TRTH-29. CONTEXT-SPECIFIC TUMOR SUPPRESSIVE FUNCTION OF THE CANONICAL WNT PATHWAY IN PEDIATRIC MEDULLOBLASTOMA HIGHLIGHTS A THERAPEUTIC STRATEGY FOR TREATMENT-REFRACTORY SUBGROUPS

Current molecular subgroups of childhood medulloblastoma (MB) recognize distinct disease entities of which activated Wnt signaling is associated with a distinct subgroup and the best overall outcome. In contrast, non-Wnt MBs are characterized by metastatic disease, increased rate of recurrence, and poor overall survivorship. Given the excellent clinical outcome in Wnt-driven MB, we aimed to convert treatment-resistant MB subgroups 3 and 4 into …