DQ1
There are four commonly encountered DQA1 alleles: DQA1*0101, *0102, *0103, *0104. These alleles are always found in haplotypes with HLA-DQB1*05 (DQ5) and HLA-DQB1*06 (DQ6). DQ1 is a serotype, rare among serotypes for human class II antigens, in that the antibodies to DQ1 react to the alpha chain of HLA DQ, these DQA1 allele gene products.
| DQA1 | linked DQB1 allele | ||||||
|---|---|---|---|---|---|---|---|
| DQ1 | *0101 | *0501 | *0301 | ||||
| *0102 | *0502 | *0504 | *0602 | *0604 | *0605 | *0609 | |
| *0103 | *0501 | *0502 | *0601 | *0602 | *0603 | ||
| *0104 | *0501 | *0503 | *0602 | ||||
| *0105 | rare | ||||||
| *0106 | rare | ||||||
| See haplotype table in HLA-DQ. Unbolded are rare haplotypes | |||||||
| Link to haplotypes can be followed by DQB1 alleles | |||||||
Read more about this topic: Major Histocompatibility Complex, Class II, DQ Alpha 1, Alleles