Humanized 3F8 Monoclonal Antibody (Hu3F8) in Patients With High-Risk Neuroblastoma and GD2-Positive Tumors

The purpose of this study is to find out if "humanized 3F8" (Hu3F8) is safe for treating neuroblastoma and other cancers. A phase 1 study means the investigators are trying to find out what side effects happen when higher and higher doses of a drug are used. The investigators want to find out what effects, good and/or bad, Hu3F8 has on cancer. The amount of Hu3F8 that patients gets will depend on when they start treatment on this study. The investigators also want to find out more about how Hu3F8 works and how effective it is in attacking the disease. Hu3F8 is an experimental drug, which means it has not yet been approved by the FDA for the treatment of this disease.