EBV infections and early-onset AMR. Materials and methods This study was conducted at the Heart Transplantation Center of Padova General Hospital and included a cohort of 47 heart transplant recipients (HTxs), including 24 HTxs diagnosed with AMR and 23 control HTxs with no episodes of AMR. Only early cases of CMV and/or EBV infections (1-90 days after transplantation) were considered. Fisher's exact test and logistic regression analysis were used to statistically analyze the correlation and association between AMR and CMV or EBV infection. Results We observed a positive statistical association between CMV and EBV infections (two-sided Fisher's exact test, p = 0.0136) and between EBV infection and AMR (two-sided Fisher's exact test, p = 0.0034). Logistic regression analysis revealed a direct statistical association between CMV and EBV infections and AMR risk (p = 0.037 and 0.006 and odds ratio = 1.72 and 2.19, respectively). AMR occurrence was associated with increased viral loads of both CMV and EBV early after transplantation. Discussion These findings suggest the role of CMV and EBV infections as relevant risk factors for AMR in HTxs for the first time.
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Affiliation(s)
- Alda Saldan
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Carlo Mengoli
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Dino Sgarabotto
- Transplant Infectious Disease Unit, Padova General Hospital, Padova, Italy
| | - Marny Fedrigo
- Department of Cardiothoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Annalisa Angelini
- Department of Cardiothoracic and Vascular Sciences, University of Padova, Padova, Italy
| | | | - Antonio Gambino
- Department of Cardiothoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Gino Gerosa
- Department of Cardiothoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Luisa Barzon
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Davide Abate
- Department of Molecular Medicine, University of Padova, Padova, Italy
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22
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Akhtar W, Peterzan MA, Banya W, Olwell B, Aghouee FV, Brookes P, Dunning J, Dar O. Donor specific antibodies association with survival and adverse events after heart transplantation: A single center retrospective study between 2006 and 2021. Clin Transplant 2023; 37:e14914. [PMID: 36630276 DOI: 10.1111/ctr.14914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 12/23/2022] [Accepted: 01/08/2023] [Indexed: 01/12/2023]
Abstract
OBJECTIVE Newly detected donor HLA-specific antibodies (DSA) are historically known to be associated with reduced survival in heart transplant patients. Our objective is to clarify the modern incidence of DSA and determine its relationship with survival and MACE. METHODS This retrospective study included all patients undergoing orthotopic heart transplantation at Harefield Hospital, London between January 1, 2006 and May 31, 2021. We identified patients who developed DSA at any point post heart transplantation and its effect on survival and MACE (defined as rejection, coronary event, stroke, and arrhythmia. RESULTS In total of 232 patients were included with a median follow up time of 4.7 years post heart transplantation. 23.7% of patients included developed DSA post heart transplantation. There was a significantly increased risk of death in patients developing DSA versus not (sub distribution hazard ratio [SHR] 1.83, 95% confidence interval 1.03-3.24, p = .04). At the time of detection of DSA, 38.2% of the cohort had rejection necessitating treatment. A MACE event had occurred in 48.1% by 2 years and 53.7% by 3 years in the DSA cohort. There was a significantly increased risk of MACE in patients developing DSA versus not (SHR 2.48 [1.58-3.89, p < .0001]). CONCLUSIONS This study showed an increased risk of death and MACE in patients developing DSA post heart transplantation. Further research is required into the optimal management of these patients.
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Affiliation(s)
- Waqas Akhtar
- Department of Advanced Heart Failure, Transplantation and Mechanical Support, Harefield Hospital, Harefield, UK
| | - Mark A Peterzan
- Department of Advanced Heart Failure, Transplantation and Mechanical Support, Harefield Hospital, Harefield, UK
| | - Winston Banya
- Department of Advanced Heart Failure, Transplantation and Mechanical Support, Harefield Hospital, Harefield, UK
| | - Brian Olwell
- Department of Advanced Heart Failure, Transplantation and Mechanical Support, Harefield Hospital, Harefield, UK
| | - Farveh Vakilian Aghouee
- Department of Advanced Heart Failure, Transplantation and Mechanical Support, Harefield Hospital, Harefield, UK
| | - Paul Brookes
- Department of Advanced Heart Failure, Transplantation and Mechanical Support, Harefield Hospital, Harefield, UK
| | - John Dunning
- Department of Advanced Heart Failure, Transplantation and Mechanical Support, Harefield Hospital, Harefield, UK
| | - Owais Dar
- Department of Advanced Heart Failure, Transplantation and Mechanical Support, Harefield Hospital, Harefield, UK
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23
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Magnetta DA, Hoch VL, Pinelli D, Monge M, Pahl E, Thrush PT. Donor-specific antibodies after heart transplantation for Fontan-associated protein-losing enteropathy. Pediatr Transplant 2023:e14458. [PMID: 36591815 DOI: 10.1111/petr.14458] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 08/22/2022] [Accepted: 10/04/2022] [Indexed: 01/03/2023]
Abstract
BACKGROUND Despite ubiquitous exposure to sensitizing events, most Fontan PLE patients have low panel reactive antibodies (PRA). To assess whether they are at risk for donor-specific antibody (DSA) memory response following heart transplantation (HT) when their PLE resolves, DSA profiles, incidence of rejection, and graft outcomes in Fontan recipients with and without PLE were compared. METHODS Patient characteristics, appearance of newly detected DSA (nDSA), and graft outcomes were compared between patients with and without PLE using Wilcoxon rank-sum and Chi-squared tests. DSA burden was quantified using titers and time to nDSA, incidence of rejection, and graft outcomes were compared using Kaplan-Meier curves and the log-rank test. RESULTS Characteristics of patients with and without PLE were similar. Lymphocyte and albumin levels were lower in the PLE group, and flow PRA were comparable. Graft failure, CAV, and ACR were similar between the two groups, but AMR occurred more frequently in the PLE group (p = .03). Nearly 50% of PLE patients experienced class II nDSA by 1-year post-HT, compared to 30% of non-PLE patients, but this difference was statistically not significant. Antibody burden did not differ between groups. CONCLUSIONS In this cohort, PLE was associated with AMR within the first-year post-HT, despite no significant difference in nDSA. Small patient numbers limited statistical comparison of nDSA in this cohort. PLE may be a risk factor for AMR post-HT, and the possibility of a clinically important DSA memory response remains. Larger studies are necessary to better understand these preliminary findings.
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Affiliation(s)
- Defne A Magnetta
- Pediatric Cardiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
| | - Virginia L Hoch
- Internal Medicine-Pediatrics, ChristianaCare Health System, Newark, Delaware, USA
| | - David Pinelli
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Michael Monge
- Pediatric Cardiothoracic Surgery, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
| | - Elfriede Pahl
- Pediatric Cardiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
| | - Philip T Thrush
- Pediatric Cardiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
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24
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Li C, Wang G. Liquid Biopsy, a Potential New Detection Method in Heart Allograft Rejection. Methods Mol Biol 2023; 2695:309-315. [PMID: 37450128 DOI: 10.1007/978-1-0716-3346-5_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
Allografts rejection remains the most important reason causing allograft dysfunction in heart transplantation recipients. Currently, the golden standard for detecting graft rejection is endomyocardial biopsy (EMB). As a new noninvasive technique, liquid biopsy emerges along with the great developments of droplet-based digital PCR and the various optimizations of next-generation sequencing technologies, which is also cheaper than EMB. This review introduces several types of liquid biopsy and its application in heart transplantation.
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Affiliation(s)
- Chenghao Li
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guohua Wang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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25
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Clinical recommendations for posttransplant assessment of anti-HLA (Human Leukocyte Antigen) donor-specific antibodies: A Sensitization in Transplantation: Assessment of Risk consensus document. Am J Transplant 2023; 23:115-132. [PMID: 36695614 DOI: 10.1016/j.ajt.2022.11.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 10/29/2022] [Accepted: 11/04/2022] [Indexed: 01/13/2023]
Abstract
Although anti-HLA (Human Leukocyte Antigen) donor-specific antibodies (DSAs) are commonly measured in clinical practice and their relationship with transplant outcome is well established, clinical recommendations for anti-HLA antibody assessment are sparse. Supported by a careful and critical review of the current literature performed by the Sensitization in Transplantation: Assessment of Risk 2022 working group, this consensus report provides clinical practice recommendations in kidney, heart, lung, and liver transplantation based on expert assessment of quality and strength of evidence. The recommendations address 3 major clinical problems in transplantation and include guidance regarding posttransplant DSA assessment and application to diagnostics, prognostics, and therapeutics: (1) the clinical implications of positive posttransplant DSA detection according to DSA status (ie, preformed or de novo), (2) the relevance of posttransplant DSA assessment for precision diagnosis of antibody-mediated rejection and for treatment management, and (3) the relevance of posttransplant DSA for allograft prognosis and risk stratification. This consensus report also highlights gaps in current knowledge and provides directions for clinical investigations and trials in the future that will further refine the clinical utility of posttransplant DSA assessment, leading to improved transplant management and patient care.
