Relation Between HLA‐B27 and Clinical Features in Patients with Yersinia Arthritis

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Abstract
A study of 74 yersinia arthritis patients implied that the clinical picture of the disease may be modified by genetic background associated with the histocompatibility antigen B27 (HLA‐B27). Sixty‐six percent of patients were B27 positive. Joint symptoms were somewhat more severe in B27+ patients. Iritis, conjunctivitis, carditis, signs of urologic inflammation, and complete Reiter's triad occurred only in the B27+ group, whereas erythema nodosum was more common in B27— group. Several B27+ patients also had “B27+ rheumatic diseases,” such as ankylosing spondylitis or Reiter's disease, in their history.