Research Article

Presence of DQ2.2 Associated with DQ2.5 Increases the Risk for Celiac Disease

Figure 1

Risk gradient according to HLA haplotype combinations, considering a disease prevalence of 1 : 100. β2 refers to DQB1*02; α5 refers to DQA1*05; “x” denotes corresponding allele not determined; individuals with only one copy of the DQB1*02 allele were classified as β2/x (heterozygosis); individuals with two copies of the DQB1*02 allele were classified as β2/β2 (homozygosis); trans and cis indicate, respectively, α5 and β2 position in different or in the same chromosome 6 pair.