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Ahmed M, Jackson DE. The role of measuring peak systolic velocity of the middle cerebral artery blood flow and anti-K1 titre during pregnancy to detect foetuses with severe anaemia, foetal hydrops, and the requirement of intrauterine transfusion: A systematic review and meta-analysis. Hematol Transfus Cell Ther 2024; 46:524-532. [PMID: 38429195 DOI: 10.1016/j.htct.2024.02.002] [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: 04/14/2023] [Revised: 09/04/2023] [Accepted: 02/02/2024] [Indexed: 03/03/2024] Open
Abstract
The clinical manifestation of foetal anaemia caused by maternal Kell alloantibodies differs from that caused by non-Kell alloantibodies. Severe anaemia develops in the foetus in the early weeks of gestation; therefore, proper management and early intervention are important. A systematic review and meta-analysis was performed to determine whether the anti-K1 titre can determine the sequelae of Kell alloimmunised pregnancies. Prospective and retrospective cohort studies were used to conduct a systematic review following a comprehensive literature search, in accordance with the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines. Studies were screened based on a defined set of inclusion and exclusion criteria. A total of 5143 potential articles were identified. Ten studies were used in the meta-analysis of pregnancy outcomes for a specific anti-K1 titre cut-off. The meta-analysis identified statistical significance for intrauterine transfusion (ARD: 0.351; 95 % CI: 0.593-0.109; p-value = 0.004), hydrops (ARD: 0.808; 95 % CI: 1.145-0.472; p-value <0.001), intrauterine foetal death (ARD: 0.938; 95 % CI:1.344 to -0.533; p-value <0.001) and intrauterine transfusion for Doppler middle cerebral artery >1.5 MoM (ARD: 0.381; 95 % CI:1.079 to -0.317; p-value = 0.285). It was concluded that there is no correlation between anti-K1 titre and Kell sensitised pregnancy outcomes, but monitoring the anti-K1 titre is important to manage the pregnancy and it helps clinicians determine the need for intrauterine transfusions. Doppler middle cerebral artery peak systolic velocity is strongly correlated with foetal anaemia and is an efficient routine method for determining the need for intrauterine transfusions in pregnancies affected by anti-K1.
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Affiliation(s)
- Mufleha Ahmed
- Thrombosis and Vascular Diseases Laboratory, School of Health and Biomedical Sciences-STEM College, RMIT University, Bundoora, Victoria, Australia
| | - Denise E Jackson
- Thrombosis and Vascular Diseases Laboratory, School of Health and Biomedical Sciences-STEM College, RMIT University, Bundoora, Victoria, Australia.
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2
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Vlachodimitropoulou E, Shehata N, Ryan G, Clarke G, Lieberman L. Management of pregnancies with anti-K alloantibodies and the predictive value of anti-K titration testing. Lancet Haematol 2024:S2352-3026(24)00239-4. [PMID: 39208835 DOI: 10.1016/s2352-3026(24)00239-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2024] [Revised: 07/15/2024] [Accepted: 07/18/2024] [Indexed: 09/04/2024]
Abstract
Anti-KEL1 antigen (also referred to as anti-Kell, or anti-K) alloimmunisation is the second most common cause of severe haemolytic disease of the fetus and newborn, after anti-rhesus D antigen, and can cause substantial fetal morbidity and mortality. Both fetal erythropoietic suppression and haemolysis contribute to anaemia. Typically, once a clinically significant alloantibody is identified during pregnancy, antibody titration is performed as a screening test to predict the risk of anaemia and the need for maternal-fetal medicine referral. The titre is a semiquantitative laboratory method based on the underlying principle that increased maternal antibody concentrations are associated with an increased risk of fetal anaemia. Because some studies report that anti-K alloantibodies can lead to severe anaemia even at a low antibody titration, guidelines are inconsistent with respect to the role of titration testing. Some experts recommend maternal-fetal medicine referral and middle cerebral artery Doppler ultrasound without titration testing or with the use of a very low cutoff titre. This Viewpoint evaluates management for pregnancies affected by anti-K alloantibodies and highlights literature regarding the predictive value of anti-K titration testing.
