YAP1 and autoimmune hepatitis: Through the intervention of YAP activator in mice and MDSC and T cell co-culture system, it was discovered that there was not only an increase in the proportion of MDSCs and the expression of related downstream molecules increased, but also a decline in the differentiation of immunosuppressive T cells and inflammatory cytokines, implying the involvement of Hippo-YAP signal pathway in the progression of AIH disease.