Electrophoretic mobility shift assays (EMSA) were performed using nuclear extract from Jurkat, LCL, K562, HUVEC cell lines and peripheral blood mononuclear cells (PBMCs) from healthy individuals (supplementary methods). Expression quantitative trait locci (QTLs) were analysed using GTEx datasets,25 (link) and IL19 (R&D Systems), IL10 (Mesoscale Discovery) and aPL levels were measured (supplementary methods).12 (link)