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Related Experiment Videos

The changing role of HLA matching.

J M Cecka

    Clinical Transplants
    |January 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    Optimizing human leukocyte antigen (HLA) matching, particularly for HLA-B and -DR loci, significantly improves kidney transplant graft survival rates. Well-matched transplants, especially with cyclosporine, show higher success, emphasizing the need for better donor-recipient matching strategies.

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    HLA matching for organ transplantation…why not?

    International journal of immunogenetics·2010

    Area of Science:

    • Transplantation immunology
    • Histocompatibility
    • Nephrology

    Background:

    • Historically, human leukocyte antigen (HLA) matching has been crucial for kidney transplant success, with significant differences in graft survival observed based on HLA identity and haplotype matching.
    • Pre-cyclosporine era data showed a clear benefit of HLA-identical living-related donor transplants over mismatched ones, with survival differences widening over time.
    • Cadaver donor kidney transplant outcomes also demonstrated the importance of HLA-A,B antigen matching, with better survival for less mismatched grafts.

    Purpose of the Study:

    • To evaluate the impact of HLA matching on kidney transplant outcomes, including graft survival and patient survival, across different eras and donor types.
    • To assess the influence of specific HLA loci (A, B, DR, C) on transplant success.
    • To analyze the effect of sensitization on HLA matching and transplant outcomes, and to explore strategies for improving the number of well-matched transplants.

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    Main Methods:

    • Retrospective analysis of kidney transplant recipient data, comparing graft and patient survival rates based on varying degrees of HLA matching (HLA-A, B, DR, C) and donor types (living-related vs. cadaver).
    • Evaluation of sensitization incidence and its correlation with HLA mismatching and retransplantation.
    • Assessment of trends in HLA matching practices, particularly with the introduction of cyclosporine.

    Main Results:

    • HLA-A,B matching significantly impacts graft and patient survival, with better outcomes for matched grafts.
    • Zero HLA-B,DR mismatched cadaver transplants showed a 90% one-year graft survival rate when combined with cyclosporine therapy.
    • Sensitization occurred more frequently after rejecting mismatched grafts, and while sensitized recipients often received better-matched grafts, HLA-DR matching was unaffected by sensitization.

    Conclusions:

    • HLA-B and -DR locus matching demonstrates a more substantial impact on cadaver kidney graft survival than matching at HLA-A,B or HLA-DR loci individually.
    • The introduction of cyclosporine has coincided with an increase in poorly matched transplants, necessitating strategies like sharing kidneys from homozygous donors to improve matching.
    • Optimizing HLA-B,DR matching is critical for enhancing long-term kidney transplant success, particularly in the context of current immunosuppressive therapies.