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The UNOS Renal Transplant Registry.

J Michael Cecka1

  • 1UCLA Immunogenetics Center, Department of Pathology, University of California Los Angeles, Los Angeles, California, USA.

Clinical Transplants
|September 16, 2003
PubMed
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Kidney transplant survival rates have improved, with living donor transplants showing better outcomes than cadaveric ones. HLA matching remains crucial for long-term graft survival, even with advancements in immunosuppression.

Area of Science:

  • Nephrology
  • Transplantation Immunology
  • Public Health

Background:

  • Kidney transplantation is a vital treatment for end-stage renal disease.
  • Graft survival rates have historically varied based on donor type and recipient factors.
  • Advancements in immunosuppression and donor selection criteria aim to improve outcomes.

Purpose of the Study:

  • To analyze trends and outcomes of kidney transplantation using UNOS Renal Transplant Registry data from 1998-2001.
  • To evaluate the impact of donor type, donor characteristics, and HLA matching on graft survival.
  • To assess changes in kidney transplant practices, including the rise of living donor and expanded criteria donor transplants.

Main Methods:

  • Retrospective analysis of 31,720 cadaveric and 14,162 living donor kidney transplants reported to the UNOS Registry (1998-2001).

Related Experiment Videos

  • Comparison of graft survival rates between different donor types, repeat vs. first transplants, and expanded criteria donors vs. standard donors.
  • Evaluation of the impact of HLA-A, -B, and -DR matching on graft survival over time.
  • Analysis of trends in living donor transplant types and surgical approaches.

    • Main Results:

    • One-year graft survival: 89% (cadaveric) vs. 95% (living donor). Projected 10-year survival: 51% (cadaveric) vs. 68% (living donor).
    • Repeat transplants had lower 3-year survival (73-77%) than first transplants (79%).
    • Expanded criteria donor (ECD) kidneys had poorer 3-year survival (68%) and half-life (7.1 years) compared to normal donors (81% and 11.9 years).
    • HLA matching at HLA-A, -B, and -DR loci significantly improved projected 10-year graft survival by 16% compared to mismatched grafts.
    • Living donor transplants, including HLA-disparate ones, showed high graft survival rates comparable to related donors.

    Conclusions:

    • Significant improvements in kidney transplant outcomes observed compared to earlier periods.
    • Living donor kidney transplantation offers superior graft survival rates.
    • HLA matching remains a critical determinant of long-term kidney graft survival.
    • Expanded criteria donors and repeat transplants present ongoing challenges for graft longevity.