Anti-Double-Stranded DNA Isotypes and Anti-C1q Antibody Improve the Diagnostic Specificity of Systemic Lupus Erythematosus

Table 2

A comparison of the group of SLE patients to a group of other autoimmune diseases and healthy controls.

	SLE	Other autoimmune diseases	Healthy controls
Anti-dsDNA IgG	70.8% (68/96)	12.9% (8/62)	1.7% (1/60)
Anti-dsDNA IgM	44.8% (43/96)	3.2% (2/62)	3.3% (2/60)
Anti-dsDNA IgA	33.3% (32/96)	3.2% (2/62)	3.3% (2/60)
Anti-C1q	47.9% (46/96)	12.9% (8/62)	3.3% (2/60)

SLE: systemic lupus erythematosus.