1
|
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; 34:287-297. [PMID: 38804163 DOI: 10.1111/tme.13055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [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.
Collapse
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
| |
Collapse
|
2
|
Zhang J, Yuan W, Hong X, Ying Y, Zhu F. Simultaneous high throughput genotyping of 36 blood group systems using NGS based on probe capture technology. Heliyon 2024; 10:e33608. [PMID: 39040346 PMCID: PMC11260914 DOI: 10.1016/j.heliyon.2024.e33608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 06/18/2024] [Accepted: 06/24/2024] [Indexed: 07/24/2024] Open
Abstract
Human blood group antigen has important biological functions, and transfusion of incompatible blood can cause alloimmunization and may lead to serious hemolytic reactions. Currently, serological methods are most commonly used in blood group typing. However, this technique has certain limitations and cannot fully meet the increasing demand for the identification of blood group antigens. This study describes a next-generation sequencing (NGS) technology platform based on exon and flanking region capture probes to detect full coding exon and flanking intron regions of the 36 blood group systems, providing a new high-throughput method for the identification of blood group antigens. The 871 capture probes were designed for the exon and flanking intron sequences of 36 blood group system genes, and synchronization analysis for 36 blood groups was developed. The library for NGS was tested using the MiSeq Sequencing Reagent Kit (v2, 300 cycles) by Illumina NovaSeq, and the data were analyzed by the CLC Genomics Workbench 21.0 software. A total of 199 blood specimens have been sequenced for the 41 genes from 36 blood groups. Among them, heterozygote genotypes were found in the ABO, Rh, MNS, Lewis, Duffy, Kidd, Diego, Gerbich, Dombrock, Globoside, JR, LAN, and Landsteiner-Wiene blood group systems. Only the homozygous genotype was found in the remaining 22 blood group systems. The obtained data in the NGS method shows a good correlation (99.98 %) with those of the polymerase chain reaction-sequence-based typing. An NGS technology platform for 36 blood group systems genotyping was successfully established, which has the characteristics of high accuracy, high throughput, and wide coverage.
Collapse
Affiliation(s)
| | - Wenjing Yuan
- Blood Center of Zhejiang Province, Hangzhou, China
| | | | - Yanling Ying
- Blood Center of Zhejiang Province, Hangzhou, China
| | - Faming Zhu
- Blood Center of Zhejiang Province, Hangzhou, China
| |
Collapse
|
3
|
Nathalang O, Rassuree P, Intharanut K, Chaibangyang W, Nogués N. Genomic analysis of KEL*03 and KEL*04 alleles among Thai blood donors. Afr J Lab Med 2024; 13:2294. [PMID: 38629087 PMCID: PMC11019069 DOI: 10.4102/ajlm.v13i1.2294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 01/17/2024] [Indexed: 04/19/2024] Open
Abstract
Background The Kell blood group system is clinically important in transfusion medicine, particularly in patients with antibodies specific to Kell antigens. To date, genetic variations of the Kell metallo-endopeptidase (KEL) gene among Thai populations remain unknown. Objective This study aimed to determine the frequencies of KEL*03 and KEL*04 alleles among Thai blood donors using an in-house polymerase chain reaction-sequence-specific primer (PCR-SSP) method. Methods Blood samples obtained from 805 unrelated central Thai blood donors at a blood bank in Pathumthani, Thailand, from March 2023 to June 2023, were typed for Kpa and Kpb antigens using the column agglutination test, and the results for 400 samples were confirmed using DNA sequencing. A PCR-SSP method was developed to detect the KEL*03 and KEL*04 alleles, and genotyping results were validated using known DNA controls. DNA samples obtained from Thai donors in central (n = 2529), northern (n = 300), and southern (n = 427) Thailand were also genotyped using PCR-SSP for comparison. Results All 805 (100%) donors had the Kp(a-b+) phenotype. The PCR-SSP genotyping results agreed with the column agglutination test and DNA sequencing. All 3256 Thai blood donors had the homozygous KEL*04/KEL*04 genotype. Frequencies of the KEL*03 and KEL*04 alleles among Thai donors differed significantly from those of Japanese, Native American, South African, Brazilian, Swiss, and German populations. Conclusion This study found a 100% KEL*04 allele frequency in three Thai populations. These data could provide information on KEL*03 and KEL*04 allele frequencies to estimate the risk of alloimmunisation in Thai populations. What this study adds This study demonstrates that in-house PCR-SSP can be used to determine KEL*03 and KEL*04 alleles to predict Kpa and Kpb antigens. Even though only homozygous KEL*04/KEL*04 genotypes were found among Thai donor populations, the established PCR-SSP method may be useful for estimating the risk of alloimmunisation in other populations.
