title: HLA-DR gene frequencies in the Japanese population obtained by oligonucleotide genotyping.
abstract: We determined HLA-DRB types of 375 randomly chosen healthy Japanese donors using a set of 29 different sequence-specific oligonucleotide (SSO) probes directed against various DRB alleles. Except for a few cases, these SSOs enabled us to identify 33 different DRB types including those detectable only by SSO genotyping. Gene frequencies were calculated for each of the DRB types identified. The "blank" frequency calculated by our SSO typing was essentially zero, in contrast to the considerably high "blank" frequencies reported at serological HLA-DR or cellular HLA-D workshops. This indicates that almost all of the DRB types in the Japanese population are positively detectable by our SSO typing. By comparing the gene frequencies for each of the DR types obtained by our SSO typing with those obtained by immunological typing at workshops, significant differences were observed for several of the DR types.
authors.affiliation: Department of Transplantation Immunology, Kitasato University School of Medicine, Sagamihara, Japan.
authors.forename: F
authors.initials: F
authors.lastname: Obata
authors.forename: K
authors.initials: K
authors.lastname: Ito
authors.forename: T
authors.initials: T
authors.lastname: Kaneko
authors.forename: Y G
authors.initials: YG
authors.lastname: Yang
authors.forename: K
authors.initials: K
authors.lastname: Onda
authors.forename: I
authors.initials: I
authors.lastname: Ito
authors.forename: N
authors.initials: N
authors.lastname: Yabe
authors.forename: K
authors.initials: K
authors.lastname: Watanabe
authors.forename: N
authors.initials: N
authors.lastname: Kashiwagi
mesh_terms: D000483:Alleles; D001483:Base Sequence; D001782:Blood Donors; D005787:Gene Frequency; D005838:Genotype; D006684:HLA-DR Antigens / Q000032:analysis* / Q000235:genetics; D007564:Japan; D007959:Lymphocyte Culture Test, Mixed; D008969:Molecular Sequence Data; D015345:Oligonucleotide Probes; D016133:Polymerase Chain Reaction
chemical_list: D006684:HLA-DR Antigens; D015345:Oligonucleotide Probes