BTG3 and autoimmune hepatitis: Serum ALB, TB, AST levels and PT were associated with total 25(OH)D levels of < 15 ng/mL, while no association was observed between serum 25(OH)D levels and age, sex, PLT count, ALT level, ALP level, IgG titer, ANA titer, AIH score, relapse frequency and cirrhosis.