Summary
131I-Metaiodobenzylguanidine (131I-MIBG) is one of the most effective therapies utilized
for neuroblastoma patients with refractory or relapsed disease. In this pediatric phase 1
trial, 131I-MIBG will be given in combination with dinutuximab, a chimeric 14.18
monoclonal antibody. This study will utilize a traditional Phase I rolling 6 dose
escalation design to determine a recommended phase 2 pediatric dose. An expansion cohort
of an additional 6 patients will then be enrolled. If tolerable, vorinostat will then be
added to the third dose level. A 6 patient expansion cohort may then be enrolled.