IFNL4 and systemic lupus erythematosus: IFNλ4 levels were not significantly elevated in SLE patients(p=0.642), however the levels were significantly associated with IFN score(r=0.359,p<0.001) and anti-dsDNA positivity(r=0.323,p<0.001), with higher levels observed in IFN score high SLE patients(p=0.016).