Cabozantinib-S-Malate in Treating Younger Patients With Recurrent, Refractory, or Newly Diagnosed Sarcomas, Wilms Tumor, or Other Rare Tumors

This phase II trial studies how well cabozantinib-s-malate works in treating younger patients with sarcomas, Wilms tumor, or other rare tumors that have come back, do not respond to therapy, or are newly diagnosed. Cabozantinib-s-malate may stop the growth of tumor cells by blocking some of the enzymes needed for tumor growth and tumor blood vessel growth.

Eligibility

• Ages 18 years old or younger
• Medullary thyroid carcinoma (MTC), renal cell carcinoma (RCC) and hepatocellular carcinoma (HCC)
• Patients must have a body surface area >= 0.35 m^2
• Patients must have recurrent or refractory disease, or newly diagnosed disease with no known curative therapy or therapy proven to prolong survival with an acceptable quality of life; patients must have had histologic verification of one of the malignancies listed below at original diagnosis or at relapse:

- Ewing sarcoma
- Rhabdomyosarcoma (RMS)
- Non-rhabdomyosarcoma soft tissue sarcomas (STS) including microphthalmia transcription factor associated STS (alveolar soft part sarcoma [ASPS] and clear cell sarcoma [CCS])
- Wilms tumor
- Rare tumors
- Medullary thyroid carcinoma (MTC)
- Renal cell carcinoma (RCC)
- Hepatocellular carcinoma (HCC)
- Hepatoblastoma
- Adrenocortical carcinoma
- Pediatric solid tumors (including central nervous system [CNS] tumors) with known molecular alterations in the targets of XL184 (i.e., MET amplification, overexpression, activating mutation, MET translocation, MET exon skipping mutations, activating RET mutations, overexpression or activation of AXL); documentation of the alteration from a Clinical Laboratory Improvement Act (CLIA) certified laboratory will be required

• Patients must have radiographically measurable disease; measurable disease is defined as the presence of at least one lesion on magnetic resonance imaging (MRI) or computed tomography (CT) scan that can be accurately measured with the longest diameter a minimum of 10 mm in at least one dimension (CT scan slice thickness no greater than 5 mm)

- Note: The following do NOT qualify as measurable disease:
- Malignant fluid collections (e.g., ascites, pleural effusions)
- Bone marrow infiltration
- Lesions only detected by nuclear medicine studies (e.g., bone, gallium or positron emission tomography [PET] scans)
- Elevated tumor markers in plasma or cerebrospinal fluid (CSF)
- Previously radiated lesions that have not demonstrated clear progression post radiation
- Leptomeningeal lesions that do not meet the measurement parameters noted above

• Patients must have a Lansky or Karnofsky performance status score of >= 50, corresponding to Eastern Cooperative Oncology Group (ECOG) categories 0, 1 or 2; use Karnofsky for patients > 16 years of age and Lansky for patients =< 16 years of age; patients who are unable to walk because of paralysis, but who are up in a wheelchair, will be considered ambulatory for the purpose of assessing the performance score
• Patients must have fully recovered from the acute toxic effects of all prior chemotherapy, immunotherapy, or radiotherapy prior to entering this study
• Patients with solid tumors must not have received myelosuppressive chemotherapy within 3 weeks of enrollment onto this study (6 weeks if prior nitrosourea)
• At least 7 days must have elapsed since the completion of therapy with a growth factor; at least 14 days must have elapsed after receiving pegfilgrastim
• At least 7 days must have elapsed since completion of therapy with a biologic agent; for agents that have known adverse events occurring beyond 7 days after administration, this period prior to enrollment must be extended beyond the time during which adverse events are known to occur.
• At least 3 half-lives must have elapsed since prior therapy that included a monoclonal antibody

Contact

For additional study information please reach out to Ashley Bayne:

• Phone: 352-294-8745
• Email: abayne@ufl.edu