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Affiliation(s)
- Evangelia Vlachodimitropoulou
- Department of Fetal Medicine, Mount Sinai Hospital, Toronto, ON, Canada; Department of Obstetrics & Gynaecology, University of Toronto, Toronto, ON, Canada.
| | - Nadine Shehata
- Division of Hematology, Mount Sinai Hospital, Toronto, ON, Canada; Department of Medicine, University of Toronto, Toronto, ON, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada; Division of Medical Oncology and Hematology, University Health Network, Toronto, ON, Canada
| | - Greg Ryan
- Department of Fetal Medicine, Mount Sinai Hospital, Toronto, ON, Canada; Department of Obstetrics & Gynaecology, University of Toronto, Toronto, ON, Canada
| | - Gwen Clarke
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, Canada
| | - Lani Lieberman
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada; Department of Clinical Pathology, University Health Network, Toronto, ON, Canada
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3
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Carpenter MC, Souter SC, Zipkin RJ, Ackerman ME. Current Insights Into K-associated Fetal Anemia and Potential Treatment Strategies for Sensitized Pregnancies. Transfus Med Rev 2024; 38:150779. [PMID: 37926651 PMCID: PMC10856777 DOI: 10.1016/j.tmrv.2023.150779] [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: 08/28/2023] [Revised: 09/21/2023] [Accepted: 09/27/2023] [Indexed: 11/07/2023]
Abstract
K-associated anemic disease of the fetus and newborn (K-ADFN) is a rare but life-threatening disease in which maternal alloantibodies cross the placenta and can mediate an immune attack on fetal red blood cells expressing the K antigen. A considerably more common disease, D-associated hemolytic disease of the fetus and newborn (D-HDFN), can be prophylactically treated using polyclonal α-D antibody preparations. Currently, no such prophylactic treatment exists for K-associated fetal anemia, and disease is usually treated with intrauterine blood transfusions. Here we review current understanding of the biology of K-associated fetal anemia, how the maternal immune system is sensitized to fetal red blood cells, and what is understood about potential mechanisms of prophylactic HDFN interventions. Given the apparent challenges associated with preventing alloimmunization, we highlight novel strategies for treating sensitized mothers to prevent fetal anemia that may hold promise not only for K-mediated disease, but also for other pathogenic alloantibody responses.
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Affiliation(s)
| | | | | | - Margaret E Ackerman
- Thayer School of Engineering, Dartmouth College, Hanover, NH, USA; Geisel School of Medicine at Dartmouth, Lebanon, NH, USA.
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Abels E, Adkins BD, Allen ES, Booth GS, DiGuardo MA, Ding JJ, Guarente J, Klein M, Stephens LD, Tormey CA, Woo JS, Jacobs JW. Updates in the care of the alloimmunized pregnant patient: A transfusion medicine and clinical laboratory perspective. Am J Clin Pathol 2023; 160:441-443. [PMID: 37471256 DOI: 10.1093/ajcp/aqad083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/22/2023] Open
Affiliation(s)
- Elizabeth Abels
- Department of Laboratory Medicine, Yale School of Medicine, New Haven, CT, US
| | - Brian D Adkins
- Division of Transfusion Medicine and Hemostasis, Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, US
| | - Elizabeth S Allen
- Department of Pathology, University of California San Diego, La Jolla, CA, US
| | - Garrett S Booth
- Department of Pathology, Microbiology & Immunology, Vanderbilt University Medical Center, Nashville, TN, US
| | | | - Jia Jennifer Ding
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, New Haven, CT, US
| | - Juliana Guarente
- Department of Pathology and Genomic Medicine, Thomas Jefferson University Hospital, Philadelphia, PA, US
| | - Monica Klein
- Department of Laboratory Medicine, Mayo Clinic, Rochester, MN, US
| | - Laura D Stephens
- Department of Pathology, University of California San Diego, La Jolla, CA, US
| | | | - Jennifer S Woo
- Department of Pathology, City of Hope National Medical Center, Irvine, CA, US
| | - Jeremy W Jacobs
- Department of Laboratory Medicine, Yale School of Medicine, New Haven, CT, US
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Quraishy N, Sapatnekar S. Immunohematological testing and transfusion management of the prenatal patient. Adv Clin Chem 2023; 117:163-208. [PMID: 37973319 DOI: 10.1016/bs.acc.2023.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
The primary indication for immunohematological testing in the prenatal patient is to detect and identify maternal red cell antibodies. If there are antibodies that are expected to hemolyze the fetus' red cells, their strength of reactivity must be tested, and the fetus' antigen status determined. After delivery, testing is performed to assess the extent of fetomaternal hemorrhage, as a large hemorrhage may require other therapeutic interventions. Another major role for immunohematological testing is to select blood components appropriately when intrauterine transfusion is required for fetal anemia resulting from maternal alloimmunization or some other cause. Supplementation with molecular methods has transformed the practice of immunohematology, particularly as it applies to typing for the D antigen of the Rh blood group system. Notwithstanding the advances in testing, close coordination and communication between the transfusion service and the obstetrics service are the foundation for ensuring the finest care for prenatal patients, and for new mothers and their infants. This review describes testing and transfusion practices for prenatal patients, using case presentations to highlight the management of selected immunohematological findings. It also includes a discussion of key patient management topics that are currently unresolved.
