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Oxaliplatin immune-mediated thrombocytopenia: Is there a role for premedication or desensitization?
Strauss Gal1, Markovits Noa1, Margalit Ofer1
1Department of Oncology, Sheba Medical Center, Israel.
Abstract:
Oxaliplatin is a common chemotherapy agent that is used in the treatment of multiple solid malignancies. Immune-mediated thrombocytopenia is a rare and potentially life-threatening adverse effect of oxaliplatin that is characterized by severe thrombocytopenia, which may be accompanied by overt bleeding. This adverse effect is probably mediated via anti-platelet antibodies that become reactive in the presence of oxaliplatin. Due to its rarity and severity, information is scarce regarding the effect of desensitization or attempts at rechallenge after prolonged withdrawal of oxaliplatin. This short report describes 3 cases of oxaliplatin immune-mediated thrombocytopenia, including a case occurring under desensitization protocol and a case of recurrence after a prolo nged withdrawal. All 3 patients are female, have prolonged exposures to oxaliplatin and were all treated for metastatic colorectal cancer. Physicians should be aware of oxaliplatin immune-mediated thrombocytopenia as symptoms may appear rapidly. Oxaliplatin should be permanently discontinued for patients experiencing this adverse effect, as recurrence is highly likely even in the setting of desensitization.
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