HLA-DRB1 and autoimmune hepatitis: Ma et al. (8) reported that in children of European ancestry, HLA-DRB1*03 predisposed them to type 1 of AIH and HLA-DRB1*07 to type 2, HLA-DRB1*03 or HLA-DRB1*13 was associated with fibrosis at disease onset, and possession of these three genes was related to severe liver damage.