title: [Polymorphism of HLA-B* 40 gene family in Chinese Han population].
abstract: To investigate the allele distribution of HLA-B* 40 gene family in Chinese Han population and to study its influence on the selection of clinical transplantation donor, the HLA-B genetypes of 381 individuals randomly selected from Chinese National Marrow Donor Project were identified by PCR-SSO, and then all the HLA-B* 40 positive samples from the above population and the B* 40 homozygote samples received from another 1 270 registered donors were analyzed by PCR-SBT and PCR-SSP at high resolution. The results showed that the population of 381 registered donors was examined at HLA-B locus by using Hardy-Weinberg equilibrium, the gene frequency of HLA-B* 40 was 0.1692. Four different HLA-B* 40 alleles (B* 4001, B* 4002, B* 4003, B* 4006) were identified, and the serological specificity was B60 and B61 respectively. The relative frequency of each allele was 0.1192 for B* 4001, 0.0154 for B* 4002, 0.0038 for B* 4003, 0.0308 for B* 4006. The distribution of B* 40 homozygote revealed a certain regularity at high-resolution, B* 40XX (B* 4001 group), at low-resolution; B* 4001 at high resolution; B* 40XX (B* 4002 group), at low-resolution; B* 4002 or B* 4006 or heterozygote of both at high-resolution. It is concluded that in Chinese Han population, predominant allele in HLA-B* 40 gene family is B* 4001, the high-resolution typing may be recommended to use for the selection of clinical transplantation donor.
authors.affiliation: Institute of Transfusion Medicine, Shenzhen Blood Center, Shenzhen 518035, China. shallylizhen@sahu.com
authors.forename: Zhen
authors.initials: Z
authors.lastname: Li
authors.forename: Shi-Zheng
authors.initials: SZ
authors.lastname: Jin
authors.forename: Liang-Hong
authors.initials: LH
authors.lastname: Cheng
authors.forename: Da-Ming
authors.initials: DM
authors.lastname: Wang
authors.forename: Dan
authors.initials: D
authors.lastname: Zhou
authors.forename: Hong-Yan
authors.initials: HY
authors.lastname: Zou
authors.forename: Guo-Guang
authors.initials: GG
authors.lastname: Wu
mesh_terms: D000483:Alleles; D044466:Asian People / Q000235:genetics*; D001782:Blood Donors; D002681:China; D005787:Gene Frequency; D005838:Genotype; D015235:HLA-B Antigens / Q000235:genetics*; D059947:HLA-B40 Antigen; D006801:Humans; D016133:Polymerase Chain Reaction / Q000379:methods; D011110:Polymorphism, Genetic
chemical_list: D015235:HLA-B Antigens; D059947:HLA-B40 Antigen