Abstract
The search of HLA antibodies is currently more accessible by solid-phase techniques (Luminex) in the immunized patients leading to an expansion of the antibody patterns. The aim of this study was to investigate low median fluorescence intensity value in unexpected reactivity patterns. Here, we performed HLAMatchmaker analyses to evaluate the potential functional epitopes that can elicit HLA-specific alloantibody responses in a pregnancy-sensitized woman with an epitope defined by the 82LR. Surprisingly, in according to the registry of HLA epitopes, we found that 82LR epitope covered all allelic specificities of our unexpected antibody patterns, shared between Bw4-positive HLA-B antigen and HLA-A23, -A24, -A25 and -A32. This finding is consistent with the verification of HLA ABC epitope recorded in the website-based HLA Epitope Registry and addresses the importance of determining HLA antibody epitope-specificities on Luminex technique-dependent antibody reactivity.
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