Collapse
Affiliation(s)
- Oytip Nathalang
- Graduate Program in Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathumthani, Thailand
| | - Panasya Rassuree
- Graduate Program in Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathumthani, Thailand
| | - Kamphon Intharanut
- Graduate Program in Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathumthani, Thailand
| | - Wanlapa Chaibangyang
- Graduate Program in Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathumthani, Thailand
| | - Núria Nogués
- Laboratori d’Immunohematologia Banc de Sang i Teixits, Barcelona, Spain
| |
Collapse
|
4
|
Wei L, Zhu S, Wen J, Liao Z, Luo G, Ji Y. The study of variant s antigen expression revealing a novel c.160C>T (p.Arg54Cys) variant on GYPB*s allele associated with partial s phenotype. Transfusion 2024; 64:380-387. [PMID: 38158881 DOI: 10.1111/trf.17697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 10/07/2023] [Accepted: 11/29/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND Little s antigen is mainly defined by a single nucleotide polymorphism at c.143C (p.Thr48) on the GYPB gene. Several variants on GYPB can alter the expression of s antigen. The aim of this study was to investigate the molecular basis of variant s antigen expression in the Chinese population. STUDY DESIGN AND METHODS A total of 4983 whole blood samples were collected to screen the individuals with discrepant s typing results using two different monoclonal anti-s. Then, the sequence of GYPB exon 4 was analyzed by Sanger sequencing. Flow cytometry analysis was performed to quantify s antigen expression on red blood cells (RBCs). In vitro expression study was performed to verify the effect of the GYPB variants identified on the expression of s antigen. RESULTS Four donors were identified to have discrepant s typing results. Sanger sequencing showed that three donors carried the c.173C > G variant (p.Pro58Arg) specific for sD antigen, the other one carried a novel GYPB (c.160C > T, p.Arg54Cys) variant. Flow cytometry identified a partial and weak expression of s antigen on the RBCs of the four donors. Furthermore, in vitro expression study confirmed the effect of the two variants on the s antigen expression. CONCLUSION The results demonstrated that in addition to p.Thr48, the two extra amino acids p.Arg54 and p.Pro58 are also important for full expression of s antigen. Since the individuals with partial s antigen are at risk for the development of alloanti-s, it is important to select at least two different monoclonal anti-s for correct s typing.
Collapse
Affiliation(s)
- Ling Wei
- Institute of Clinical Blood Transfusion, Guangzhou Blood Center, Guangzhou, China
| | - Siying Zhu
- Institute of Clinical Blood Transfusion, Guangzhou Blood Center, Guangzhou, China
| | - Jizhi Wen
- Institute of Clinical Blood Transfusion, Guangzhou Blood Center, Guangzhou, China
| | - Zhijian Liao
- Institute of Clinical Blood Transfusion, Guangzhou Blood Center, Guangzhou, China
| | - Guangping Luo
- Institute of Clinical Blood Transfusion, Guangzhou Blood Center, Guangzhou, China
| | - Yanli Ji
- Institute of Clinical Blood Transfusion, Guangzhou Blood Center, Guangzhou, China
| |
Collapse
|
5
|
Weidner L, Allhoff W, Pistorius C, Witt V, Rohde E, Schistal E, Jungbauer C. When the available blood supply mismatches the needs of the patient. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2023; 21:378-384. [PMID: 36346886 PMCID: PMC10497382 DOI: 10.2450/2022.0166-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 10/12/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Substantial regional differences in the genetic patterns related to blood group have been observed across different continents. This diversity means that the blood supply, as an essential part of patient care, is increasingly impacted by global migration. Consequently, the Austrian blood donor population does not match the immigrant patient population. This mismatch is likely to result in the formation of alloantibodies to red cell antigens in the chronically transfused. Subsequently, major difficulties in providing compatible blood emerge. MATERIAL AND METHODS The study included patients of African origin (n=290) and Caucasians who represent the Austrian donor population (n=1,017). Genetic typing was performed for up to 69 blood group polymorphisms with a multiplex sequence specific primer-PCR including high frequency antigens and antigens for which antisera are not commercially available. By assessing differences in antigen frequencies between the two populations, and using these data for prophylactic matching, we aim to develop tools to increase the quality of patient care. RESULTS Results indicate various and significant differences (p<0.0001) in antigen frequencies between African patients and the European donor population, especially in the MNS, Duffy, Knops and Rhesus systems. DISCUSSION Our data highlight the importance of matching the donor population to the demographics of the patient population. In addition, it underlines the need to recruit donors of African origin and to focus on the upcoming challenges, such as malaria semi-immunity and a significantly higher rate of infectious disease in this population. It is also recommended to apply extended genetic typing to detect rare blood types, and (cryo)storage of rare blood in national and international rare blood banks. Co-operation with regional blood banks should also be encouraged.
