UACA and systemic lupus erythematosus: The medians with IQR of anti‐C1q, anti‐dsDNA, anti‐Nucl, and anti‐His in SLE patients with moderate and severe disease activity were 12.15 (5.25–76.74) U/ml, 79.48 (25.43–300.00) IU/ml, 2.38 (0.41–18.23) AI, and 1.74 (0.65–7.93) AI, respectively.