Table 3.
Associations of the presence of anti-dsDNA isotypes and anti-C1q antibody with active/inactive SLE patients, LN/non-LN groups, and active/inactive LN cases.
| Activity of SLE (N = 96) | SLE with renal involvement (N = 96) | Activity of LN (N = 50) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Active SLE | Inactive SLE | p value | LN | Non-LN | p value | Active LN | Inactive LN | p value | |
| Anti-dsDNA IgG | 82.5% (47/57) | 53.8% (21/39) | 0.002 | 76% (38/50) | 71.7% (33/46) | NS | 78.8% (26/33) | 58.8% (10/17) | NS |
| Anti-dsDNA IgM | 49.1% (28/57) | 38.5% (15/39) | NS | 32% (16/50) | 58.7% (27/46) | 0.005 | 33.3% (11/33) | 29.4% (5/17) | NS |
| Anti-dsDNA IgA | 42.1% (24/57) | 20.5% (8/39) | 0.028 | 28% (14/50) | 37.0% (17/46) | NS | 30.3% (10/33) | 29.4% (5/17) | NS |
| Anti-C1q | 63.2% (36/57) | 25.6% (10/39) | 0.000 | 56% (28/50) | 39.1% (18/46) | 0.032 | 33.3% (11/33) | 23.5% (4/17) | NS |
SLE: systemic lupus erythematosus; LN: lupus nephritis; NS: no significance; p < 0.05, chi-squared test.