Collapse
Affiliation(s)
- Lisa Weidner
- Austrian Red Cross, Blood Service for Vienna, Lower Austria and Burgenland, Vienna, Austria
| | - Wolfgang Allhoff
- Austrian Red Cross, Blood Service for Vienna, Lower Austria and Burgenland, Vienna, Austria
| | - Charlotte Pistorius
- Austrian Red Cross, Blood Service for Vienna, Lower Austria and Burgenland, Vienna, Austria
| | - Volker Witt
- Austrian Red Cross, Blood Service for Vienna, Lower Austria and Burgenland, Vienna, Austria
- St. Anna Kinderspital, Department for Pediatrics, Medical University of Vienna (MUW),Vienna, Austria
| | - Eva Rohde
- Department of Transfusion Medicine, Paracelsus Medical University of Salzburg, Salzburg, Austria
| | - Elisabeth Schistal
- Austrian Red Cross, Blood Service for Vienna, Lower Austria and Burgenland, Vienna, Austria
| | - Christof Jungbauer
- Austrian Red Cross, Blood Service for Vienna, Lower Austria and Burgenland, Vienna, Austria
| |
Collapse
|
6
|
Vorholt SM, Lenz V, Just B, Enczmann J, Fischer JC, Horn PA, Zeiler TA, Balz V. High-Throughput Next-Generation Sequencing of the Kidd Blood Group: Unexpected Antigen Expression Properties of Four Alleles and Detection of Novel Variants. Transfus Med Hemother 2022; 50:51-65. [PMID: 36818776 PMCID: PMC9911998 DOI: 10.1159/000525326] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 05/30/2022] [Indexed: 11/19/2022] Open
Abstract
Background The blood supply for patients with foreign ethnic backgrounds can be challenging, as they often have blood group and HPA patterns that differ from the variants prevalent in the German population. In addition, hemoglobinopathies requiring regular blood transfusion may be more common in such populations. High-throughput genotyping tests can facilitate the identification of the most compatible blood products, thereby reducing the risk of transfusion reactions. The present study reports the results of a molecular study for the Kidd (JK) blood group. Allele frequencies and antigen prevalence data are presented for >8,000 individuals of various origins. Material and Methods More than 8,000 blood donors were genotyped for 22 blood group systems and 5 HPA genes using an amplicon-based next-generation sequencing (NGS) approach. As part of the test system, we focused on the JK system in more detail. Double-ARMS PCR analysis was performed for the haplotype phasing of the JK1/JK2 and two more common synonymous polymorphisms. We performed transcript analysis to detect potential alternative splice products. For a subset of samples, a comparison between serotype and red cell genotype was conducted. Allele frequencies were determined for geographically different panels of individuals. Results We successfully genotyped the JK blood group for 99.6% of the samples. Haplotype phasing revealed 96 different alleles. For several alleles that carry one of the synonymous SNVs c.588A>G and c.810G>A, we could not confirm the reported JK phenotypes. We found a higher frequency of JK:1 alleles for all populations except Iraqis. JK*01W.01 alleles were more common in the Asian groups and sub-Saharan Africans. A variant of the allele JK*02N.01 was present exclusively in Southeast Asians. Conclusion Genotyping for JK antigens with a targeted NGS assay can easily be performed in routine. The interpretation that c.588A>G leads to a weak phenotype and c.810G>A to a null phenotype is questionable. IDs as well as the descriptions of alleles carrying these SNVs should be revised in the ISBT JK table.
