This study is exploring a treatment called trastuzumab deruxtecan for specific cancers: osteosarcoma (a bone cancer), Wilms tumor (a kidney cancer in children), and desmoplastic small round cell tumor (a rare cancer in the abdomen). This treatment is a combination of a targeted drug (an antibody) and chemotherapy. The antibody aims specifically at cancer cells that have a protein called HER2.
- Study Length: Treatment is given every 21 days for up to 35 cycles, with follow-up after 6 months.
- Visits Required: Patients will receive the drug through an IV and need regular scans and tests.
- Eligibility: Participants include children and young adults with these cancers who haven't responded to previous treatments.
Participants will be continuously monitored for side effects and the effectiveness of the treatment. It's important for families to consider the duration of the study and the need for regular hospital visits. Compensation details are not provided, and potential risks include typical side effects from chemotherapy and targeted treatments.