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  • Title: Low-dose craniospinal irradiation and ifosfamide, cisplatin and etoposide for non-metastatic embryonal tumors in the central nervous system.
    Author: Yasuda K, Taguchi H, Sawamura Y, Ikeda J, Aoyama H, Fujieda K, Ishii N, Kashiwamura M, Iwasaki Y, Shirato H.
    Journal: Jpn J Clin Oncol; 2008 Jul; 38(7):486-92. PubMed ID: 18573848.
    Abstract:
    OBJECTIVE: The current study was conducted to evaluate the effects of low-dose craniospinal irradiation (CSI) combined with chemotherapy on non-metastatic embryonal tumors in the central nervous system (CNS), including medulloblastoma and supra-tentorial primitive neuroectodermal tumors (ST-PNET). METHODS: All patients were treated according to the following protocol. After surgery, the patients < or =5 years old received 18 Gy and the patients >5 years old received 24 Gy CSI. The dose to the primary tumor bed was 39.6-54 Gy. Chemotherapy consisted of ifosfamide, cisplatin and etoposide (ICE chemotherapy). RESULTS: Sixteen patients aged 0.5-20.4 (median 6.1) years were enrolled and followed for 11-165 (median 112) months. Both 5-year actuarial overall survival (OAS) and progression-free survival (PFS) were 81% (95% confidence interval (CI): 62-100%) for the 16 patients. Both 5-year OAS and PFS were 82% (CI: 59-100%) for the patients with medulloblastoma and 80% (CI: 45-100%) for the patients with ST-PNET. Both 5-year OAS and PFS were 75% for the eight patients < or =5 years old and 88% for the eight patients >5 years old. Both 5-year OAS and PFS were 100% for six average-risk patients (3 years or older, total resection and posterior fossa) and 70% for 10 poor-risk patients (others). The median total intellectual quotient at the last follow-up was 85 (ranging from 48 to 103) in 12 patients who were followed for 3-145 (median 49) months. Eight patients received hormone replacement therapy. CONCLUSION: Low-dose CSI and ICE chemotherapy may have a role as a treatment option for a subset of patients with non-metastatic embryonal tumors in the CNS.
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