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Affiliation(s)
- NurJehan Quraishy
- Section of Transfusion Medicine, Department of Laboratory Medicine, Robert J. Tomsich Pathology & Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Suneeti Sapatnekar
- Section of Transfusion Medicine, Department of Laboratory Medicine, Robert J. Tomsich Pathology & Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, United States.
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Antigen density dictates RBC clearance, but not antigen modulation, following incompatible RBC transfusion in mice. Blood Adv 2021; 5:527-538. [PMID: 33496748 DOI: 10.1182/bloodadvances.2020002695] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 11/17/2020] [Indexed: 12/17/2022] Open
Abstract
Incompatible red blood cell (RBC) transfusion can result in life-threatening transfusion complications that can be challenging to manage in patients with transfusion-dependent anemia. However, not all incompatible RBC transfusions result in significant RBC removal. One factor that may regulate the outcome of incompatible RBC transfusion is the density of the incompatible antigen. Despite the potential influence of target antigen levels during incompatible RBC transfusion, a model system capable of defining the role of antigen density in this process has not been developed. In this study, we describe a novel model system of incompatible transfusion using donor mice that express different levels of the KEL antigen and recipients with varying anti-KEL antibody concentrations. Transfusion of KEL+ RBCs that express high or moderate KEL antigen levels results in rapid antibody-mediated RBC clearance. In contrast, relatively little RBC clearance was observed following the transfusion of KEL RBCs that express low KEL antigen levels. Intriguingly, unlike RBC clearance, loss of the KEL antigen from the transfused RBCs occurred at a similar rate regardless of the KEL antigen density following an incompatible transfusion. In addition to antigen density, anti-KEL antibody levels also regulated RBC removal and KEL antigen loss, suggesting that antigen density and antibody levels dictate incompatible RBC transfusion outcomes. These results demonstrate that antibody-induced antigen loss and RBC clearance can occur at distinct antigen density thresholds, providing important insight into factors that may dictate the outcome of an incompatible RBC transfusion.
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Sun JB. The prenatal intervention of pregnancy complicated with anti-Kell isoimmunization: a review. J Matern Fetal Neonatal Med 2019; 34:2893-2899. [PMID: 31571493 DOI: 10.1080/14767058.2019.1671330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Since the first case of the hemolytic disease of the fetus and newborn (HDFN) caused by anti-K was reported in 1946, the fetal diagnosis of K-HDFN has made rapid progress from invasive immunological and biochemical tests to noninvasive Doppler ultrasound and molecular biology techniques. However, its treatment, especially prenatal intervention, has developed slowly compared with RhD-HDFN. This review attempts to clarify the current key points and explore the direction of the next phase by systematically reviewing the development of diagnosis and treatment of this disease, which involving multidisciplinary participation.
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Affiliation(s)
- Jun-Bo Sun
- Department of Blood Transfusion, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, PR China
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8
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Slootweg YM, Lindenburg IT, Koelewijn JM, Van Kamp IL, Oepkes D, De Haas M. Predicting anti-Kell-mediated hemolytic disease of the fetus and newborn: diagnostic accuracy of laboratory management. Am J Obstet Gynecol 2018; 219:393.e1-393.e8. [PMID: 30063902 DOI: 10.1016/j.ajog.2018.07.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 06/21/2018] [Accepted: 07/24/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND There is controversy on critical cut-off values of laboratory testing to select pregnancies at increased risk for anti-Kell-mediated hemolytic disease of the fetus and newborn. Without early detection and treatment, anti-Kell-mediated hemolytic disease of the fetus and newborn may result in progressive fetal anemia, fetal hydrops, asphyxia, and perinatal death. OBJECTIVE We aimed to determine the value of repeated anti-Kell titer determination and biological activity measurement using the antibody-dependent cellular cytotoxicity test determination in the management of pregnancies at risk for anti-Kell-mediated hemolytic disease of the fetus and newborn. STUDY DESIGN This was a retrospective cohort study of pregnancies with anti-Kell and a Kell-positive fetus, identified from January 1999 through April 2015. Laboratory test results and clinical outcome were collected from the Dutch nationwide screening program and the national reference center for fetal therapy in The Netherlands, the Leiden University Medical Center. Diagnostic accuracy was measured (receiver operating characteristic curves, sensitivity, specificity, positive and negative predictive values) for anti-Kell titers and antibody-dependent cellular