3 years ago

The impact of Daratumumab on transfusion service costs

Melissa M. Cushing, Robert A. DeSimone, Ruchika Goel, Yen-Michael S. Hsu, Priscilla Parra, Sabrina E. Racine-Brzostek, Diana Degtyaryova, Dian T. Lo, Meta Morrison, Kathleen M. Crowley, Adrianna Rossi, Ljiljana V. Vasovic

Abstract

BACKGROUND

Daratumumab (DARA) is a human IgG1κ monoclonal antibody directed against CD38, approved for the treatment of multiple myeloma. As CD38 is expressed on RBCs, DARA can interfere with pretransfusion testing. DARA interference can be negated by denaturation of CD38 on RBCs with dithiothreitol (DTT) reagents. Because of this interference in pretransfusion testing, our hospital implemented a notification and testing/transfusion algorithm (NATTA) for pretransfusion testing and RBC product provision for DARA patients. This standardized approach combines DTT‐based testing with selective genotyping and the provision of phenotypically similar RBCs for patients with clinically significant antibodies.

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