In patients with LN serum AαA antibody was negatively correlated with SLEDAI (Spearman’s correlation coefficient= -0.352, P=0.05) but positively correlated with serum C3 level (r=0.419, P=0.014) as well as serum C4 level (r=0.335, P=0.05). Here, C3 is linked to lobular neoplasia.