major histocompatibility complex, class II, DR12 | |
Haplotypes groups | DQA*01:DRB1*1201 to DQA*01:DRB1*1203 DQA*01:DRB1*1206 |
Structure (See HLA-DR) | |
Identifiers | alpha *0101 |
Symbol(s) | HLA-DRA [ permanent dead link ] |
EBI-HLA | DRA*0101 |
Identifiers | beta 1 *1201 to *1203*1206 |
Symbol(s) | HLA-DRB1 [ permanent dead link ] |
EBI-HLA | DRB1*1201 |
EBI-HLA | DRB1*1202 Archived 2011-05-15 at the Wayback Machine |
EBI-HLA | DRB1*1203 Archived 2011-05-15 at the Wayback Machine |
EBI-HLA | DRB1*1306 |
Shared data | |
Locus | chr.6 6p21.31 |
HLA-DR12(DR12) is a HLA-DR serotype that recognizes the DRB1*1201 to *1203, *1206. DR12 serotype is a split antigen of the older HLA-DR5 serotype group which also contains the similar HLA-DR11 antigens.
DRB1* | DR12 | DR5 | DR11 | Sample |
allele | % | % | % | size (N) |
1201 | 83 | 4 | 2 | 893 [2] |
1202 | 89 | 162 | ||
1203 | >50 | 3 | ||
1206 | >50 | 2 | ||
The table above describes the efficiency of serological typing of DR12 and DR5. Serotypes are unknown the following alleles: DRB1*1204,*1205 to *1207 to *1215
There are only 2 common allels for DRB1*12, *1201 and *1202. *1202 is more common on the West Pacific Rim and particularly Indochina and the South Pacific.
DR12 is associated with vulval lichen sclerosus, [3] and undifferentiated spondyloarthritis. [4]
DRB1*1201 is associated with iritis in juvenile arthritis, [5] primary antiphospholipid syndrome, [6] tiopronin intolerance in rheumatoid arthritis, [7] adult chronic articular Still's disease [8]
DRB1*1202 is found to be increased in narcolepsy associated sudden death syndrome in the Thai population, [9] and narcolepsy in the Japanese population.
DRB1*12:DQA1*0505:DQBA1*0301 haplotype: DR12-DQ7.5/DR7-DQ2.2 is a transhaplotype risk for coeliac disease [10]
DRB1*1201:DRB3*01/03: colorectal cancer [11]
DR12 Haplotypes | ||||
Serotypes | DRA | DRB1 | DRB3 | |
---|---|---|---|---|
DR11(5)-DR52 | *0101 | *1201 | *0101 | |
*0101 | *1202 | *0201 | ||
*0101 | *1202 | *0202 | ||
*0101 | *1202 | *0301 | ||
Serotypes | DRB1 | DQA1 | DQB1 | |
DR12(5)-DQ7 (7.5, 3) | *1201 | *0505 | *0301 | |
*1202 | *0505 | *0301 | ||
DR12(5)-DQ7 (7.3, 3) | *1201 | *0303 | *0301 | |
DR12(5)-DQ7 (7.4, 3) | *1201 | *0401 | *0301 | |
DR12(5)-DQ7 (7.6, 3) | *1201 | *0601 | *0301 | |
Serotypes | HLA-A | HLA-C | HLA-B | DRB1 |
A31(19)-Cw10-B51(5)-DR12(5) | *3101 | *0304 | *5101 | *1202 |
A11-Cw9-B75(15)-DR12(5) | *1101 | *0303 | *1502 | *1202 |
A2-Cw10-B13-DR12(5) | *0201 | *0304 | *1301 | *1202 |
HLA-DR12 is genetically linked to DR52 [12] and HLA-DQ7 serotypes.
The human leukocyte antigen (HLA) system or complex is a complex of genes on chromosome 6 in humans which encode cell-surface proteins responsible for regulation of the immune system. The HLA system is also known as the human version of the major histocompatibility complex (MHC) found in many animals.
