HLA-B*15:01 (alpha)-β2MG with bound peptide | ||
major histocompatibility complex (human), class I, B15 | ||
Alleles | B*15:01, 15:02 . . | |
Structure (See HLA-B) | ||
Shared data | ||
Locus | chr.6 6p21.31 |
HLA-B15 (B15) is an HLA-B serotype. The serotype identifies the B*15 gene-allele protein products of HLA-B. [1]
B15 is a broad antigen and can be subdivided into several split antigens that are often used in characterization. These are B62, B63, B70, B71, B72, B75, B76, B77. B*15 is the largest allele grouping for any known human autosomal locus, identified as of August 2008 there are more than 150 alleles and ~140 amino acid sequence variants from those gene products. Some of these alleles are discussed below. Other alleles, such as B*46 evolved from B*15. One reason for the diversity of this group is that B15 is among a group of alleles enriched in the original humans that left Africa and dispersed across East Asia and Australia. As people traveled east the frequency of many alleles dropped or disappeared from migrants. However B*15 persisted, expanded and diversified. [2] The wide range and complex environment selected for new alleles and promoted their expansion. B*46 for example is not found in Africa, and appears to have evolved and spread in East Asia, to several 100 million bearers worldwide.
HLA-B15 allele *15:02 is associated with the severe skin conditions Stevens–Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) caused by carbamazepine drug sensitivity in East Asians.
Carriers of the HLA-B15 allele *15:01 (B62) are much more likely to be asymptomatic when infected with SARS-CoV-2 (the virus that causes COVID-19). [3]
B*15 | B15 | B62 | B63 | B70 | B71 | B72 | B75 | B76 | B77 | Sample | Desig- |
allele | % | % | % | % | % | % | % | % | % | size (N) | nation |
*15:01 | 2 | 96 | 1906 | B62 | |||||||
*15:02 | 7 | 22 | 62 | 1035 | B75 | ||||||
*15:03 | 1 | 61 | 10 | 2569 | B70 | ||||||
*15:04 | 10 | 69 | 29 | B62 | |||||||
*15:05 | 18 | 64 | 22 | B62 | |||||||
*15:06 | 40 | 20 | 11 | 10 | B62 | ||||||
*15:07 | 79 | 101 | B62 | ||||||||
*15:08 | 20 | 18 | 45 | B62 | |||||||
*15:09 | 53 | 65 | B70 | ||||||||
*15:10 | 1 | 49 | 2 | 2 | 1 | 1204 | B70 | ||||
*15:11 | 15 | 27 | 21 | 68 | B62 | ||||||
*15:12 | 17 | 18 | 8 | 12 | B62 | ||||||
*15:13 | 15 | 8 | 19 | 12 | 21 | 116 | B77 | ||||
*15:15 | 13 | 49 | 28 | 138 | B62 | ||||||
*15:16 | 3 | 80 | 816 | B63 | |||||||
*15:17 | 2 | 88 | 797 | B63 | |||||||
*15:18 | 51 | 3 | 552 | B70 | |||||||
*15:20 | 100 | 5 | B62 | ||||||||
*15:21 | 7 | 12 | 55 | 132 | B75 | ||||||
*15:24 | 44 | 54 | B62 | ||||||||
*15:25 | 7 | 74 | 8 | 116 | B62 | ||||||
*15:27 | 7 | 76 | 76 | B62 | |||||||
*15:28 | 14 | 57 | 14 | 7 | B62 | ||||||
*15:29 | 19 | 21 | B70 | ||||||||
*15:30 | 17 | 64 | 98 | B62 | |||||||
*15:31 | 50 | 12 | B62 | ||||||||
*15:35 | 79 | 34 | B62 | ||||||||
*15:37 | 30 | 34 | B70 | ||||||||
Allele | B15 | B62 | B63 | B70 | B71 | B72 | B75 | B76 | B77 | N | |
Alleles link-out to IPD-IMGT/HLA Database at EBI |
HLA-A*02 (A*02) is a human leukocyte antigen serotype within the HLA-A serotype group. The serotype is determined by the antibody recognition of the α2 domain of the HLA-A α-chain. For A*02, the α chain is encoded by the HLA-A*02 gene and the β chain is encoded by the B2M locus. In 2010 the World Health Organization Naming Committee for Factors of the HLA System revised the nomenclature for HLAs. Before this revision, HLA-A*02 was also referred to as HLA-A2, HLA-A02, and HLA-A*2.
HLA-A9 (A9) is a broad antigen HLA-A serotype that recognized the HLA-A23 and HLA-A24 serotypes. A*2402 appears to have evolved from A*23 alleles by a process of gene conversion. The A23 is more common in Africa and regions proximal to Africa. A24 is at very high frequencies in Austronesia and certain indigenous peoples of the Arctic, North America, South America and West Pacific Rim. While it is common over most of Eurasia, it is found at low abundance in NW Europe. A24 appears to have been carried by the first colonizers of South Eastern Asia.
HLA-A69 (A69) is a human leukocyte antigen serotype within HLA-A serotype group. The serotype is determined by the antibody recognition of α69 subset of HLA-A α-chains. For A69, the alpha "A" chain are encoded by the HLA-A*69 allele group and the β-chain are encoded by B2M locus. This group currently is dominated by A*6901. A69 and A*69 are almost synonymous in meaning. A69 is a split antigen of the broad antigen serotype A28. A69 is a sister serotype of A68.
