title: Three new DP alleles identified in a study of 800 unrelated bone marrow donor-recipient pairs.
abstract: HLA-DP genotyping of 800 unrelated donor-recipient pairs in phase 5 of a retrospective analysis of unrelated bone marrow transplantation, sponsored by the National Marrow Donor Program (NMDP), has identified two new DPB1 alleles (DPB1*8701 and DBP1*8801) and one new DPA1 (DPA1*0108) allele. Sequencing confirmed that all three of these new alleles represent novel combinations of previously described sequence motifs, reinforcing the notion that "gene conversion-like" events play an important role in generating HLA allelic diversity. The identification of these new alleles brings the total number of DPA1 alleles to 20 and the total number of DPB1 alleles to 94.
authors.affiliation: Children's Hospital Oakland Research Institute, Oakland, California, USA.
authors.forename: S E
authors.initials: SE
authors.lastname: Grams
authors.forename: J
authors.initials: J
authors.lastname: Wu
authors.forename: H J
authors.initials: HJ
authors.lastname: Noreen
authors.forename: J
authors.initials: J
authors.lastname: Mangaccat
authors.forename: M A
authors.initials: MA
authors.lastname: Cognato
authors.forename: S
authors.initials: S
authors.lastname: Johnson
authors.forename: M
authors.initials: M
authors.lastname: Segall
authors.forename: T M
authors.initials: TM
authors.lastname: Williams
authors.forename: A B
authors.initials: AB
authors.lastname: Begovich
mesh_terms: D000483:Alleles; D000595:Amino Acid Sequence; D001483:Base Sequence; D016026:Bone Marrow Transplantation; D006682:HLA-DP Antigens / Q000235:genetics*; D059867:HLA-DP alpha-Chains; D059868:HLA-DP beta-Chains; D006801:Humans; D008969:Molecular Sequence Data; D017386:Sequence Homology, Amino Acid; D012689:Sequence Homology, Nucleic Acid
chemical_list: D006682:HLA-DP Antigens; D059867:HLA-DP alpha-Chains; D059868:HLA-DP beta-Chains; C071172:HLA-DPA1 antigen; C071170:HLA-DPB1 antigen