Abstract
Malignant central nervous system (CNS) tumors in young children have a poor prognosis and pose a therapeutic challenge. We describe 11 patients with high-risk CNS tumors (6 atypical teratoid/rhabdoid tumor, 4 nonmedulloblastoma CNS embryonal tumors, and 1 glioblastoma multiforme) who received 32 consolidation cycles of myeloablative carboplatin/thiotepa followed by autologous peripheral blood stem cell rescue. All patients underwent successful stem cell harvest without significant complications. Mean time to absolute neutrophil count ≥0.5×103/µL was 10.2±1.3 days and the mean length of hospital stay was 15.7±3.0 days. There were no regimen-related deaths. Five-year event-free survival and overall survival were 45.5±15.0% and 58.4±16.3%, respectively. Tandem carboplatin/thiotepa consolidation with autologous stem cell rescue is well-tolerated in young children with nonmedulloblastoma CNS tumors.
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