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Red cell alloantibody

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https://www.readbyqxmd.com/read/28540859/case-report-serological-testing-interference-of-daratumumab-anti-cd38-therapy-in-multiple-myeloma
#1
Élodie Rabut, Annabelle Castro-Fernandez, Virginie Le Gall, Nihad Meknache
We report the case of a 54 years old patient monitored for a monoclonal IgG kappa light chain refractory relapsed multiple myeloma and receiving daratumumab immunotherapy. Daratumumab (DARA), a monoclonal anti-CD38 antibody, belongs to the new generation of immunotherapy in refractory relapse multiple myeloma which the medical pathologist should be aware of to avoid misinterpretation of biological tests performed for patients followed for this disease. By its IgG1K humanized monoclonal antibody backbone, DARA interferes in both serum protein electrophoresis and immunofixation by the presence of an alternate IgGK monoclonal peak, leading to a possible difficulty to assess treatment's response in monoclonal IgG kappa light chain myeloma...
June 1, 2017: Annales de Biologie Clinique
https://www.readbyqxmd.com/read/28535394/red-blood-cell-alloimmunization-in-184-patients-with-myeloid-neoplasms-treated-with-azacitidine-a-retrospective-single-center-experience
#2
M Leisch, L Weiss, N Lindlbauer, C Jungbauer, A Egle, E Rohde, R Greil, C Grabmer, L Pleyer
Alloimmunization to Red Blood Cell (RBC) antigens frequently occurs in patients with myeloid neoplasms (AML, MDS and CMML) and potentially poses the patient at risk for delayed hemolytic transfusion reactions and limited supply of compatible RBC-units. However, there is comparatively little data on transfusion associated characteristics in this patient cohort. We therefore retrospectively analyzed transfusion requirements and clinical outcomes of 184 patients with myloid neoplasms treated with azacitidine at the Paracelsus Medical University Salzburg, which were included in the Austrian Registry of Hypomethylating Agents...
May 9, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28511387/erythrocyte-alloimmunization-and-autoimmunization-among-blood-donors-and-recipients-visiting-a-tertiary-care-hospital
#3
Daljit Kaur, Lovenish Bains, Manoj Kandwal, Indu Parmar
INTRODUCTION: The ultimate aim of pretransfusion testing is the acceptable survival of donor red cells in recipient's body and antibody detection plays a critical role in achieving the same. The cornerstone of antibody detection method is detecting an unexpected antibody as against the expected antibodies of ABO blood group system. Autoantibodies can also interfere with the detection of clinically significant alloantibodies. AIM: To study the frequency of alloantibodies and autoantibodies in the healthy blood donors and patient population visiting our hospital...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28507611/the-impact-of-extended-typing-on-red-blood-cell-alloimmunization-in-transfused-patients
#4
Tatjana Makarovska-Bojadzieva, Emilija Velkova, Milenka Blagoevska
BACKGROUND: Red blood cell (RBC) alloimmunization is still an actual problem in our transfusion practice. In 2011, in addition to the regular ABO/D blood group typing, phenotyping for Rh (C, c, E, e) and Kell antigens was introduced for blood donors and patients undergoing blood transfusion. Our aim was to evaluate the impact of the extended RBC typing and donor/recipient matching on the incidence of RBC alloimmunization. METHODS: A retrospective comparative study was conducted by reviewing RBC request records for about 36,000 patients transfused with RBC in the period from 2013 to 2015 in comparison to the similar study conducted on 47,000 transfused patients in the period from 2005 to 2008...
April 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28425750/modeling-alloantibody-formation-to-high-incidence-red-blood-cell-antigens-in-immune-responders-using-genotypic-data
#5
Patricia A R Brunker, Keerthana Ravindran, R S Shirey
Alloimmunization to red blood cell antigens is unpredictable and poorly understood. Patients who are negative for high-incidence antigens (HIAs) are at risk for developing the corresponding antibodies. Molecular methods can easily predict the lack of an antigen and thus, the risk of an individual to become immunized. We examined the prevalence and risk factors for HIA alloimmunization in patients at risk based on genotyping results. Genotyping using a molecular method (HEA BeadChip™, Immucor, Warren, NJ) was performed on all patient specimens referred for molecular testing over 45 months; serologic and clinical data were analyzed...
