IFNA1 and systemic lupus erythematosus: Pearson correlation of the IFN module eigengene to the presence of SLE disease was significant (p < .0005) and positive for all datasets (range of r = 0.16 to 0.79), but the magnitude of the correlation to disease activity measured by SLEDAI was low and variable (range of r = −0.49 to 0.37) even though some of the relationships to SLEDAI were significant (p < .05, Supplementary Data 8).