The described alle HLA-B*0811 is of Caucasoid origin. Most likely it derive
d from a point mutation of the B*0801 allele at position 559, where an aden
ine was converted to guanine. This position corresponds to codon 163 and re
sulted in an amino acid change from threonine to alanine. This substitution
may influence both, T-cell interactions and/or peptide binding.