RAPID TUMOR LYSIS IN A PATIENT WITH B-CELL CHRONIC LYMPHOCYTIC-LEUKEMIA AND LYMPHOCYTOSIS TREATED WITH AN ANTI-CD20 MONOCLONAL-ANTIBODY (IDEC-C2B8, RITUXIMAB)
M. Jensen et al., RAPID TUMOR LYSIS IN A PATIENT WITH B-CELL CHRONIC LYMPHOCYTIC-LEUKEMIA AND LYMPHOCYTOSIS TREATED WITH AN ANTI-CD20 MONOCLONAL-ANTIBODY (IDEC-C2B8, RITUXIMAB), Annals of hematology, 77(1-2), 1998, pp. 89-91
In this report we present a patient with B-cell chronic lymphocytic le
ukemia who developed an acute tumor lysis syndrome after administratio
n of the human anti-CD20 antibody IDEC-C2B8 (RITUXIMAB) in standard do
se of 375 mg/m(2). IDEC-C2B8 has been demonstrated to have only mild a
nd tolerable side effects in patients with follicular lymphoma. In the
se trials patients with lymphocytosis > 5000/mu l were excluded. Physi
cians must be aware of this hitherto unreported phenomenon in patients
with high CD20-positive blood counts.