Articles tagged "Immunogenicity"

2020 American Transplant Congress
T Cell Activation by Allogeneic EVs and Allogeneic MHC Cross-Dressed Cells In Vitro and In Vivo
A. Prunevieille¹, B. Gonzalez-Nolasco¹, G. Benichou¹, N. Mooney², A. Colleen³
¹Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, ²INSERM, Paris, France, ³Boston College, Boston, MA
*Purpose: The recognition of donor-MHC molecules by recipient T cells triggers the immune response leading to rejection of allografts. Our recent studies have documented the…
2020 American Transplant Congress
Effect of Simultaneous Presence of Anti-Blood Group A/B and -HLA Antibodies on Clinical Outcomes in Kidney Transplantation Across Positive Crossmatch: A Nationwide Cohort Study
H. Kwon, Y. Ko, D. Han
Department of General Surgery, Asan Medical Center, Seoul, Korea, Republic of
*Purpose: ABO-incompatible (ABOi) and positive crossmatch (XM) kidney transplantation (KT) have been considered immunologically challenging. The present study analyzed the clinical outcomes in XM positive…
2020 American Transplant Congress
Ranking Eplet Mismatches as Predictors of Graft Failure
W. Zhang¹, H. Mohammadhassanzadeh¹, K. Oualkacha², H. Gebel³, W. Klement⁴, R. Sapir-Pichhadze¹
¹McGill University, Montreal, QC, Canada, ²UQAM, Montreal, QC, Canada, ³Emory University Hospital, Atlanta, GA, ⁴Canadian Blood Services, Ottawa, ON, Canada
*Purpose: Donor:recipient matching at the level of sequence defined HLA targets (eplets) is being promoted as a biologically sound strategy to prevent graft failure. Because…
2020 American Transplant Congress
Donor Kidney Perfusion Fluid Extracellular Vesicles as Markers of Graft Function
A. K. Rutman, S. Negi, N. Saberi, J. Tchervenkov, S. Paraskevas
Research Institute of the McGill University Health Institute, Montreal, QC, Canada
*Purpose: Kidney transplantation is a life-saving treatment for many patients with end-stage renal failure. Recently, machine perfusion of kidneys prior to transplantation has emerged as…
2020 American Transplant Congress
HLA Molecular Mismatch is an Independent Correlate of T-Cell Mediated Rejection and Potential Prognostic Biomarker in Renal Transplantation
C. Wiebe¹, D. Pochinco², I. W. Gibson³, J. Ho¹, P. Birk⁴, A. Goldberg⁴, M. Karpinski⁵, J. Shaw⁵, R. N. David⁵, P. W. Nickerson¹
¹Medicine and Immunology, University of Manitoba, Winnipeg, MB, Canada, ²Shared Health Services, Winnipeg, MB, Canada, ³Pathology, University of Manitoba, Winnipeg, MB, Canada, ⁴Pediatrics and Child Health, University of Manitoba, Winnipeg, MB, Canada, ⁵Medicine, University of Manitoba, Winnipeg, MB, Canada
*Purpose: HLA molecular mismatch alloimmune risk categorization has correlated with de novo donor-specific antibody (dnDSA) development, however, correlation with T-cell mediated rejection (TCMR) phenotypes is…
2020 American Transplant Congress
Impact of Eplet Mismatches on the Risk of Graft Loss: Not All Eplets are Created Equal
H. Mohammadhassanzadeh¹, W. Klement², H. Gebel³, B. Foster⁴, P. Keown⁵, K. Oualkacha⁶, R. Sapir-Pichhadze¹
¹Medicine, McGill University, Montreal, QC, Canada, ²Organ Donation and Transplantation, Canadian Blood Services, Ottawa, ON, Canada, ³Emory University Hospital, Atlanta, GA, ⁴Montreal Children's Hospital, Montreal, QC, Canada, ⁵Medicine, University of British Columbia, Vancouver, BC, Canada, ⁶Université du Québec À Montréal, Montreal, QC, Canada
*Purpose: To mitigate risks related to HLA incompatibility, we assessed whether some unique sequence defined HLA targets (eplets) are associated with graft failure while others…
2020 American Transplant Congress
Dual Donor-Recipient Intervention with Recombinant Human C1 Inhibitor Prevents Delayed Graft Function and Reduces Antibody-Mediated Rejection after Kidney Transplantation in Non-Human Primates
C. Blanton¹, J. Reyes¹, M. Eerhart¹, P. Chlebeck¹, M. Springer¹, Y. Ponstein², E. vanAmersfoort², J. Torrealba³, Y. Yankol¹, A. D’Alessandro¹, L. Fernandez¹
¹University of Wisconsin, Madison, WI, ²Pharming Technologies BV, Leiden, Netherlands, ³Pathology, UTSouthwestern, Dallas, TX
*Purpose: Patients with delayed graft function (DGF) are at increased risk for rejection and inferior graft survival. Complement activation during brain death and ischemia reperfusion…
2020 American Transplant Congress
Epitope Analysis of Complement-Binding De Novo Donor-Specific HLA Class II Antibody
K. Yamanaka, M. Hashimoto, T. Kinoshita, Y. Fujita, S. Matsumura, T. Imanaka, A. Taniguchi, T. Yoshida, H. Kishikawa
Department of Kidney Transplantation Center, Hyogo Prefectural Nishinomiya Hospital, Nishinomiya, Hyogo, Japan
*Purpose: Patients with de novo donor specific antibody (dnDSA) after kidney transplantation have a poorer prognosis than patients without dnDSA. Meanwhile, patients with dnDSA do…
2020 American Transplant Congress
Impact of Catch-Up Vaccinations on Anti-HLA Antibody Responses in Pediatric Kidney Transplant Candidates
H. Sweiss¹, J. Lyons², R. Hall¹, K. Hitchman³, D. Ranch⁴, E. Kincaide¹, B. Crowther⁵
¹University Health System, San Antonio, The University of Texas Health Science Center at San Antonio, San Antonio, TX, ²Loyola University Medical Center, Chicago, IL, ³University Health System, San Antonio, TX, ⁴The University of Texas Health Science Center at San Antonio, San Antonio, TX, ⁵University of Colorado Health, Aurora, CO
*Purpose: Evaluate antibody (Ab) response after catch-up vaccinations in pediatric kidney transplant candidates (PKTC).*Methods: A single center retrospective review of PKTC less than or equal…
2020 American Transplant Congress
Donor Intervention and Recipient Treatment with Recombinant Human C1 Inhibitor Prevents Delayed Graft Function in a Non-Human Primate Model of Kidney Transplantation
J. A. Reyes¹, C. Blanton¹, M. Eerhart¹, P. Chlebeck¹, M. Springer¹, Y. Ponstein², E. van Amersfoort², J. Torrealba³, Y. Yankol¹, A. D'Allessandro¹, L. Fernandez¹
¹Surgery, University of Wisconsin, Madison, WI, ²Pharming Technologies BV, Leiden, Netherlands, ³Pathology, UT Soutwestern, Dallas, TX
*Purpose: There is currently no FDA-approved treatment to prevent delayed graft function (DGF) in kidney transplantation. We have shown that donor or recipient treatment with…

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