Articles tagged "HLA antibodies"

2020 American Transplant Congress
A Single Centre Report of Renal Transplantation Against a Positive Crossmatch Due to HLA-DP Donor Specific Antibodies without Prior Antibody Removal
Y. Marie¹, T. Key², A. Halawa¹
¹Renal Transplantation, Sheffield Kidney Institute, Sheffield, United Kingdom, ²2.Department of Histocompatibility and Immunogenetics, Sheffield, United Kingdom
*Purpose: In renal transplantation, the clinical effects of donor specific antibodies (DSA) against HLA-DP are unclear. We report successful kidney transplants in three highly sensitised…
2020 American Transplant Congress
Preformed Anti-HLA Donor-Specific Antibodies Immunological Risk Assessment: The Importance of HLA Antibody Locus-Specificity
V. Jucaud¹, A. Babu², D. Briggs³, N. Krishnan⁴, D. Mitchell⁵, M. Everly¹
¹Terasaki Research Institute, Los Angeles, CA, ²University Hospitals Coventry and Warwickshire, Coventry, United Kingdom, ³NHS Blood and Transplant, Birmingham, United Kingdom, ⁴University Hospitals Coventry and Warwickshire NHS Trust, Coventry, United Kingdom, ⁵University of Warwick Medical School, Coventry, United Kingdom
*Purpose: The screening of preformed donor-specific HLA antibodies (pfDSA) by single antigen bead assays has increased the complexity of pre-transplant patient risk stratification. We evaluated…
2020 American Transplant Congress
The Art Rather Than the Science of Non-HLA Antibody Mediated Rejection in Heart Transplantation: A Single Center Experience
A. Alam, S. Mckean, R. Patel, V. Darst, H. Zafar, C. Guerrero, M. Askar, T. Sam, S. Hall
Cardiology, Baylor University Medical Center, Dallas, TX
*Purpose: The role of non-HLA antibodies (Ab) in HLA-DSA negative antibody mediated rejection (AMR) following heart transplant (HTx) remains largely unknown.*Methods: Retrospective analysis of all…
2020 American Transplant Congress
Estimating Alloantibody Levels in Highly-Sensitized Renal Allograft Candidates Using Serial Dilutions
C. Maguire¹, A. R. Tambur¹, C. Schinstock², M. D. Stegall²
¹Northwestern University, Chicago, IL, ²Mayo Clinic, Rochester, MN
*Purpose: Despite the new Kidney Allocation System and Kidney Paired Donation, renal allograft candidates with a >99.9% cPRA still have extremely low rates of transplantation…
2020 American Transplant Congress
A Simple HLA Class II Matching Strategy for the Prediction of De Novo Donor-Specific HLA Antibodies
L. G. Hidalgo¹, I. A. Martinez Juarez², L. Morales-Buenrostro³, S. Shojai⁴, P. Campbell⁴
¹Surgery, University of Wisconsin - Madison, Madison, WI, ²Nephrology, Hospital Angeles Pedregal, Mexico City, Mexico, ³Nephrology, Instituto Nacional de Ciencias Medicas y Nutricion, Mexico City, Mexico, ⁴Medicine, University of Alberta, Edmonton, AB, Canada
*Purpose: In kidney transplantation, degree of HLA Class II mismatch (MM) between donor and recipient drives the risk to develop de novo DSA (dnDSA). New…
2020 American Transplant Congress
Impact of Low Dose Donor Specific Anti-HLA Antibodies between Living Donor versus Deceased Donor Kidney Transplantation
S. Kim¹, S. Lee¹, E. Ko¹, T. Ban², J. Min³, H. Yoon⁴, C. Yang¹, B. Chung¹
¹Internal Medicine, Seoul St. Mary's Hospital, Seoul, Korea, Republic of, ²Internal Medicine, Eunpyeong St. Mary's Hospital, Seoul, Korea, Republic of, ³Internal Medicine, Bucheon St. Mary's Hospital, Seoul, Korea, Republic of, ⁴Internal Medicine, Incheon St. Mary's Hospital, Seoul, Korea, Republic of
*Purpose: Presence of donor specific anti-HLA antibody (HLA-DSA) has significant impact on the short term and long term allograft outcomes after kidney transplantation. However, the…
2020 American Transplant Congress
Evaluating Preformed Donor HLA Reactive T Cells Using PIRCHE-II Algorithm
T. Tomosugi¹, K. Iwasaki², S. Sakamoto¹, A. Kanda¹, K. Futamura¹, M. Okada¹, T. Hiramitsu¹, N. Goto¹, S. Narumi¹, Y. Watarai¹, T. Kobayashi², M. Niemann³, E. Spierings⁴
¹Transplant and Endocrine Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Aichi, Japan, ²Kidney Transplant Surgery, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan, ³PIRCHE AG, Berlin, Germany, ⁴University Medical Center Utrecht, Utrecht, Netherlands
*Purpose: De novo donor-specific HLA antibodies (dnDSA) production involves the indirect allorecognition pathway in which recipient CD4+T cells recognize donor-HLA-derived peptide and recipient HLA class…
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
Liver Transplant Recipients with High DSA at Time of Transplant Do Not Have Increased Rejection or Mortality
A. Demirag¹, B. Rawashdeh¹, S. L. Lennon¹, S. Pelletier¹, J. Iezzoni², K. Khutsisvhili³, S. Shumilina¹, K. Chittum¹, J. Oberholzer¹, P. Lobo⁴
¹Department of Surgery, University of Virginia Medical Cener, Charlottesville, VA, ²Department of Pathology, University of Virginia Medical Cener, Charlottesville, VA, ³Histocompatibility Laboratory, University of Virginia Medical Cener, Charlottesville, VA, ⁴Department of Medicine, University of Virginia Medical Cener, Charlottesville, VA
*Purpose: Currently, there is controversy regarding transplanting livers in setting of high HLA-class ll DSA especially since prior studies demonstrated enhanced acute rejections in this…
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…