cytotoxicity test. The relationship between the titer and antibody-dependent cellular cytotoxicity measurements and the 2 foregoing measurements were computed with a Pearson product-moment correlation coefficient. RESULTS In a 16-year unselected cohort, representing screening results of 3.2 million pregnancies resulting in live births in The Netherlands, we identified 1026 Kell-immunized pregnancies. In all, 93 pregnant women had anti-Kell and a Kell-positive child, without other red cell alloantibodies. In all, 49 children (53%) needed intrauterine or postnatal transfusion therapy. The first anti-Kell titer showed already a high diagnostic accuracy with an area under the curve of 91%. The optimal cut-off point for the titer was 4 (sensitivity 100%; 95% confidence interval, 91-100), specificity 27% (95% confidence interval, 15-43), and positive predictive value 60% (49-71%). The antibody-dependent cellular cytotoxicity test was not informative to select high-risk pregnancies. Linear regression showed no significant change during pregnancy, when antibody titer and antibody-dependent cellular cytotoxicity test results were compared with every 2 foregoing measurements (P < .0001). CONCLUSION Early determination of the anti-Kell titer is sufficient to select pregnancies at increased risk for hemolytic disease of the fetus and newborn with need for transfusion therapy. If the Kell status of the fetus is known to be positive, a titer of ≥4 can be used to target intensive clinical monitoring.
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Affiliation(s)
- Yolentha M Slootweg
- Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands.
| | - Irene T Lindenburg
- Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Joke M Koelewijn
- Department of Immunohematology Diagnostics, Sanquin Diagnostic Services, Amsterdam, The Netherlands; Department of Clinical Transfusion Research, Sanquin Research, Amsterdam, The Netherlands
| | - Inge L Van Kamp
- Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Dick Oepkes
- Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Masja De Haas
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands; Department of Immunohematology Diagnostics, Sanquin Diagnostic Services, Amsterdam, The Netherlands; Department of Clinical Transfusion Research, Sanquin Research, Amsterdam, The Netherlands
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9
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10
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Deleers M, Guizani M, Jani J, Hulot M, El Kenz H. A case of severe foetal anaemia due to anti-Kell that could not be detected by the weekly assessment of middle cerebral artery peak systolic velocity. Transfus Apher Sci 2018; 57:111-113. [PMID: 29449170 DOI: 10.1016/j.transci.2018.01.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 01/09/2018] [Accepted: 01/15/2018] [Indexed: 10/18/2022]
Affiliation(s)
- Marie Deleers
- Department of Transfusion, CHU-Brugmann, LHUB-ULB, Brussels, Belgium.
| | - Meriem Guizani
- Department of Obstetrics and Gynaecology, CHU-Brugmann, Brussels, Belgium
| | - Jacques Jani
- Department of Obstetrics and Gynaecology, CHU-Brugmann, Brussels, Belgium
| | - Martine Hulot
- Department of Transfusion, CHU Saint-Pierre, LHUB-ULB, Brussels, Belgium
| | - Hanane El Kenz
- Department of Transfusion, CHU-Brugmann, LHUB-ULB, Brussels, Belgium
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11
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Al-Dughaishi T, Al-Rubkhi IS, Al-Duhli M, Al-Harrasi Y, Gowri V. Alloimmunization due to red cell antibodies in Rhesus positive Omani Pregnant Women: Maternal and Perinatal outcome. Asian J Transfus Sci 2015; 9:150-4. [PMID: 26420934 PMCID: PMC4562135 DOI: 10.4103/0973-6247.162710] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE This study is aimed to determine the prevalence of alloimmunization due to antibodies to red blood cell (RBC) antigens (other than rhesus [Rh] antigen) and report the maternal, perinatal, and neonatal outcomes. MATERIALS AND METHODS A retrospective review of medical records of all patients with minor RBCs antibodies alloimmunization who were followed and delivered at Sultan Qaboos University Hospital, Oman from June 2011 to June 2013. Maternal characteristics, antibody type, antibody titer in addition to perinatal and neonatal outcomes were reviewed. RESULTS There were 1160 patients with Rh positive status in the study. The most common ABO blood group was O, followed by A, B, and AB. We found 33 out of 1160 Rh positive women alloimmunized with minor RBCs antibodies that gave a prevalence of minor RBCs alloimmunization of 2.7%. The most frequent antibody was anti-E 38%, followed by anti-c 17% and anti-kell 17%. 6 of these 33 patients were identified to have significant antibody titer, and two cases showed evidence of fetal anemia. Only one case required an intrauterine blood transfusion. The most common neonatal complication was jaundice in 53%, followed by respiratory distress syndrome in 28%. Two cases complicated by neonatal anemia required a postnatal blood transfusion. CONCLUSION Alloimmunization with anti-E, anti-c, and anti-kell were the most common antibodies among the study group. Minor RBCs alloimmunization was an important cause of neonatal morbidity.