HLA-DQ7 (DQ7) is an HLA-DQ serotype that recognizes the common HLA DQB1*0301 and the less common HLA DQB1*0304 gene products. DQ7 is a form of 'split antigen' of the broad antigen group DQ3 which also contains DQ8 and DQ9.
HLA-DR53 is an HLA-DR serotype that recognizes gene products of HLA-DRB4 locus. There are 13 alleles at this locus that encode 7 proteins.
HLA-DR52 is an HLA-DR serotype that recognizes gene products of HLA-DRB3 locus. Three allele groups can produce 35 isoforms.
HLA-DR51 is a HLA-DR serotype that recognizes the antigens encoded by the minor DR locus HLA-DRB5.
HLA-DR17 (DR17) is an HLA-DR serotype that recognizes the DRB1*0301 and *0304 gene products. DR17 is found at high frequency in Western Europe. DR17 is part of the broader antigen group HLA-DR3 and is very similar to the group HLA-DR18.
HLA-DR15 (DR15) is a HLA-DR serotype that recognizes the DRB1*1501 to *1505 and *1507 gene products. DR15 is found at high levels from Ireland to Central Asia. DR15 is part of the older HLA-DR2 serotype group which also contains the similar HLA-DR16 antigens.
HLA-DR13(DR13) is a HLA-DR serotype that recognizes the DRB1*1301 to *13082, *1310 and some other *13 gene products. DR13 serotype is a split antigen of the older HLA-DR6 serotype group which also contains the similar HLA-DR14 antigens.
HLA-DR14(DR14) is a HLA-DR serotype that recognizes the DRB1*1401 to *1408, *1410 to *1418, and other *14 gene products. DR14 serotype is a split antigen of the older HLA-DR6 serotype group which also contains the similar HLA-DR13 antigens.
HLA-DR11 (DR11) is a HLA-DR serotype that recognizes the DRB1*1101 to *1110. DR11 serotype is a split antigen of the older HLA-DR5 serotype group which also contains the similar HLA-DR12 antigens.
HLA-DR10 (DR10) is a HLA-DR serotype that recognizes the DRB1*1001 gene product.
HLA-DR8 (DR8) is a HLA-DR serotype that recognizes the DRB1*0801 to *0807, and *0810 to *0812 gene products.
HLA-DR7 (DR7) is a HLA-DR serotype that recognizes the DRB1*0701 to *0705 gene products.
HLA-DR5 (DR5) is a broad-antigen serotype that is further split into HLA-DR11 and HLA-DR12 antigen serotypes.
HLA-DR2 (DR2) of the HLA-DR serotype system, is a broad antigen serotype that is now preferentially covered by HLA-DR15 and HLA-DR16 serotype group. This serotype primarily recognizes gene products of the HLA-DRB1*15 and HLA-DRB1*16 allele groups.
HLA-DR3 is composed of the HLA-DR17 and HLA-DR18 split 'antigens' serotypes. DR3 is a component gene-allele of the AH8.1 haplotype in Northern and Western Europeans. Genes between B8 and DR3 on this haplotype are frequently associated with autoimmune disease. Type 1 diabetes mellitus is associated with HLA-DR3 or HLA-DR4. Nearly half the US population has either DR3 or DR4, yet only a small percentage of these individuals will develop type 1 diabetes.
HLA-DR4 (DR4) is an HLA-DR serotype that recognizes the DRB1*04 gene products. The DR4 serogroup is large and has a number of moderate frequency alleles spread over large regions of the world.
HLA-DR1 (DR1) is a HLA-DR serotype that recognizes the DRB1*01 gene products. It has been observed to be common among centenarians.
In autoimmune disease, anti-apolipoprotein H (AAHA) antibodies, also called anti-β2 glycoprotein I antibodies, comprise a subset of anti-cardiolipin antibodies and lupus anticoagulant. These antibodies are involved in sclerosis and are strongly associated with thrombotic forms of lupus. As a result AAHA are strongly implicated in autoimmune deep vein thrombosis.
HLA-B39 (B39) is an HLA-B serotype. The serotype identifies the more common HLA-B*39 gene products.