HLA-B18
HLA-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.Serotype
B*18:06 is one of the four B alleles that reacts with neither Bw4 nor Bw6. The others are B*46:01, B*55:03, and B*73:01.