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García-Morin M, Bardón-Cancho EJ, Beléndez C, Dulín E, Blanco-Soto P, Puertas-López C, Prieto-Medina M, Cervera-Bravo Á, Llorente-Otones L, Pérez-Alonso V, San-Román S, Vecilla-Rivelles C, López-Rubio M, Sebastián E, Bellón JM, Cela E. Madrid Newborn Sickle Cell Disease Cohort: clinical outcomes, stroke prevention and survival. Ann Hematol 2024; 103:373-383. [PMID: 37980280 DOI: 10.1007/s00277-023-05539-1] [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] [Received: 08/22/2023] [Accepted: 11/03/2023] [Indexed: 11/20/2023]
Abstract
In May 2003, Madrid established the universal newborn screening (NBS) for sickle cell disease (SCD). However, there are no studies resembling the evolution of a SCD neonate cohort followed according to national guidelines in Spain. The aim of this study is to describe the morbimortality and the stroke prevention programme in patients diagnosed by SCD NBS in Madrid. This is a multicentre, observational, prospective cohort study between 2003 and 2018; 187 patients diagnosed with SCD were included (151 HbSS, 6 HbSβ0, 27 HbSC, 3 HbSβ +), and median follow-up was 5.2 years (0.03-14.9). There were 5 deaths: 2 related to SCD in patients with severe genotype (HbSS/HbSβ0). Overall survival reached 95% and SCD-related survival 96.8%. The most frequent events were fever without focus, vaso-occlusive crises and acute chest syndromes. Eight strokes occurred in 5 patients which led to a 90.7% stroke-free survival in severe genotype patients (first stroke rate, 0.54 per 100 patient-years). Transcranial Doppler (TCD) was performed in 95% of eligible patients; 75% of children with pathological TCD remained stroke-free. Regarding HbSS/HbSβ0 patients, 50.1% received hydroxyurea and 9.5% haematopoietic stem cell transplantation. This study reflects the evolution of Madrid SCD cohort and provides morbimortality data similar to other developed countries.
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Affiliation(s)
- Marina García-Morin
- Pediatric Oncology/Hematology/BMT Unit, Pediatric Department, Facultad de Medicina, Hospital General Universitario Gregorio Marañón, Universidad Complutense de Madrid, C/ Maiquez, 9, 28007, Madrid, Spain
- Instituto Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - Eduardo J Bardón-Cancho
- Pediatric Oncology/Hematology/BMT Unit, Pediatric Department, Facultad de Medicina, Hospital General Universitario Gregorio Marañón, Universidad Complutense de Madrid, C/ Maiquez, 9, 28007, Madrid, Spain.
- Instituto Investigación Sanitaria Gregorio Marañón, Madrid, Spain.
| | - Cristina Beléndez
- Pediatric Oncology/Hematology/BMT Unit, Pediatric Department, Facultad de Medicina, Hospital General Universitario Gregorio Marañón, Universidad Complutense de Madrid, C/ Maiquez, 9, 28007, Madrid, Spain
- Instituto Investigación Sanitaria Gregorio Marañón, Madrid, Spain
- Instituto Nacional de Investigación Biomédica en Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
| | - Elena Dulín
- Newborn Screening Laboratory, Hospital General Universitario Gregorio Marañón, C/Maiquez, 9, 28007, Madrid, Spain
| | - Paula Blanco-Soto
- Newborn Screening Laboratory, Hospital General Universitario Gregorio Marañón, C/Maiquez, 9, 28007, Madrid, Spain
| | - Carolina Puertas-López
- Newborn Screening Laboratory, Hospital General Universitario Gregorio Marañón, C/Maiquez, 9, 28007, Madrid, Spain
| | - Mar Prieto-Medina
- Nursery, Sickle Cell Disease Newborn Screening, Pediatric Department, Pediatric Oncology/Hematology/BMT Unit, Madrid, Spain
| | - Áurea Cervera-Bravo
- Hematology Unit, Pediatric Department, Hospital Universitario de Móstoles, Móstoles, Madrid, Spain
| | - Lucía Llorente-Otones
