title: Limited diversity of HLA-DRB1*02 alleles and DRB1-DRB5 haplotype associations in four United States population groups.
abstract: At least 60 DRB1*02 positive individuals from each of four US population groups found within a hematopoietic stem cell volunteer donor registry - Caucasoids, African Americans, Asians/Pacific Islanders, and Hispanics - were randomly selected from a database of 82,979 individuals. DRB1*02 alleles were identified by DNA sequencing. A total of five of 23 known DRB1*02 alleles were detected. DRB1*15011 was the predominant DRB1*02 allele in Caucasoids and Hispanics. The most common DRB1*02 allele observed in African Americans was DRB1*1503, and DRB1*15021 in Asians/Pacific Islanders. Caucasoids were found to be the least diversified; only DRB1*15011 and DRB1*16011 were observed. A subset of individuals was also typed for DRB5 alleles by DNA sequencing. DRB5*01011, DRB5*0102, DRB5*0103, DRB5*0108N and DRB5*0202 were detected and nine DRB1-DRB5 haplotypes defined.
authors.affiliation: Department of Oncology, Department of Pediatrics, Georgetown University Medical Center, 3870 Reservoir Road NW, Washington, DC 20057, USA.
authors.forename: L A
authors.initials: LA
authors.lastname: Baldassarre
authors.forename: N K
authors.initials: NK
authors.lastname: Steiner
authors.forename: P
authors.initials: P
authors.lastname: Jones
authors.forename: T
authors.initials: T
authors.lastname: Tang
authors.forename: R
authors.initials: R
authors.lastname: Slack
authors.forename: J
authors.initials: J
authors.lastname: Ng
authors.forename: R J
authors.initials: RJ
authors.lastname: Hartzman
authors.forename: C K
authors.initials: CK
authors.lastname: Hurley
mesh_terms: D001741:Black or African American; D001213:Asian; D005787:Gene Frequency; D006684:HLA-DR Antigens / Q000235:genetics*; D059811:HLA-DRB1 Chains; D059847:HLA-DRB5 Chains; D006239:Haplotypes; D006630:Hispanic or Latino; D006801:Humans; D044465:White People
chemical_list: D006684:HLA-DR Antigens; D059811:HLA-DRB1 Chains; D059847:HLA-DRB5 Chains