January 2017: Immunohematology
https://www.readbyqxmd.com/read/28424235/increased-alloimmunisation-and-transfusion-reaction-reporting-in-patients-with-solid-phase-panreactivity
#6
Andrea M Olofson, Rachael M Chandler, Cynthia R Marx-Wood, Craig A Babcock, Nancy M Dunbar
BACKGROUND: Automated solid-phase antibody screening uses red blood cell (RBC) membranes immobilised on polystyrene test wells to detect RBC specific antibodies. Despite its time-saving and labour-saving benefits, this method produces a higher rate of nonspecific reactivity compared with manual screening. Solid-phase panreactivity (SPP) is characterised by panreactivity (ie, all test cells reacting) in solid-phase testing accompanied by a negative autocontrol and a lack of reactivity when the same screening cells are tested in tube...
April 19, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28413208/anti-m-induced-severe-haemolytic-disease-of-foetus-and-newborn-in-a-malay-woman-with-recurrent-pregnancy-loss
#7
H Mohd Nazri, M N Noor Haslina, M Y Shafini, A R Noor Shaidatul Akmal, M Rapiaah, A Wan Zaidah
Haemolytic disease of the foetus and newborn (HDFN) is caused by maternal red blood cells (RBC) alloimmunisation resulted from incompatibility of maternal and foetal RBCs. However, only a few HDFN attributed to anti-M were reported, varying from asymptomatic to severe anaemia with hydrops foetalis and even intrauterine death. A case of severe HDFN due to anti-M alloantibody from an alloimmunized grandmultiparous Malay woman with recurrent pregnancy loss is reported here. The newborn was delivered with severe and prolonged anaemia which required frequent RBC transfusions, intensive phototherapy and intravenous immunoglobulin administration...
April 2017: Malaysian Journal of Pathology
https://www.readbyqxmd.com/read/28369969/a-rare-potentially-life-threatening-presentation-of-passenger-lymphocyte-syndrome
#8
Thomas J Gniadek, Andrea M McGonigle, R Sue Shirey, Patricia A Brunker, Michael Streiff, Benjamin Philosophe, Evan M Bloch, Paul M Ness, Karen E King
BACKGROUND: Passenger lymphocyte syndrome occurs when donor lymphocytes are transplanted with a solid organ and produce alloantibodies that react with antigens on the recipient's red blood cells (RBCs). Typically, passenger lymphocyte syndrome presents as immunoglobulin G antibody-mediated, extravascular hemolytic anemia with reticulocytosis. Often, the donor was alloimmunized before transplantation. CASE REPORT: A 34-year-old Group O, D+ man with a negative antibody screen received a liver transplant from a Group O, D- donor...
May 2017: Transfusion
https://www.readbyqxmd.com/read/28340248/irradiation-of-red-blood-cells-and-alloimmunization
#9
Christopher A Tormey, Jeanne E Hendrickson
Background: Animal models suggest that red blood cell (RBC) damage incurred during storage can increase immunogenicity to some RBC antigens. We hypothesized that RBC irradiation, a source of oxidative damage, may result in higher RBC alloimmunization rates among transfusion recipients. Methods: Individuals receiving 1 or more gamma-irradiated RBC units, with follow-up antibody screening, were studied. We recorded diagnosis at the time of first irradiated RBC-unit transfusion, total irradiated RBCs received, and alloantibodies detected before and after irradiated RBC transfusion...
May 1, 2017: Laboratory Medicine
https://www.readbyqxmd.com/read/28337751/a-novel-network-analysis-tool-to-identify-relationships-between-disease-states-and-risks-for-red-blood-cell-alloimmunization
#10
R Celli, W Schulz, J E Hendrickson, C A Tormey
We hypothesized that diagnoses may be associated with alloantibody 'responder' status and examined associations between disease states and alloimmunization. Patients with ≥1 alloantibody and non-alloimmunized controls were analysed. Pearson's coefficients were calculated to determine associations between alloimmunization and diseases; significant correlations were selected to construct a network. Inflammatory disorders and diseases requiring chronic transfusion support were associated with responder status...