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Affiliation(s)
- Tamima Al-Dughaishi
- Department of Obstetrics and Gynecology, Sultan Qaboos University Hospital, Sultan Qaboos University, Muscat, Oman
| | - Ikhlass S Al-Rubkhi
- 5th Year Medical Student, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Maymoona Al-Duhli
- 5th Year Medical Student, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Yusra Al-Harrasi
- 5th Year Medical Student, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Vaidyanathan Gowri
- Department of Obstetrics and Gynecology, Sultan Qaboos University Hospital, Sultan Qaboos University, Muscat, Oman ; Department of Obstetrics and Gynecology, Sultan Qaboos University, Muscat, Oman
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12
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Osaro E, Ladan MA, Zama I, Ahmed Y, Mairo H. Distribution of Kell phenotype among pregnant women in Sokoto, North Western Nigeria. Pan Afr Med J 2015; 21:301. [PMID: 26587150 PMCID: PMC4634022 DOI: 10.11604/pamj.2015.21.301.4636] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 01/15/2015] [Indexed: 12/04/2022] Open
Abstract
Introduction Kell antigen is highly immunogenic and is the common cause of antibody production in mismatched blood transfusions, haemolytic transfusion reaction (HTR) and maternal alloimmunization, which causes severe anaemia in neonates. The aim of this study is to determine the prevalence and ethnic variation of the Kell phenotype among pregnant women in Sokoto, Nigeria. Methods Kell antigen status of 150 pregnant women aged 18-45 years and mean age 27.19 ±4.69 years attending antenatal clinic in UDUTH Sokoto Nigeria was determined using the conventional tube method and anti-Kell reagents (Lorne Laboratories, UK). Results Among the 150 subjects studied, 3 (2.0%) of subjects were positive and 147 (98.0) were negative for K antigen. Of the 150 pregnant subjects; 32 (21.3%) were primigravidae while 118 (78.7%) were multigravidae. Kell phenotype was more prevalent among primigravidae (3.1%) compared to multigravidae (1.7%) women. The distribution of Kell phenotype among the pregnant subjects was compared based on ethnicity. The prevalence of Kell antigen was significantly higher among the Hausa ethnic group (3.2%) compared to other ethnic groups which indicated zero prevalence (p = 0.001). Kell negative phenotype was ≥ 96.8% among all the ethnic groups. Conclusion Our observed prevalence of Kell phenotype is consistent with previous studies among Blacks and Asians but significantly lower than values observed in previous studies among Caucasians. We recommend that all pregnant women should be screened for the presence clinically significant red cell antigens including Kell antigen on their first antenatal visit. Kell negative red cell should be routinely provided for all pregnant women and women with child bearing potential to reduce the risk of Kell-associated HDFN. There is need to introduce routine screening of pregnant women for clinically significant red cell antibodies to facilitate the effective management of HDFN as well as prevent HTR. There is also need for sustained health education of pregnant women in the area to encourage early booking for antenatal care.
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Affiliation(s)
- Erhabor Osaro
- Department of Haematology and Transfusion Science, Faculty of Medical Laboratory Science, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Malami Aisha Ladan
- Department of Haematology and Transfusion Science, Faculty of Medical Laboratory Science, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Isaac Zama
- Department of Haematology and Transfusion Science, Faculty of Medical Laboratory Science, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Yakubu Ahmed
- Department of Obstetrics and Gynaecology Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Hassan Mairo
- Department of Obstetrics and Gynaecology Usmanu Danfodiyo University, Sokoto, Nigeria
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de Haas M, Thurik FF, Koelewijn JM, van der Schoot CE. Haemolytic disease of the fetus and newborn. Vox Sang 2015; 109:99-113. [PMID: 25899660 DOI: 10.1111/vox.12265] [Citation(s) in RCA: 148] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 01/11/2015] [Accepted: 02/02/2015] [Indexed: 12/12/2022]
Abstract
Haemolytic Disease of the Fetus and Newborn (HDFN) is caused by maternal alloimmunization against red blood cell antigens. In severe cases, HDFN may lead to fetal anaemia with a risk for fetal death and to severe forms of neonatal hyperbilirubinaemia with a risk for kernicterus. Most severe cases are caused by anti-D, despite the introduction of antental and postnatal anti-D immunoglobulin prophylaxis. In general, red blood cell antibody screening programmes are aimed to detect maternal alloimmunization early in pregnancy to facilitate the identification of high-risk cases to timely start antenatal and postnatal treatment. In this review, an overview of the clinical relevance of red cell alloantibodies in relation to occurrence of HDFN and recent views on prevention, screening and treatment options of HDFN are provided.
