Table 3

Distribution of sera according to the presence of antifilaggrin autoantibodies detected by the “AKA”, AhFA-IB, and AhFA-ELISA-rec tests (the thresholds used are those which correspond to a diagnostic specificity of 0.95 for each test)

“AKA” AhFA-IB AhFA-ELISA-rec RA No (%) Controls No (%)
54  (22)411  (87)
+18 (7)17 (4)
+20 (8)20 (4)
+20 (8)20 (4)
++23 (10)1 (0.2)
++6 (2)1 (0.2)
++23 (10)2 (0.4)
+++77 (32)1 (0.2)
241 (100)473 (100)
  • + = positive; blank = negative.