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Table 2 Sensitivity and specificity of anti-citrullinated fibronectin antibodies.

From: Anti-citrullinated fibronectin antibodies in rheumatoid arthritis are associated with human leukocyte antigen-DRB1shared epitope alleles

Patient group n anti-FN-Cit1035,1036 positive sensitivity (%) specificity (%)
established RA a 82 41 50.0  
early RA a 278 124 44.6  
Controls 186 3 1.6 98.4
   non-RA 154 3 1.9 98.1
   Healthy 32 0 0 100
  1. a Based upon CCP2-positive sera