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Simtong P, Jumnainsong A, Leelayuwat C. Genetic profile of RHCE, Kell, Duffy, Kidd, Diego and MNS hybrid glycophorins blood groups in ethnic northeastern Thais: Alleles, genotypes and risk of alloimmunisation. Transfus Med 2024. [PMID: 38804163 DOI: 10.1111/tme.13055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 04/17/2024] [Accepted: 05/16/2024] [Indexed: 05/29/2024]
Abstract
BACKGROUND Antibodies against blood group antigens play a key role in the pathophysiology of haemolytic transfusion reactions (HTRs) and haemolytic disease of the fetus and newborn (HDFN). This study aimed to determine the frequencies of alleles, genotypes, and risk of alloimmunisation of clinically significant blood group systems in ethnic northeastern Thais. METHODS In total, 345 unrelated, healthy, ethnic northeastern Thais were tested using the in-house PCR-sequence specific primers (PCR-SSP) method for simultaneously genotyping of RHCE, Kell, Duffy, Kidd, Diego and MNS glycophorin hybrids and results confirmed by Sanger sequencing. RESULTS In this cohort, the alleles RHCE*C (81.0%) and RHCE*e (84.8%) were more prevalent than RHCE*c (19.0%) and RHCE*E (15.2%). The most common predicted haplotype combinations of the RHCE alleles were C+c-E-e+(R1R1) (59.4%) followed by the C+c+E+e+ (R1R2) (20.6%) and C+c+E-e+ (R1r) (11.3%). The KEL*01 allele was not found in this study. The frequencies of FY*01 and FY*02 were 88.3% and 11.7%, respectively. The genotype FY*02/02 was found in four samples (1.2%). The frequencies of JK*01 and JK*02 were 52.5% and 47.5%, respectively. Homozygous JK*02/02 was found in 81 samples (23.5%). The frequencies of DI*01 and DI*02 were 0.6% and 99.4%, respectively. In total, 64 samples (18.6%) were found to carry the MNS glycophorin hybrids. CONCLUSIONS Our results indicated a possible high risk of c, E, Fyb, Jka, Jkb and Mia alloimmunisation in these populations. Moreover, methods established for genotyping clinically significant blood groups in this study can now be utilised in routine clinical application.
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Affiliation(s)
- Piyapong Simtong
- Department of Clinical Immunology and Transfusion Sciences, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand
- Centre for Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Amonrat Jumnainsong
- Department of Clinical Immunology and Transfusion Sciences, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand
- Centre for Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Chanvit Leelayuwat
- Department of Clinical Immunology and Transfusion Sciences, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand
- Centre for Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand
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Soares SDS, Aquino JR, Petrolli F, de Oliveira TB, Almeida S, Fiegenbaum M. Frequencies of genetic variants of the Rh, Kell, Duffy, Kidd, MNS and Diego systems of northwest Rio Grande do Sul, Brazil. Hematol Transfus Cell Ther 2023; 45:317-323. [PMID: 35715379 PMCID: PMC10499560 DOI: 10.1016/j.htct.2022.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 04/01/2022] [Accepted: 05/04/2022] [Indexed: 11/28/2022] Open
Abstract
INTRODUCTION To date, 340 antigen-organized 43 blood group systems are recognized, being ABO, Rh, Kell, Duffy, Kidd, MNS and Diego the most clinically relevant. The aim of this study was to assess the distribution of alleles and genotypes of the blood group systems Rh, Kell, Duffy, Kidd, MNS and Diego in 810 blood donors registered in the hemotherapy unit in northwest Rio Grande do Sul, Brazil METHODS: We evaluated the genetic variability of blood groups Rh (c.676G>C and c.307C>T), Kell (c.578C>T), Kidd (c.838A>G), Duffy (c.125A>G and c.1-67T>C), Diego (c.2561C>T) and MNS (c.143T>C) in 810 volunteer blood donors of Rio Grande do Sul, southern Brazil. The genetic profiling was performed through allelic discrimination assays using hydrolysis probes (TaqMan®) real-time PCR system. RESULTS The most frequent blood group genotypes found in our study population were: RHC*Cc (51.5%), RHC*ee (70.1%), FY*A/FY*B (49.3%), GATA -67T/T (93.5%), KEL*2/KEL*2 (93.4%), JK*A/JK*B (53.2%) and DI*02/DI*02 (95.4%). Some statistical differences were observed on comparing the population of this study with populations from other states in Brazil, mainly with population of Minas Gerais, Bahia and Paraná, which showed some differences from the population of Porto Alegre, which was more similar to those of Santa Catarina and São Paulo CONCLUSION: The frequency of red blood cell polymorphisms in our study is different from that of blood donors in other regions of Brazil. The results showed the importance of extended genotyping in adequate blood screening and the existence of rare genotypes in Brazilian regular blood donors.
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Affiliation(s)
- Scheila da Silva Soares
- Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
| | | | - Francini Petrolli
- Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
| | | | - Silvana Almeida
- Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
| | - Marilu Fiegenbaum
- Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil.
