And 2 weeks after transplantation, the concentration of FGF21 differed significantly between AIH and HCC (p = 0.036), AIH and HBV (p < 0.0001), AIH and PSC (p < 0.0001), AIH and PBC (p = 0.013), ALD and HBV (p = 0.047), ALD and PSC (p = 0.015), PSC and HCV (p = 0.0012), and HBV and HCV (p = 0.004). Here, FGF21 is linked to autoimmune hepatitis.