A chromosome with labeled genes includes HLA-A, HLA-C, HLA-B, TNF, DRB1, DQA1, DQB1, DPA1, and DPB1. A scatter plot representing genetic ancestries. The prevalence of celiac disease is also shown, highlighting the HLA-DQ2.5 and B8-DQ2.5 haplotype. The diagram compares the prevalence of celiac disease among European, Admixed American, and African populations, showing percentages for each group.