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  • Title: Common and well-documented (CWD) alleles of human leukocyte antigen-A, -B, -C, -DRB1, and -DQB1 loci for the Chinese Han population do not quite correlate with the ASHI CWD alleles.
    Author: He J, Li Y, Bao X, Qiu Q, Yuan X, Xu C, Shen J, Hou J.
    Journal: Hum Immunol; 2012 Jan; 73(1):61-6. PubMed ID: 21712058.
    Abstract:
    Human leukocyte antigen (HLA), which is extremely polymorphic, plays an important role in stem cell transplantation. The Chinese Han comprise a large population of approximately 1.3 billion with diverse HLA alleles that need to be characterized. Data from 3,296 independent, unrelated Chinese Han individuals (1,457 recipients and 1,839 donors) were provided by the China Marrow Donor Program (CMDP) for donor-recipient confirmatory typing. Sequence-based typing, sequence-specific oligonucleotide probe (SSOP)/High Definition-SSOP, and sequence-specific primer methods were used to obtain 4-digit alleles. A total of 49, 86, 50, 63, and 24 HLA-A, -B, -C, -DRB1, and -DQB1 alleles were observed. Following American Society for Histocompatibility and Immunogenetics (ASHI) common and well-documented (CWD) criteria, CWD alleles for Chinese Han in our laboratory test and other laboratory reports do not quite correlate with the ASHI CWD alleles: A*11:53, A*02:34, A*02:53N, B*27:24, B*46:02, B*55:12, C*01:06, C*03:17, C*06:06, C*07:66, C*07:67, C*08:22, DRB1*12:10, DQB1*03:13, and DQB1*06:05 are CWD, but are not included in the ASHI CWD list. A series of alleles are well-documented alleles and are listed in the ASHI CWD list. Conversely, A*26:03, B*51:03, C*12:05, C*15:09, C*15:11, C*17:03, DRB1*11:07, DRB1*11:11, DRB1*13:05, DRB1*13:13, DRB1*14:06, DRB1*14:12, DRB1*14:22, DRB1*14:25, and DQB1*06:11 are rare alleles, but are included in the ASHI CWD list. HLA ethnic diversity is the main reason for the differences in HLA alleles worldwide. The ASHI HLA CWD alleles help reduce the workload and expenses in high-resolution donor registries and the HLA allele frequencies provide a basis from which to predict the chances of finding HLA matching donors. Our data will be meaningful for the CMDP, for other worldwide donor registries, and for an updated ASHI CWD allele list.
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