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  • Title: Polymorphism of HLA-A, -B, -DRB1, -DQA1 and -DQB1 haplotypes in a Croatian population.
    Author: Grubić Z, Zunec R, Cecuk-Jelicić E, Kerhin-Brkljacić V, Kastelan A.
    Journal: Eur J Immunogenet; 2000 Feb; 27(1):47-51. PubMed ID: 10651851.
    Abstract:
    We describe for the first time extended haplotypes in a Croatian population. The present study gives the HLA-A, -B, -DRB1, -DQA1 and -DQB1 allele and haplotype frequencies in 105 families with at least two offspring. All individuals were studied by conventional serology for HLA class I antigens (A and B), while class II alleles (DRB1, DQA1, DQB1) were typed using the PCR-SSOP method. HLA genotyping was performed by segregation in all 105 families. For extended haplotype analysis, 420 independent parental haplotypes were included. Fourteen HLA-A, 18 HLA-B, 28 DRB1, 9 DQA1 and 11 DQB1 alleles were found in the studied population. Most of the DRB1 alleles in our population had an exclusive association with one specific DQA1-DQB1 combination. This strong linkage disequilibrium within the HLA class II region is often extended to the HLA-B locus. A total of 10 HLA-A, -B, -DRB1, -DQA1, -DQB1 haplotypes were observed with a frequency </= 1.0%. The three most frequent haplotypes were HLA-A1, B8, DRB1*0301, DQA1*0501, DQB1*0201; HLA-A3, B7, DRB1*1501, DQA1*0102, DQB1*0602 and HLA-A24, B44, DRB1*0701, DQA1*0201, DQB1*02. These results should provide a useful reference for further anthropological studies, transplantation studies, and studies of associations between HLA and diseases.
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