Brain Neoplasms/genetics; Brain Neoplasms/metabolism; Metabolic Diseases/genetics; Metabolic Diseases/metabolism; Neuroectodermal Tumors, Primitive/genetics; Neuroectodermal Tumors, Primitive/metabolism; Adenomatous Polyposis Coli/genetics; Adenomatous Polyposis Coli/metabolism; Adenomatous Polyposis Coli/mortality; Basal Cell Nevus Syndrome/genetics; Basal Cell Nevus Syndrome/metabolism; Basal Cell Nevus Syndrome/mortality; Brain Neoplasms/mortality; Child; Child, Preschool; Fanconi Anemia/genetics; Fanconi Anemia/metabolism; Fanconi Anemia/mortality; Female; Humans; Infant; Male; Metabolic Diseases/mortality; Neuroectodermal Tumors, Primitive/mortality; Neurofibromatosis 1/genetics; Neurofibromatosis 1/metabolism; Neurofibromatosis 1/mortality; Retinal Neoplasms/genetics; Retinal Neoplasms/metabolism; Retinal Neoplasms/mortality; Retinoblastoma/genetics; Retinoblastoma/metabolism; Retinoblastoma/mortality; Retrospective Studies