- Conditions
- Advanced Malignant Solid Neoplasm, Recurrent Ependymoma, Recurrent Ewing Sarcoma/Peripheral Primitive Neuroectodermal Tumor, Recurrent Glioma, Recurrent Hepatoblastoma, Recurrent Kidney Wilms Tumor, Recurrent Langerhans Cell Histiocytosis, Recurrent Malignant Germ Cell Tumor, Recurrent Malignant Glioma, Recurrent Malignant Solid Neoplasm, Recurrent Medulloblastoma, Recurrent Neuroblastoma, Recurrent Non-Hodgkin Lymphoma, Recurrent Osteosarcoma, Recurrent Rhabdoid Tumor, Recurrent Rhabdomyosarcoma, Recurrent Soft Tissue Sarcoma, Refractory Ependymoma, Refractory Ewing Sarcoma/Peripheral Primitive Neuroectodermal Tumor, Refractory Glioma, Refractory Hepatoblastoma, Refractory Langerhans Cell Histiocytosis, Refractory Malignant Germ Cell Tumor, Refractory Malignant Glioma, Refractory Malignant Solid Neoplasm, Refractory Medulloblastoma, Refractory Neuroblastoma, Refractory Non-Hodgkin Lymphoma, Refractory Osteosarcoma, Refractory Primary Central Nervous System Neoplasm, Refractory Rhabdoid Tumor, Refractory Rhabdomyosarcoma, Refractory Soft Tissue Sarcoma
- Interventions
- Biospecimen Collection, Bone Marrow Aspiration and Biopsy, Bone Scan, Computed Tomography, Larotrectinib Sulfate, Magnetic Resonance Imaging, Radionuclide Imaging, X-Ray Imaging
- Procedure · Drug
- Lead sponsor
- National Cancer Institute (NCI)
- NIH
- Eligibility
- 12 Months to 21 Years
- Enrollment
- 9 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2026
- U.S. locations
- 122
- States / cities
- Birmingham, Alabama • Anchorage, Alaska • Mesa, Arizona + 95 more
Source: ClinicalTrials.gov public record
Updated Apr 22, 2026 · Synced May 21, 2026, 5:47 PM EDT