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26
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Jaiswal A, Bell J, DeFilippis EM, Kransdorf EP, Patel J, Kobashigawa JA, Kittleson MM, Baran DA. Assessment and management of allosensitization following heart transplant in adults. J Heart Lung Transplant 2022; 42:423-432. [PMID: 36702686 DOI: 10.1016/j.healun.2022.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/29/2022] [Accepted: 12/12/2022] [Indexed: 12/24/2022] Open
Abstract
Immunological injury to the allograft, specifically by antibodies to de novo donor specific human leukocyte antigen (dnDSA) and antibody mediated injury and rejection are the major limitations to graft survival after heart transplantation (HT). As such, our approach to allosensitization remains limited by the inability of contemporaneous immunoassays to unravel pathogenic potential of dnDSA. Additionally, the role of dnDSA is continuously evaluated with emerging methods to detect rejection. Moreover, the timing and frequency of dnDSA monitoring for early detection and risk mitigation as well as management of dnDSA remain challenging. A strategic approach to dnDSA employs diagnostic assays to determine relevant antibodies in conjunction with clinical presentation and injury/rejection of allograft to tailor therapeutics. In this review, we aim to outline contemporary knowledge involving detection, monitoring and management of dnDSA after HT. Subsequently, we propose a diagnostic and therapeutic approach that may mitigate morbidity and mortality while balancing adverse reactions from pharmacotherapy.
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Affiliation(s)
- Abhishek Jaiswal
- Hartford HealthCare Heart and Vascular Institute, Hartford Hospital, Hartford, Connecticut.
| | - Jennifer Bell
- Hartford HealthCare Heart and Vascular Institute, Hartford Hospital, Hartford, Connecticut
| | - Ersilia M DeFilippis
- Division of Cardiology, Department of Medicine, Columbia University Medical Center, New York, New York
| | - Evan P Kransdorf
- Division of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Jignesh Patel
- Division of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Jon A Kobashigawa
- Division of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Michelle M Kittleson
- Division of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - David A Baran
- Cleveland Clinic, Heart, Vascular and Thoracic Institute, Advanced Heart Failure Program, Weston, Florida
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27
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Velleca A, Shullo MA, Dhital K, Azeka E, Colvin M, DePasquale E, Farrero M, García-Guereta L, Jamero G, Khush K, Lavee J, Pouch S, Patel J, Michaud CJ, Shullo M, Schubert S, Angelini A, Carlos L, Mirabet S, Patel J, Pham M, Urschel S, Kim KH, Miyamoto S, Chih S, Daly K, Grossi P, Jennings D, Kim IC, Lim HS, Miller T, Potena L, Velleca A, Eisen H, Bellumkonda L, Danziger-Isakov L, Dobbels F, Harkess M, Kim D, Lyster H, Peled Y, Reinhardt Z. The International Society for Heart and Lung Transplantation (ISHLT) Guidelines for the Care of Heart Transplant Recipients. J Heart Lung Transplant 2022; 42:e1-e141. [PMID: 37080658 DOI: 10.1016/j.healun.2022.10.015] [Citation(s) in RCA: 108] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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28
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COVID-19 in orthotopic heart transplant recipients and association with donor specific antibodies. Transpl Immunol 2022; 75:101712. [PMID: 36100195 PMCID: PMC9464271 DOI: 10.1016/j.trim.2022.101712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 09/07/2022] [Indexed: 12/01/2022]
Abstract
De novo donor-specific antibodies (DSAs) are associated with increased risk of antibody-mediated rejection and worse clinical outcomes after orthotopic heart transplant (OHT). No study has reported the production of DSAs after infection by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) in an OHT population. In this retrospective study, we described coronavirus disease 2019 (COVID-19) incidence and clinical course in a large, contemporary OHT cohort. We showed that the case-fatality rate has significantly decreased since the early days of the pandemic, although remains higher than that of the general population. In addition, we found that 10% of OHT recipients developed de novo DSAs or experienced an increase in pre-existing DSAs after COVID-19, with the majority occurring in unvaccinated patients (15% vs 2%). Further studies are necessary to substantiate our findings in an external cohort.
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29
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Velleca A, Shullo MA, Dhital K, Azeka E, Colvin M, DePasquale E, Farrero M, García-Guereta L, Jamero G, Khush K, Lavee J, Pouch S, Patel J, Michaud CJ, Shullo M, Schubert S, Angelini A, Carlos L, Mirabet S, Patel J, Pham M, Urschel S, Kim KH, Miyamoto S, Chih S, Daly K, Grossi P, Jennings D, Kim IC, Lim HS, Miller T, Potena L, Velleca A, Eisen H, Bellumkonda L, Danziger-Isakov L, Dobbels F, Harkess M, Kim D, Lyster H, Peled Y, Reinhardt Z. The International Society for Heart and Lung Transplantation (ISHLT) Guidelines for the Care of Heart Transplant Recipients. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.09.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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30
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Yamamoto T, Pearson DS, Ababneh EI, Harris C, Nissaisorakarn P, Mahowald GK, Heher YK, Elias N, Markmann JF, Lewis GD, Riella LV. Case report: Successful simultaneous heart-kidney transplantation across a positive complement-dependent cytotoxic crossmatch. FRONTIERS IN NEPHROLOGY 2022; 2:1047217. [PMID: 37675007 PMCID: PMC10479575 DOI: 10.3389/fneph.2022.1047217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 11/11/2022] [Indexed: 09/08/2023]
Abstract
Preformed donor-specific antibodies are associated with a higher risk of rejection and worse graft survival in organ transplantation. However, in heart transplantation, the risk and benefit balance between high mortality on the waiting list and graft survival may allow the acceptance of higher immunologic risk donors in broadly sensitized recipients. Transplanting donor-recipient pairs with a positive complement dependent cytotoxic (CDC) crossmatch carries the highest risk of hyperacute rejection and immediate graft loss and is usually avoided in kidney transplantation. Herein we report the first successful simultaneous heart-kidney transplant with a T- and B-cell CDC crossmatch positive donor using a combination of rituximab, intravenous immunoglobulin, plasmapheresis, bortezomib and rabbit anti-thymocyte globulin induction followed by eculizumab therapy for two months post-transplant. In the year following transplantation, both allografts maintained stable graft function (all echocardiographic left ventricular ejection fractions ≥ 65%, eGFR>60) and showed no histologic evidence of antibody-mediated rejection. In addition, the patient has not developed any severe infections including cytomegalovirus or BK virus infection. In conclusion, a multitarget immunosuppressive regimen can allow for combined heart/kidney transplantation across positive CDC crossmatches without evidence of antibody-mediated rejection or significant infection. Longer follow-up will be needed to further support this conclusion.
