HLA-B15

HLA-B*1501 (alpha)-β2MG with bound peptide
major histocompatibility complex (human), class I, B15
Alleles B*1501, 1502 . .
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 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 *1502 is associated with the severe skin conditions Stevens–Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) caused by carbamazepine drug sensitivity in East Asians.

Serotype

Serotypes B15, B62, B63, B70, B71, B72, B75, B76, B77 recognition of the HLA B*15 gene products[3]
B*15 B15 B62 B63 B70 B71 B72 B75 B76 B77 Sample Desig-
allele % % % % % % % % % size (N) nation
*1501 2 96 1906 B62
*1502 7 22 62 1035 B75
*1503 1 61 10 2569 B70
*1504 10 69 29 B62
*1505 18 64 22 B62
*1506 40 20 11 10 B62
*1507 79 101 B62
*1508 20 18 45 B62
*1509 53 65 B70
*1510 1 49 2 2 1 1204 B70
*1511 15 27 21 68 B62
*1512 17 18 8 12 B62
*1513 15 8 19 12 21 116 B77
*1515 13 49 28 138 B62
*1516 3 80 816 B63
*1517 2 88 797 B63
*1518 51 3 552 B70
*1520 100 5 B62
*1521 7 12 55 132 B75
*1524 44 54 B62
*1525 7 74 8 116 B62
*1527 7 76 76 B62
*1528 14 57 14 7 B62
*1529 19 21 B70
*1530 17 64 98 B62
*1531 50 12 B62
*1535 79 34 B62
*1537 30 34 B70
Allele B15 B62 B63 B70 B71 B72 B75 B76 B77 N
Alleles link-out to IMGT/HLA Databease at EBI

References

  1. Marsh SG, Albert ED, Bodmer WF, et al. (2005). "Nomenclature for factors of the HLA system, 2004". Tissue Antigens. 65 (4): 301–69. PMID 15787720. doi:10.1111/j.1399-0039.2005.00379.x.
  2. Hildebrand WH, Domena JD, Shen SY, et al. (April 1994). "HLA-B15: a widespread and diverse family of HLA-B alleles". Tissue Antigens. 43 (4): 209–18. PMID 7521976. doi:10.1111/j.1399-0039.1994.tb02327.x.
  3. derived from IMGT/HLA
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.