PMID- 19317748 OWN - NLM STAT- MEDLINE DCOM- 20090529 LR - 20111117 IS - 1399-0039 (Electronic) IS - 0001-2815 (Linking) VI - 73 IP - 4 DP - 2009 Apr TI - Characterization of 104 novel alleles at the HLA-A, -B, and -DRB1 loci from National Marrow Donor Program volunteer donors. PG - 364-72 LID - 10.1111/j.1399-0039.2009.01226.x [doi] AB - One hundred and four novel human leukocyte antigen (HLA) alleles are described from volunteer donors of the National Marrow Donor Program: 37 HLA-A alleles, 37 HLA-B alleles, and 30 HLA-DRB1 alleles. Seventeen ( approximately 16%) of the novel alleles were found in multiple individuals and likely are relatively common in the population. Seventy-two ( approximately 69%) of the 104 novel alleles are single nucleotide substitution variants when compared with their most homologous allele. Nine of these single nucleotide variants are silent substitutions and three create null alleles. The remaining novel alleles differ from their most similar allele by two to seven nucleotide substitutions. Some of the novel alleles encode amino acid changes at positions not previously reported to be polymorphic, such as codons 6 and 11 in HLA-A alleles and codons 5, 105, and 141 in HLA-B alleles. Interestingly, one of the novel HLA-DRB1 alleles (*1471) has a change that is not the typical glycine/valine dimorphism at codon 86, which plays a key role in peptide binding to DR molecules. This is only the second DRB1 allele described that encodes an amino acid other than glycine or valine at this position. FAU - Lazaro, A M AU - Lazaro AM AD - Department of Pediatrics, C.W. Bill Young Marrow Donor Research and Recruitment Program, Georgetown University Medical Center, 3970 Reservoir Road NW, Washington, DC 20057, USA. FAU - Xiao, Y AU - Xiao Y FAU - Regenscheid, A AU - Regenscheid A FAU - Ng, J AU - Ng J FAU - Hurley, C K AU - Hurley CK FAU - Posch, P E AU - Posch PE LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PL - England TA - Tissue Antigens JT - Tissue antigens JID - 0331072 RN - 0 (HLA Antigens) RN - 0 (HLA-B Antigens) RN - 0 (HLA-DR Antigens) RN - 0 (HLA-DRB1 Chains) SB - IM MH - *Alleles MH - Bone Marrow/immunology MH - Bone Marrow Transplantation MH - HLA Antigens/*genetics MH - HLA-B Antigens/*genetics MH - HLA-DR Antigens/*genetics MH - HLA-DRB1 Chains MH - Humans MH - Tissue Donors EDAT- 2009/03/26 09:00 MHDA- 2009/05/30 09:00 CRDT- 2009/03/26 09:00 PHST- 2009/03/26 09:00 [entrez] PHST- 2009/03/26 09:00 [pubmed] PHST- 2009/05/30 09:00 [medline] AID - TAN1226 [pii] AID - 10.1111/j.1399-0039.2009.01226.x [doi] PST - ppublish SO - Tissue Antigens. 2009 Apr;73(4):364-72. doi: 10.1111/j.1399-0039.2009.01226.x.