For instance, the DRB1*04:04 and DRB1:04:05 alleles are linked to susceptibility in Mexican5 and Japanese6–8 and Korean9 populations, respectively, and studies including recent genome-wide association analyses have shown that DRB1*03:01 and DRB1*04:01 contribute to AIH susceptibility in European populations10–12. Here, HLA-DRB1 is linked to autoimmune hepatitis.