Overexpression of LIN28B is also associated with poor prognosis in medulloblastoma (Fig. 1C; and [4, 5]); however, within the SHH subgroup, there was no difference in LIN28B expression between p53 wild‐type and p53 mutant tumors, which have a worse prognosis, suggesting differential functions for LIN28B in the SHH subgroup (Fig. S1c). Here, TP53 is linked to medulloblastoma.