HLA-A36 (A36) is a human leukocyte antigenserotype within HLA-A serotype group. The serotype is determined by the antibody recognition of α36 subset of HLA-A α-chains. For A36, the alpha "A" chain are encoded by the HLA-A*36 allele group and the β-chain are encoded by B2Mlocus. This group currently is dominated by A*3601. A36 and A*36 are almost synonymous in meaning.
A36 is largely limited to Africa. Outside Africa more than half of the populations have no A36 and the majority that do, have only trace levels. The exception is in Central/East Central Asia. This appears not to be coincidental. HLA DR3-DQ2 linkage and frequency indicates a strong possibility of a recent migration from either North or West Africa in which the DR3-DQ2 (notably DRB1*0302) and A*33-B*58 haplotypes were carried into and redistributed from Central Asia into the surrounding populations.
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