title: Population and family studies of HLA-DR4 by use of oligonucleotide typing.
abstract: Using PCR and DR4 group-specific primers and SSO's we have examined DRB1*04 nucleotide polymorphisms in a population of 123 DR4-positive individuals (86 NAC, 27 Hispanics and 10 African Americans) from New York carrying a total of 134 DR4 haplotypes. We found that the distribution of DRB1*04 alleles on DR4 haplotypes differs in these three ethnic groups. In this relatively small population, certain alleles such as DRB1*0406 and 0411 were encountered only in Hispanics, while others such as DRB1*0403, 0408 and 0409 were found only in NAC (North American Caucasians). Such differences may be important in studies of HLA-DR4 and disease associations. Evidence from MLC and PLT studies of an HLA-B/DR crossover family, which was informative for the segregation of HLA-DRB1*0406 and DRB1*0407, supports the concept that subtypes of HLA-DR4 and/or associated HLA-DP alleles elicit T-cell alloreactivity, and may thus play a role in transplantation.
authors.affiliation: Department of Pathology, College of Physicians and Surgeons of Columbia University, New York, New York.
authors.forename: E
authors.initials: E
authors.lastname: Reed
authors.forename: F
authors.initials: F
authors.lastname: Lupu
authors.forename: P
authors.initials: P
authors.lastname: McManus
authors.forename: R
authors.initials: R
authors.lastname: Seigle
authors.forename: N
authors.initials: N
authors.lastname: Suciu-Foca
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D044383:Black People / Q000235:genetics; D004198:Disease Susceptibility / Q000276:immunology; D005006:Ethnicity / Q000235:genetics*; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D006684:HLA-DR Antigens / Q000235:genetics*; D015804:HLA-DR4 Antigen / Q000235:genetics*; D059811:HLA-DRB1 Chains; D006630:Hispanic or Latino / Q000235:genetics; D000949:Histocompatibility Antigens Class II / Q000235:genetics*; D006801:Humans; D008969:Molecular Sequence Data; D009519:New York City; D009693:Nucleic Acid Hybridization; D015345:Oligonucleotide Probes; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D017385:Sequence Homology; D044465:White People / Q000235:genetics; D001741:Black or African American
chemical_list: D006684:HLA-DR Antigens; D015804:HLA-DR4 Antigen; D059811:HLA-DRB1 Chains; D000949:Histocompatibility Antigens Class II; D015345:Oligonucleotide Probes