Collapse
Affiliation(s)
- Stephanie M. Vorholt
- Institute for Transplantation Diagnostics and Cell Therapeutics, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Veronika Lenz
- Institute for Transfusion Medicine, University Hospital Essen, Essen, Germany
| | - Burkhard Just
- German Red Cross Blood Service West, Hagen/Breitscheid/Münster, Germany
| | - Jürgen Enczmann
- Institute for Transplantation Diagnostics and Cell Therapeutics, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Johannes C. Fischer
- Institute for Transplantation Diagnostics and Cell Therapeutics, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Peter A. Horn
- Institute for Transfusion Medicine, University Hospital Essen, Essen, Germany
| | - Thomas A. Zeiler
- German Red Cross Blood Service West, Hagen/Breitscheid/Münster, Germany
| | - Vera Balz
- Institute for Transplantation Diagnostics and Cell Therapeutics, University Hospital Düsseldorf, Düsseldorf, Germany,*Vera Balz,
| |
Collapse
|
7
|
Speckmeier E, Pommereau A, Grosser KC, Mors H, Maier TC, Licher T, Bärenz F. A high-throughput screening assay for mutant isocitrate dehydrogenase 1 using acoustic droplet ejection mass spectrometry. SLAS DISCOVERY : ADVANCING LIFE SCIENCES R & D 2022; 27:298-305. [PMID: 35460923 DOI: 10.1016/j.slasd.2022.04.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/23/2022] [Accepted: 04/11/2022] [Indexed: 06/14/2023]
Abstract
Acoustic droplet ejection mass spectrometry (ADE-MS) has recently emerged as a promising label-free, MS-based readout method for high throughput screening (HTS) campaigns in early pharmaceutical drug discovery, since it enables high-speed analysis directly from 384- or 1536-well plates. In this manuscript we describe our characterization of an ADE-MS based high sample content enzymatic assay for mutant isocitrate dehydrogenase 1 (IDH1) R132H with a strong focus on assay development. IDH1 R132H has become a very attractive therapeutic target in the field of antitumor drug discovery, and several pharmaceutical companies have attempted to develop novel small molecule inhibitors against mutant IDH1. With the development of an mIDH1 ADE-MS based HTS assay and a detailed comparison of this new readout technique to the commonly used fluorescence intensity mIDH1 assay, we demonstrated good correlation of both methods and were able to identify new potent inhibitors of mIDH1.
Collapse
Affiliation(s)
- Elisabeth Speckmeier
- Sanofi, Integrated Drug Discovery, Industriepark Hoechst, Frankfurt am Main, Hessen, Germany.
| | - Antje Pommereau
- Sanofi, Integrated Drug Discovery, Industriepark Hoechst, Frankfurt am Main, Hessen, Germany
| | - Kay-Christoph Grosser
- Sanofi, Integrated Drug Discovery, Industriepark Hoechst, Frankfurt am Main, Hessen, Germany
| | - Hartmut Mors
- Sanofi, Integrated Drug Discovery, Industriepark Hoechst, Frankfurt am Main, Hessen, Germany
| | - Thomas C Maier
- Sanofi, Integrated Drug Discovery, Industriepark Hoechst, Frankfurt am Main, Hessen, Germany
| | - Thomas Licher
- Sanofi, Integrated Drug Discovery, Industriepark Hoechst, Frankfurt am Main, Hessen, Germany
| | - Felix Bärenz
- Sanofi, Integrated Drug Discovery, Industriepark Hoechst, Frankfurt am Main, Hessen, Germany.