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Affiliation(s)
- Takayuki Yamamoto
- Center for Transplantation Sciences, Massachusetts General Hospital/Harvard Medical School, Boston, MA, United States
- Department of Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA, United States
| | - Daniel S. Pearson
- Histocompatibility Laboratory, Department of Pathology, Massachusetts General Hospital, Boston, MA, United States
- Department of Pathology, Massachusetts General Hospital, Boston, MA, United States
| | - Emad I. Ababneh
- Department of Pathology, Massachusetts General Hospital, Boston, MA, United States
| | - Cynthia Harris
- Department of Pathology, Massachusetts General Hospital, Boston, MA, United States
| | - Pitchaphon Nissaisorakarn
- Center for Transplantation Sciences, Massachusetts General Hospital/Harvard Medical School, Boston, MA, United States
- Division of Nephrology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, United States
| | - Grace K. Mahowald
- Center for Transplantation Sciences, Massachusetts General Hospital/Harvard Medical School, Boston, MA, United States
- Histocompatibility Laboratory, Department of Pathology, Massachusetts General Hospital, Boston, MA, United States
- Department of Pathology, Massachusetts General Hospital, Boston, MA, United States
| | - Yael K. Heher
- Center for Transplantation Sciences, Massachusetts General Hospital/Harvard Medical School, Boston, MA, United States
- Department of Pathology, Massachusetts General Hospital, Boston, MA, United States
| | - Nahel Elias
- Center for Transplantation Sciences, Massachusetts General Hospital/Harvard Medical School, Boston, MA, United States
- Department of Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA, United States
| | - James F. Markmann
- Center for Transplantation Sciences, Massachusetts General Hospital/Harvard Medical School, Boston, MA, United States
- Department of Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA, United States
| | - Gregory D. Lewis
- Center for Transplantation Sciences, Massachusetts General Hospital/Harvard Medical School, Boston, MA, United States
- Department of Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA, United States
| | - Leonardo V. Riella
- Center for Transplantation Sciences, Massachusetts General Hospital/Harvard Medical School, Boston, MA, United States
- Department of Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA, United States
- Division of Nephrology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, United States
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31
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Louis K, Lefaucheur C. DSA in solid organ transplantation: is it a matter of specificity, amount, or functional characteristics? Curr Opin Organ Transplant 2022; 27:392-398. [PMID: 35881421 DOI: 10.1097/mot.0000000000001006] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
PURPOSE OF REVIEW The present review describes the clinical relevance of human leukocyte antigen (HLA) donor-specific antibodies (HLA-DSAs) as biomarkers of alloimmunity and summarizes recent improvements in their characterization that provide insights into immune risk assessment, precision diagnosis, and prognostication in transplantation. RECENT FINDINGS Recent studies have addressed the clinical utility of HLA-DSAs as biomarkers for immune risk assessment in pretransplant and peritransplant, diagnosis and treatment evaluation of antibody-mediated rejection, immune monitoring posttransplant, and risk stratification. SUMMARY HLA-DSAs have proved to be the most advanced immune biomarkers in solid organ transplantation in terms of analytical validity, clinical validity and clinical utility. Recent studies are integrating multiple HLA-DSA characteristics including antibody specificity, HLA class, quantity, immunoglobulin G subclass, and complement-binding capacity to improve risk assessment peritransplant, diagnosis and treatment evaluation of antibody-mediated rejection, immune monitoring posttransplant, and transplant prognosis evaluation. In addition, integration of HLA-DSAs to clinical, functional and histological transplant parameters has further consolidated the utility of HLA-DSAs as robust biomarkers and allows to build new tools for monitoring, precision diagnosis, and risk stratification for individual patients. However, prospective and randomized-controlled studies addressing the clinical benefit and cost-effectiveness of HLA-DSA-based monitoring and patient management strategies are required to demonstrate that the use of HLA-DSAs as biomarkers can improve current clinical practice and transplant outcomes.
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Affiliation(s)
- Kevin Louis
- Kidney Transplant Department, Saint Louis Hospital, Assistance Publique-Hôpitaux de Paris
- Human Immunology and Immunopathology, Université de Paris
| | - Carmen Lefaucheur
- Kidney Transplant Department, Saint Louis Hospital, Assistance Publique-Hôpitaux de Paris
- Paris Translational Research Center for Organ Transplantation, Institut national de la santé et de la recherche médicale UMR-S970, Université de Paris, Paris, France
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32
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Song G, Wang S, Barkestani MN, Mullan C, Fan M, Jiang B, Jiang Q, Li X, Jane-wit D. Membrane attack complexes, endothelial cell activation, and direct allorecognition. Front Immunol 2022; 13:1020889. [PMID: 36211400 PMCID: PMC9539657 DOI: 10.3389/fimmu.2022.1020889] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 09/07/2022] [Indexed: 11/18/2022] Open
Abstract
Endothelial cells (ECs) form a critical immune interface regulating both the activation and trafficking of alloreactive T cells. In the setting of solid organ transplantation, donor-derived ECs represent sites where alloreactive T cells encounter major and minor tissue-derived alloantigens. During this initial encounter, ECs may formatively modulate effector responses of these T cells through expression of inflammatory mediators. Direct allorecognition is a process whereby recipient T cells recognize alloantigen in the context of donor EC-derived HLA molecules. Direct alloresponses are strongly modulated by human ECs and are galvanized by EC-derived inflammatory mediators. Complement are immune proteins that mark damaged or foreign surfaces for immune cell activation. Following labeling by natural IgM during ischemia reperfusion injury (IRI) or IgG during antibody-mediated rejection (ABMR), the complement cascade is terminally activated in the vicinity of donor-derived ECs to locally generate the solid-phase inflammatory mediator, the membrane attack complex (MAC). Via upregulation of leukocyte adhesion molecules, costimulatory molecules, and cytokine trans-presentation, MAC strengthen EC:T cell direct alloresponses and qualitatively shape the alloimmune T cell response. These processes together promote T cell-mediated inflammation during solid organ transplant rejection. In this review we describe molecular pathways downstream of IgM- and IgG-mediated MAC assembly on ECs in the setting of IRI and ABMR of tissue allografts, respectively. We describe work demonstrating that MAC deposition on ECs generates ‘signaling endosomes’ that sequester and post-translationally enhance the stability of inflammatory signaling molecules to promote EC activation, a process potentiating EC-mediated direct allorecognition. Additionally, with consideration to first-in-human xenotransplantation procedures, we describe clinical therapeutics based on inhibition of the complement pathway. The complement cascade critically mediates EC activation and improved understanding of relevant effector pathways will uncover druggable targets to obviate dysregulated alloimmune T cell infiltration into tissue allografts.
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Affiliation(s)
- Guiyu Song
- Section of Cardiovascular Medicine, Dept of Internal Medicine, Yale University School of Medicine, New Haven, CT, United States
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Shaoxun Wang
- Section of Cardiovascular Medicine, Dept of Internal Medicine, Yale University School of Medicine, New Haven, CT, United States
- Department of Surgery, Yale University School of Medicine, New Haven, CT, United States
| | - Mahsa Nouri Barkestani
- Section of Cardiovascular Medicine, Dept of Internal Medicine, Yale University School of Medicine, New Haven, CT, United States
| | - Clancy Mullan
- Department of Surgery, Yale University School of Medicine, New Haven, CT, United States
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, United States
| | - Matthew Fan
- Section of Cardiovascular Medicine, Dept of Internal Medicine, Yale University School of Medicine, New Haven, CT, United States
| | - Bo Jiang
- Department of Surgery, Yale University School of Medicine, New Haven, CT, United States
- Department of Vascular Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Quan Jiang
- Section of Cardiovascular Medicine, Dept of Internal Medicine, Yale University School of Medicine, New Haven, CT, United States
| | - Xue Li
- Section of Cardiovascular Medicine, Dept of Internal Medicine, Yale University School of Medicine, New Haven, CT, United States
- Department of Nephrology, The First Hospital of China Medical University, Shenyang, China
| | - Dan Jane-wit
- Section of Cardiovascular Medicine, Dept of Internal Medicine, Yale University School of Medicine, New Haven, CT, United States
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, United States
- Department of Cardiology, West Haven VA Medical Center, West Haven, CT, United States
- *Correspondence: Dan Jane-wit,
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A Review of Biomarkers of Cardiac Allograft Rejection: Toward an Integrated Diagnosis of Rejection. Biomolecules 2022; 12:biom12081135. [PMID: 36009029 PMCID: PMC9405997 DOI: 10.3390/biom12081135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 12/22/2022] Open
Abstract
Despite major advances in immunosuppression, allograft rejection remains an important complication after heart transplantation, and it is associated with increased morbidity and mortality. The gold standard invasive strategy to monitor and diagnose cardiac allograft rejection, based on the pathologic evaluation of endomyocardial biopsies, suffers from many limitations including the low prevalence of rejection, sample bias, high inter-observer variability, and international working formulations based on arbitrary cut-offs that simplify the landscape of rejection. The development of innovative diagnostic and prognostic strategies—integrating conventional histology, molecular profiling of allograft biopsy, and the discovery of new tissue or circulating biomarkers—is one of the major challenges of translational medicine in solid organ transplantation, and particularly in heart transplantation. Major advances in the field of biomarkers of rejection have paved the way for a paradigm shift in the monitoring and diagnosis of cardiac allograft rejection. We review the recent developments in the field, including non-invasive biomarkers to minimize the number of protocol endomyocardial biopsies and tissue biomarkers as companion tools of pathology to refine the diagnosis of cardiac rejection. Finally, we discuss the potential role of these biomarkers to provide an integrated bio-histomolecular diagnosis of cardiac allograft rejection.
