FASLG and systemic lupus erythematosus: Moreover, the DGQFCM peptide, which is derived from Akkermansia miciniphila (present in higher titers in SLE patients), mimics the extracellular DGQFCG part of the human Fas ligand and could affect the binding to IgG produced by memory B cells in a subset of SLE patients [39] (Figure 3D).