DNA methylation pattern of DQA1 gene promoter alleles was described.
DQA1*02:01 and *04:01 alleles methylation is increased.
DQA1*05:01 allele shows lowest methylation level.
DQA1*03 is the most and DQA1*05:05 the least expressed allele.
No correlation between promoter DNA methylation and gene expression was identified.