IFNA1 and systemic lupus erythematosus: As shown in Fig 7, serum levels of Gal-9 were significantly higher in SLE patients with detectable IFN-α compared with those without detectable IFN-α (26.7 ng/ml [IQR: 6.5–59.7] versus 12.5 ng/ml [IQR: 3.6–39.0], p<0.002).