8HLA-DR3 expressed in AIH has a strong linkage with HLA-DQ2 and may account for the association between these diseases.9 This linkage probably explains damage to hepatocytes as well as the intestinal mucosa by the immunologic mechanism generated by tTG acting both as a self-antigen or generating neo-antigen.4,10. The gene discussed is TGM2; the disease is autoimmune hepatitis.