(A) anti-RRP8 antibody and anti-dsDNA antibodies, (B) Anti-RRP8 antibody and SLEDAI, (C) anti-TNP1 antibody and anti-dsDNA antibodies, (D) anti-TNP1 antibody and SLEDAI. SLEDAI, systemic lupus erythematosus disease activity index. Correlations were expressed as Spearman rank correlation coefficients. P values of <0.05 were considered significant.