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Affiliation(s)
- M de Haas
- Department of Immunohaematology Diagnostics, Sanquin Diagnostic Services, Amsterdam, the Netherlands.,Department of Experimental Immunohaematology, Sanquin Research Amsterdam and Landsteiner laboratory, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | - F F Thurik
- Department of Experimental Immunohaematology, Sanquin Research Amsterdam and Landsteiner laboratory, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | - J M Koelewijn
- Department of Experimental Immunohaematology, Sanquin Research Amsterdam and Landsteiner laboratory, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands.,Department of General Practice, University Medical Centre, Groningen, the Netherlands
| | - C E van der Schoot
- Department of Experimental Immunohaematology, Sanquin Research Amsterdam and Landsteiner laboratory, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
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14
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O'Brien KL, Kim YA, Haspel RL, Uhl L. Provision of KEL1-negative blood to obstetric patients: a 3-year single-institution retrospective review. Transfusion 2014; 55:599-604; quiz 598. [PMID: 25118004 DOI: 10.1111/trf.12814] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 07/09/2014] [Accepted: 07/09/2014] [Indexed: 11/28/2022]
Abstract
BACKGROUND KEL1 alloimmunization is a major cause of hemolytic disease of the fetus and newborn (HDFN). While select countries have guidelines for preventing transfusion-associated KEL1 alloimmunization, the United States does not. Beth Israel Deaconess Medical Center instituted a policy in April 2009 whereby women not more than 50 years of age on the obstetric service were transfused KEL1-negative red blood cells (RBCs). We sought to determine compliance and impact for prevention of KEL1 alloimmunization and HDFN. STUDY DESIGN AND METHODS All women not more than 50 years of age without anti-K transfused RBCs during an obstetric admission from April 9, 2009, to April 9, 2012, were identified (227). Adherence to policy, factors contributing to nonadherence, and subsequent impact were evaluated. For comparison, all cases of anti-K detection in women not more than 50 years of age admitted to nonobstetric services and all cases of transfusion-associated KEL1 alloimmunization in women not more than 50 years of age during the 10 years prior were identified. RESULTS Eighty-four percent received only KEL1-negative units. Three (1.3%) women not more than 50 years of age on the obstetric service were identified with anti-K, while 17 (1.5%) women not more than 50 years of age on nonobstetric services had anti-K detected; only five of 20 had a prior RBC transfusion. In the 10 years prior, there were 27 cases of transfusion-associated KEL1 alloimmunization in women not more than 50 years of age. There were no cases of KEL1 HDFN in either period. CONCLUSION Although the findings demonstrate feasibility of providing KEL1-negative RBCs to women of childbearing potential, evidence for clinical benefit is lacking. The low prevalence of KEL1 in blood donors, the lack of significant differences in alloimmunization rates, and no cases of HDFN during the study period questions the clinical benefit of such a policy.
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Affiliation(s)
- Kerry L O'Brien
- Department of Pathology, Beth Israel Deaconess Medical Center, Boston, Massachusetts; Department of Pathology, Harvard Medical School, Boston, Massachusetts
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15
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Wong KS, Connan K, Rowlands S, Kornman LH, Savoia HF. Antenatal immunoglobulin for fetal red blood cell alloimmunization. Cochrane Database Syst Rev 2013; 2013:CD008267. [PMID: 23728672 PMCID: PMC11285300 DOI: 10.1002/14651858.cd008267.pub2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Red blood cell alloimmunization in pregnancy can lead to fetal anaemia with potentially disastrous consequences. Traditional management involves the use of intrauterine transfusion, which is associated with significant procedure-related risks. An alternative treatment that has been trialled is the use of immunoglobulin administered intravenously to the mother. OBJECTIVES The objective of this review was to assess the efficacy and safety of the use of intravenous immunoglobulin antenatally to women with severe fetal red blood cell alloimmunization. SEARCH METHODS We searched the Cochrane Pregnancy and Childbirth Group trials register (19 December 2012), and reference lists of articles. SELECTION CRITERIA Randomized trials assessing the antenatal use of intravenous immunoglobulin administered at any dose, frequency or duration with a control group (using any other, or no treatment) in the management of fetal red blood cell alloimmunization. DATA COLLECTION AND ANALYSIS Two review authors independently assessed the available evidence. MAIN RESULTS There are no included studies. AUTHORS' CONCLUSIONS No information is available from randomized trials to indicate whether the antenatal use of intravenous immunoglobulin is effective in the management of fetal red blood cell alloimmunization. Several case series suggest a beneficial role in delaying the onset of fetal anaemia requiring invasive intrauterine transfusion.