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Nair N. Vascular rejection in cardiac allograft vasculopathy: Impact on graft survival. Front Cardiovasc Med 2022; 9:919036. [PMID: 35990962 PMCID: PMC9386065 DOI: 10.3389/fcvm.2022.919036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 07/14/2022] [Indexed: 11/24/2022] Open
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Albers EL, Friedland-Little JM, Hong BJ, Kemna MS, Warner P, Law YM. Human leukocyte antigen eplet mismatching is associated with increased risk of graft loss and rejection after pediatric heart transplant. Pediatr Transplant 2022; 26:e14126. [PMID: 34476876 DOI: 10.1111/petr.14126] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 08/09/2021] [Accepted: 08/13/2021] [Indexed: 12/01/2022]
Abstract
BACKGROUND While mismatching between donor and recipient human leukocyte antigen (HLA) alleles has been associated with increased graft loss in pediatric heart recipients, it is actually the surface amino acid structures, termed eplets, which determine the antigenicity of each HLA molecule. We hypothesized that HLA eplet mismatch analysis is a better predictor of adverse outcomes after pediatric heart transplant than conventional allele mismatch comparison. METHODS A retrospective review of the Pediatric Heart Transplant Society database identified pediatric heart recipients (<18 years at listing) with complete donor and recipient HLA typing (A, B, and DR). Imputed high-resolution HLA genotypes were entered into HLAMatchmaker software which then calculated the number of eplet mismatches between each donor-recipient pair. Multivariable Cox regression analysis was used to examine associations between allele or eplet mismatching and adverse outcomes. RESULTS Compared to those with <20 HLA class I eplet mismatches, recipients with 20 or more HLA class I eplet mismatches had an increased risk of graft loss (HR 1.46 [1.01-2.12], p = .049). HLA class I eplet mismatching was also associated with rejection (>20 mismatches: HR 1.30 [1.03-1.65], p = .030), while HLA class II eplet mismatching was associated with specified antibody-mediated rejection (10-20 mismatches: HR 1.57 [1.06-2.34], p = .025; >20 mismatches: HR 3.14 [1.72-5.71], p < .001). Neither HLA class I nor class II allele mismatching was significantly associated with graft loss or rejection. CONCLUSION Eplet mismatch analysis was more predictive of adverse post-transplant outcomes (including graft loss and rejection) than allele mismatch comparison. Further study, including prospective high-resolution HLA typing, is warranted.
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Affiliation(s)
- Erin L Albers
- Division of Pediatric Cardiology, Seattle Children's Hospital, Seattle, WA, USA
| | | | - Borah J Hong
- Division of Pediatric Cardiology, Seattle Children's Hospital, Seattle, WA, USA
| | - Mariska S Kemna
- Division of Pediatric Cardiology, Seattle Children's Hospital, Seattle, WA, USA
| | - Paul Warner
- Immunogenetics/HLA Laboratory, Bloodworks Northwest, Seattle, WA, USA
| | - Yuk M Law
- Division of Pediatric Cardiology, Seattle Children's Hospital, Seattle, WA, USA
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Moreno JD, Verma AK, Kopecky BJ, Dehner C, Kostelecky N, Vader JM, Lin CY, Schilling JD. Angiotensin II Type 1 Receptor Antibody-mediated Rejection Following Orthotopic Heart Transplant: A Single-center Experience. Transplantation 2022; 106:373-380. [PMID: 33988339 DOI: 10.1097/tp.0000000000003712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Antibody-mediated rejection (AMR) following orthotopic heart transplant (OHT) causes significant morbidity and mortality. There are limited data on antibodies to the angiotensin II type 1 receptor antibody (AT1R-Ab) causing rejection following OHT. METHODS This is a retrospective, single-center study that presents our 2-y experience with a series of 11 patients with evidence of nonspecific graft dysfunction and pathologic levels of AT1R-Ab. The clinical outcomes and treatments were compared to a group of 10 patients, also with evidence of nonspecific graft dysfunction, but who had nonsignificant AT1R-Ab titers. RESULTS The mean age of the AT1R-Ab cohort was 52% and 73% were bridged to transplant with an left ventricular assist device. The average left ventricular ejection fraction at presentation was 45%, and most were not on an angiotensin receptor blocker (ARB). Endomyocardial biopsies in those with elevated AT1R-Ab levels frequently showed reactive endothelium/endocardium without C4d or intravascular CD68 staining. Ten patients (91%) were started on an ARB. Other therapies included plasmapheresis and IVIg (64%), with 4 patients also receiving rituximab. Most patients had symptom improvement, but minimal change in graft function at an average 6 mo of follow-up. CONCLUSIONS The role of AT1R-Ab-mediated rejection in OHT recipients remains poorly understood. More than half of patients at our center who presented with graft dysfunction in the absence of acute cellular rejection or AMR were found to have elevated AT1R-Ab titers. Empiric AMR treatment in conjunction with ARB therapy may improve patient outcomes. Future studies are needed to better define the optimal treatment modalities for ATR1-Ab-mediated AMR.
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Affiliation(s)
- Jonathan D Moreno
- Division of Cardiology, Department of Medicine, Washington University in St. Louis, St. Louis, MO
| | - Amanda K Verma
- Division of Cardiology, Department of Medicine, Washington University in St. Louis, St. Louis, MO
| | - Benjamin J Kopecky
- Division of Cardiology, Department of Medicine, Washington University in St. Louis, St. Louis, MO
| | - Carina Dehner
- Department of Pathology & Immunology, Washington University in St. Louis, St. Louis, MO
| | - Nicolas Kostelecky
- Department of Pathology & Immunology, Washington University in St. Louis, St. Louis, MO
| | - Justin M Vader
- Division of Cardiology, Department of Medicine, Washington University in St. Louis, St. Louis, MO
| | - Chieh-Yu Lin
- Department of Pathology & Immunology, Washington University in St. Louis, St. Louis, MO
| | - Joel D Schilling
- Division of Cardiology, Department of Medicine, Washington University in St. Louis, St. Louis, MO
- Department of Pathology & Immunology, Washington University in St. Louis, St. Louis, MO
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Shotgun Immunoproteomics for Identification of Nonhuman Leukocyte Antigens Associated With Cellular Dysfunction in Heart Transplant Rejection. Transplantation 2021; 106:1376-1389. [PMID: 34923540 DOI: 10.1097/tp.0000000000004012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The International Society for Heart and Lung Transplant consensus panel notes that too little data exist regarding the role of non-HLA in allograft rejection. We developed a novel shotgun immunoproteomic approach to determine the identities and potential roles non-HLA play in antibody-mediated rejection (AMR) in heart transplant recipients. METHODS Serum was collected longitudinally from heart transplant recipients experiencing AMR in the absence of donor-specific anti-HLA antibodies (n = 6) and matched no rejection controls (n = 7). Antidonor heart affinity chromatography columns were formed by recipient immunoglobulin G immobilization at transplantation, acute rejection, and chronic postrejection time points. Affinity chromatography columns were used to capture antigens from individual patient's donor heart biopsies collected at transplantation. Captured proteins were subjected to quantitative proteomic analysis and the longitudinal response was calculated. RESULTS Overlap in antigen-specific response between AMR and non-AMR patients was only 8.3%. In AMR patients, a total of 155 non-HLAs were identified, with responses toward 43 high prevalence antigens found in ≥50% of patients. Immunofluorescence staining for representative high prevalence antigens demonstrated that their abundance increased at acute rejection, correlating with their respective non-HLA antibody response. Physiological changes in cardiomyocyte and endothelial cell function, following in vitro culture with patient immunoglobulin G, correlated with response toward several high prevalence antigens. CONCLUSIONS This work demonstrates a novel high-throughput strategy to identify clinically relevant non-HLA from donor endomyocardial biopsy. Such a technique has the potential to improve understanding of longitudinal timing of antigen-specific responses and their cause and effect relationship in graft rejection.
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38
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Khan SM, Sumbal R, Schenk AD. Impact of Anti-HLA De Novo Donor Specific Antibody on Graft Outcomes in Pancreas Transplantation: A Meta-Analysis. Transplant Proc 2021; 53:3022-3029. [PMID: 34772490 DOI: 10.1016/j.transproceed.2021.08.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Accepted: 08/30/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND The aim of this review is to provide consensus on the impact of antihuman leukocyte antigen (anti-HLA) de novo donor-specific antibodies (dnDSA) on pancreatic allograft loss. METHODS We systematically searched electronic databases through August 2020 using Preferred Reporting Items for Systematic Reviews and Meta-Analyses methodology. Articles that provided or allowed estimation of the odds ratio (OR) and 95% confidence interval (CI) for pancreatic allograft loss in patients with and without anti-HLA dnDSA were included. RESULTS Eight studies with a total of 1434 patients were included. Patients with anti-HLA dnDSA had significantly higher odds of graft failure (OR = 4.42, 95% CI [3.15-6.22], I2 = 38%). Pooled data on graft rejection showed that patients with anti-HLA dnDSA have significantly higher odds of rejection than patients without anti-HLA (OR = 3.35, 95% CI [2.28-4.91], I2 = 38%). CONCLUSION The results of our meta-analysis show that anti-HLA dnDSA is strongly associated with pancreas graft failure and rejection. Surveillance for anti-HLA dnDSA is an important component of post-transplant immune monitoring.
