Allele and haplotype frequencies for HLA-DQ in Iranian celiac disease patients.
World J Gastroenterol
; 20(20): 6302-8, 2014 May 28.
Article
em En
| MEDLINE
| ID: mdl-24876751
ABSTRACT
AIM:
To assess the distribution of human leukocyte antigen (HLA)-DQ2 and -DQ8 in Iranian celiac disease (CD) patients and compare them to healthy Iranian controls.METHODS:
To predict the HLA-DQA1 and -DQB1 genes, we used six previously reported HLA-tagging single nucleotide polymorphism to determine HLA genotypes in 59 Iranian patients with 'biopsy-confirmed' CD and in 151 healthy Iranian individuals. To test the transferability of the method, 50 cases and controls were also typed using a commercial kit that identifies individual carriers of DQ2, DQ7 and DQ8 alleles.RESULTS:
In this pilot study 97% of CD cases (n = 57) and 58% of controls (n = 87) were carriers of HLA-DQ2 and/or HLA-DQ8 heterodimers, either in the homozygous or heterozygous state. The HLA-DQ pattern of these 57 CD patients heterozygous DQ2.2 (n = 14) and homozygous DQ2.2 (n = 1), heterozygous DQ2.5 (n = 33) and homozygous DQ2.5 (n = 8), heterozygous DQ8 (n = 13) and homozygous DQ8 (n = 2). Two CD patients were negative for both DQ2 and DQ8 (3%).CONCLUSION:
The prevalence of DQ8 in our CD population was higher than that reported in other populations (25.4%). As reported in other populations, our results underline the primary importance of HLA-DQ alleles in the Iranian population's susceptibility to CD.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Haplótipos
/
Antígenos HLA-DQ
/
Doença Celíaca
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Polimorfismo de Nucleotídeo Único
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Frequência do Gene
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article