HLA-DRB1 and primary biliary cholangitis: In another Immunochip HLA fine-mapping study of 676 Italian PBC cases and 1440 controls, three DRB1 (DRB1*08, DRB1*11, DRB1*14) and one DPB1 (DPB1*03:01) susceptibility cluster were identified through conditional analysis [38], although DRB1*14 and DPB1*03:01 did not meet the genome-wide significance threshold and are therefore not listed in Table 1.