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Affiliation(s)
- Sualeh Muslim Khan
- Dow Medical College, Dow University of Health Sciences, Karachi, Pakistan.
| | - Ramish Sumbal
- Dow Medical College, Dow University of Health Sciences, Karachi, Pakistan
| | - Austin D Schenk
- Division of Transplantation Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio
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Mantell BS, Cordero H, See SB, Clerkin KJ, Vasilescu R, Marboe CC, Naka Y, Restaino S, Colombo PC, Addonizio LJ, Farr MA, Zorn E. Transcriptomic heterogeneity of antibody mediated rejection after heart transplant with or without donor specific antibodies. J Heart Lung Transplant 2021; 40:1472-1480. [PMID: 34420852 PMCID: PMC8571048 DOI: 10.1016/j.healun.2021.06.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 06/16/2021] [Accepted: 06/18/2021] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Antibody mediated rejection (AMR) is an increasingly studied cause of graft failure after heart transplantation. AMR diagnosis previously required the detection of circulating donor specific antibodies (DSA); however, the most recent criteria only require pathological findings. This classification defined a subset of patients with AMR, yet without known antibodies. Here, we sought to evaluate differences in the transcriptome profile associated with different types of AMR. METHODS RNA sequencing was used on endomyocardial biopsies to analyze and compare transcriptomic profiles associated with different subtypes of AMR defined by immunopathological and histopathological findings, as well as the presence or absence of DSA. Gene expression profiles were characterized for each diagnostic group. RESULTS The most divergent gene expression profiles were observed between patients with or without DSA. AMR subtypes associated with DSA showed expression of signature genes involved in monocyte activation and response to interferon. There was also substantial difference between the transcriptomic profiles of AMR defined by histopathological and immunopathological findings, the latter being associated with expression of mucin genes. In contrast, there was no differential RNA expression between patients with pAMR1i without DSA and those without AMR. Likewise, no differential expression was observed between patients with pAMR1h with DSA and pAMR2. CONCLUSIONS Overall, our studies reveal different expression profiles in endomyocardial biopsies in relation to some key criteria used to diagnose AMR. These findings support the view that the diagnosis of AMR encompasses several phenotypes that may rely on distinct mechanisms of injury.
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Affiliation(s)
- Benjamin S Mantell
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, New York; Department of Pediatrics, Division of Pediatric Cardiology, Columbia University Medical Center, New York, New York
| | - Hector Cordero
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, New York
| | - Sarah B See
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, New York
| | - Kevin J Clerkin
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, New York
| | - Rodica Vasilescu
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, New York
| | - Charles C Marboe
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, New York
| | - Yoshifumi Naka
- Department of Surgery, Division of Cardiothoracic Surgery, Columbia University Medical Center, New York, New York
| | - Susan Restaino
- Department of Medicine, Division of Cardiology, Columbia University Medical Center, New York, New York
| | - Paolo C Colombo
- Department of Medicine, Division of Cardiology, Columbia University Medical Center, New York, New York
| | - Linda J Addonizio
- Department of Pediatrics, Division of Pediatric Cardiology, Columbia University Medical Center, New York, New York
| | - Maryjane A Farr
- Department of Medicine, Division of Cardiology, Columbia University Medical Center, New York, New York
| | - Emmanuel Zorn
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, New York.
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Yopes M, Fanek T, Fuselier B, Gaine M, Jackson R, Mabasa A, Kim A, Jennings DL, Clerkin K, Yuzefpolskaya M, Habal M, Latif F, Restaino S, Lee SH, Farr M, Colombo P, Sayer G, Uriel N. Chronic intermittent intravenous immunoglobulin in heart transplant recipients with elevated donor-specific antibody levels. Clin Transplant 2021; 36:e14524. [PMID: 34705286 DOI: 10.1111/ctr.14524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/28/2021] [Accepted: 10/18/2021] [Indexed: 11/26/2022]
Abstract
Donor-specific antibodies (DSA) are associated with antibody-mediated rejection (AMR) and poor patient survival. In heart transplant, the efficacy of intermittent intravenous immunoglobulin (IVIg) in reducing de novo DSA levels and treating AMR has not been characterized. We retrospectively studied a cohort of 19 patients receiving intermittent IVIg for elevated DSA and examined changes in DSA levels and graft function. Intermittent IVIg infusions were generally safe and well tolerated. Overall, 23 of 62 total DSA (37%) were undetectable after treatment, 21 DSA (34%) had MFI decrease by more than 25%, and 18 (29%) had MFI decrease by less than 25% or increase. The average change in MFI was -51% ± 71% (P < .001). Despite reductions in DSA, among the six patients (32%) with biopsy-confirmed AMR, left ventricular ejection fraction (LVEF) decreased in five (83%) and cardiac index (CI) decreased in three (50%). Conversely, LVEF increased in 91% and CI increased in 70% of biopsy-negative patients. All six AMR patients were readmitted during treatment, four for confirmed or suspected rejection. IVIg infusions may stabilize the allograft in patients with elevated DSA and negative biopsies, but once AMR has developed does not appear to improve allograft function despite decreasing DSA levels.
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Affiliation(s)
- Margot Yopes
- Department of Medicine, Columbia University Irving Medical Center, New York, New York, USA
| | - Tala Fanek
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Byron Fuselier
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Maureen Gaine
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Ruslana Jackson
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Angelo Mabasa
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Andrea Kim
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Douglas L Jennings
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Kevin Clerkin
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Melana Yuzefpolskaya
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Marlena Habal
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Farhana Latif
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Susan Restaino
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Sun Hi Lee
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Maryjane Farr
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Paolo Colombo
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Gabriel Sayer
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
| | - Nir Uriel
- Department of Medicine, Division of Cardiology, Columbia University Irving Medical Center, New York, New York, USA
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Nguyen LS, Salem JE, Bories MC, Coutance G, Amour J, Bougle A, Suberbielle C, Kheav VD, Carmagnat M, Rouvier P, Kirsch M, Varnous S, Leprince P, Saheb S. Impact of Sex in the Efficacy of Perioperative Desensitization Procedures in Heart Transplantation: A Retrospective Cohort Study. Front Immunol 2021; 12:659303. [PMID: 34305891 PMCID: PMC8292826 DOI: 10.3389/fimmu.2021.659303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 06/18/2021] [Indexed: 11/13/2022] Open
Abstract
Background Sensitized patients, i.e. recipients with preformed donor-specific HLA antibodies (pfDSA), are at high-risk of developing antibody-mediated rejections (AMR) and dying after heart transplantation (HTx). Perioperative desensitization procedures are associated with better outcomes but can cause sensitization, which may influence their efficacy. Methods In sensitized patients (pfDSA>1000 mean immunofluorescence (MFI) units), we assessed the effect of perioperative desensitization by comparing treated patients to a historical control cohort. Multivariable survival analyses were performed on the time to main outcome, a composite of death and biopsy-proven AMR with 5-year follow-up. Results The study included 68 patients: 31 control and 37 treated patients. There was no difference in preoperative variables between the two groups, including cumulative pfDSA [4026 (1788;8725) vs 4560 (3162;13392) MFI units, p=0.28]. The cause of sensitization was pregnancy in 24/68, 35.3%, transfusion in 61/68, 89.7%, and previous HTx in 4/68, 5.9% patients. Multivariable analysis yielded significant protective association between desensitization and events (adjusted (adj.) hazard ratio (HR)=0.44 (95% confidence interval (95CI)=0.25-0.79), p=0.006) and deleterious association between cumulative pfDSA and events [per 1000-MFI increase, adj.HR=1.028 (1.002-1.053), p=0.031]. There was a sex-difference in the efficacy of desensitization: in men (n=35), the benefit was significant [unadj.HR=0.33 (95CI=0.14-0.78); p=0.01], but not in women (n=33) [unadj.HR=0.52 (0.23-1.17), p=0.11]. In terms of the number of patients treated, in men, 2.1 of patients that were treated prevented 1 event, while in women, 3.1 required treatment to prevent 1 event. Conclusion Perioperative desensitization was associated with fewer AMR and deaths after HTx, and efficacy was more pronounced in men than women.
