Biomarkers in Tumor Tissue Samples From Younger Patients With Rhabdomyosarcoma

Studying Biomarkers in Samples From Younger Patients With Acute Myeloid Leukemia

Biomarkers in Tissue Samples From Patients With High-Risk Wilms Tumor

Developing and Treating a Mouse Model of Acute Myeloid Leukemia Using Tissue Samples From Younger Patients With Acute Myeloid Leukemia

Study of DNA in Blood Samples From Patients With Neuroblastoma

A Study of Ramucirumab (LY3009806) in Children With Refractory Solid Tumors

Identification of de Novo Fanconi Anemia in Younger Patients With Newly Diagnosed Acute Myeloid Leukemia

Study of Tumor Samples From Patients With Ewing Sarcoma

Biomarkers in Samples From Younger Patients With Wilms Tumor

Biomarkers in Bone Marrow Samples From Pediatric Patients With High-Risk Acute Myeloid Leukemia

Biomarker Expression in Tissue Samples From Patients With Bone Sarcomas

Studying Protein Expression in Tissue Samples From Younger Patients With Rhabdomyosarcoma

Studying Genes in Tissue Samples From Younger and Adolescent Patients With Soft Tissue Sarcomas