title: Sequence-specific oligonucleotide typing in Shona patients with rheumatoid arthritis and healthy controls from Zimbabwe.
abstract: Seventy-two patients with rheumatoid arthritis (RA) and 82 controls have been typed with the XI Histocompatibility Workshop DRB1 and DQB1 sequence-specific oligonucleotide probes. The increase of DRB1*04 corresponds to an increase of the serologically defined DR4, previously found in a small group of Zimbabwean RA patients and we now show that this increase is due to the subtype DRB1*0405 in association with DQB1*0302. In addition there is a clearcut increase of DRB1*1001 equivalent to the serologically defined DR10. There was no increase amongst RA patients of DRB1*0102 which was the predominant DR1 sub-type amongst controls. In the course of our investigation, we observed a DRB1*04 variant which corresponds to DRB1*0412, newly defined in the XIth Histocompatibility Workshop.
authors.affiliation: Dept. of Immunology, London Hospital Medical College, U.K.
authors.forename: S
authors.initials: S
authors.lastname: Cutbush
authors.forename: I C
authors.initials: IC
authors.lastname: Chikanza
authors.forename: P A
authors.initials: PA
authors.lastname: Biro
authors.forename: C
authors.initials: C
authors.lastname: Bekker
authors.forename: M
authors.initials: M
authors.lastname: Stein
authors.forename: S
authors.initials: S
authors.lastname: Lutalo
authors.forename: J M
authors.initials: JM
authors.lastname: Garcia-Pacheco
authors.forename: D S
authors.initials: DS
authors.lastname: McCloskey
authors.forename: J S
authors.initials: JS
authors.lastname: Lanchbury
authors.forename: J A
authors.initials: JA
authors.lastname: Sachs
mesh_terms: D001172:Arthritis, Rheumatoid / Q000453:epidemiology / Q000235:genetics* / Q000276:immunology*; D001483:Base Sequence; D004247:DNA / Q000235:genetics; D014644:Genetic Variation / Q000235:genetics; D006683:HLA-DQ Antigens / Q000235:genetics; D059866:HLA-DQ beta-Chains; D006684:HLA-DR Antigens / Q000235:genetics; D059811:HLA-DRB1 Chains; D000949:Histocompatibility Antigens Class II / Q000235:genetics; D006801:Humans; D015345:Oligonucleotide Probes / Q000235:genetics*; D011110:Polymorphism, Genetic; D013019:South Africa / Q000453:epidemiology; D015030:Zimbabwe / Q000453:epidemiology
chemical_list: D006683:HLA-DQ Antigens; D059866:HLA-DQ beta-Chains; C069051:HLA-DQB1 antigen; D006684:HLA-DR Antigens; D059811:HLA-DRB1 Chains; D000949:Histocompatibility Antigens Class II; D015345:Oligonucleotide Probes; D004247:DNA