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Affiliation(s)
- Kae Sheen Wong
- Department of Obstetrics and Gynaecology, The Royal Women’s Hospital, Parkville, Australia.
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Pate LL, Myers JC, Palma JP, Viele M, Galel SA, Ferrer Z, Gonzalez CL, Benitz WE, Garratty G, Fontaine MJ. Anti-Ge3 causes late-onset hemolytic disease of the newborn: the fourth case in three Hispanic families. Transfusion 2012; 53:2152-7. [PMID: 23241141 DOI: 10.1111/trf.12027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Revised: 10/26/2012] [Accepted: 10/30/2012] [Indexed: 11/30/2022]
Abstract
BACKGROUND The Gerbich (Ge) blood group system consists of 11 antigens carried on red blood cell (RBC) membrane glycophorins C and D; of these, Ge:3 antigen is of high prevalence, and the anti-Ge3 is found to be clinically significant. CASE REPORT A 34-week neonate born to a Hispanic mother with anti-Ge3 developed late-onset hemolysis with hyperbilirubinemia and was successfully treated with transfusions from her mother. Relevant clinical findings and laboratory results for this case are summarized and compared to three other previously reported cases; all babies were born from a mother of Hispanic ethnicity. CONCLUSION Hemolytic disease of the fetus and new born associated with anti-Ge3 is rare but should be considered when working up a broadly reactive RBC antibody screen in women of Hispanic ethnicity. Early identification of pregnant women with anti-Ge3 is recommended for prenatal transfusion planning and close monitoring of the newborn infant for evidence of late-onset anemia.
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Affiliation(s)
- Lisa Lee Pate
- Department of Pathology, Stanford University Medical Center, and the Division of Neonatal and Developmental Medicine, Lucile Packard Children's Hospital, Stanford University, Stanford, California; American Red Cross Blood Services (Southern California Region), Pomona, California
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Rekik T, Ben Amor I, Louati N, Rekik H, Menif H, Gargouri J. Recherche des agglutinines irrégulières en milieu obstétrical en Tunisie : étude à propos de 5369femmes. Transfus Clin Biol 2012; 19:64-73. [DOI: 10.1016/j.tracli.2012.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2011] [Accepted: 01/24/2012] [Indexed: 10/28/2022]
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Akdağ A, Erdeve O, Uraş N, Simşek Y, Dilmen U. Hydrops Fetalis due to Kell Alloimmunization: A Perinatal Approach to a Rare Case. Turk J Haematol 2012; 29:72-5. [PMID: 24744627 PMCID: PMC3986772 DOI: 10.5505/tjh.2012.37801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2010] [Accepted: 06/29/2011] [Indexed: 11/11/2022] Open
Abstract
Objective: While routine administration of rhesus (Rh) immunoglobulin has significantly reduced the incidence of Rh alloimmunization, maternal alloimmunization to other red cell antigens remains a contributor to perinatal morbidity and mortality. Although the Kell antigen is seen on the red cells of only 9% of the general population, attention to Kell antibodies continues to increase. Case Report: A case of fetal hydrops was sonographically detected at 30 weeks of gestation. Antenatal tests to evaluate the fetus’s condition clearly showed that the level of hemolytic disease was critical and the baby was delivered prematurely due to fetal distress. The combination of anemia, reticulocytopenia, hydrops fetalis, and a positive indirect Coombs test suggested Kell isoimmunization. The baby was successfully treated with exchange transfusion of Kellnegative packed red cells, and was discharged on postnatal d 30. Conclusion: The presented case of hydrops fetalis was due Kell alloimmunization that was detected during the postnatal period, and thus we plan to discuss the perinatal approach to Kell immunization.