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Affiliation(s)
- Lee S Nguyen
- Sorbonne Université, Department of Cardiothoracic Surgery, AP.HP.6 Pitie-Salpetriere, Paris, France.,CMC Ambroise Paré, Research and Innovation, RICAP, Neuilly-sur-Seine, France.,Sorbonne Université, Clinical Investigations Center, AP.HP.6, INSERM, Paris, France
| | - Joe-Elie Salem
- Sorbonne Université, Clinical Investigations Center, AP.HP.6, INSERM, Paris, France
| | - Marie-Cécile Bories
- Sorbonne Université, Department of Cardiothoracic Surgery, AP.HP.6 Pitie-Salpetriere, Paris, France
| | - Guillaume Coutance
- Sorbonne Université, Department of Cardiothoracic Surgery, AP.HP.6 Pitie-Salpetriere, Paris, France
| | - Julien Amour
- Jacques Cartier Private Hospital, Department of Cardiothoracic Surgery, Massy, France
| | - Adrien Bougle
- Sorbonne Université, Department of Anesthesiology, AP.HP.6 Pitie-Salpetriere, Paris, France
| | | | | | | | - Philippe Rouvier
- Sorbonne Université, Department of Anatomopathology, AP.HP.6 Pitie-Salpetriere, Paris, France
| | - Matthias Kirsch
- Department of Cardiovascular Surgery, University Hospital, Lausanne, Switzerland
| | - Shaida Varnous
- Sorbonne Université, Department of Cardiothoracic Surgery, AP.HP.6 Pitie-Salpetriere, Paris, France
| | - Pascal Leprince
- Sorbonne Université, Department of Cardiothoracic Surgery, AP.HP.6 Pitie-Salpetriere, Paris, France
| | - Samir Saheb
- Sorbonne Université, service d'hémobiologie, AP.HP.6 Pitie-Salpetriere, Paris, France
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Patel JK, Coutance G, Loupy A, Dilibero D, Hamilton M, Kittleson M, Kransdorf E, Azarbal B, Seguchi O, Zhang X, Chang D, Geft D, Czer L, Varnous S, Kobashigawa JA. Complement inhibition for prevention of antibody-mediated rejection in immunologically high-risk heart allograft recipients. Am J Transplant 2021; 21:2479-2488. [PMID: 33251691 DOI: 10.1111/ajt.16420] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 11/18/2020] [Accepted: 11/18/2020] [Indexed: 02/02/2023]
Abstract
Allosensitization represents a major barrier to heart transplantation (HTx). We assessed the efficacy and safety of complement inhibition at transplant in highly sensitized heart transplant recipients. We performed a single-center, single-arm, open-label trial (NCT02013037). Patients with panel reactive antibodies (PRA) ≥70% and pre-formed donor-specific antibodies (DSA) were eligible. In addition to standard of care, patients received nine infusions of eculizumab during the first 2 months posttransplant. The primary composite endpoint was antibody-mediated rejection (AMR) ≥pAMR2 and/or left ventricular dysfunction during the first year. Secondary endpoints included hemodynamic compromise, allograft rejection, and patient survival. Twenty patients were included. Median cPRA and mean fluorescence intensity of immunodominant DSA were 95% (90%-97%) and 6250 (5000-10 000), respectively. Retrospective B cell and T cell flow crossmatches were positive in 14 and 11 patients, respectively. The primary endpoint occurred in four patients (20%). Survival at 1 year was 90% with no deaths resulting from AMR. In a prespecified analysis comparing treated patients to matched control patients, we observed a dramatic reduction in the risk of biopsy-proven AMR in patients treated with eculizumab (HR = 0.36, 95% CI = 0.14-0.95, p = .032). Our findings support the prophylactic use of complement inhibition for heart transplantation at high immunological risk. ClinincalTrials.gov, NCT02013037.
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Affiliation(s)
- Jignesh K Patel
- Department of Cardiology, Cedars-Sinai Medical Center, Smidt Heart Institute, Los Angeles, California, USA
| | - Guillaume Coutance
- Department of Cardiology, Cedars-Sinai Medical Center, Smidt Heart Institute, Los Angeles, California, USA.,Department of Cardiac and Thoracic Surgery, Cardiology Institute, Pitié-Salpêtrière Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Sorbonne University Medical School, Paris, France.,Paris Translational Research Centre for Organ Transplantation, Université de Paris, INSERM, Paris, France
| | - Alexandre Loupy
- Paris Translational Research Centre for Organ Transplantation, Université de Paris, INSERM, Paris, France.,Kidney Transplant Department, Necker Hospital, Assistance Publique - Hôpitaux de Paris, Paris, France
| | - Deanna Dilibero
- Department of Pharmacy, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Michele Hamilton
- Department of Cardiology, Cedars-Sinai Medical Center, Smidt Heart Institute, Los Angeles, California, USA
| | - Michelle Kittleson
- Department of Cardiology, Cedars-Sinai Medical Center, Smidt Heart Institute, Los Angeles, California, USA
| | - Evan Kransdorf
- Department of Cardiology, Cedars-Sinai Medical Center, Smidt Heart Institute, Los Angeles, California, USA
| | - Babak Azarbal
- Department of Cardiology, Cedars-Sinai Medical Center, Smidt Heart Institute, Los Angeles, California, USA
| | - Osamu Seguchi
- Department of Cardiology, Cedars-Sinai Medical Center, Smidt Heart Institute, Los Angeles, California, USA.,Department of Transplant Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Xiaohai Zhang
- HLA Laboratory, Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - David Chang
- Department of Cardiology, Cedars-Sinai Medical Center, Smidt Heart Institute, Los Angeles, California, USA
| | - Dael Geft
- Department of Cardiology, Cedars-Sinai Medical Center, Smidt Heart Institute, Los Angeles, California, USA
| | - Lawrence Czer
- Department of Cardiology, Cedars-Sinai Medical Center, Smidt Heart Institute, Los Angeles, California, USA
| | - Shaida Varnous
- Department of Cardiac and Thoracic Surgery, Cardiology Institute, Pitié-Salpêtrière Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Sorbonne University Medical School, Paris, France
| | - Jon A Kobashigawa
- Department of Cardiology, Cedars-Sinai Medical Center, Smidt Heart Institute, Los Angeles, California, USA
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Agbor-Enoh S, Shah P, Tunc I, Hsu S, Russell S, Feller E, Shah K, Rodrigo ME, Najjar SS, Kong H, Pirooznia M, Fideli U, Bikineyeva A, Marishta A, Bhatti K, Yang Y, Mutebi C, Yu K, Jang MK, Marboe C, Berry GJ, Valantine HA. Cell-Free DNA to Detect Heart Allograft Acute Rejection. Circulation 2021; 143:1184-1197. [PMID: 33435695 PMCID: PMC8221834 DOI: 10.1161/circulationaha.120.049098] [Citation(s) in RCA: 132] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 11/24/2020] [Indexed: 01/13/2023]
Abstract
BACKGROUND After heart transplantation, endomyocardial biopsy (EMBx) is used to monitor for acute rejection (AR). Unfortunately, EMBx is invasive, and its conventional histological interpretation has limitations. This is a validation study to assess the performance of a sensitive blood biomarker-percent donor-derived cell-free DNA (%ddcfDNA)-for detection of AR in cardiac transplant recipients. METHODS This multicenter, prospective cohort study recruited heart transplant subjects and collected plasma samples contemporaneously with EMBx for %ddcfDNA measurement by shotgun sequencing. Histopathology data were collected to define AR, its 2 phenotypes (acute cellular rejection [ACR] and antibody-mediated rejection [AMR]), and controls without rejection. The primary analysis was to compare %ddcfDNA levels (median and interquartile range [IQR]) for AR, AMR, and ACR with controls and to determine %ddcfDNA test characteristics using receiver-operator characteristics analysis. RESULTS The study included 171 subjects with median posttransplant follow-up of 17.7 months (IQR, 12.1-23.6), with 1392 EMBx, and 1834 %ddcfDNA measures available for analysis. Median %ddcfDNA levels decayed after surgery to 0.13% (IQR, 0.03%-0.21%) by 28 days. Also, %ddcfDNA increased again with AR compared with control values (0.38% [IQR, 0.31-0.83%], versus 0.03% [IQR, 0.01-0.14%]; P<0.001). The rise was detected 0.5 and 3.2 months before histopathologic diagnosis of ACR and AMR. The area under the receiver operator characteristic curve for AR was 0.92. A 0.25%ddcfDNA threshold had a negative predictive value for AR of 99% and would have safely eliminated 81% of EMBx. In addition, %ddcfDNA showed distinctive characteristics comparing AMR with ACR, including 5-fold higher levels (AMR ≥2, 1.68% [IQR, 0.49-2.79%] versus ACR grade ≥2R, 0.34% [IQR, 0.28-0.72%]), higher area under the receiver operator characteristic curve (0.95 versus 0.85), higher guanosine-cytosine content, and higher percentage of short ddcfDNA fragments. CONCLUSIONS We found that %ddcfDNA detected AR with a high area under the receiver operator characteristic curve and negative predictive value. Monitoring with ddcfDNA demonstrated excellent performance characteristics for both ACR and AMR and led to earlier detection than the EMBx-based monitoring. This study supports the use of %ddcfDNA to monitor for AR in patients with heart transplant and paves the way for a clinical utility study. Registration: URL: https://www.clinicaltrials.gov; Unique identifier: NCT02423070.
