Diagnosis/Subset | n | Anti-CCP > 1.7,% | Anti-CCP > 10, % | Anti-CAP > 1.7,% | Anti-CCP/anti-CAP > 2.0, % | Anti-CCP/anti-CAP > 2.0 (CCP > 1.7),% |
---|---|---|---|---|---|---|
Total SLE | 329 | 17 (55/329) | 1 (4/329) | 18 (59/329) | 6 (21/329) | 18 (10/55) |
Arthritis (SLE criteria) | 271 | 17 (47/271) | 1 (3/271) | 18 (49/251) | 7 (19/271) | 19 (9/47) |
I. Deforming arthropathy (Jaccoud’s) | 20 | 30 (6/20) | 5 (1/20) | 30 (6/20) | 10 (2/20) | 33 (2/6) |
Nondeforming/nonerosive arthritis | 251 | 16 (41/251) | 1 (2/251) | 17 (43/251) | 7 (17/251) | 17 (7/41) |
II. RA criteria | 18 | 33 (6/18) | 0 (0/18) | 39 (7/18) | 0 (0/18) | 0 (0/6) |
III. Joint swelling (+), no RA criteria | 39 | 10 (4/39) | 3 (1/39) | 3 (1/39) | 3 (1/39) | 25 (1/4) |
IV. Arthritis but no joint swelling | 194 | 16 (31/194) | 1 (1/194) | 18 (35/194) | 8 (16/194) | 19 (6/31) |
V. No arthritis | 58 | 14 (8/58) | 2 (1/58) | 17 (10/58) | 3 (2/58) | 13 (1/8) |
Japanese with SLE with deforming/erosive arthritis | 6 | 67 (4/6) | 33 (2/6) | 17 (1/6) | 50 (3/6) | 75 (3/4) |
RA | 47 | 68 | 26 | 93 | 77 | 91 |
Control | 35 | 9 | 0 | 11 | 17 | 67 |
CCP: citric citrullinated peptide; CAP: cyclic arginine peptide.