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Affiliation(s)
- Arzu Akdağ
- Zekai Tahir Burak Maternity and Teaching Hospital, Ankara, Turkey
| | - Omer Erdeve
- Zekai Tahir Burak Maternity and Teaching Hospital, Ankara, Turkey
| | - Nurdan Uraş
- Zekai Tahir Burak Maternity and Teaching Hospital, Ankara, Turkey
| | - Yavuz Simşek
- Zekai Tahir Burak Maternity and Teaching Hospital, Ankara, Turkey
| | - Uğur Dilmen
- Zekai Tahir Burak Maternity and Teaching Hospital, Ankara, Turkey
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Scheffer PG, van der Schoot CE, Page-Christiaens GCML, de Haas M. Noninvasive fetal blood group genotyping of rhesus D, c, E and of K in alloimmunised pregnant women: evaluation of a 7-year clinical experience. BJOG 2011; 118:1340-8. [DOI: 10.1111/j.1471-0528.2011.03028.x] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
Although hemagglutination serves the immunohematology reference laboratory well, when used alone, it has limited capability to resolve complex problems. This overview discusses how molecular approaches can be used in the immunohematology reference laboratory. In order to apply molecular approaches to immunohematology, knowledge of genes, DNA-based methods, and the molecular bases of blood groups are required. When applied correctly, DNA-based methods can predict blood groups to resolve ABO/Rh discrepancies, identify variant alleles, and screen donors for antigen-negative units. DNA-based testing in immunohematology is a valuable tool used to resolve blood group incompatibilities and to support patients in their transfusion needs.
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Affiliation(s)
- Marion E Reid
- New York Blood Center, 310 East 67th Street, New York, NY 10065, Telephone: 212-570-3294 / Fax: 212-737-4935,
| | - Gregory A Denomme
- Blood Center of Wisconsin, 638 18 Street, Milwaukee, WI, 53201-2178, Telephone: 414-937-6440 / Fax: 414-937-6404,
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Kontopoulos EV, Quintero RA. Assessment of the peak systolic velocity of the middle cerebral artery in twin-twin transfusion syndrome. Part I: preoperative assessment. Am J Obstet Gynecol 2009; 200:61.e1-5. [PMID: 19121658 DOI: 10.1016/j.ajog.2008.10.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2008] [Revised: 07/29/2008] [Accepted: 10/07/2008] [Indexed: 11/16/2022]
Abstract
OBJECTIVE We sought to assess the incidence of an elevated peak systolic velocity of the middle cerebral artery (MCA-PSV) in twin-twin transfusion syndrome prior to laser surgery and its prognostic value for intrauterine fetal demise 24 hours after surgery (IUFD-24). STUDY DESIGN An elevated MCA-PSV was defined as a velocity > .5 multiples of the median by transabdominal pulsed Doppler. Gestational age, Quintero stage, and number and/or type of placental vascular anastomoses were assessed as risk factors for an elevated MCA-PSV. Risk of IUFD-24 was assessed relative to an elevated MCA-PSV. RESULTS An elevated MCA-PSV was present in 4.2% of donors, 3.2% of recipients (P = .5), and 1.5% of both twins in 189 patients with twin-twin transfusion syndrome. An elevated MCA-PSV was unrelated to gestational age, stage, and number or type of anastomoses. An elevated MCA-PSV in the recipient twin was associated with an increased risk of IUFD-24 of this fetus (P = .01). CONCLUSIONS An elevated MCA-PSV is present in < 5% of donor and recipient twins. An elevated MCA-PSV is a risk factor for IUFD-24 of the recipient twin.
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Affiliation(s)
- Eftichia V Kontopoulos
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of South Florida, Tampa, FL, USA
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Abstract
Although anti-RhD was once the major etiology of hemolytic disease of the fetus/newborn (HDFN), the widespread adoption of antenatal and postpartum Rhesus immune globulin has resulted in a marked decrease in the prevalence of alloimmunization to the RhD antigen in pregnancy. Maternal alloimmunization to other red cell antigens continues to play a role as the cause of fetal disease since no prophylactic immune globulins are available to prevent the formation of these antibodies. An increasing incidence of the Kell (anti-K1) antibody has been noted in the United States. Guidelines for intervention in cases of irregular red cell antibodies are limited by the bias of anecdotal reports in the literature in favor of severe cases of HFDN. Although most diagnostic protocols used in the management of the RhD-alloimmunized pregnancy can be applied in cases of non-RhD sensitization, Kell (K1 and K2) alloimmunization should be managed more conservatively.
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