Autoimmune Diseases · Pathology

Patients with which of the following HLA alleles have a significantly higher risk of developing Ankylosing Spondylitis?

  1. HLA-DR3
  2. HLA-DR4
  3. HLA-B27
  4. HLA-DQ8
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Correct answer: HLA-B27

The association between HLA-B27 and Ankylosing Spondylitis is one of the strongest known HLA-disease links. Approximately 90% of affected individuals carry this allele compared to less than 10% of the general population.

Difficulty: Medium Question 9 of 20

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