Significant interactions were observed between <i>CD40</i> variant rs48100485 and VCA IgG levels and <i>IL10</i> variant rs3024493 and VCA IgA levels in transitioning to SLE.
SNP imputation conducted in EA dataset identified three additional SLE-associated SNPs tagged by rs3024505 (rs3122605, rs3024493 and rs3024495 located at 9.2 kb upstream, intron 3 and 4 of IL10, respectively), and SLE-risk alleles of these SNPs were dose-dependently associated with elevated levels of IL10 mRNA in PBMCs and circulating IL-10 protein in SLE patients and controls.