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HLA phenotypes and idiopathic nephrotic syndrome in children

H Ruder, K Schärer, V Lenhard

    Proceedings of the European Dialysis and Transplant Association. European Dialysis and Transplant Association
    |January 1, 1983
    PubMed

    Insights

    Human Leukocyte Antigen (HLA) markers DR7 and B8-DR3 are significantly increased in children with idiopathic nephrotic syndrome (INS). These HLA associations suggest a more severe disease course in patients with these genetic markers.

    Area of Science:

    • Immunogenetics
    • Pediatric Nephrology
    • Human Leukocyte Antigen (HLA) System

    Background:

    • Idiopathic nephrotic syndrome (INS) is a complex kidney disorder in children.
    • Genetic factors are implicated in the pathogenesis of INS.
    • Human Leukocyte Antigen (HLA) antigens are crucial for immune system function.

    Purpose of the Study:

    • To investigate the association between HLA-A, B, and DR antigens and idiopathic nephrotic syndrome in children.
    • To determine if specific HLA alleles correlate with disease severity or steroid resistance in INS.

    Main Methods:

    • HLA typing for HLA-A, B, and DR antigens was performed on 94 children with INS.
    • A subset of 17 patients had steroid-resistant disease and focal segmental glomerulosclerosis (FSGS).
    • Patient HLA antigen frequencies were compared to healthy controls.

    Main Results:

    • A significant increase in DR7 (58% vs 18%) and B8-DR3 (27% vs 5%) was observed in children with INS compared to controls.
    • The combined presence of DR7 and B8-DR3 was found in 14% of patients versus none of the controls (relative risk 15.2).
    • Patients positive for B8-DR3 and DR7 exhibited a more severe disease course.

    Conclusions:

    • Specific HLA antigens, particularly DR7 and B8-DR3, are strongly associated with idiopathic nephrotic syndrome in children.
    • The presence of these HLA markers may indicate a predisposition to a more severe form of INS.
    • Further research into the immunogenetic basis of INS could inform diagnostic and therapeutic strategies.

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