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  • Title: Serologic characteristics of oxaliplatin antibodies in 15 patients with drug-induced immune hemolytic anemia.
    Author: Nguyen TN, Maenulein E, Fihman V, Vinatier I, Moh Klaren J.
    Journal: Transfusion; 2021 May; 61(5):1609-1616. PubMed ID: 33686704.
    Abstract:
    BACKGROUND: Oxaliplatin, a third-generation platinum derivative is commonly used in combination treatment of metastatic colorectal cancer. Since 2008, it is the second most common cause of drug-induced immune hemolytic anemia (DIIHA) investigated in our laboratory. STUDY DESIGN AND METHODS: Samples from fifteen patients including nine (60%) with intravascular hemolysis, suspected of having DIIHA were studied for the presence of anti-oxaliplatin. Direct antiglobulin tests (DATs) and tests with oxaliplatin-treated red blood cells (RBCs) or untreated and enzyme-treated RBCs in the presence of oxaliplatin were performed. A pool of normal AB sera with no unexpected antibodies was used as a control for nonimmunologic protein adsorption (NIPA). RESULTS: Eleven (73%) of the fifteen patients had antibodies to oxaliplatin that reacted with drug-treated RBCs and untreated RBCs in the presence of drug by tube and/or gel method. Lower-titer reactivity (<20) obtained with four patients' sera and the corresponding pooled normal sera was most likely due to NIPA. Eighty seven percent (13/15) of the patients had positive DAT either with anti-IgG only (33%), IgG + C3d (40%), or C3d only (13%). Two patients had a negative DAT. No directly agglutinating antibody was observed with the pools of normal donor's sera in the presence of oxaliplatin. CONCLUSION: Anti-oxaliplatin can cause severe intravascular hemolysis. Complement can usually be detected on the patient's RBCs and anti-oxaliplatin can be detected in the patient's serum. RBC-bound albumin detection with anti-human albumin needs to be performed to confirm NIPA which could have contributed to the patient's hemolytic anemia.
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