Abstract:
BACKGROUND:DNA testing has enabled the documenting of numerous variants of RHCE alleles, especially in individuals of African origin. The risk for production of clinically significant alloantibodies to Rh antigens of patients carrying variant RHCE alleles has led us to analyze the different RhCE variants investigated by molecular biology. Alloimmunization was analyzed regarding the RHCE genetic profile. STUDY DESIGN AND METHODS:Samples from 806 individuals with altered expression of RhCE antigens and/or producing anti-RhCE in the presence of the corresponding antigen were analyzed. RESULTS:A total of 572 individuals were shown to express RhCE variants. Variant RHCE*ce alleles and RH haplotypes were identified in 83% of cases, the most frequent ones being the R(N) haplotype, the ceMO allele, the (C)ce(s) haplotype/ce(s) 1006 allele, and the ceAR allele identified in 36, 23, 20, and 17% of the tested samples, respectively. The absence of a high-prevalence Rh antigen was documented in 93 individuals. Partial C and partial e were expressed by 53% of individuals with RhCE variants. Rh antibodies were identified in 127 (20%) of 623 patients. They were found to be alloantibodies in 48 (38%) of these 127 patients. Alloimmunization against a high-prevalence Rh antigen was detected in 25% of cases. CONCLUSION:The challenge in clinical red blood cell (RBC) transfusion of patients with sickle cell disease, notably, would be to provide not only phenotypically matched, but also genetically matched, RBC units regarding RhCE variants.
journal_name
Transfusionjournal_title
Transfusionauthors
Pham BN,Peyrard T,Juszczak G,Beolet M,Deram G,Martin-Blanc S,Dubeaux I,Roussel M,Kappler-Gratias S,Gien D,Poupel S,Rouger P,Le Pennec PYdoi
10.1111/j.1537-2995.2010.02970.xsubject
Has Abstractpub_date
2011-06-01 00:00:00pages
1249-60issue
6eissn
0041-1132issn
1537-2995journal_volume
51pub_type
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