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Related Experiment Videos

HLA-B27 associated arthropathies.

T M Schumacher, H K Genant, M J Kellet

    Radiology
    |February 1, 1978
    PubMed
    Summary
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    The human leukocyte antigen B27 (HLA-B27) is strongly associated with ankylosing spondylitis and Reiter's arthritis. HLA-B27 positivity correlated with severe spondylitis in psoriatic arthritis patients.

    Area of Science:

    • Immunogenetics
    • Rheumatology
    • Clinical Medicine

    Background:

    • The human leukocyte antigen B27 (HLA-B27) is a key histocompatibility antigen.
    • Genetic factors, particularly HLA-B27, are implicated in various spondylitic disorders.

    Purpose of the Study:

    • To investigate the association between HLA-B27 and specific radiographic findings in spondylitic disorders.
    • To determine if HLA-B27 status predicts radiographic changes and vice versa.

    Main Methods:

    • Prevalence of HLA-B27 antigen was determined in patients with ankylosing spondylitis, Reiter's arthritis, psoriatic arthritis, and ankylosing hyperostosis.
    • Radiographic findings were analyzed in relation to HLA-B27 positivity.

    Main Results:

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  • HLA-B27 prevalence was 100% in ankylosing spondylitis, 93% in Reiter's arthritis, 55% in psoriatic arthritis, and 12% in ankylosing hyperostosis.
  • Severe spondylitis in psoriatic arthritis was the only radiographic finding specifically associated with HLA-B27 positivity.

    • Conclusions:

    • HLA-B27 is highly prevalent in ankylosing spondylitis and Reiter's arthritis.
    • The association between HLA-B27 and radiographic severity is specific to spondylitis in psoriatic arthritis.