HLA-A*9203, found in Taiwan using sequence-based typing method, was identical to HLA-A*0207 in exon 3 but differed in exon 2 by five nucleotide substitutions at positions 240-282 corresponding to three amino acid changes at codons 62, 66 and 70. Since this substitution motif is also seen in A*11 and A*03, it is likely that a gene conversion event from A*11 or A*03 to a A*0207 backbone may have been the process used in generating HLA-A*9203.
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