| |
Collapse
|
8
|
Al-Riyami AZ, Al Hinai D, Al-Rawahi M, Al-Hosni S, Al-Zadjali S, Al-Marhoobi A, Al-Khabori M, Al-Riyami H, Denomme GA. Molecular blood group screening in Omani blood donors. Vox Sang 2021; 117:424-430. [PMID: 34647328 DOI: 10.1111/vox.13204] [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: 06/18/2021] [Revised: 08/24/2021] [Accepted: 08/29/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND OBJECTIVES Blood group genotyping has been used in different populations. This study aims at evaluating the genotypes of common blood group antigens in the Omani blood donors and to assess the concordance rate with obtained phenotypes. MATERIAL AND METHODS Blood samples from 180 Omani donors were evaluated. Samples were typed by serological methods for the five blood group systems MNS, RH (RHD/RHCE), KEL, FY and JK. Samples were genotyped using RBC-FluoGene vERYfy eXtend kit (inno-train©). Predicted phenotypic variants for 70 red blood cell antigens among the MNS, RH (RHD/RHCE), KEL, FY, JK, DO, LU, YT, DI, VEL, CO and KN blood group systems were assessed. RESULTS Simultaneous phenotype and genotype results were available in 130 subjects. Concordance rate was >95% in all blood group systems with exception of Fy(b+) (87%). Homozygous GATA-1 mutation leading to erythroid silencing FY*02N.01 (resulting in the Fy(b-)ES phenotype) was detected in 81/112 (72%) of genotyped samples. In addition, discrepant Fyb phenotype/genotype result was obtained in 14/112 samples; 13 of which has a heterozygous GATA-1 mutation and one sample with a wild GATA genotype. D and partial e c.733C>G variants expressing the V+VS+ phenotype were found in 22/121 (18.2%) and 14/120 (11.7%) of the samples, respectively. Di(a-b+), Js(a-b+), Yt(a+b-) and Kn(a+b-) genotype frequencies were 99.4%, 95.8%, 91.9% and 97.7%, respectively. CONCLUSION In conclusion, we report a high frequency of FY*02N.01 allele due to homozygous c.-67T>C GATA-1 single-nucleotide variation. This is the first study reporting the detailed distribution of common and rare red cell genotypes in Omani blood donors.
Collapse
Affiliation(s)
- Arwa Z Al-Riyami
- Department of Haematology, Sultan Qaboos University Hospital, Muscat, Oman
| | - Dina Al Hinai
- College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Mohammed Al-Rawahi
- Department of Haematology, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Saif Al-Hosni
- Department of Haematology, Sultan Qaboos University Hospital, Muscat, Oman
| | | | - Ali Al-Marhoobi
- Department of Haematology, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Murtadha Al-Khabori
- Department of Haematology, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Hamad Al-Riyami
- Department of Genetics, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Gregory A Denomme
- Diagnostic Laboratories, Versiti Blood Center of Wisconsin, Milwaukee, Wisconsin, USA
| |
Collapse
|
9
|
Flesch BK, Carbol A. Diagnostik und Therapie einer Anti-CD36-induzierten neonatalen Alloimmunthrombozytopenie. TRANSFUSIONSMEDIZIN 2021. [DOI: 10.1055/a-1342-1006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
ZusammenfassungMütterliche Antikörper gegen das HPA-1a auf kindlichen Thrombozyten sind der Hauptverursacher einer fetalen oder neonatalen Alloimmunthrombozytopenie (FNAIT). In asiatischen Populationen wurden wiederholt Isoantikörper gegen CD36 als ursächlich im Zusammenhang mit der FNAIT beschrieben, wohingegen in Mitteleuropa die CD36-Defizienz und damit die Möglichkeit einer Immunisierung praktisch unbekannt sind. Das erschwert deutlich die Transfusion mit kompatiblen Thrombozyten bei FNAIT-Fällen, z. B. bei Neugeborenen asiatischer Abstammung. Bei einem Neugeborenen arabischstämmiger Eltern wurde eine Anti-CD36-induzierte FNAIT diagnostiziert. Die Thrombozytenwerte konnten erfolgreich durch die Gabe HPA-unausgewählter Apheresethrombozytenkonzentrate (ATK) stabilisiert werden. Durch ein vorangegangenes Forschungsprojekt zum CD36-Screening bei Blutspendern arabischer Herkunft stand zusätzlich kurz darauf ein ATK mit sehr schwacher CD36-Expression zur Verfügung, das aber nicht mehr benötigt wurde. Dieser Fall weist somit alternative Therapiemöglichkeiten bei einer Anti-CD36-induzierten FNAIT auf.