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Affiliation(s)
- Sean Agbor-Enoh
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- Department of Medicine, The Johns Hopkins School of Medicine, 1830 East Monument Street, Baltimore, MD
- Division of Intramural Research, National Heart, Lung and Blood Institute, 10 Center Drive, 7S261, Bethesda Maryland, 20982
| | - Palak Shah
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- Department of Heart Failure and Transplantation, Inova Heart and Vascular Institute, Falls Church, VA
| | - Ilker Tunc
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- Division of Intramural Research, National Heart, Lung and Blood Institute, 10 Center Drive, 7S261, Bethesda Maryland, 20982
| | - Steven Hsu
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- Department of Medicine, The Johns Hopkins School of Medicine, 1830 East Monument Street, Baltimore, MD
| | - Stuart Russell
- Department of Medicine, Duke University School of Medicine, Durham, NC
| | - Erika Feller
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- University of Maryland Medical Center, Baltimore, MD
| | - Keyur Shah
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- Virginia Commonwealth University, Richmond, VA
| | - Maria E. Rodrigo
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- MedStar Heart and Vascular Institute, MedStar Washington Hospital Center, Washington DC
| | - Samer S. Najjar
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- MedStar Heart and Vascular Institute, MedStar Washington Hospital Center, Washington DC
| | - Hyesik Kong
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- Division of Intramural Research, National Heart, Lung and Blood Institute, 10 Center Drive, 7S261, Bethesda Maryland, 20982
| | - Mehdi Pirooznia
- Division of Intramural Research, National Heart, Lung and Blood Institute, 10 Center Drive, 7S261, Bethesda Maryland, 20982
| | - Ulgen Fideli
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- Division of Intramural Research, National Heart, Lung and Blood Institute, 10 Center Drive, 7S261, Bethesda Maryland, 20982
| | - Alfiya Bikineyeva
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- Division of Intramural Research, National Heart, Lung and Blood Institute, 10 Center Drive, 7S261, Bethesda Maryland, 20982
| | - Argit Marishta
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- Division of Intramural Research, National Heart, Lung and Blood Institute, 10 Center Drive, 7S261, Bethesda Maryland, 20982
| | - Kenneth Bhatti
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- Division of Intramural Research, National Heart, Lung and Blood Institute, 10 Center Drive, 7S261, Bethesda Maryland, 20982
| | - Yanqin Yang
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- Division of Intramural Research, National Heart, Lung and Blood Institute, 10 Center Drive, 7S261, Bethesda Maryland, 20982
| | - Cedric Mutebi
- Division of Intramural Research, National Heart, Lung and Blood Institute, 10 Center Drive, 7S261, Bethesda Maryland, 20982
- Wayne State University School of Medicine, Detroit MI
| | - Kai Yu
- National Cancer Institute, Rockville, MD
| | - Moon Kyoo Jang
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- Division of Intramural Research, National Heart, Lung and Blood Institute, 10 Center Drive, 7S261, Bethesda Maryland, 20982
| | - Charles Marboe
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- Department of Pathology, New York Presbyterian University Hospital of Cornell and Columbia, New York, New York, USA
| | - Gerald J. Berry
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- Stanford University School of Medicine, Palo Alto, CA
| | - Hannah A. Valantine
- Genomic Research Alliance for Transplantation (GRAfT), 10 Center Drive, 7S261, Bethesda Maryland, 20982
- Division of Intramural Research, National Heart, Lung and Blood Institute, 10 Center Drive, 7S261, Bethesda Maryland, 20982
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Daly RC, Rosenbaum AN, Dearani JA, Clavell AL, Pereira NL, Boilson BA, Frantz RP, Behfar A, Dunlay SM, Rodeheffer RJ, Schirger JA, Taner T, Gandhi MJ, Heimbach JK, Rosen CB, Edwards BS, Kushwaha SS. Heart-After-Liver Transplantation Attenuates Rejection of Cardiac Allografts in Sensitized Patients. J Am Coll Cardiol 2021; 77:1331-1340. [PMID: 33706876 DOI: 10.1016/j.jacc.2021.01.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 01/07/2021] [Accepted: 01/08/2021] [Indexed: 10/22/2022]
Abstract
BACKGROUND In patients undergoing heart transplantation, significant allosensitization limits access to organs, resulting in longer wait times and high waitlist mortality. Current desensitization strategies are limited in enabling successful transplantation. OBJECTIVES The purpose of this study was to describe the cumulative experience of combined heart-liver transplantation using a novel heart-after-liver transplant (HALT) protocol resulting in profound immunologic protection. METHODS Reported are the results of a clinical protocol that was instituted to transplant highly sensitized patients requiring combined heart and liver transplantation at a single institution. Patients were dual-organ listed with perceived elevated risk of rejection or markedly prolonged waitlist time due to high levels of allo-antibodies. Detailed immunological data and long-term patient and graft outcomes were obtained. RESULTS A total of 7 patients (age 43 ± 7 years, 86% women) with high allosensitization (median calculated panel reactive antibody = 77%) underwent HALT. All had significant, unacceptable donor specific antibodies (DSA) (>4,000 mean fluorescence antibody). Prospective pre-operative flow cytometric T-cell crossmatch was positive in all, and B-cell crossmatch was positive in 5 of 7. After HALT, retrospective crossmatch (B- and T-cell) became negative in all. DSA fell dramatically; at last follow-up, all pre-formed or de novo DSA levels were insignificant at <2,000 mean fluorescence antibody. No patients experienced >1R rejection over a median follow-up of 48 months (interquartile range: 25 to 68 months). There was 1 death due to metastatic cancer and no significant graft dysfunction. CONCLUSIONS A heart-after-liver transplantation protocol enables successful transplantation via near-elimination of DSA and is effective in preventing adverse immunological outcomes in highly sensitized patients listed for combined heart-liver transplantation.
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Affiliation(s)
- Richard C Daly
- Department of Cardiovascular Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Andrew N Rosenbaum
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA; William J von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, Minnesota, USA
| | - Joseph A Dearani
- Department of Cardiovascular Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Alfredo L Clavell
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA; William J von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, Minnesota, USA
| | - Naveen L Pereira
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA; William J von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, Minnesota, USA
| | - Barry A Boilson
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA; William J von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, Minnesota, USA
| | - Robert P Frantz
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA; William J von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, Minnesota, USA
| | - Atta Behfar
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA; William J von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, Minnesota, USA; VanCleve Cardiac Regenerative Medicine Program, Center for Regenerative Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Shannon M Dunlay
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA; William J von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, Minnesota, USA; Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota, USA
| | - Richard J Rodeheffer
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA; William J von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, Minnesota, USA
| | - John A Schirger
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA; William J von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, Minnesota, USA
| | - Timucin Taner
- Department of Surgery, Mayo Clinic, Rochester, Minnesota, USA; Department of Immunology, Mayo Clinic, Rochester, Minnesota, USA
| | - Manish J Gandhi
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Charles B Rosen
- Department of Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Brooks S Edwards
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA; William J von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, Minnesota, USA
| | - Sudhir S Kushwaha
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA; William J von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, Minnesota, USA.
