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  • Title: [Gluten enteropathy in Croatian children is primarily associated with the HLA-DR3-DQ2 haplotype].
    Author: Jurcić Z, Brkljacić-Surkalović L, Grubić Z, Zunec R, Vezmar V, Kastelan A.
    Journal: Lijec Vjesn; 2000; 122(11-12):259-63. PubMed ID: 11291267.
    Abstract:
    OBJECTIVES: Coeliac disease (CD) has one of the strongest class II HLA association of any human disease. The goal of this study was to establish the frequency of HLA-DR and DQ antigens, as well as common HLA-DR-DQ haplotypes among CD patients. No similar study has previously been done in Croatian patients. PATIENTS AND CONTROLS: There were 58 biopsy proven patients with CD. The control groups comprised 502 and 118 healthy person for HLA-DR and HLA-DQ typing, respectively. METHODS: The class II HLA-DR and DQ antigens typing were carried out by standard microcytotoxicity assay for B cells. Only antisera to three specificities (DQ1, 2 and 3) were available to us at the time of the study. RESULTS: We confirmed the high frequency of HLA-DR3 (84.48%; RR = 23.7; p < 0.00001) in our patients with CD. As reported in other populations, most of the patients negative for DR3, were heterozygous for DR7 and DR5 (10.34%) or DR4/DR5, DR4/DR6 (3.44%). CD was significantly correlated with the presence of HLA-DQ2 (96.55%, RR = 75.9; p < 0.00001). Correlation with CD was strongly dependent on homozygosity, 15 out of 58 (25.86%) of the patients and 4 (2.87%) of the controls being homozygotes for DQ2 (RR = 11.9; p < 0.00001). The remaining two patients were DR4-DQ3 positive. Among extended haplotypes only DR2-DQ1 was under-represented (RR = 0.3; p < 0.0033). CONCLUSION: The results suggest that in Croatia CD is primarily associated with HLA-DQ2 specificities on the DR3-DQ2 haplotype.
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