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Related Experiment Videos

Automated routine HLA-B27 typing by flow cytometry

W M Reynolds1, P R Evans, P J Wilson

  • 1Wessex Histocompatibility Group, Southampton University NHS Hospital Trust, UK.

Journal of Immunological Methods
|October 16, 1996
PubMed
Summary

A new flow cytometry assay for Human Leukocyte Antigen B27 (HLA-B27) typing provides rapid and automated results. This method aids in diagnosing ankylosing spondylitis, with over 2000 samples tested.

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Area of Science:

  • Immunogenetics
  • Clinical Immunology
  • Flow Cytometry

Background:

  • Human Leukocyte Antigen B27 (HLA-B27) is a crucial genetic marker in diagnosing ankylosing spondylitis.
  • Traditional HLA-B27 typing methods can be time-consuming and complex.
  • There is a growing need for efficient and automated HLA-B27 testing.

Purpose of the Study:

  • To develop and validate a rapid, automated flow cytometric assay for HLA-B27 typing.
  • To assess the performance of the assay in a routine clinical setting.
  • To analyze the prevalence of HLA-B27 and its subtypes in a large patient cohort.

Main Methods:

  • Development of a flow cytometry assay using whole blood and the FD705 monoclonal antibody specific for HLA-B27.
  • Testing of 2093 patient samples over a two-year period.

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  • Inclusion of samples from individuals with the HLA-B2708 subtype for further analysis.

    • Main Results:

    • The assay demonstrated high throughput and automation capabilities for HLA-B27 typing.
    • 21.6% of samples were clearly HLA-B27 positive, 73.2% were negative, and 5.2% required further investigation.
    • Initial data on the newly described HLA-B2708 subtype was also collected.

    Conclusions:

    • The developed flow cytometric assay is a rapid and reliable method for routine HLA-B27 typing.
    • This automated assay can improve the efficiency of diagnosing conditions like ankylosing spondylitis.
    • The study provides valuable data on HLA-B27 prevalence and highlights the need for subtype analysis.