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Monoclonal anti‐CD47 interference in red cell and platelet testing

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Anti‐CD47 (Hu5F9‐G4) is a human monoclonal immunoglobulin G (IgG)4 antibody that is in clinical trials to treat hematologic or solid malignancies. CD47, a glycoprotein expressed on all cells, binds to… Click to show full abstract

Anti‐CD47 (Hu5F9‐G4) is a human monoclonal immunoglobulin G (IgG)4 antibody that is in clinical trials to treat hematologic or solid malignancies. CD47, a glycoprotein expressed on all cells, binds to signal‐regulatory protein α on macrophages and regulates phagocytosis. Blocking CD47 is thought to enhance phagocytosis and promote antitumor responses. Here, we evaluate drug interference in pretransfusion testing, determine mitigation strategies, and compare interference with anti‐CD38 (Daratumumab).

Keywords: anti cd47; monoclonal anti; interference; cd47 interference

Journal Title: Transfusion
Year Published: 2019

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