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Zhou Y, Wang Y, Ni H, Deng W, Liu D, Xu J, Cui N, Wu Y, Fu S, Xiao L, Liu H, Qi K, Wang S, Xiong F, Miao Y. The Potential Significance of ABO Genotyping for Donor Selection in Kidney Transplantation. Front Immunol 2020; 11:608716. [PMID: 33329606 PMCID: PMC7710857 DOI: 10.3389/fimmu.2020.608716] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 10/26/2020] [Indexed: 01/02/2023] Open
Abstract
Background The ABO blood group system is clinically important in kidney transplantation, but ABO genotyping fails to attract sufficient attention in some countries and regions. We identified one case of early graft dysfunction due to an ABO genotype mismatch. Here, we performed ABO genotyping in blood samples, analyzed grouping discrepancies, and investigated the weak A subgroup frequency in kidney transplantation candidates. Methods Blood samples from 302 uremic patients with grouping discrepancies and 356 uremic patients with type A blood were analyzed using standard serologic serotyping techniques. The ABO genotypes and alleles were analyzed by polymerase chain reaction sequence-specific primer (PCR-SSP) and sequence-based typing (PCR-SBT). Results All 302 uremic patients with grouping discrepancies carried weak ABO subgroup alleles and 77.48% carried irregular ABO antibodies. The discrepancy rate between serotyping and genotyping was 42.38%, and the mismatching rate of donor selection according to serotype reached 88.74%. And 2.53% of 356 uremic patients with type A blood were determined to be in the weak A subgroup, which was a higher percentage than that observed in the healthy Chinese population (0.53%) by serological screening, but much lower than that observed in Caucasians (20%). Conclusion We revealed the high risk of blood type misjudgment and genetically ABO-mismatched transplantation if serological test was performed only in blood-group typing. Improved precision of ABO genotyping is crucial for successful kidney transplantation and reasonable organ allocation.
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Affiliation(s)
- Yi Zhou
- Division of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yuchen Wang
- Division of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Haiqiang Ni
- Division of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wenfeng Deng
- Division of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ding Liu
- Division of Transplantation, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Jian Xu
- Division of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Naiqian Cui
- Division of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yihan Wu
- Division of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Shaojie Fu
- Division of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Lulu Xiao
- Division of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hailiang Liu
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Ka Qi
- Hemodialysis Center, Qinhuangdao Charity Hospital, Qinhuangdao, China
| | - Shaoqing Wang
- Nephrology Department, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Fu Xiong
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Yun Miao
- Division of Transplantation, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Ying Y, Hong X, Xu X, Liu Y, Lan X, Ma K, Zhu H, Zhu F, Lv H, Yan L. Serological characteristic and molecular basis of A2 subgroup in the Chinese population. Transfus Apher Sci 2012; 48:67-74. [PMID: 22980917 DOI: 10.1016/j.transci.2012.08.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Accepted: 08/16/2012] [Indexed: 11/29/2022]
Abstract
BACKGROUND A2 phenotype is a common subgroup of blood group A, but the serological characteristic and genetics basis of A2 phenotype currently was rare reported in the Chinese Han population. Here, a large scale study of the serology and genetics of A2 and A2B phenotypes was performed. METHODS/MATERIALS 11263 Chinese individuals with group A and AB phenotypes were determined for A2 antigen with the standard serological method. The full coding region of the ABO gene was sequenced in the individuals with A2 and A2B phenotypes. Some samples including each ABO genotypes were chosen for determining the activity of glycosyltransferase A (GTA) in plasma. RESULTS 134 individuals were assigned as A2 and A2B phenotypes in 11263 individuals. There was imbalance in A2 and A2B phenotypes and the proportion of A2B among AB samples was significantly higher than that of A2 in group A samples. All samples of the A2 and A2B phenotypes were classified into A2-related allele group, A1-related allele group and the other group based on kind of the ABO genotype. Four novel A2-related alleles (A217, A218, A219, A220) were identified. The individuals with same genotype showed different agglutination strength with anti-A1 and anti-H on their RBCs. The plasma from individuals with A2-related allele had almost no GTA activity, while plasma from individuals with A1-related allele had some GTA activity. CONCLUSION A2 and A2B phenotypes could derive from different genotypes and the serological characteristic may be heterogeneity in the Chinese Han population.
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Affiliation(s)
- Yanlin Ying
- Blood Center of Zhejiang Province, Hangzhou, Zhejiang, People's Republic of China
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Zhu F, Tao S, Xu X, Ying Y, Hong X, Zhu H, Yan L. Distribution of ABO blood group allele and identification of three novel alleles in the Chinese Han population. Vox Sang 2009; 98:554-9. [PMID: 20003128 DOI: 10.1111/j.1423-0410.2009.01291.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND The ABO blood group system is clinically important in blood transfusion. The molecular characterization of ABO blood group has clinical and anthropological importance. Here, we determined the ABO alleles distribution and identified three novel alleles in the Chinese Han population. STUDY DESIGN AND METHODS Four hundred and seventeen Chinese Han individuals were determined by standard serologic techniques for the ABO blood group phenotypes. The ABO genotypes and alleles were analysed by polymerase chain reaction sequence-based typing (PCR-SBT) for sequencing exon 6 to 7 of the ABO gene. The polymorphisms of intron 5 and 6 of the ABO gene were also analysed by PCR-SBT. The two haplotypes including new alleles were separated by a Dynabeads M-270 Streptavidin protocol. RESULTS All ABO genotypes of the samples were consistent with the phenotypes. Fourteen alleles were identified based on the nucleotide sequences of exon 6 and 7, with five common alleles (A101, A102, B101, O01 and O02), six known rare alleles (A205, B110, O04, O05, O07 and O50) and three novel alleles (B112, CisAB06 and 061). The three new alleles appeared with the frequencies of 0.12%, 0.12% and 0.36%, respectively. CONCLUSION The detailed frequencies distribution of ABO alleles was studied in the Chinese Han population. We identified 14 alleles, including 3 novel alleles.
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Affiliation(s)
- F Zhu
- Blood Center of Zhejiang Province, Hangzhou, Zhejiang, People's Republic of China
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