TP53 and medulloblastoma: We analyzed 8 medulloblastoma that had been subtyped with an immunohistochemical approach [10]: 1 WNT-activated, 4 SHH-activated (3 TP53-wildtype and 1 TP53-mutant) and 3 non-WNT/non-SHH-activated cases (Fig. 2c and Suppl.