- Hematology Unit, Pediatric Department, Hospital Universitario de Fuenlabrada, Fuenlabrada, Madrid, Spain
| | - Vanesa Pérez-Alonso
- Pediatric Oncology and Hematology Unit, Pediatric Department, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Sonsoles San-Román
- Pediatric Oncology and Hematology Department, Hospital Universitario La Paz, Madrid, Spain
| | - Cruz Vecilla-Rivelles
- Hematology Unit, Pediatric Department, Hospital Universitario Príncipe de Asturias, Alcalá de Henares, Madrid, Spain
| | - Montserrat López-Rubio
- Hematology Department, Hospital Universitario Príncipe de Asturias, Alcalá de Henares, Madrid, Spain
| | - Elena Sebastián
- Pediatric Oncology and Hematology Department, Hospital Infantil Niño Jesús, Madrid, Spain
| | - José M Bellón
- Instituto Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - Elena Cela
- Pediatric Oncology/Hematology/BMT Unit, Pediatric Department, Facultad de Medicina, Hospital General Universitario Gregorio Marañón, Universidad Complutense de Madrid, C/ Maiquez, 9, 28007, Madrid, Spain
- Instituto Investigación Sanitaria Gregorio Marañón, Madrid, Spain
- Instituto Nacional de Investigación Biomédica en Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
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Almorish MAW, Al-Absi B, Elkhalifa AME, Alhamidi AH, Abdelrahman M. Red blood cell alloimmunization in blood transfusion-dependent β thalassemia major patients in Sana'a City-Yemen. Sci Rep 2024; 14:1005. [PMID: 38200206 PMCID: PMC10782003 DOI: 10.1038/s41598-024-51561-2] [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] [Received: 08/03/2023] [Accepted: 01/06/2024] [Indexed: 01/12/2024] Open
Abstract
The development of erythrocyte alloantibodies complicates transfusion therapy in β thalassemia major patients. These antibodies increase the need for blood and intensify transfusion complications. Data on erythrocyte alloimmunization is scarce in Yemeni thalassemia patients. We studied the frequency of alloimmunization in multitransfused β-thalassemia major patients and investigated risk factors that affect antibody formation. Blood samples were taken from 100 β thalassemia major patients who received multitransfused leukodepleted packed red-blood cells. Antibody screening and identification were performed by indirect antiglobulin test using the gel column technique. All patients were tested for autoantibodies using autocontrol and direct antiglobulin test. No adsorption test was done as no autoantibodies were detected in any patient. In our study of 100 β-thalassemia patients, 50 were male and 50 were female with ages ranging from 1 to 30 years. Alloantibodies were present in 6% of patients, while no autoantibodies were detected. Of the 17 alloantibodies identified, the majority were directed against Kell (41.2%) and Rh (29.4%) blood groups. Alloimmunization was significantly associated with age group and sex (p = 0.013, p = 0.030), respectively in β thalassemia major patients. The development of alloantibodies was not significantly associated with duration, total number of transfusions and splenectomy (P = 0.445, P = 0.125, P = 0.647). No autoantibodies found in patients with β thalassemia major. The study found low rates of erythrocyte alloimmunization in multitransfused β-thalassemia major patients, but significant alloantibodies were produced primarily from Kell and Rh blood groups, suggesting the need for providing phenotypically matched cells for selective antigens to improve transfusion efficiency.
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Affiliation(s)
- Mohammed A W Almorish
- Hematology Department, Faculty of Medicine and Health Sciences, Sana'a University, Sana'a, Yemen.
