In the group of patients with AIH, an increased level of MCP-1 in serum was found in 35% of cases (7/20), and the mean value was 273.7 ± 110.3 pg/mL, which was significantly lower than in the group of patients with PBC, but was not significantly statistically different, at p = 0.06. Here, CCL2 is linked to primary biliary cholangitis.