Moreover, MYCN and EGFR amplification, PDGFR activation, resistance to TRAIL-induced apoptosis, epigenetic oncogenic deregulation, and increased expression of stem-cell maintenance markers are features shared by both the intracranial brain tumors such as medulloblastoma and the extracranial peripheral nervous system tumor, neuroblastoma. The gene discussed is PDGFRB; the disease is medulloblastoma.