Table 3.
Anti-CarP specificities in palindromic rheumatism and rheumatoid arthritis patients.
| Anti-FCS |
Anti-CFFHP |
Any specificity |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| PR n (%) |
RA n (%) |
p value | PR n (%) |
RA n (%) |
p value | PR n (%) |
RA n (%) |
p value | ||
| Positive | IgG | 10 (19) | 19 (36) | 0.044 | 9 (17) | 11 (21) | 0.588 | 13 (24) | 27 (51) | 0.004 |
| IgA | 4 (7) | 10 (19) | 0.093 | 1 (2) | 10 (19) | 0.004 | 4 (7) | 18 (34) | 0.001 | |
| IgM | 4 (7) | 13 (25) | 0.018 | 0 (0) | 8 (15) | 0.003 | 4 (7) | 19 (36) | 0.000 | |
| Any isotype | 10 (19) | 23 (43) | 0.005 | 9 (17) | 20 (38) | 0.014 | 13 (24) | 34 (64) | 0.001 | |
Anti-CarP, anti-carbamylated protein/peptide antibodies; Anti-CFFHP, anti-chimeric fibrin/filaggrin homocitrullinated peptide antibodies; Anti-FCS, anti-carbamylated fetal calf serum antibodies; Ig, immunoglobulin; n, number; PR, palindromic rheumatism; RA, rheumatoid arthritis.