| | - Boshra Al-Absi
- Hematology Department, Faculty of Medicine and Health Sciences, Sana'a University, Sana'a, Yemen
| | - Ahmed M E Elkhalifa
- College of Health Sciences, Saudi Electronic University, Riyadh, Saudi Arabia
| | - Abdulaziz H Alhamidi
- Clinical Laboratory Sciences Department, College of Applied Medical Science, King Saud University, Riyadh, Saudi Arabia
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Hajjaj OI, Cserti-Gazdewich C, Dumevska L, Hanna M, Lau W, Lieberman L. Reconsidering sickle cell trait testing of red blood cell units allocated to children with sickle cell disease. Transfusion 2023; 63:507-514. [PMID: 36519666 DOI: 10.1111/trf.17223] [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] [Received: 06/28/2022] [Revised: 09/26/2022] [Accepted: 11/12/2022] [Indexed: 12/23/2022]
Abstract
BACKGROUND Sickle cell trait (SCT) testing of red blood cell (RBC) units is sometimes performed to identify and divert units containing hemoglobin S (HbS). Recipients strategically guarded against this exposure include fetuses, neonates, and children with sickle cell disease (SCD). The clinical necessity of this practice is unclear. STUDY DESIGN AND METHODS A one-year audit (2018) was performed at a pediatric tertiary care hospital that tests for SCT in RBC units prescribed to children with SCD and neonates. The impact of incorporating varying numbers of SCT RBC units in a single-unit top-up, partial-manual red cell exchange, and automated erythrocytapheresis was modeled in four typical-parameter age scenarios (2, 5, 10, and 18 years) sharing a high baseline HbS. Additionally, a survey assessing SCT testing practices was administered to Canadian pediatric hospital transfusion laboratories serving hemoglobinopathy programs. RESULTS Of 2268 donor RBC units tested, one was positive for SCT (0.04% [95% CI: 0.01%-0.24%]), at a cost of $19,384.56 CAD. The impact of SCT unit incorporation on lost HbS reduction was modest (Δ1%-3% [automated erythrocytapheresis] and Δ4%-15% [top-up/partial manual exchange]). The survey (with all 13 sites responding) showed variable SCT testing practice; four (31%) do not test, four (31%) test for children with SCD, and six (46%) test for neonates. CONCLUSION RBC SCT testing may be more costly than beneficial or necessary in children with SCD. As of 2019, our transfusion service has ceased SCT testing for this population. Further research in the fetal/neonatal populations is needed to overturn this entrenched practice.
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Affiliation(s)
- Omar I Hajjaj
- Department of Laboratory Medicine & Molecular Diagnostics, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
- University of Toronto Quality in Utilization, Education & Safety in Transfusion (QUEST) Research Program, Toronto, Ontario, Canada
| | - Christine Cserti-Gazdewich
- University of Toronto Quality in Utilization, Education & Safety in Transfusion (QUEST) Research Program, Toronto, Ontario, Canada
- Department of Clinical Pathology, University Health Network, Toronto, Ontario, Canada
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Letka Dumevska
- Department of Paediatric Laboratory Medicine, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Mirette Hanna
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, Ontario, Canada
- Department of Paediatric Laboratory Medicine, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Wendy Lau
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, Ontario, Canada
- Department of Paediatric Laboratory Medicine, Hospital for Sick Children, Toronto, Ontario, Canada
- Canadian Blood Services, Donor and Clinical Services, Toronto, Ontario, Canada
| | - Lani Lieberman
- University of Toronto Quality in Utilization, Education & Safety in Transfusion (QUEST) Research Program, Toronto, Ontario, Canada
- Department of Clinical Pathology, University Health Network, Toronto, Ontario, Canada
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, Ontario, Canada
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Pirenne F. How to avoid the problem of erythrocyte alloimmunization in sickle cell disease. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2021; 2021:689-695. [PMID: 34889373 PMCID: PMC8877235 DOI: 10.1182/hematology.2021000306] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Erythrocyte alloimmunization is a major barrier to transfusion in sickle cell disease (SCD) because it can lead to transfusion deadlock and the development of life-threatening hemolytic transfusion reactions (HTRs). Several risk factors have been identified, such as blood group polymorphism in these patients of African ancestry frequently exposed to antigens they do not carry and an inflammatory clinical state of the disease. The most important preventive measure is prophylactic red blood cell antigen matching, and there is a consensus that matching for Rh (D, C, E, c, e) and K antigens should be performed for all SCD patients. However, some patients are high responders and more at risk of developing antibodies and HTRs. For these patients, the extension of matching to other blood groups, including variant antigens of the RH blood group, the use of genotyping rather than serology to characterize significant blood groups, and the prophylactic administration of immunosuppressive treatments remain a matter of debate due to low levels of certainty concerning their effects and the difficulty of determining which patients, other than those already immunized, are at high risk. These issues were recently addressed by a panel of experts established by the American Society of Hematology. Here, we review and stratify the various interventions for preventing alloimmunization, based on the literature and our experience and taking into account the obstacles to their implementation and any future developments required.
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Affiliation(s)
- France Pirenne
- University Paris Est Creteil, Inserm, Institut Mondor de Recherche Biomedicale, Creteil, France
- Etablissement Français du sang Ile-de-France, Institut Mondor de Recherche Biomedicale, Creteil, France
- Correspondence France Pirenne, Etablissement Français du Sang, Hôpital Henri Mondor, 51 Ave du Maréchal de Lattre de Tassigny, 94000 Créteil, France; e-mail:
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