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HLA-DR locus antigens in polymyalgia rheumatica and giant cell arteritis

K T Calamia, S B Moore, L R Elveback

    The Journal of Rheumatology
    |November 1, 1981
    PubMed

    Insights

    Giant cell arteritis and polymyalgia rheumatica patients showed higher frequencies of HLA-DR4 and HLA-DRW6 antigens. However, these differences were not statistically significant in the overall patient group or subgroups.

    Area of Science:

    • Immunogenetics
    • Rheumatology
    • Vascular Inflammation

    Background:

    • Giant cell arteritis (GCA) and polymyalgia rheumatica (PMR) are inflammatory conditions.
    • The human leukocyte antigen (HLA) system plays a role in immune responses and disease susceptibility.

    Purpose of the Study:

    • To investigate the association between HLA-DR locus antigens and GCA/PMR.

    Main Methods:

    • Human leukocyte antigen (HLA)-DR typing was performed on 69 patients diagnosed with GCA, PMR, or both.
    • Antigen frequencies in patients were compared to normal population frequencies.

    Main Results:

    • Increased frequencies of HLA-DR4 and HLA-DRW6 were observed in the patient cohort.
    • These observed differences in HLA-DR4 and HLA-DRW6 frequencies did not reach statistical significance in the total group or when stratified by PMR presence.

    Conclusions:

    • While HLA-DR4 and HLA-DRW6 may be associated with GCA and PMR, the current study did not find statistically significant evidence for this association in the studied cohort.
    • Further research with larger sample sizes may be warranted to clarify the role of specific HLA-DR antigens in these conditions.

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