Overview
The purpose of this study is to test any good and bad effects of the study drug 131I-omburtamab. 131I-omburtamab could prevent the cancer from returning, or delay the cancer from getting worse, but it could also cause side effects. Researchers hope to learn more about how 131I-omburtamab works in the body, and how effective it is in treating cancer. 131I-Omburtamab is not approved by the FDA to treat DSRCT or other cancers of the peritoneum.
Eligibility
Inclusion Criteria:
- Have the diagnosis of DSRCT confirmed at MSKCC
- Age >1 year and able to cooperate with radiation safety restrictions during therapy period.
- Prior to intraperitoneal catheter placement
- At least 1 weeks must have elapsed since prior chemotherapy
- At least 2 weeks must have elapsed since biologic therapy
- Toxicities of prior therapy must have resolved to grade 1 or less or to the patient's baseline
At the completion of surgery, patients must fulfill all of the additional following criteria: - Have no definitive radiological evidence of disease active in liver or outside the abdomen/pelvic OR have had GTR of this disease at the time of catheter placement Exclusion Criteria: - Prior progression of disease - Prior hypothermic intraperitoneal chemotherapy (HIPEC) - Cardiac, pulmonary, and neurologic toxicity should be grade 1 or less per NCI CTC version 5 - Renal, gastrointestinal, and hepatic, toxicities should all be grade 2 of less (per NCI CTC version 5) - History of allergy to mouse proteins - Patients with grade 4 hypersensitivity reaction to radiolabeled iodine