Alloimmunization to Red Cells and the Association of Alloantibodies Formation with Splenectomy Among Transfusion-Dependent β-Thalassemia Major/HbE Patients
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Severe hemolytic anemia in β-thalassemia major and β-thalassemias/HbE (β-TM) patients requires giving blood transfusions. Chronic blood transfusions lead to iron overload consequence with organs damage and risk of alloantibody-formation. This study evaluates the prevalence of red cell alloimmunization and estimates the risk of alloantibody-formation in chronic transfusion-dependent β-TM patients. This cross sectional study was conducted on 143 β-TM patients receiving regular transfusions. We tried to determine the frequency, types and factors influencing red cell alloimmunization in these transfusion-dependent β-TM patients. Median age of 25 (17.5 %) alloantibody-formation β-TM patients was 19.0 years (inter quartile 15.5-24.0 years). The alloantibodies were Anti-Rh (E) (13.1 %), Anti-Rh (D) (0.7 %). Thirty-four patients (23.8 %) of the sample had splenectomies of which 10 (29.4 %) had alloantibody-formation. The interval from first transfusion to antibody development varied from 1.5 to 14 years. Alloantibody-formation correlated with splenectomy and splenectomy correlated with number of transfusion (p < 0.005). In multiple logistic regression used to estimate the risk of alloantibodies formation with splenectomy; OR and 95 % CI were 2.88 (1.07-7.80), p = 0.037 after adjusting for other co-variates. The rate of red cell alloimmunization was 17.5 % and splenectomy associated with increased alloantibody-formation in these transfusion-dependent β-TM patients.
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Thakur S, Sinha A, Jahan A, Mathur A, Negi D, Singh S Bioinformation. 2023; 19(4):362-368.
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Aydemir D, Ulusu N Transfus Apher Sci. 2021; 60(3):103080.
PMID: 33608217 PMC: 7874911. DOI: 10.1016/j.transci.2021.103080.
Alloimmunization in Thalassemia Patients.
Joob B, Wiwanitkit V Int J Prev Med. 2019; 10:90.
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Red blood cell alloimmunisation in transfusion-dependent thalassaemia: a systematic review.
Franchini M, Forni G, Marano G, Cruciani M, Mengoli C, Pinto V Blood Transfus. 2019; 17(1):4-15.
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