Phase II Study of Temozolomide in Relapsed or Refractory High-Risk Neuroblastoma: A Joint Société Française des Cancers de l’Enfant and United Kingdom Children Cancer Study Group–New Agents Group Study
2006
Purpose To determine the response rate (RR) of neuroblastoma (NB) in children to temozolomide (TMZ), and evaluate the duration of response and tolerance of the drug in this patient population. Patients and Methods A multicenter, phase II evaluation of an oral, daily schedule of TMZ (200 mg/m2/d × 5 days every 28 days) was undertaken in children with refractory or relapsed high-risk NB (metastatic or localized with Myc-N amplification). Response assessment was based on imaging with two-dimentional measurement of disease and meta-iodobenzylguanidine (MIBG) score. Activity was defined by a reduction in lesion size or isotope uptake at anytime. Methodology included a two-step design using Fleming’s method with a first step of 15 patients and a second of 10 additional patients if two to four responses had been observed in the first cohort. All data was centrally reviewed by a panel. Results Twenty-five assessable patients were recruited over a 14-month period in 14 centers and received 94 cycles of chemotherap...
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