HLA-A43 (A43) is a human leukocyte antigen serotype within HLA-A serotype group. The serotype is determined by the antibody recognition of α43 subset of HLA-A α-chains. For A43, the alpha "A" chain are encoded by the HLA-A*43 allele group and the β-chain are encoded by B2M locus. This group currently is dominated by A*4301. A43 and A*43 are almost synonymous in meaning. A43 is a split antigen of the broad antigen serotype A10. A43 is a sister serotype of A25, A26, A34, and A66.
HLA-A31 (A31) is a human leukocyte antigen serotype within HLA-A serotype group. The serotype is determined by the antibody recognition of α31 subset of HLA-A α-chains. For A31, the alpha "A" chain are encoded by the HLA-A*31 allele group and the β-chain are encoded by B2M locus. This group currently is dominated by A*3101. A31 and A*31 are almost synonymous in meaning. A31 is a split antigen of the broad antigen serotype A19. A31 is a sister serotype of A29, A30, A32, A33, and A74.
HLA-B*82 (B*82) is an HLA-B allele-group. There is no current useful serotyping for HLA-B*82 gene products. B*8201 was first identified by sequence analysis and appears to be derived by gene conversion between B*5602 and another HLA class I allele., later B*8202 was identified in a caucasian and was suggested to be ancestral to B*8201, as product between gene conversion of B*5602 allele and B*4501 allele. B*82 is more common in East Africa, Kenya and Sudan, the frequency of B*8201 is found in the peoples to the west, sporadically in Central and West Africa, B*8202 is found in Sudan and Saudi Arabia.
HLA-B78 (B78) is an HLA-B serotype. The serotype identifies the more common HLA-B*78 gene products. B78 is more common in West and North Africa, but is also scattered at low frequencies in parts of Asia.
HLA-B73 (B73) is an HLA-B serotype. The serotype identifies the HLA-B*7301 gene product. Part of B*7301 is similar to the HLA-B22 family, however part resembles the domains seen in other apes. B73 is more common in Western Indian Ocean, Mediterranean and Africa.
HLA-B67 (B67) is an HLA-B serotype. The serotype identifies the more common HLA-B*67 gene products. B67 is region specific recombinant haplotype formed by the gene conversion of B*39, an allele common along the Northwest Pacific Rim, and B7, B22, or B27.
HLA-B59 (B59) is an HLA-B serotype. The serotype identifies the more common HLA-B*## gene products. B59 is a hybrid between B*55 and B*51. B59 is more common in Japan, Korea, N. China and Mongolia.
HLA-B46 (B46) is an HLA-B serotype. The serotype identifies the gene products of HLA-B*4601 allele. B*4601 resulted from a rare, interlocus, gene conversion between B62, probably B*1501, and a HLA-C allele. B*4601 is the most common HLA-B allele that does not have an origin within Africa, and estimated 400 million people in Eastern Asia carry a B46 allele. When found B*4601 segregates with only 2 HLA-Cw alleles, A limited number of HLA-A and HLA-DRB1 alleles suggesting that the allele recently expanded from a limited sized group within SE Asia. Extremely low frequencies outside of Eastern Asia are indicators of a recent expansion of B46 from a recently small population. The frequency distribution suggests the ancestral B46 population was in SE China, or, potentially Burma. B46 in Asia correlates with wet-rice farming. The exceptions are notable, it has been found in the Nivkhi on north-eastern Sakalin Island, the Ainu, and the Nivkhi-related (genetically) Tlinglet population of Alaska at trace levels.
HLA-B18 (B18) is an HLA-B serotype. The serotype identifies the more common HLA-B*18 gene products. B*1801, the most common allele is at highest frequencies in Northern Italy and the Balkans, a peak frequency distribution it shares with B*3501.
HLA-B8 (B8) is an HLA-B serotype. The serotype identifies the HLA-B*08 gene products. HLA-B8, previously known as HL-A8 was one of the first identified of the HLA antigens. It coined the "Super B8" haplotype, also called the ancestral European haplotype because of its common occurrence in Europe, particular the isles and Scandinavia. B8 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.
HLA-B55 (B55) is an HLA-B serotype. B55 is a split antigen from the B22 broad antigen, sister serotypes are B54 and B56. The serotype identifies the more common HLA-B*55 gene products.
HLA-B50 (B50) is an HLA-B serotype. B50 is a split antigen from the B21 broad antigen, the sister serotype B49. The serotype identifies the more common HLA-B*50 gene products.
HLA-B77 (B77) is an HLA-B serotype. The serotype identifies certain B*15 gene-allele protein products of HLA-B.
HLA-B75 (B75) is an HLA-B serotype. The serotype identifies certain B*15 gene-allele protein products of HLA-B.
HLA-B70 (B70) is an HLA-B serotype. The serotype identifies certain B*15 gene-allele protein products of HLA-B. B70 is one of many split antigens of the broad antigen, B15.
HLA-B63 (B63) is an HLA-B serotype. The serotype identifies certain B*15 gene-allele protein products of HLA-B.
HLA-B62 (B62) is an HLA-B serotype. The serotype identifies certain B*15 gene-allele protein products of HLA-B.