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Jadoon SA, Salamat N, Khan SA, Yazdani MS, Khatak N, Naeem MA. Genotyping for Dombrock blood group alleles in Northern Pakistani blood donors. Immunohematology 2021; 37:113-117. [PMID: 34591376 DOI: 10.21307/immunohematology-2021-016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Genotyping can be used to identify rare blood group antigens and to solve suspected blood group discrepancies, particularly when serologic methods are limited. Unfortunately, only a few such studies have been performed in Pakistan. The present study was conducted to determine the frequency of Dombrock blood group alleles by genotyping samples from blood donors from the north of Pakistan. Blood samples were taken with consent from 300 blood donors; DNA was extracted and tested for DO*01 and DO*02 alleles by sequence-specific primer polymerase chain reaction (PCR-SSP), followed by gel electrophoresis. Allele frequencies were calculated. The observed and expected genotype frequencies were compared using the χ2 test. The allele frequencies for DO*01 and DO*02 were 0.40 and 0.60, respectively. Genotype frequencies were in Hardy-Weinberg equilibrium. This study in Pakistani blood donors provides Dombrock blood group allele frequencies by PCR-SSP. This approach is efficient and economical and can be applied in developing countries. The findings can contribute to the development of in-house red blood cell panels, identification of rare blood types, and establishment of a national rare blood donor program. Genotyping can be used to identify rare blood group antigens and to solve suspected blood group discrepancies, particularly when serologic methods are limited. Unfortunately, only a few such studies have been performed in Pakistan. The present study was conducted to determine the frequency of Dombrock blood group alleles by genotyping samples from blood donors from the north of Pakistan. Blood samples were taken with consent from 300 blood donors; DNA was extracted and tested for DO*01 and DO*02 alleles by sequence-specific primer polymerase chain reaction (PCR-SSP), followed by gel electrophoresis. Allele frequencies were calculated. The observed and expected genotype frequencies were compared using the χ2 test. The allele frequencies for DO*01 and DO*02 were 0.40 and 0.60, respectively. Genotype frequencies were in Hardy-Weinberg equilibrium. This study in Pakistani blood donors provides Dombrock blood group allele frequencies by PCR-SSP. This approach is efficient and economical and can be applied in developing countries. The findings can contribute to the development of in-house red blood cell panels, identification of rare blood types, and establishment of a national rare blood donor program.
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Affiliation(s)
- S A Jadoon
- Army Medical College , Rawalpindi, Pakistan, Jadoon House H#107/8, S#11, Habibullah Colony, Abbottabad, Khyber Pakhtunkhwa , Pakistan
| | - N Salamat
- P-First Solutions , Islamabad , Pakistan
| | - S A Khan
- National University of Medical Sciences , Rawalpindi , Pakistan
| | - M S Yazdani
- Combined Military Hospital , Abbottabad , Pakistan
| | - N Khatak
- Combined Military Hospital Medical College , Lahore , Pakistan
| | - M A Naeem
- Armed Forces Institute of Transfusion , Rawalpindi , Pakistan
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Waskow G, Rodrigues MMDO, Höher G, Onsten T, Lindenau JDR, Fiegenbaum M, Almeida S. Genetic variability of blood groups in southern Brazil. Genet Mol Biol 2020; 43:e20180327. [PMID: 32478792 PMCID: PMC7263432 DOI: 10.1590/1678-4685-gmb-2018-0327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 08/08/2019] [Indexed: 12/03/2022] Open
Abstract
We evaluated genetic variability among the blood groups Kell
(c.578C > T and
c.1790T > C), Kidd
(c.838A > G), Duffy
(c.125A > G, c.265C >
T and c.1-67T > C),
Diego (c.2561C > T), MNS
(c.143T > C) and Rh
(c.676G > C) in Rio Grande do Sul in
southern Brazil. Genetic profiling from 382 volunteer blood donors was performed
through allelic discrimination assays using a hydrolysis probe (TaqMan®) with a
real-time PCR system. The sample was divided into two groups: Euro-Brazilian and
Afro-Brazilian. A comparison with studies from other regions of Brazil and the
1000 Genomes Database showed significant differences for almost all
polymorphisms evaluated in our population. Population differentiation between
the Euro- and Afro-Brazilian groups was low (FST value 0.055). However, when each locus was evaluated individually,
KEL*06 and FY*02N.01 allele frequencies
were significantly higher in the Afro-Brazilian group than in the Euro-Brazilian
group. Ethnic classification that uses phenotypic criteria to find blood units
with rare antigens may be important when there is a need to detect blood units
with an absence of Duffy antigens. There is also a greater probability of
finding donors in the Afro-Brazilian group. Taken together, the data indicate
strong European and African contributions to the gene pool, with intense
admixture.
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Affiliation(s)
- Gabriela Waskow
- Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Programa de Pós-Graduação em Biociências, Porto Alegre, RS, Brazil
| | | | - Gabriela Höher
- Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Programa de Pós-Graduação em Biociências, Porto Alegre, RS, Brazil
| | - Tor Onsten
- Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil
| | - Juliana Dal-Ri Lindenau
- Universidade Federal de Santa Catarina (UFSC), Departamento de Biologia Celular, Embriologia e Genética, Florianópolis, SC, Brazil
| | - Marilu Fiegenbaum
- Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Programa de Pós-Graduação em Biociências, Porto Alegre, RS, Brazil.,Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Departamento de Ciências Básicas da Saúde, Porto Alegre, RS, Brazil
| | - Silvana Almeida
- Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Programa de Pós-Graduação em Biociências, Porto Alegre, RS, Brazil.,Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Departamento de Ciências Básicas da Saúde, Porto Alegre, RS, Brazil
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