Challenge Transfusion of INTERCEPT Pathogen Reduced Red Blood Cells (RBCs) in Subjects With or Without Pre-existing Antibodies to INTERCEPT RBCs

Brief Summary

This study aims to determine whether transfusion of INTERCEPT RBCs into patients with pre-existing antibodies to INTERCEPT RBCs will result in increased antibody titer indicative of a secondary immune response, and whether these immune responses would be associated with clinical adverse events, increased RBC clearance, and/or evidence of hemolysis. Because the recovery and survival of fresh allogeneic INTERCEPT RBCs in patients with a diverse group of diseases is poorly characterized, a Control group of subjects without a history or evidence of antibodies to INTERCEPT RBCs may be evaluated as a comparator (Control group subjects may or may not have previously been transfused with INTERCEPT RBCs). The study will also compare and correlate results from anti-human globulin (AHG) crossmatch using INTERCEPT RBCs prepared for transfusion, with results from indirect antiglobulin testing (IAT) with S 303 treated reagent RBCs (i.e., INTERCEPT RBC screening assay, as used in previous studies) to assess the utility of the AHG crossmatch to define the compatibility of transfused INTERCEPT RBCs

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