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http://purl.uniprot.org/citations/29361871http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
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Objectives

To date, the greatest genetic risk factor known for celiac disease (CD) is the presence of HLA-DQ2 heterodimers, specifically DQ2.5 in state of homozygosis or heterozygosis. DQ2.2 variants are the second most important risk factor when carried trans to DQ2. This study aimed to determine the prevalence and risk genotypes of HLA-DR-DQ.

Material and methods

A total of 196 patients with CD and 206 healthy controls from the Province of Málaga (southern Spain) were included. The corresponding risk gradient in our population was established in accordance with the odds ratios (ORs) found.

Results

The heterozygous genotype for DR7-DQ2.2/DR3-DQ2.5 presented the highest risk (OR =6.404, p = .0001) followed by the DR3-DQ2.5 homozygous genotype (OR =4.721, p = .001). An intermediate risk was found for the DQ2.5 heterozygous genotype with no other DQ risk variant (DQ8 or DQ2.2). Similarly, these three genotypes had also an increase in the risk of associated-autoimmune diseases. The DQB1*02:01 allele was the most widely represented among patients with CD respect to the control group (f = 0.479, p = .0001), with the second most common being DQB1*02:02 (f = 0.209, p = .0001).

Conclusions

In addition to the gene dosage effect confirmed in our report, and in contrast with previous studies, we found a raised risk for those patients with DQ2.2 heterodimers in trans configuration to DQ2.5 compared to DQ2.5 homozygous individuals. Therefore, in our population of patients with CD the frequency of DQ2.2 acts as a factor that increases the genetic risk of developing CD."xsd:string
http://purl.uniprot.org/citations/29361871http://purl.org/dc/terms/identifier"doi:10.1080/00365521.2018.1430253"xsd:string
http://purl.uniprot.org/citations/29361871http://purl.uniprot.org/core/author"Caballero A."xsd:string
http://purl.uniprot.org/citations/29361871http://purl.uniprot.org/core/author"Cabrera C.M."xsd:string
http://purl.uniprot.org/citations/29361871http://purl.uniprot.org/core/author"Mendez-Lopez I.M."xsd:string
http://purl.uniprot.org/citations/29361871http://purl.uniprot.org/core/date"2018"xsd:gYear
http://purl.uniprot.org/citations/29361871http://purl.uniprot.org/core/name"Scand J Gastroenterol"xsd:string
http://purl.uniprot.org/citations/29361871http://purl.uniprot.org/core/pages"266-272"xsd:string
http://purl.uniprot.org/citations/29361871http://purl.uniprot.org/core/title"Risk variation in celiac disease in a population from Southern Spain: evaluating the influence of the DQB1*02:02 allele frequency."xsd:string
http://purl.uniprot.org/citations/29361871http://purl.uniprot.org/core/volume"53"xsd:string
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