Genotyping of blood groups in alloimmunized patients with β-thalassemia major by T-ARMS-PCR and multiplex-aso-pcr.

Transfusion and Apheresis Science : Official Journal of the World Apheresis Association : Official Journal of the European Society for Haemapheresis
Mohammad Saeed GholamiAkbar Dorgalaleh

Abstract

Beta-thalassemia major is a severe hemolytic anemia requiring life-long blood transfusion. Planned random donor blood transfusion is associated with alloimmunization against incompatible antigens. Determination of the minor blood group systems phenotype or genotype, and administration of the compatible blood components can significantly reduce the rate of alloimmunization. The present study aimed to determine the prevalence of alloimmunization, and genotype/phenotype characteristics of the minor blood groups systems in patients with β-thalassemia major. This study was conducted on 1147 β-thalassemia major patients. Initially, antibody screening and antibody identification were performed. Then, phenotyping and genotyping for the Rh, Kell, Kidd, and Duffy blood groups were done in alloimmunized patients using monoclonal antibodies and Multiplex-Allele Specific Oligonucleotide-Polymerase Chain Reaction (Multiplex-ASO-PCR) and Tetra-primer amplification refractory mutation system-PCR (T-ARMS-PCR), respectively. Any phenotype/genotype discrepancy was assessed by direct sequencing. Ninety-seven (8.5 %) out of 1147 patients had alloantibodies against the minor blood group antigens (44 males, 45.4 %, and 53 female, 54.6 %). The most co...Continue Reading

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