Molecular analysis utilizing reverse transcription polymerase chain reaction (RT-PCR) was performed on the cerebellar tumor and showed no evidence of a PAX3-FOXO1 t(2;13) (q35;q14) or a PAX7-FOXO1 t(1;13) (p36;q14) chromosomal translocation. The gene discussed is FOXO1; the disease is cerebellar neoplasm.