Articles tagged "Epitopes"

2020 American Transplant Congress
Is the Epitope Mismatch Load Enough to Identify HLA-DQ Mismatches with a Low Risk for De Novo DSA Development?
V. Jucaud¹, M. Stegall², C. Schinstock², R. Heilman³, L. Rebellato⁴, M. Samaniego-Picota⁵, D. Leeser⁴, M. Gandhi², J. Beaumont¹, M. Everly¹
¹Terasaki Research Institute, Los Angeles, CA, ²Mayo Clinic, Rochester, MN, ³Mayo Clinic, Phoenix, AZ, ⁴East Carolina University, Greenville, NC, ⁵Henry Ford Transplant Institute, Detroit, MI
*Purpose: The development of de novo donor-specific anti-HLA antibodies (dnDSA) remains a major risk factor for poor long-term kidney allograft outcomes. In particular, anti-HLA-DQ dnDSAs,…
2020 American Transplant Congress
HLA Mismatch Immunogenicity: Are We Predicating Mismatches That Induce De Novo DSA Development or That Do Not?
V. Jucaud¹, L. Rebellato², K. Briley², C. Haisch², S. Kendrick³, H. Jones³, K. Mclawhorn³, D. Leeser², M. Everly¹
¹Terasaki Research Institute, Los Angeles, CA, ²East Carolina University, Greenville, NC, ³Eastern Nephrology Associates, Greenville, NC
*Purpose: Although the development of de novo donor-specific anti-HLA antibodies (dnDSA) remains a major risk factor for poor long-term kidney allograft outcomes, the prediction of…
2020 American Transplant Congress
Extended HLA Typing of Kidney Transplant Pairs is Necessary to Assign Presence of Donor-Specific Anti-HLA Antibodies
A. Senev¹, V. Van Sandt², M. Naesens¹, M. Emonds¹
¹Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium, ²HILA, Rode Kruis Vlaanderen, Leuven, Belgium
*Purpose: The need for extended high-resolution (HR) HLA genotyping in solid organ transplantation is currently widely debated due to higher costs and questioned clinical importance.…
2020 American Transplant Congress
The Eplet-Mismatch Landscape in Kidney Patients and Deceased Donors in British Columbia
J. Tran¹, O. Gunther², J. Lan¹, M. Kadatz¹, R. Sapir-Pichhadze³, P. A. Keown¹
¹University of British Columbia, Vancouver, BC, Canada, ²Gunther Analytics, Vancouver, BC, Canada, ³McGill University, Montreal, QC, Canada
*Purpose: Minimizing quantitative donor/recipient mismatch at the HLA epitope level may optimize graft outcomes in renal transplantation, but the degree to which optimal matching can…
2020 American Transplant Congress
Identification of Eplet Mismatches Associated with De Novo Donor Specific HLA Antibody in a Pediatric Kidney Transplant Cohort
O. Charnaya, J. Jones, P. Chiang, M. C. Philogene, J. Garonzik-Wang
Johns Hopkins University, Baltimore, MD
*Purpose: While optimizing immunological matching will decrease the risk of de novo donor specific HLA antibody (dnDSA) formation and improve long-term graft function in pediatric…
2020 American Transplant Congress
Can HLA-DQ Molecular Mismatch Analysis Be Used to Predict Generation of De Novo Donor-Specific Antibody at an Individual Patient Level?
D. Pinelli¹, M. Casillas Abundis¹, R. Hod Dvorai², H. McDowell¹, A. R. Tambur¹
¹Northwestern University, Chicago, IL, ²SUNY Upstate Medical University, Syracuse, NY
*Purpose: De novo donor-specific antibodies (dnDSA), especially to HLA-DQ, are one of the leading causes of late kidney graft failure. Many investigators have attempted to…
2020 American Transplant Congress
The Impact of Epitope Mismatch Load and Shared Targeting Epitopes between De Novo Donor Specific Antibody (DSA) and Non-DSA Third Party HLA Antibody on Lung Transplantation Outcomes
A. Zhang¹, D. Good¹, D. Thomas¹, J. Allen¹, K. McCurry², M. Budev²
¹Allogen Laboratories, Cleveland Clinic, Cleveland, OH, ²Cleveland Clinic, Cleveland, OH
*Purpose: Rapid advancements in HLA typing and antibody identification technologies allow for enhanced HLA compatibility assessment at the epitope level to aid in the reduction…
2020 American Transplant Congress
Immune-Mediated Injury and Eplet Mismatches – Profiling Population-Level Interactions
H. Mohammadhassanzadeh¹, W. Zhang², W. Klement³, H. Gebel⁴, P. Keown⁵, K. Oualkacha⁶, R. Sapir-Pichhadze¹
¹Medicine, McGill University, Montreal, QC, Canada, ²McGill University, Montreal, QC, Canada, ³Organ Donation and Transplantation, Canadian Blood Services, Ottawa, ON, Canada, ⁴Emory University Hospital, Atlanta, GA, ⁵Medicine, University of British Columbia, Vancouver, BC, Canada, ⁶Université du Québec À Montréal, Montreal, QC, Canada
*Purpose: HLA genes are in linkage disequilibrium with each other. Sequence defined HLA targets (eplets) are associated with alleles and may be shared within and…
2020 American Transplant Congress
Molecular Features of HLA Mismatches as Predictors of De Novo DSA Development: A Single Center Experience
V. Jucaud¹, L. Rebellato², K. Briley², C. Haisch², S. Kendrick³, H. Jones³, K. Mclawhorn³, D. Leeser², M. Everly¹
¹Terasaki Research Institute, Los Angeles, CA, ²East Carolina University, Greenville, NC, ³Eastern Nephrology Associates, Greenville, NC
*Purpose: Several molecular features (MoFs) of HLA mismatches (MMs) are currently used to predict the development of de novo donor-specific anti-HLA antibodies (dnDSA). The purpose…
2020 American Transplant Congress
Predictability of Eplet Mismatch to Acute Rejection in Low Level HLA Antigen Mismatched Kidney Transplantation: Analysis of Korean Organ Transplantation Registry (KOTRY) Data
J. Jeong¹, Y. Hong¹, Y. Park², I. Park³, J. Park⁴, D. Chae⁵, J. Yang⁶, C. Ahn⁵, B. G. Park⁷
¹Seoul National University Bundang Hospital, Seongnam, Korea, Republic of, ²Gachon University, Incheon, Korea, Republic of, ³Ajou University School of Medicine, Suwon, Korea, Republic of, ⁴Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of, ⁵Seoul National University College of Medicine, Seoul, Korea, Republic of, ⁶Seoul National University Hospital, Seoul, Korea, Republic of, ⁷Korea University Guro Hospital, Seoul, Korea, Republic of
*Purpose: Epitope matching has been shown to better predict allograft survival and development of de novo donor specific antibodies. In previous study, the number of…