TFRC and autoimmune hepatitis: Some studies have suggested that the dysregulation between Tregs and Th17 cells (Liu et al., 2021b), the activation of NKT cells (Diao et al., 2004; Liu et al., 2021a), and the imbalance of TFR/TFH cells induced by altered intestinal microbiota, presumably participated in the initiation and the progression of AIH (Liang et al., 2021).