SLE patients (71 males and 760 females) and healthy controls (701 males and 919 females) were used in the genetic analyses of four SNPs (rs8099917, rs12979860, rs3682134815, and rs4803217) at the IFNL3/4 locus (Additional file 1: Figure S1). The gene discussed is IFNL3; the disease is systemic lupus erythematosus.