Articles tagged "Epitopes"

2018 American Transplant Congress
Epitope/Eplet Mismatch in Pediatric Renal Transplantation and Development of Donor Specific Antibody
R. George,¹ H. Sullivan,² R. Garro,¹ P. Winterberg,¹ B. Warshaw,¹ H. Gebel,² R. Bray.²
¹Pediatric Nephrology, Emory University & Children's Healthcare of Atlanta, Atlanta, GA; ²Dept. of Pathology, Emory Transplant Center, Emory University, Atlanta, GA.
Background: De-novo donor specific antibody (DSA) is one of the strongest independent predictors of graft loss with HLA mismatching being a major risk factor for…
2017 American Transplant Congress
Kidney Transplant Rejection Associated with DQ Eplet Mismatches.
S. Chakola,¹ P. Warner,² N. Andeen,³ B. Najafian,³ N. Leca,¹ C. Blosser.¹
¹Medicine, University of Washington, Seattle, WA; ²Bloodworks Northwest, Seattle, WA; ³Pathology, University of Washington, Seattle, WA
The presence of anti-HLA antibodies is associated with acute rejection, allograft dysfunction and earlier graft loss. HLA antibodies are recognized as being specific to these…
2017 American Transplant Congress
Precise Antibody Characterization Using Multiple Solid Phase Assay Platforms Is Critical for Accurate Virtual Crossmatching.
D. Li,¹ O. Timofeeva,¹ M. Awwad,¹ C. Cody,² S. Najjar,² S. Rosen-Bronson.¹
¹Histocompatibility Laboratory, MedStar Georgetown University Hospital, Washington, DC; ²MedStar Heart Institute, Washington Hospital Center, Washington, DC
Purpose: Virtual crossmatch (VXM) has been utilized in heart transplant (txp) for more than a decade. Many labs base the VXM solely on single antigen…
2017 American Transplant Congress
Shared Epitopes Contribute to Accumulation of Highly Sensitized Patients in Kidney Paired Donation Program.
S. Stepkowski, B. Mierzejewska, C. Baum, D. Bekbolsynov, R. Brunner, J. Kopke, S. Rees, M. Rees.
University of Toledo, Toledo, OH
Introduction: Kidney Paired Donation (KPD) programs suffer from the accumulation of highly sensitized patients. We evaluated the sensitization patterns in our KPD program-by comparison of…
2017 American Transplant Congress
HLA Eplet Mismatches Predict DSA Formation, Graft Survival, and Re-Transplantation Rate in Pediatric Renal Transplantation.
M. Sypek,^1,2 S. Hiho,³ L. Cantwell,³ P. Hughes,² A. Le Page,⁴ J. Kausman.¹
¹Royal Children's Hospital, Melbourne, Australia; ²Royal Melbourne Hospital, Melbourne, Australia; ³Victorian Transplant and Immunogenetics Service, Melbourne, Australia; ⁴Monash Children's Hospital, Melbourne, Australia
The potential benefits of HLA epitope based matching are greatest for pediatric recipients, however, there is little published data on the association of epitope mismatches…
2017 American Transplant Congress
Donor Recipient Matching Based on HLA Epitopes Improves Outcome in Kidney Transplant Recipients.
O. Staeck,¹ M. Niemann,³ F. Halleck,¹ D. Khadzhynov,¹ C. Schönemann,² P. Reinke,¹ E. Spierings,⁴ K. Budde,¹ N. Lachmann.²
¹Nephrology, Charité Universitaetsmedizin, Berlin, Germany; ²HLA Laboratory, Charité Universitaetsmedizin, Berlin, Germany; ³PIRCHE, Berlin, Germany; ⁴Laboratory of Translational Immunology, UMC Utrecht, Utrecht, Netherlands
Background: HLA mismatches of the donor and recipient causing de novo donor-specific HLA antibodies (dnDSA) are a risk factor for immunologic complications and poor graft…
2016 American Transplant Congress
Should HLA DR and DQ Eplet Mismatching Replace Traditional DR and DQ Mismatching for Deceased Donor Offers in Pediatric Renal Transplantation?
C. Bryan, V. Chadha, B. Warady.
Midwest Transplant Network, Kansas City, KS; Nephrology, Childrens Mercy Hospital, Kansas City, MO; Nephrology, Childrens Mercy Hospital, Kansas City, MO.
Introduction. It is now appreciated that greater HLA DR mismatching of the first pediatric kidney transplantation is associated with higher degrees of sensitization, lower rates…
2016 American Transplant Congress
The Distance Between Us: The Landscape of Recipient-Specific Loss-of-Function in Solid Organ Transplantation and Association with Rejection-Free Graft Survival.
B. Cole,^1,2,5 J. van Setten,^3,5 B. Keating.^1,4,5
¹Department of Surgery, The Penn Transplant Institute, Philadelphia, PA; ²Center for Clinical Epidemiology and Biostatistics, The Institute for Biomedical Informatics, Philadelphia, PA; ³Department of Medical Genetics, University Medical Center Utrecht, Utrecht, Netherlands; ⁴Department of Surgery, Division of Transplant, the Children's Hospital of Philadelphia, Philadelphia, PA; ⁵The Omics Working Group, iGeneTRAiN Consortium, Philadelphia, PA.
Purpose: This study aims to comprehensively identify genes that are inactivated in both copies in transplant recipients but not in their respective donors, uncovering a…
2015 American Transplant Congress
DQB1 Epitope Matching Predicts the Development of De Novo DSA and Antibody Mediated Rejection
M. Willicombe,¹ M. Blow,² P. Brookes,² E. Santos,² D. Taube.¹
¹Imperial College Kidney and Transplant Centre, Hammersmith Hospital, London, United Kingdom; ²H&I, Hammersmith Hospital, London, United Kingdom.
HLA DQ antibodies are the commonest de novo [DN] DSA specificity seen post renal transplantation. Their presence is associated with antibody mediated injury and allograft…
2015 American Transplant Congress
The Synergistic Effect of Class II HLA Epitope-Mismatch and Non-Adherence on Acute Rejection and Graft Survival
C. Wiebe,^1,2 T. Nevins,³ W. Robiner,^3,4 W. Thomas,⁵ A. Matas,⁶ P. Nickerson.^1,2,8
¹Medicine, University of Manitoba, Winnipeg, MB, Canada; ²Transplant Immunology, Diagnostic Services of Manitoba, Winnipeg, MB, Canada; ³Pediatrics, University of Minnesota, Minneapolis, MN; ⁴Medicine, University of Minnesota, Minneapolis, MN; ⁵Public Health, University of Minnesota, Minneapolis, MN; ⁶Surgery, University of Minnesota, Minneapolis, MN; ⁷Immunology, University of Manitoba, Winnipeg, MB, Canada.
Predicting long-term outcomes in renal transplant recipients is essential to optimize medical therapy and determine the frequency of post-transplant pathologic and serologic monitoring. Non-adherence and…