Frequencies of three locus DLA class II haplotypes in 66 ESSs with CH and 84 healthy controls.

A total of 11 different haplotypes with frequencies >1% were identified. DLA-DRB1*00601/DQA1*005011/DQB1*00701 (haplotype four) had an increased frequency in cases and DLA-DRB1*00501/DQA1*00301/DQB1*00501 (haplotype eight) was significantly more frequent in controls, both numbers shown in bold. A p value for significance was set at 0.05 for comparison of haplotype frequencies.