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Related Concept Videos

Kidney Transplant I: Introduction01:28

Kidney Transplant I: Introduction

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A kidney transplant is a surgical approach that involves replacing a non-functioning kidney with a healthy one from a donor. This procedure is often a treatment option for end-stage renal disease (ESRD) patients. The method requires careful recipient selection, including evaluating various medical and psychosocial factors. These criteria vary between transplant centers but generally include assessments of the patient's overall health, adherence to medical recommendations, and lifestyle...
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Bone Marrow Sampling and Transplants01:22

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Bone marrow transplant is a potential cure for several diseases, including cancer and specific genetic disorders. Notably, this procedure is applicable for patients suffering from aplastic anemia, certain types of leukemia, severe combined immunodeficiency disease (SCID), Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, thalassemia, sickle-cell disease, and certain cancers.
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Kidney Transplant II: Surgical Procedure01:26

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Preoperative ManagementThe primary goals of preoperative management in kidney transplantation are to optimize the patient’s metabolic state and prepare them for surgery through diet adjustments, necessary dialysis, and tailored medical treatment. This phase also involves comprehensive infection screening and patient education about the surgical procedure and postoperative care to improve outcomes and adherence.Medical ManagementA comprehensive evaluation is required for both the living...
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Tissue Transplantation01:24

Tissue Transplantation

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Tissue transplantation is a significant medical procedure involving the transfer of cells, tissues, or organs from a donor to a recipient, with the primary aim of restoring lost functions. This procedure is crucial in treating a broad spectrum of diseases, including kidney diseases, liver failure, heart disease, and certain types of cancers.
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...
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Related Experiment Video

Updated: Dec 18, 2025

Personalized Peptide Arrays for Detection of HLA Alloantibodies in Organ Transplantation
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Stem cell donor HLA typing improves CPRA in kidney allocation.

Evan P Kransdorf1, Marcelo J Pando2, Darren Stewart3

  • 1Cedars-Sinai Medical Center, Smidt Heart Institute, Los Angeles, California, USA.

American Journal of Transplantation : Official Journal of the American Society of Transplantation and the American Society of Transplant Surgeons
|June 20, 2020
PubMed
Summary

A new panel using human leukocyte antigen (HLA) data from stem cell donors offers comparable accuracy for calculating panel reactive antibody (CPRA) values in kidney allocation. This approach may improve equity for highly sensitized transplant candidates.

Keywords:
Organ Procurement and Transplantation Network (OPTN)United Network for Organ Sharing (UNOS)clinical research/practicehealth services and outcomes researchhistocompatibilitykidney transplantation/nephrologyorgan allocationorgan procurement and allocationpanel reactive antibody (PRA)sensitization

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Area of Science:

  • Immunogenetics
  • Transplantation Science
  • Organ Allocation Systems

Background:

  • The current Organ Procurement and Transplantation Network (OPTN) Kidney Allocation System prioritizes sensitized candidates using panel reactive antibody (CPRA) values.
  • The reference panel used for CPRA calculation by the United Network for Organ Sharing (UNOS) has known limitations.

Purpose of the Study:

  • To derive and validate a novel human leukocyte antigen (HLA) haplotype reference panel using data from the National Marrow Donor Program (NMDP).
  • To compare the accuracy of CPRA values generated from the NMDP panel (NMDP-CPRA) against the current UNOS panel (UNOS-CPRA) for kidney allocation.

Main Methods:

  • A novel HLA haplotype reference panel was derived from the NMDP HLA haplotype data set.
  • CPRA values generated using the NMDP panel were compared to those from the UNOS panel.
  • Accuracy was assessed using predicted and actual deceased donor kidney offers for 24,282 candidates.

Main Results:

  • Overall accuracy for kidney offers was similar between NMDP-CPRA and UNOS-CPRA.
  • NMDP-CPRA demonstrated slightly higher accuracy for candidates in highly sensitized CPRA categories.
  • Deviations in linkage disequilibrium and the smaller UNOS panel size were identified as contributing factors.

Conclusions:

  • HLA data from stem cell donors provide comparable CPRA values to those from kidney donors.
  • The NMDP-derived panel addresses limitations of the current UNOS reference panel.
  • Utilizing stem cell donor data as a reference panel could enhance equity in kidney transplant allocation.