March 23, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28316442/alloimmunization-in-autoimmune-hemolytic-anemia-patient-the-differential-adsorption-approach
#11
Ravi C Dara, Aseem Kumar Tiwari, Dinesh Arora, Subhasis Mitra, Devi Prasad Acharya, Geet Aggarwal, Jyoti Sharma
Patients of β-thalassemia major are dependent on regular blood transfusions for their entire lifetime. Development of antibodies against red blood cell (RBC) antigen which may be alloantibody or autoantibody, several times as a result of frequent red cell component transfusions, further complicates the subsequent transfusion therapy. Among the autoantibodies, warm-reactive autoantibodies are commoner and interfere in the pretransfusion testing. These RBC autoantibodies present in patient's serum potentially react with all the cells of antibody identification panel giving "pan-reactive" picture and making alloantibody identification complex...
January 2017: Asian Journal of Transfusion Science
https://www.readbyqxmd.com/read/28316439/first-indian-study-to-establish-safety-of-immediate-spin-crossmatch-for-red-blood-cell-transfusion-in-antibody-screen-negative-recipients
#12
Aseem Kumar Tiwari, Geet Aggarwal, Ravi C Dara, Dinesh Arora, Gautam Kumar Gupta, Vimarsh Raina
BACKGROUND AND OBJECTIVES: The US Food and Drug Administration and American Association of Blood Banks approved the type and screen approach in 1980s, long after antibody screen (AS) was introduced in 1950s. The present study omits conventional anti-human globulin (AHG) crossmatch and replaces it with immediate-spin (IS) crossmatch as part of pretransfusion testing in AS-negative patients to study the safety and effectiveness of IS crossmatch in recipients. MATERIALS AND METHODS: This prospective longitudinal study was conducted on over 5000 red cell units transfused to AS-negative patients admitted to the hospital...
January 2017: Asian Journal of Transfusion Science
https://www.readbyqxmd.com/read/28294343/patient-factors-associated-with-unidentified-reactivity-in-solid-phase-and-polyethylene-glycol-antibody-detection-methods
#13
Nichole M Miller, Susan T Johnson, Erica Carpenter, Christine A Naczek, Matthew S Karafin
BACKGROUND: Several publications have reported an increase in nonspecific reactions when automated technologies such as solid phase are used for the detection of red blood cell alloantibodies. However, there is little known about patient-specific factors associated with these reactions and the clinical importance of these nonspecific reactions. STUDY DESIGN AND METHODS: We performed a 6-year retrospective review of our blood bank records and all newly reported unidentified (UID) reactivity using a test tube polyethylene glycol (t-PEG) and solid-phase method for the detection and identification of alloantibodies was recorded...
May 2017: Transfusion
https://www.readbyqxmd.com/read/28275334/clinical-significance-of-an-alloantibody-against-the-kell-blood-group-glycoprotein
#14
Stella Maris Mattaloni, Carine Arnoni, Rosario Céspedes, Claudia Nonaka, Carolina Trucco Boggione, Melina Eliana Luján Brajovich, Andrea Trejo, Néstor Zani, Claudia Silvia Biondi, Lilian Castilho, Carlos Miquel Cotorruelo
BACKGROUND: Kell null (K0) individuals can produce anti-Ku, an antibody against many epitopes in the Kell glycoprotein, after transfusion and/or pregnancy. Since sensitized K0 patients are rare, little is known about anti-Ku clinical relevance and in particular about its association to hemolytic disease of the fetus and newborn. CASE REPORT: This work describes a case of neonatal hyperbilirubinemia due to immune-mediated erythrocyte destruction by an alloantibody directed against the Kell glycoprotein...
January 2017: Transfusion Medicine and Hemotherapy
https://www.readbyqxmd.com/read/28261322/immune-regulation-of-sickle-cell-alloimmunization
#15
Karina Yazdanbakhsh, Beth H Shaz, Christopher D Hillyer
Red blood cell (RBC) transfusion remains an important treatment for patients with sickle cell disease (SCD) and the majority of patients receive transfusions by adulthood. However, SCD patients are at a high risk of alloimmunization, which can cause life-threatening complications. The high rate of alloimmunization can in part be explained by chronic inflammatory condition in SCD characterized by significant immune and inflammatory activation. Heightened immune effector cell responses and/or impaired regulatory networks are likely to drive alloantibody production in alloimmunized SCD patients...
