A Phase II, Open Label, Two Arm Study of Therapeutic Iobenguane (131I) as Single Agent or in Combination with Vorinostat for Recurrent or Progressive High-Risk Neuroblastoma Subjects (OPTIMUM Trial) Protocol Number: MIBG 2014-01

This will be a Phase II, two-arm, nonrandomized, non-comparative, open-label study in participants ≥ 1 year of age with iobenguane avid, recurrent or progressive high-risk neuroblastoma. Participants not eligible for vorinostat treatment may receive 131I-MIBG as monotherapy.