HLA-B57 (B57) is an HLA-Bserotype. B57 is a split antigen from the B17broad antigen, the sister serotype B58.[1] The serotype identifies the more common HLA-B*58 gene products.[2] (For terminology help see: HLA-serotype tutorial) Like B58, B57 is involved in drug-induced inflammatory skin disorders.
Serotype
B57 and B17 serotype recognition of some more common HLA B*57 alleles[3]
HLA-B*5701 is associated with drug-induced inflammatory disease of the skin. Individuals with B57 are more sensitive to the drug abacavir.[5] Abacavir is an antiretroviral drug used in treatment of HIV, however in sensitive individuals fever, skin rash, fatigue, gastrointestinal symptoms such as nausea, vomiting, diarrhea or abdominal pain and respiratory symptoms such as pharyngitis, dyspnea, or cough can develop. FDA has advised that people from at-risk ethnic groups, (see table on the left) be screened prior to drug-therapy.[6]
[Note: phenotype frequencies are roughly double allele frequencies -tabled values- when allele frequency is less than 30%]
References
^Ways JP, Coppin HL, Parham P (1985). "The complete primary structure of HLA-Bw58". J. Biol. Chem. 260 (22): 11924–33. PMID2995352.