Dina Attias1, Sheila Weitzman. 1. Division of Pediatric Hematology/Oncology, Bnai Zion Medical Center, Bruce Rappoport Faculty of Medicine, Technion Institute, Haifa, Israel.
Abstract
PURPOSE OF REVIEW: This review evaluates whether rituximab has efficacy in high-grade pediatric B-cell lymphoma/leukemia. Current pediatric protocols for CD20+ B-cell lymphoma/leukemia significantly improve survival, but with major morbidity. To assess whether rituximab has efficacy in very high-grade pediatric disease, all published data on rituximab therapy for Burkitt's lymphoma/B acute lymphoblastic leukaemia (B-ALL) and pediatric patients with relapsed/refractory large B-cell lymphoma were reviewed. RECENT FINDINGS: Three trials in adult Burkitt's/B-ALL showed a significant survival advantage when rituximab was added to standard chemotherapy. Minimal pediatric data have been published, but 19 children with mature B-cell lymphoma/B-ALL received rituximab, alone or in combination with chemotherapy, as salvage therapy, after failure of intensive chemotherapy. Fifteen of 19 (79%) responded, 12 (63%) remained alive in continuous complete remission at 5+ to 48+ months of follow-up. Two patients were alive in partial remission. Five patients died, four of progressive disease. Only one patient had no response to rituximab. SUMMARY: Rituximab has demonstrated efficacy in Burkitt's disease in adults. Although positive reporting bias is suspected, it appears that rituximab, even as monotherapy, has efficacy in heavily pretreated pediatric patients with high-grade B-lymphoma/B-ALL. Rituximab use can be justified in a prospective controlled chemotherapy dose-reduction study.
PURPOSE OF REVIEW: This review evaluates whether rituximab has efficacy in high-grade pediatric B-cell lymphoma/leukemia. Current pediatric protocols for CD20+ B-cell lymphoma/leukemia significantly improve survival, but with major morbidity. To assess whether rituximab has efficacy in very high-grade pediatric disease, all published data on rituximab therapy for Burkitt's lymphoma/B acute lymphoblastic leukaemia (B-ALL) and pediatric patients with relapsed/refractory large B-cell lymphoma were reviewed. RECENT FINDINGS: Three trials in adult Burkitt's/B-ALL showed a significant survival advantage when rituximab was added to standard chemotherapy. Minimal pediatric data have been published, but 19 children with mature B-cell lymphoma/B-ALL received rituximab, alone or in combination with chemotherapy, as salvage therapy, after failure of intensive chemotherapy. Fifteen of 19 (79%) responded, 12 (63%) remained alive in continuous complete remission at 5+ to 48+ months of follow-up. Two patients were alive in partial remission. Five patients died, four of progressive disease. Only one patient had no response to rituximab. SUMMARY:Rituximab has demonstrated efficacy in Burkitt's disease in adults. Although positive reporting bias is suspected, it appears that rituximab, even as monotherapy, has efficacy in heavily pretreated pediatric patients with high-grade B-lymphoma/B-ALL. Rituximab use can be justified in a prospective controlled chemotherapy dose-reduction study.
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