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Erschienen in: Current Rheumatology Reports 12/2023

11.11.2023

HLA-B*27 and Ankylosing Spondylitis: 50 Years of Insights and Discoveries

verfasst von: Muhammad A. Khan

Erschienen in: Current Rheumatology Reports | Ausgabe 12/2023

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Abstract

Purpose of Review

To commemorate the 50th anniversary of the groundbreaking discovery of a remarkably strong association between HLA-B*27 and ankylosing spondylitis (AS).

Recent Findings

In addition to HLA-B*27, more than 116 other recognized genetic risk variants have been identified, while epigenetic factors largely remain unexplored in this context. Among patients with AS who carry the HLA-B*27 gene, clonally expanded CD8 + T cells can be found in their bloodstream and within inflamed tissues. Moreover, the α and β chain motifs of these T-cell receptors demonstrate a distinct affinity for certain self- and microbial-derived peptides, leading to an autoimmune response that ultimately results in the onset of the disease. These distinctive peptide-binding and presentation characteristics are a hallmark of the disease-associated HLA-B*27:05 subtype but are absent in HLA-B*27:09, a subtype not associated with the disease, differing by only a single amino acid. This discovery represents a significant advancement in unraveling the 50-year-old puzzle of how HLA-B*27 contributes to the development of AS.

Summary

These findings will significantly accelerate the process of identifying peptides, both self- and microbial-derived, that instigate autoimmunity. This, in return, will pave the way for the development of more accurate and effective targeted treatments. Moreover, the discovery of improved biomarkers, in conjunction with the emerging technology of electric field molecular fingerprinting, has the potential to greatly bolster early diagnosis capabilities. A very recently published groundbreak paper underscores the remarkable effectiveness of targeting and eliminating disease-causing T cells in a HLA-B*27 patients with AS. This pivotal advancement not only signifies a paradigm shift but also bolsters the potential for preventing the disease in individuals carrying high-risk genetic variants.
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Metadaten
Titel
HLA-B*27 and Ankylosing Spondylitis: 50 Years of Insights and Discoveries
verfasst von
Muhammad A. Khan
Publikationsdatum
11.11.2023
Verlag
Springer US
Erschienen in
Current Rheumatology Reports / Ausgabe 12/2023
Print ISSN: 1523-3774
Elektronische ISSN: 1534-6307
DOI
https://doi.org/10.1007/s11926-023-01118-5

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