Identification of 3 novel HLA-A alleles A*24:224, A*24:225 and A*24:257 by sequence-based typing / 中华医学遗传学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To verify 3 novel HLA-A alleles A*24224, A*24225 and A*24257 identified in Chinese Han individuals.</p><p><b>METHODS</b>No full matched results were obtained at HLA-A locus in HLA typing for China Marrow Donor Program (CMDP) using bi-allelic Sequence-Based Typing (SBT). The novel HLA alleles were identified with allele-specific amplification SBT.</p><p><b>RESULTS</b>All of the three probands had a novel nucleotide sequence at HLA-A locus. All of the 3 new sequences are most close to HLA-A*24020101 except for 1 or 2 nucleotide substitution in exon 2, which resulted in different changes in corresponding codons and encoded amino acids.</p><p><b>CONCLUSION</b>Three novel HLA-A alleles were confirmed and officially named as HLA-A*24224, HLA-A*24225 and HLA-A*24257 under the GenBank accession numbers JQ899198, JQ924283 and HG003642 by the WHO Nomenclature Committee for Factors of the HLA System in November 2012 and November 2013, respectively.</p>