ATC Abstracts

American Transplant Congress abstracts

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Articles tagged "B cells"

  • 2020 American Transplant Congress

    Next Generation Sequencing B Cell Receptor Reveals B Cell Clones Encoding HLA Antibody in Transplant Recipients

    X. Zhang

    HLA and Immunogenetcis Laboratory /CTC, Cedars Sinai Medical Center, Los Angeles, CA

    *Purpose: The development of HLA donor specific antibodies (DSA) increases the risk of antibody mediated rejection and is an independent predictor of poor patient survival.…
  • 2020 American Transplant Congress

    Effect of Rituximab Dose as Induction Therapy in ABO Incompatible Living Kidney Transplantation A Systemic Review and Network Meta Analysis

    S. Hwang1, W. Park2, K. Kim1, S. Lee1, J. Song1

    1Inha University, Incheon, Korea, Republic of, 2Keimyung University, Daegu, Korea, Republic of

    *Purpose: ABO-incompatible living kidney transplantation (ABOILKT) has steadily become more widespread. However, the optimal immunosuppressive regimen for ABOILKT remains uncertain. We aimed to determine the…
  • 2020 American Transplant Congress

    Recipient LAG3 Deficiency Results in Antibody-Mediated Rejection of Mouse Renal Allografts

    M. Nicosia, R. Fan, J. Lee, V. Gorbacheva, A. Beavers, N. Dvorina, W. M. Baldwin III, R. L. Fairchild, B. Min, A. Valujskikh

    Inflammation and Immunity, Cleveland Clinic, Cleveland, OH

    *Purpose: Lymphocyte activation gene-3 (LAG3) is a coinhibitory receptor on the surface of T and B lymphocytes, NK cells and plasmacytoid dendritic cells. Its functions…
  • 2020 American Transplant Congress

    BAFF Inhibition to Prevent Antibody Rebound Following Proteasome Inhibitor-Based Desensitization: A Randomized, Controlled Trial

    S. Tremblay1, A. Rike-Shields2, A. Govil1, M. Cardi3, P. Brailey1, R. Alloway1, E. Woodle1

    1U Cincinnati, Cincinnati, OH, 2Surgery, U Cincinnati, Christ Hospital, Cincinnati, OH, 3Christ Hospital, Cincinnati, OH

    *Purpose: Proteasome inhibitor (PI) therapy reduces bone marrow plasma cells and HLA antibodies (Abs) in renal transplant candidates. However, rebound is common in many patients…
  • 2020 American Transplant Congress

    Immune Cell Subset Profiles in HLA-Sensitized Kidney Transplant Patients (HS KTx Pts) Desensitized with Clazakizumab (CLZ, Humanized Anti-IL-6 Monoclonal Antibody) Followed by Transplantation (Tx)

    S. Ge1, M. Chu1, A. D. Guzman1, E. D. Ortiz1, A. Vo2, N. Ammerman2, S. C. Jordan2, M. Toyoda1

    1Transplant Immunology Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, 2Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA

    *Purpose: IL-6, B cell growth factor, increases follicular T helper cell (Tfh) activity, promoting plasmablast (PB) and plasma cell (PC) differentiation, and antibody production. A…
  • 2020 American Transplant Congress

    Investigation of Il35 Expressing Regulatory B Cells in Tolerance of Kidney Transplantation

    J. A. Sullivan, J. H. Fechner, E. Jankowska-Gan, W. J. Burlingham, D. B. Kaufman

    Surgery, University of Wisconsin, Madison, WI

    *Purpose: The development and maintenance of peripheral tolerance is required for long term success of solid organ transplantation without immuno-suppressive drugs. Using a novel, post-transplant,…
  • 2020 American Transplant Congress

    Evaluation of the Safety and Tolerability of Clazakizumab® as a Desensitization Agent in Highly-HLA Sensitized ESRD Patients (NCT03380962): 12m Follow-Up

    A. A. Vo1, N. Ammerman1, E. Huang1, M. Toyoda2, S. Ge2, A. Peng1, R. Najjar1, S. Williamson1, C. Meyers1, S. Sethi1, K. Lim1, J. Choi1, S. C. Jordan1

    1Kidney Transplant, Cedars Sinai Medical Ctr, Los Angeles, CA, 2Transplant Immunology Laboratory, Cedars Sinai Medical Ctr, Los Angeles, CA

    *Purpose: IL-6 mediates inflammation and activation of T-cells, B-cells & plasma cells. Thus, IL-6 may represent an important target for desensitization (DES). Here we report…
  • 2020 American Transplant Congress

    Bone Marrow Plasma Cell Heterogeneity Drives Resistance of Proteasome Inhibitor Therapy

    C. M. Castro-Rojas1, S. Tremblay2, J. Driscoll3, K. Roskin4, R. R. Alloway3, E. Woodle2, D. A. Hildeman1

    1Immunobiology, Cincinnati Children's Hospital, Cincinnati, OH, 2Surgery, University of Cincinnati College of Medicine, Cincinnati, OH, 3Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, 4Biomedical Informatics, Cincinnati Children's Hospital, Cincinnati, OH

    *Purpose: Patients sensitized to HLA antigens by prior transplantation, pregnancy or blood transfusion may have markedly prolonged waiting times for transplant. Moreover, once transplanted, the…
  • 2020 American Transplant Congress

    Dissecting Humoral Alloimmune Sensitization: A Dynamic Interplay of Different Cellular Compartments

    A. Torija, A. Favà, E. Crespo, M. Jarque, M. Meneghini, N. Bolaños, J. Grinyo, O. Bestard

    Kidney transplantation Unit, Bellvitge University Hospital- IDIBELL, L'Hospitalet de Llobregat. Barcelona, Spain

    *Purpose: Humoral alloimmune memory is the main barrier for successful transplantation and is generated by a complex and compartmentalized B-cell immune response. Understanding the role…
  • 2020 American Transplant Congress

    Activated CD27+CD21– Subset Dominate the Memory B Cell Response During Antibody-Mediated Rejection of Kidney Allografts

    K. Louis1, E. Bailly1, C. Macedo1, M. Marrari1, M. Yamada1, P. Randhawa1, A. Zeevi1, C. Lefaucheur2, D. Metes1

    1Surgery, University of Pittsburgh, Pittsburgh, PA, 2Inserm UMR 976, Paris, France

    *Purpose: The role of alloreactive memory B (mB) cells in the pathogenesis of antibody-mediated rejection (ABMR) is increasingly recognized. Yet, a comprehensive characterization of mB…
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