title: HLA-DPB1, -DRB1, and -DQB1 polymorphism defined in Ewenki ethnic minority of China Inner Mongolia Autonomous Region.
abstract: In the present study, DNA typing for human leucocyte antigen (HLA)-DPB1, -DRB1, and -DQB1 was performed using polymerase chain reaction-sequence-based-typing (PCR-SBT) method on 94 randomly selected, healthy, unrelated individuals from the Ewenki ethnic population in Inner Mongolia Autonomous Region of China. A total of 64 alleles: 25 in DRB1, 19 in DQB1 and 20 in DPB1, were found. Among the 25 detected DRB1 alleles, DRB1*090102, DRB1*030101, DRB1*040101, DRB1*070101, and DRB1*120101/1206 were commonly observed, with frequencies of 16.0%, 13.3%, 10.1%, 7.4%, and 7.4%, respectively. The most predominant DQB1 allele was DQB1*030101/0309 with the frequency of 27.7%, followed by DQB1*0201/0202 (19.7%), DQB1*030302 (12.8%), DQB1*060101/060103 (6.4%), and DQB1*050201 (5.9%). Of the 20 detected DPB1 alleles, DPB1*020102 was the most frequent allele with the frequency of 25.5%. DPB1*0402 (21.3%), DPB1*0401 (20.2%), DPB1*0501 (10.6%) and DPB1*4101 (3.7%) were also very frequent alleles. The most frequent two-locus haplotypes observed in the Ewenki were: DRB1*030101-DQB1*0201/0202(10.7%), DRB1*090102-DQB1*03032(9.8%), DRB1*070101-DQB1*0201/0202 (5.5%), DRB1*070101-DQB1*030302 (5.2%) and DRB1*120101/1206-DQB1*030101/0309 (4.6%). The distribution of the HLA class II alleles and haplotypes frequencies as well as the dendrogram showed that the Ewenki population belongs to the northern group of Chinese.
authors.affiliation: Clinical Medical Research Center, Inner Mongolia Medical College, Huhehote, Inner Mongolia, China. xlsu@hotmalil.com
authors.forename: X
authors.initials: X
authors.lastname: Su
authors.forename: L
authors.initials: L
authors.lastname: Bi
authors.forename: R
authors.initials: R
authors.lastname: Hai
authors.forename: S
authors.initials: S
authors.lastname: Qimuge
authors.forename: M
authors.initials: M
authors.lastname: Ying
authors.forename: S
authors.initials: S
authors.lastname: Bahring
authors.forename: M
authors.initials: M
authors.lastname: Gong
mesh_terms: D000483:Alleles; D002681:China; D005006:Ethnicity / Q000235:genetics*; D005787:Gene Frequency; D005838:Genotype; D006682:HLA-DP Antigens / Q000097:blood / Q000235:genetics*; D059868:HLA-DP beta-Chains; D006683:HLA-DQ Antigens / Q000097:blood / Q000235:genetics*; D059866:HLA-DQ beta-Chains; D006684:HLA-DR Antigens / Q000097:blood / Q000235:genetics*; D059811:HLA-DRB1 Chains; D006239:Haplotypes; D006801:Humans; D010802:Phylogeny; D011110:Polymorphism, Genetic
chemical_list: D006682:HLA-DP Antigens; D059868:HLA-DP beta-Chains; C071170:HLA-DPB1 antigen; D006683:HLA-DQ Antigens; D059866:HLA-DQ beta-Chains; C069051:HLA-DQB1 antigen; D006684:HLA-DR Antigens; D059811:HLA-DRB1 Chains