Prominently, positive correlations were detected between the serum levels of FGF19 and TBIL (r = 0.595, p = 0.002), FGF19 and DBIL (r = 0.598, p = 0.0001), and FGF19 and TBA (r = 0.595, p = 0.002) (Figure) in patients with PBC-AIH OS (Figures 2(b)–2(d)). The gene discussed is FGF19; the disease is autoimmune hepatitis.