title: HLA-A26
text: # HLA-A26
  
  HLA-A26 (A26) is a human leukocyte antigen serotype within HLA-A serotype group. The serotype is determined by the antibody recognition of $α^{26}$ subset of HLA-A α-chains. For A26, the alpha "A" chain are encoded by the HLA-A*26 allele group and the β-chain are encoded by B2M locus. This group currently is dominated by A*2601. A26 and A*26 are almost synonymous in meaning. A26 is a split antigen of the broad antigen serotype A10. A26 is a sister serotype of A25, A34, A43, and A66.
  
  A26 is more common in West Pacific Rim (Taiwan to Hokkaido).
  
  ## Serotype
  
  A26 recognition of some HLA A*26 gene products :
  
  | A*26 | A26 | A10 | Sample |
  | - | - | - | - |
  | allele | % | % | size (N) |
  | *2601 | 97 | 2 | 1730 |
  | *2602 | 81 | 0 | 31 |
  | *2603 | 68 | 8 | 38 |
  | *2605 | 90 | 0 | 10 |
  
  A26 reasonably good serotyping with no overt false recognition..
  
  ## Disease associations
  
  A26 Serotype is associated with adult T-cell leukemia in Japanese.
  
  