IL10 and autoimmune hepatitis: More importantly, we found that the concentrations of serum IL-10 were significantly higher and correlated positively with the numbers of Tregs and correlated negatively with the levels of serum immunoglobulins in AIH patients undergoing an active state, which might interfere with plasma B cell differentiation and inhibit immunoglobulin production, contributing to the pathogenic process of AIH [34].