Collapse
Affiliation(s)
- Brigitte K. Flesch
- DRK Blutspendedienst Rheinland-Pfalz und Saarland, Bad Kreuznach, Deutschland
| | - Alexander Carbol
- DRK Blutspendedienst Rheinland-Pfalz und Saarland, Bad Kreuznach, Deutschland
| |
Collapse
|
10
|
Heaton C, Witt M, Cole L, Eyre J, Tazzyman S, McColm R, Francese S. Detection and mapping of haemoglobin variants in blood fingermarks by MALDI MS for suspect "profiling". Analyst 2021; 146:4290-4302. [PMID: 34105523 DOI: 10.1039/d1an00578b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Over the past seven years Matrix Assisted Laser Desorption Ionisation Mass Spectrometry Profiling (MALDI MSP) and Imaging (MALDI MSI) have proven to be feasible tools for the detection of blood and its provenance in stains and fingermarks. However, whilst this capability as a confirmatory test addresses the primary questions at the scene of a violent crime, additional intelligence recoverable from blood can also prove important for investigations. A DNA profile is the most obvious and important example of such intelligence; however, it is not always suitable for identification purposes, depending on quantity, age and environmental conditions. Proteins are much more stable and determining the presence of haemoglobin variants in blood recovered at a crime scene may provide associative and possibly corroborating evidence on the presence of an individual at a particular location. This evidence gains more incriminatory value, the lower the incidence of the variant in a certain geographical area or population and may contribute to narrowing down the pool of suspects. In this study, a MALDI based mass spectrometric method has been developed and tested on six haemoglobin variants for their fast and reliable identification and mapping in blood fingermarks.
Collapse
Affiliation(s)
- Cameron Heaton
- Biomolecular Science Research Centre, Centre for Mass Spectrometry Imaging, Sheffield Hallam University, Sheffield, UK.
| | | | - Laura Cole
- Biomolecular Science Research Centre, Centre for Mass Spectrometry Imaging, Sheffield Hallam University, Sheffield, UK.
| | - Jason Eyre
- Sheffield Teaching Hospitals, Sheffield, UK
| | | | - Richard McColm
- Defence Science and Technology Laboratory, Porton Down, UK
| | - Simona Francese
- Biomolecular Science Research Centre, Centre for Mass Spectrometry Imaging, Sheffield Hallam University, Sheffield, UK.
| |
Collapse
|
11
|
Flesch BK, Scherer V, Opitz A, Ochmann O, Janson A, Steitz M, Zeiler T. Platelet CD36 deficiency is present in 2.6% of Arabian individuals and can cause NAIT and platelet refractoriness. Transfusion 2021; 61:1932-1942. [PMID: 33822386 DOI: 10.1111/trf.16398] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 03/17/2021] [Accepted: 03/17/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND CD36 isoantibodies are capable of inducing neonatal alloimmune thrombocytopenia (NAIT) and platelet refractoriness. As to now the CD36 type I deficiency has been reported in East Asian and African individuals. However, it is virtually unknown in Caucasians. The aim of this study was to display the prevalence of the CD36 deficiency within parts of the Arabian population in Germany. Secondly, we are presenting the case of a newborn suffering from NAIT which was induced by CD36 antibody. METHODS Platelet (p) CD36 was determined by flow cytometry on 1328 samples mainly from individuals of Arabian origin and a family with a neonate affected by NAIT. DNA sequencing was performed on all pCD36-negative samples. RESULTS Thirty-five (2.64%) of all donor samples were pCD36 negative, 19 (1.43%) had a weak expression. Including only individuals from the Arabian peninsula, frequencies were 3.39% and 1.75%, respectively. CD36 type I deficiency on both platelets and monocytes combined with a CD36 isoantibody were detected in the mother of the NAIT baby. The baby was successfully transfused with two HPA-unselected platelet concentrates. In case of need, two platelet units with a weak pCD36 expression were on hand. A total of 45 different CD36 mutations were detected within pCD36-negative individuals, some being homozygous, most of them only present on one allele. CONCLUSION The CD36-negative phenotype is present in a significant number of individuals of Arabian origin and enables CD36 isoimmunization in NAIT or refractoriness. Blood transfusion services should be aware of such cases.
Collapse
Affiliation(s)
- Brigitte K Flesch
- German Red Cross Blood Service Rhineland-Palatinate and Saarland, Bad Kreuznach, Germany.,German Red Cross Blood Service West, Hagen, Germany
| | - Vanessa Scherer
- German Red Cross Blood Service Rhineland-Palatinate and Saarland, Bad Kreuznach, Germany
| | - Andreas Opitz
- German Red Cross Blood Service Rhineland-Palatinate and Saarland, Bad Kreuznach, Germany
| | - Oswin Ochmann
- German Red Cross Blood Service Rhineland-Palatinate and Saarland, Bad Kreuznach, Germany
| | - Anne Janson
- German Red Cross Blood Service Rhineland-Palatinate and Saarland, Bad Kreuznach, Germany
| | - Monika Steitz
- German Red Cross Blood Service Rhineland-Palatinate and Saarland, Bad Kreuznach, Germany
| | | |
Collapse
|