Antibody | RA, n = 40 | SLE, n = 16 | SSc, n = 8 | SS, n = 1 | Polyarthritis, n = 11 | Polyarthralgia, n = 11 | FM, n = 4 | OA, n = 8 | Other, n = 11 |
---|---|---|---|---|---|---|---|---|---|
ANA | 25* | 11 | 7 | 1 | 8 | 5 | 2 | 5** | 5*** |
Anti-dsDNA | 1 | 2 | 1 | 0 | 0 | 1 | 0 | 0 | 0 |
aCL IgG | 10 | 2 | 3 | 0 | 5 | 1 | 2 | 1 | 3† |
aCL IgM | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1†† |
Anti-Ro | 2* | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
Anti-La | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
Anti-Sm | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1†† |
Anti-nRNP | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 1# |
Anti-Ribo P | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Anti-Jo 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Unidentified | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
Anti-CCP | 22 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1†† |
RF IgM | 23 | 1 | 1 | 1 | 1 | 2 | 0 | 1 | 0 |
RF IgG | 12 | 0 | 0 | 0 | 2 | 1 | 0 | 0 | 0 |
FM: fibromyalgia; OA: osteoarthritis; RA: rheumatoid arthritis; SLE: systemic lupus erythematosus; SSc: systemic sclerosis; SS: Sjögren’s syndrome; ANA: antinuclear antibody; aCL: anticardiolipin antibodies; Ig: immunoglobulin; CCP: cyclic citrullinated peptide; RF: rheumatoid factor. Other: undifferentiated connective tissue disease (UCTD) (4), anterior uveitis (3), sarcoidosis (1), sclerodactyly (1), seronegative spondyloarthropathy (2). Unidentified: antibody binding lines detected during immunodiffusion that do not match known rheumatic disease antigens.
↵* Patient with both RA and Sjögren’s syndrome (1);
↵** patient with both FM and OA (2);
↵*** UCTD (3) and anterior uveitis (1);
↵† UCTD (2) and sclerodactyly (1);
↵†† UCTD (1);
↵# inflammatory eye disease.