Frequencies of HLA-DQ genotypes (A) and haplotypes (B) detected in 666 CD patients from south Italy.

<p>CD, celiac disease</p><p>^aGenotypes were based on the presence of the following haplotypes: DQ2.5 = DQA1*05-DQB1*02 (DRB1*03) alleles; DQ2.2 = DQA1*02-DQB1*02 (DRB1*07) alleles; DQ2.3 = DQA1*03-DQB1*02 (DRB1*04/09/11) alleles; DQ8 = DQA1*03-DQB1*0302 (DRB1*04) alleles</p><p>^bStatistically significant differences, <i>p</i><0.001 at χ² test between males (M) and females (F)</p><p>^cDQX refers to: DQ7 = DQB1*0301 (DRB1*11/12/X) alleles; DQ4, DQ5, DQ6 and DQ9, were assigned if DQB1*04, DQB1*05, DQB1*06 and DQB1*0303 alleles were present, respectively</p><p>^dStatistically significant differences, <i>p</i><0.05 at χ² test, between DQ2/DQ8 (+) and DQ2/DQ8 (-) CD patients</p><p>Frequencies of HLA-DQ genotypes (A) and haplotypes (B) detected in 666 CD patients from south Italy.