| Dermatomyositis | ||||
| Autoantibodies n (%) | Classical DM | CADM | Total | |
| N = 67 | N = 27 | N = 94 | ||
| Myositis-specific antibodies | ||||
| Anti-ARS | 25 (37) | 2 (7) | 27 (29) | |
| Anti-SRP | 0 (0) | 0 (0) | 0 (0) | |
| Anti-Mi-2 | 5 (7) | 0 (0) | 5 (5) | |
| Myositis-associated antibodies | ||||
| Anti-SSA/Ro | 8 (12) | 2 (7) | 10 (11) | |
| Anti-U1RNP | 4 (6) | 0 (0) | 4 (4) | |
| Newly found DM-specific antibodies | ||||
| Anti-CADM-140/MDA5 | 2 (3) | 17 (63) | 19 (20) | |
| Anti-p155/TIF1-γ | 7 (10) | 1 (4) | 8 (9) | |
| Anti-MJ/NXP-2 | 0 (0) | 0 (0) | 0 (0) | |
| Negative | 30 (45) | 6 (22) | 36 (38) | |