Pathogenic study of anti-CD20 infusion-related severe refractory shock in diffuse large B-cell lymphoma
2006
Although rituximab is an effective and safe therapy for B-cell lymphoid malignancies, a few cases of severe infusion-related reactions have been reported. Severe refractory distributive shock is an infrequent side-effect of treatment with rituximab and, to our knowledge, there are no reports describing its pathogenesis in a case of fatal outcome in detail. We present for the first time a case of fatal rituximab infusion-related refractory distributive shock in a patient with CD5+ diffuse large B-cell lymphoma (DLBCL) and analyse the pathogenic mechanisms involved. We have compared measurements obtained from the patient that experienced lethal refractory shock with the four subsequent DLBCL patients treated with rituximab, either at diagnosis or upon relapse, at our center. Serum cytokines [interferon (IFN)-γ, tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-2, IL-4, IL-6, IL-8, IL-10, IL-12p70] and complement components C3 and C4 were analysed, both pretreatment, and 3 h and 9 h after the onset of i...
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