TGFB1 and autoimmune hepatitis: Also, ELISA analysis showed that the levels of the inflammatory cytokines TNF-α, IFNγ, and IL-17, and the fibrotic cytokine TGF-β were increased to some extent in the livers of the AIH + AAV8-EGFP group mice compared with the NC + AAV8-EGFP group, while the level of the anti-inflammatory cytokine IL-10 was decreased.