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Chinese Journal of Joint Surgery(Electronic Edition) ›› 2024, Vol. 18 ›› Issue (02): 231-238. doi: 10.3877/cma.j.issn.1674-134X.2024.02.011

• Review • Previous Articles     Next Articles

Advances in human leukocyte antigen-B27 gene subtypes and clinical correlation with ankylosing spondylitis

Chen Wang1, Xiao Zhang2, Weidong Xu1,()   

  1. 1. Department of Joint and Bone Disease, Changhai Hospital, Naval Medical University, Shanghai 200433, China
    2. Department of Rheumatology, Guangdong Provincial People’s Hospital, Guangzhou 510080, China
  • Received:2023-12-27 Online:2024-04-01 Published:2024-05-09
  • Contact: Weidong Xu

Abstract:

Human leukocyte antigen (HLA)-B27 (HLA-B27) is closely related to the onset of ankylosing spondylitis (AS) and is an important genetic susceptibility factor of AS. At present, flow cytometry is commonly used in clinical diagnosis of AS to detect this indicator, but it is prone to false positive or false negative results, leading to misdiagnosis. With the progress of research and technology, it has been revealed that there are multiple subtypes of HLA-B27 gene. Up to now, there are a total of 379 subtypes. There is a different distribution of various HLA-B27 subtypes among diverse populations and regions all over the world. The most common subtype in China is HLA-B27: 05 and HLA-B27: 04. The correlation between various subtypes and the incidence of AS is different. The high-risk subtypes include HLA-B27: 02, 04, 05, while the protective subtypes include HLA-B27: 06, 09. The correlation between HLA-B27: 03, 07 and AS has not yet reached consensus. Meanwhile, different subtypes are characterized by the age of onset, clinical symptoms (such as lesions, enthesis, and uveitis), prognosis. Thus, illuminating the exact pathogenic mechanism and detecting subtypes of HLA-B27 are useful for screening, early diagnosis, and therapy of AS. This review explored the disadvantages within normal detection of HLA-B27 for diagnosing AS, and summarized the advances in HLA-B27 subtypes and the clinical significance in AS. Furthermore, this review expected clinical application of HLA-B27 subtypes in the future.

Key words: HLA-B27 antigen, Allele, Polymorphism, genetic, Spondylitis, ankylosing, Clinical Relevance

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