February 2017: ISBT Science Series
https://www.readbyqxmd.com/read/28250159/antigen-density-dictates-immune-responsiveness-following-red-blood-cell-transfusion
#16
Connie M Arthur, Seema R Patel, Nicole H Smith, Ashley Bennett, Nourine A Kamili, Amanda Mener, Christian Gerner-Smidt, Harold C Sullivan, J Scott Hale, Andreas Wieland, Benjamin Youngblood, James C Zimring, Jeanne E Hendrickson, Sean R Stowell
Although RBC transfusion can result in the development of anti-RBC alloantibodies that increase the probability of life-threatening hemolytic transfusion reactions, not all patients generate anti-RBC alloantibodies. However, the factors that regulate immune responsiveness to RBC transfusion remain incompletely understood. One variable that may influence alloantibody formation is RBC alloantigen density. RBC alloantigens exist at different densities on the RBC surface and likewise exhibit distinct propensities to induce RBC alloantibody formation...
April 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28185828/the-role-of-molecular-typing-and-perfect-match-transfusion-in-sickle-cell-disease-and-thalassaemia-an-innovative-transfusion-strategy
#17
Rossana Putzulu, Nicola Piccirillo, Nicoletta Orlando, Giuseppina Massini, Maddalena Maresca, Fernando Scavone, Bianca Maria Ricerca, Gina Zini
Chronic red blood cell transfusions remain an essential part of supportive treatment in patients with thalassaemia and sickle cell disease (SCD). Red blood cell (RBC) transfusions expose patients to the risk of developing antibodies: RBC alloimmunization occurs when the immune system meets foreign antigens. We created a register of extensively genotyped donors to achieve a better matched transfusion in order to reduce transfusion alloimmunization. Extended RBC antigen typing was determined and confirmed by molecular biology techniques using Human Erythrocyte Antigen (HEA) BeadChip (BioArray Solutions Ltd...
January 23, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28129096/characterization-of-anti-dal-alloantibodies-following-sensitization-of-two-dal-negative-dogs
#18
S Goulet, M C Blais
Since its discovery, the immunogenicity of the Dal blood type has not been further investigated. The aim of this study was to better characterize anti- Dal alloantibodies produced following sensitization of Dal-negative dogs, notably their rate of appearance, the agglutination titer over time, and their immunoglobulin class. A secondary objective was to obtain polyclonal anti- Dal alloantibodies to increase the availability of Dal blood typing. Of 100 healthy laboratory Beagles tested, 2 Dal-negative dogs were identified as recipients...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28097704/prophylactic-rhce-and-kell-antigen-matching-impact-on-alloimmunization-in-transfusion-dependent-patients-with-myelodysplastic-syndromes
#19
Y Lin, A Saskin, R A Wells, M Lenis, A Mamedov, J Callum, R Buckstein
BACKGROUND AND OBJECTIVES: Thirty to 80 per cent of patients with myelodysplastic syndromes (MDS) become transfusion-dependent and are at risk for red blood cell (RBC) alloimmunization. This study compared alloimmunization rates in transfusion-dependent patients with MDS at an institution with a policy of prophylactic antigen matching for RhCE and K (PAM) with those transfused at institutions without such a policy (non-PAM). MATERIALS AND METHODS: Transfusion records were retrospectively reviewed to determine total number of RBC transfusions received, whether RBC phenotyping was performed, the type and date of first alloantibody development and receipt of prophylactic antigen matching for RhCE and K...
January 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28097699/maternal-red-blood-cell-alloantibodies-identified-in-blood-samples-obtained-from-iranian-pregnant-women-the-first-population-study-in-iran
#20
Ehsan Shahverdi, Mostafa Moghaddam, Fateme Gorzin
BACKGROUND: The objective was to determine the frequency of occurrence of alloantibodies among pregnant women in Iran. STUDY DESIGN AND METHODS: This was a prospective cross-sectional study, which was carried out in the immunohematology reference laboratory of the Iranian Blood Transfusion Organization in Tehran, Iran, in 2008 to 2015. Screening and identification of red blood cell (RBC) alloantibodies was done on the sera of 7340 pregnant females using the standard tube method and gel column agglutination technique...
January 2017: Transfusion
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