question: What is the involvement of PDGFRB in metastatic medulloblastoma?
answer: Platelet-derived growth factor (PDGF) receptor B (PDGFRB) expression was shown to correlate with metastatic medulloblastoma, while PDGFRB tyrosine kinase activity was demonstrated to be critical for migration and invasion of medulloblastoma cells possibly by transactivating EGFR.