MBCL-49. PROGNOSTIC SIGNIFICANCE OF MOLECULAR SUBGROUPS OF MEDULLOBLASTOMA IN CHILDREN RECEIVING IRRADIATION-SPARING REGIMENS

BACKGROUND: Radiation therapy, while a mainstay of medulloblastoma treatment, is associated with significant age-dependent neurocognitive morbidity in children. Relatively little is known about the subgroup-specific outcome of infants and young children with medulloblastoma treated with irradiation-sparing regimens. METHODS: Infants and young children