title: Major histocompatibility complex class II (DRB1*, DQA1*, and DQB1*) and DRB1*04 subtypes' associations of Hashimoto's thyroiditis in a Greek population.
abstract: Hashimoto's thyroiditis (HT) is an autoimmune disease resulting from complex interactions between genetic and environmental factors. The disease is associated with certain human leukocyte antigen (HLA) class II alleles in various populations. We aimed to determine in this study, for the first time in a Greek population, the association of HLA-DRB1*, -DQA1*, and -DQB1* alleles with HT. HLA-DRB1*, -DQA1*, and -DQB1* alleles' and -DRB1*04 subtypes' distribution was evaluated in 125 patients with HT and in 500 healthy control individuals by using a DNA-based sequence-specific primer method. Chi(_)squared tests and Bonferroni correction method were applied in the statistical analysis of the data. Significantly higher frequency of DRB1*04 (24.8% vs 7.7%, P < 0.0001) was observed in HT patients, while HLA-DRB1*07 was significantly decreased (2.8% vs 7.9%, P < 0.05). HLA-DRB1*04 subtyping showed a significant increase of DRB1*0405 (21% vs 7.8%, P < 0.0001) in HT patients. Also significant high frequencies of DQB1*0201 (14.8% vs 8.2%, P < 0.001), DQB1*0302 (18.8% vs 7.0%, P < 0.0001), and DQA1*0301 (25.6% vs 7.8%, P < 0.0001) were recorded in the patient group. Conducting the first research of this kind in a Greek population, our study tries to provide an evaluation of the prevalence of HT relating to HLA-DRB1*0405, and we report a relative risk of 2.7 for HT in a Greek population.
authors.affiliation: Department of Genetics, Development & Molecular Biology, Faculty of Sciences, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece. gioylako@yahoo.gr
authors.forename: G
authors.initials: G
authors.lastname: Kokaraki
authors.forename: M
authors.initials: M
authors.lastname: Daniilidis
authors.forename: M
authors.initials: M
authors.lastname: Yiangou
authors.forename: M
authors.initials: M
authors.lastname: Arsenakis
authors.forename: N
authors.initials: N
authors.lastname: Karyotis
authors.forename: M
authors.initials: M
authors.lastname: Tsilipakou
authors.forename: A
authors.initials: A
authors.lastname: Fleva
authors.forename: A
authors.initials: A
authors.lastname: Gerofotis
authors.forename: N
authors.initials: N
authors.lastname: Karadani
authors.forename: J G
authors.initials: JG
authors.lastname: Yovos
mesh_terms: D000328:Adult; D005260:Female; D005838:Genotype; D006115:Greece; D006683:HLA-DQ Antigens / Q000235:genetics*; D059848:HLA-DQ alpha-Chains; D059866:HLA-DQ beta-Chains; D006684:HLA-DR Antigens / Q000235:genetics*; D059811:HLA-DRB1 Chains; D050031:Hashimoto Disease / Q000235:genetics* / Q000276:immunology; D006801:Humans; D008297:Male; D008875:Middle Aged; D044465:White People / Q000235:genetics
chemical_list: D006683:HLA-DQ Antigens; D059848:HLA-DQ alpha-Chains; D059866:HLA-DQ beta-Chains; C069050:HLA-DQA1 antigen; C069051:HLA-DQB1 antigen; D006684:HLA-DR Antigens; D059811:HLA-DRB1 Chains; C527195:HLA-DRB1*04 antigen