title: HLA DPA1/DPB1 genotype and haplotype frequencies, and linkage disequilibria in Nigeria, Liberia, and Gabon.
abstract: The frequencies of DPA1 and DPB1 alleles and their occurrence in haplotypic linkage were assessed and compared in Nigerian, Liberian, and Gabonese individuals. Differences were seen in the distribution patterns; these differences were more pronounced between the Gabonese and the other two populations than between Liberians and Nigerians. Several haplotypic DPA1-DPB1 combinations could be verified by homozygosity. Linkage disequilibria of DPA1-DPB1 combinations, indicating further probable haplotypes, were estimated. Although different allele and haplotype frequencies were recognized in the three subgroups, the linkage disequilibria were mostly either positive or negative in all populations.
authors.affiliation: Institut für Tropenmedizin und Medizinische Fakultät Charité, Humboldt-Universität zu Berlin, Germany.
authors.forename: J
authors.initials: J
authors.lastname: May
authors.forename: F P
authors.initials: FP
authors.lastname: Mockenhaupt
authors.forename: C C
authors.initials: CC
authors.lastname: Löliger
authors.forename: G O
authors.initials: GO
authors.lastname: Ademowo
authors.forename: A G
authors.initials: AG
authors.lastname: Falusi
authors.forename: S
authors.initials: S
authors.lastname: Jenisch
authors.forename: K
authors.initials: K
authors.lastname: Dippmann
authors.forename: L
authors.initials: L
authors.lastname: Schnittger
authors.forename: P G
authors.initials: PG
authors.lastname: Kremsner
authors.forename: U
authors.initials: U
authors.lastname: Bienzle
authors.forename: C G
authors.initials: CG
authors.lastname: Meyer
mesh_terms: D005006:Ethnicity / Q000235:genetics*; D005681:Gabon / Q000453:epidemiology; D005787:Gene Frequency / Q000235:genetics*; D005820:Genetic Testing; D005838:Genotype; D006682:HLA-DP Antigens / Q000235:genetics*; D059867:HLA-DP alpha-Chains; D059868:HLA-DP beta-Chains; D006239:Haplotypes / Q000235:genetics*; D006801:Humans; D007988:Liberia / Q000453:epidemiology; D015810:Linkage Disequilibrium / Q000235:genetics*; D009549:Nigeria / Q000453:epidemiology
chemical_list: D006682:HLA-DP Antigens; D059867:HLA-DP alpha-Chains; D059868:HLA-DP beta-Chains; C071172:HLA-DPA1 antigen; C071170:HLA-DPB1 antigen