PMID- 20030786 OWN - NLM STAT- MEDLINE DCOM- 20100618 LR - 20221207 IS - 1399-0039 (Electronic) IS - 0001-2815 (Linking) VI - 75 IP - 3 DP - 2010 Mar TI - HLA-G*0105N and HLA-G 14 bp dimorphisms in exon 8 in four distinct populations in mainland China. PG - 227-34 LID - 10.1111/j.1399-0039.2009.01427.x [doi] AB - In this study, we investigated human leukocyte antigen (HLA)-G*0105N and the 14 bp deletion/insertion polymorphism in exon 8 of the HLA-G gene in 600 individuals from two southern Chinese Han populations (Hunan Han and Guangdong Han) and two northern Chinese populations (Inner Mongolia Han and Inner Mongolia Mongol), we also studied the linkage disequilibrium (LD) between HLA-G and HLA-A locus in these four populations. Our data showed that (1) the allele and haplotype frequencies of HLA-G and HLA-A loci did not differ significantly between the two southern Chinese Han populations, and showed remarkable homogeneity in the two northern Chinese populations; (2) HLA-G*0105N had significantly higher frequencies in the two northern Chinese populations with a frequency of 10.1% in the Inner Mongolia Han population, HLA-G 14 bp deletion/insertion frequency did not differ significantly between the southern and northern Chinese populations; (3) Ewens-Watterson homozygosity statistics at HLA-G*0105N, HLA-G 14 bp deletion/insertion polymorphism and HLA-A were consistent with neutral expectations for all populations; (4) HLA-G*0105N allele harbored the HLA-G 14 bp insertion in exon 8 and was linked to HLA-A*30, five HLA-G*0105N homozygotes were detected in the four populations; (5) haplotypes HLA-A*30-HLA-G*0105N and HLA-A*02-HLA-G 14 bp deletion were in significant LD across four populations, other LD patterns were more population-specific. Our data suggest that HLA-A*30-HLA-G*0105N-HLA-G 14 bp insertion is a conserved haplotype, the ethnic and/or geographic difference in HLA-G*0105N and HLA-G 14 bp distribution could largely be attributable to demographic factors other than selection. The LD patterns uncovered will facilitate the understanding of HLA-G role in associations previously described between HLA-A subregion and diseases. FAU - Tian, W AU - Tian W AD - Immunogenetics Research Group, Department of Immunology, College of Basic Medical Sciences, Central South University, Changsha, Hunan, China. tianwei3@yahoo.com FAU - Cai, J H AU - Cai JH FAU - Wang, F AU - Wang F FAU - Li, L X AU - Li LX FAU - Cao, Y AU - Cao Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20091218 PL - England TA - Tissue Antigens JT - Tissue antigens JID - 0331072 RN - 0 (Blood Group Antigens) RN - 0 (HLA Antigens) RN - 0 (HLA-A Antigens) RN - 0 (HLA-G Antigens) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Histocompatibility Antigens Class II) SB - IM MH - Alleles MH - Asian People/*genetics MH - Blood Group Antigens/genetics MH - China MH - *Exons MH - HLA Antigens/*genetics MH - HLA-A Antigens/genetics MH - HLA-G Antigens MH - Haplotypes MH - Histocompatibility Antigens Class I/*genetics MH - Histocompatibility Antigens Class II/genetics MH - Humans MH - Linkage Disequilibrium MH - Mutagenesis, Insertional MH - *Polymorphism, Genetic MH - Population/*genetics MH - Sequence Deletion EDAT- 2009/12/25 06:00 MHDA- 2010/06/19 06:00 CRDT- 2009/12/25 06:00 PHST- 2009/12/25 06:00 [entrez] PHST- 2009/12/25 06:00 [pubmed] PHST- 2010/06/19 06:00 [medline] AID - TAN1427 [pii] AID - 10.1111/j.1399-0039.2009.01427.x [doi] PST - ppublish SO - Tissue Antigens. 2010 Mar;75(3):227-34. doi: 10.1111/j.1399-0039.2009.01427.x. Epub 2009 Dec 18.