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45
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Fujino T, Kumai Y, Yang B, Kalantari S, Rodgers D, Henriksen K, Chang A, Husain A, Kim G, Sayer G, Uriel N. Discordance between immunofluorescence and immunohistochemistry C4d staining and outcomes following heart transplantation. Clin Transplant 2021; 35:e14242. [PMID: 33539043 DOI: 10.1111/ctr.14242] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 01/17/2021] [Accepted: 01/25/2021] [Indexed: 12/23/2022]
Abstract
BACKGROUND Capillary deposition of C4d is an important marker of antibody-mediated rejection (AMR) following heart transplantation (HT). There are two immunopathologic assay methods for detecting C4d: frozen-tissue immunofluorescence (IF) and paraffin immunohistochemistry (IHC). The clinical significance of discrepancy between the results of IF and IHC has not been understood. METHODS AND RESULTS We reviewed 2187 biopsies from 142 HT recipients who had biopsies with assessment of both IF and IHC staining. Among them, 103 (73%) patients had negative IF and IHC C4d staining (Negative Group) and 32 (23%) patients had positive IF but negative IHC staining (Discordant Group). At the time of positive biopsy, 6 (19%) Discordant patients had graft dysfunction, compared to 5 (5%) Negative patients (p = .022). Cumulative incidence of cellular rejection at 1 year was comparable (31% vs. 29%, p = .46); however, cumulative incidence of AMR was significantly higher in the Discordant group (21% vs. 4%, p = .004). Overall 1-year survival was comparable (90% vs. 96%, p = .24); however, freedom from heart failure (HF) was significantly lower in the Discordant group (70% vs. 96%, p < .001). CONCLUSION The Discordant group showed higher rates of graft dysfunction, AMR and HF admission than the Negative group.
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Affiliation(s)
- Takeo Fujino
- Department of Medicine, University of Chicago Medical Center, Chicago, IL, USA
| | - Yuto Kumai
- Cardiology Division, Columbia University, New York, NY, USA
| | - Benjamin Yang
- Department of Medicine, University of Chicago Medical Center, Chicago, IL, USA
| | - Sara Kalantari
- Department of Medicine, University of Chicago Medical Center, Chicago, IL, USA
| | - Daniel Rodgers
- Department of Medicine, University of Chicago Medical Center, Chicago, IL, USA
| | - Kammi Henriksen
- Department of Pathology, University of Chicago Medical Center, Chicago, IL, USA
| | - Anthony Chang
- Department of Pathology, University of Chicago Medical Center, Chicago, IL, USA
| | - Aliya Husain
- Department of Pathology, University of Chicago Medical Center, Chicago, IL, USA
| | - Gene Kim
- Department of Medicine, University of Chicago Medical Center, Chicago, IL, USA
| | - Gabriel Sayer
- Cardiology Division, Columbia University, New York, NY, USA
| | - Nir Uriel
- Cardiology Division, Columbia University, New York, NY, USA
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Clinical Outcomes of Perioperative Desensitization in Heart Transplant Recipients. Transplant Direct 2021; 7:e658. [PMID: 33521247 PMCID: PMC7837881 DOI: 10.1097/txd.0000000000001111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 11/10/2020] [Accepted: 11/13/2020] [Indexed: 01/12/2023] Open
Abstract
Background. Sensitization remains a barrier to heart transplantation (HT). Perioperative desensitization strategies have been described; however, a paucity of evidence exists to demonstrate efficacy and safety in HT. Methods. This single-center, retrospective study consisted of adults who received an HT. Perioperative desensitization was initiated if virtual crossmatch or flow-cytometry crossmatch was positive. Therapy consisted of plasmapheresis, intravenous immunoglobulin, and rabbit antithymocyte globulin. Historical controls received standard immunosuppression or induction. The primary endpoint was survival at 12 mo. Secondary endpoints included freedom from acute rejection, cardiac allograft vasculopathy (CAV), and infectious complications. Results. Of the 104 patients included, 48 received no induction, 46 received induction, and 10 underwent perioperative desensitization. No differences were observed in the primary endpoint at 12 mo (90.0% versus 97.9%, P = 0.25 for desensitization versus no-induction; 90.0% versus 100%, P = 0.72 for desensitization versus induction). Rates of acute rejection were lower with induction and desensitization compared with no-induction. There were no significant differences in CAV between the groups. Infectious complications were also similar among the groups (10.0% versus 16.7%, P = 0.62 for desensitization versus no-induction; 10.0% versus 30.4%, P = 0.34 for desensitization versus induction). Conclusions. This study suggests that a perioperative desensitization strategy triggered by positive virtual crossmatch or flow-cytometry crossmatch allows for successful transplantation of sensitized HT recipients and results in acceptable rates of survival, rejection, CAV, and infection at 12 mo.
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47
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Oprzędkiewicz A, Mado H, Szczurek W, Gąsior M, Szyguła-Jurkiewicz B. Donor-recipient Matching in Heart Transplantation. Open Cardiovasc Med J 2020. [DOI: 10.2174/18741924020140100042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Heart transplantation remains the treatment of choice for end-stage Heart Failure (HF). Due to the shortage of organs for transplantation and the occurrence of perioperative complications, a key problem is donor matching, which should result in increased survival and improved quality of life for patients. The success of this procedure depends on various parameters such as gender, weight, ABO blood group and Human Leukocyte Antigen (HLA) system of both the recipient and the donor. Furthermore, non-HLA antigens may also be valuable in donor-recipient matching. The aim of this article is to summarize the recent knowledge on the impact of various factors on accurate donor-recipient matching to heart transplantation.
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48
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Antibody-medicated rejection after heart transplantation: diagnosis and clinical implications. Curr Opin Organ Transplant 2020; 25:248-254. [PMID: 32304428 DOI: 10.1097/mot.0000000000000754] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
PURPOSE OF REVIEW The present article will review the diagnosis of antibody-mediated rejection in heart transplant recipients and further explore the clinical implications. RECENT FINDINGS Improved diagnostic techniques have led to increased recognition of antibody-mediated rejection and better understanding of the long-term consequences in heart transplant recipients. Endomyocardial biopsy remains the gold standard for the diagnosis of antibody-medicated ejection; however, several advances in molecular testing have emerged, including the use of gene expression profiling, messenger RNA, and microRNA. Routine surveillance of donor-specific antibodies identifies recipients at high risk for graft compromise. Additionally, new monoclonal antibody therapies have broadened our repertoire in the treatment of rejection. SUMMARY Advances in molecular testing for antibody-mediated rejection may improve the associated long-term complication, while minimizing risk to the patient.
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49
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Donor-specific antibodies in heart transplantation: can we afford the price or is it too steep to pay? Curr Opin Organ Transplant 2020; 25:555-562. [PMID: 33044348 DOI: 10.1097/mot.0000000000000818] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
PURPOSE OF REVIEW One-third of patients awaiting heart transplant are sensitized and 25-35% of heart allograft recipients develop de novo DSAs. Solid phase assays for DSA measurement have facilitated wider use of antibody monitoring and as such, our experience with DSAs is continuously evolving. RECENT FINDINGS DSAs continue to exhibit poor correlation with biopsy-proven rejection. Novel molecular technologies, such as cell-free DNA and the molecular microscope (MMDx, which detects rejection-associated intragraft mRNA transcripts), are emerging as more sensitive methods to capture subclinical graft injury. High-resolution typing techniques are providing insight into the differential immunogenicity of HLA classes through epitope and eplet analysis. As sensitization of the transplant population is continuing to rise, our repertoire of desensitization strategies is also expanding. However, there is an acute need of predictive algorithms to help forecast the responders and the durability of desensitization. Novel immunomodulatory therapies have allowed safely transplanting across a positive crossmatch with good short-term survival but reported greater degree of rejection and lower long-term graft survival. SUMMARY Our experience of outcomes as pertaining to DSAs still originates primarily from single-center studies. Our field is confronted with the challenge to establish common practice algorithms for the monitoring and treatment of DSAs.
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50
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Zhang X, Levine R, Patel JK, Kittleson M, Czer L, Kobashigawa JA. Association of vimentin antibody and other non-HLA antibodies with treated antibody mediated rejection in heart transplant recipients. Hum Immunol 2020; 81:671-674. [PMID: 33041085 DOI: 10.1016/j.humimm.2020.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/15/2020] [Accepted: 09/30/2020] [Indexed: 01/03/2023]
Abstract
Non-human leukocyte antigen (HLA) antibodies have been implicated in heart transplantation rejection. However, targets of non-HLA antibodies remain elusive. Here, we utilized a panel of multiplex beads-based assay to determine the specificity of non-HLA antibodies following heart transplantation. We utilized a selected cohort of recipients who did not have HLA donor specific antibodies, but were diagnosed with antibody mediated rejection and treated for antibody mediated rejection. We found the presence of vimentin antibody was associated with treated antibody mediated rejection. Our results suggest that, in heart transplant recipients who are suspected of AMR but in the absence of HLA donor specific antibodies, non-HLA antibodies should be examined.
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Affiliation(s)
- Xiaohai Zhang
- HLA Laboratory, Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA, United States.
| | - Ryan Levine
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Jignesh K Patel
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Michelle Kittleson
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Lawrence Czer
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Jon A Kobashigawa
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
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