To evaluate the potential of CHI3L1 as a biomarker for hepatic fibrosis in patients with autoimmune hepatitis, we measured liver stiffness values (LSM), serum CHI3L1 levels, as well as other commonly used hepatic fibrosis scores (FIB-4, APRI, AAR, NLR, PLR, GPR). Here, ALDH18A1 is linked to autoimmune hepatitis.