Antibody and HLA-DR4 results in the patients with systemic lupus erythematosus
| Type of arthritis | RF +ve | Anti-RA33 +ve | Anti-CCP +ve | HLA-DR4 +ve |
| Deforming major erosions | 5/81-150 | 6/81-150 | 1/8 | 3/8 |
| Deforming minor erosions | 1/2 | 0/2 | 1/2 | 1/2 |
| Deforming non-erosions | 3/6 | 0/6 | 0/6 | 0/6 |
| Non-deforming, non-erosive | 40/215 | 14/50 | 1/50 | 56/195 |
↵1-150 p<0.01 (compared with the non-deforming, non-erosive group).