IFI44L and systemic lupus erythematosus: Among these, IFI44L, which was previously identified as one of six common DEGs (IFI27, IFI44, IFI44L, IFI6, EPSTI1, and OAS1) between SLE and normal samples, was the most common top DEG in GSE32591 and GSE112943 (Fig. 2F).