Monosomy 6 is also found in 80–85% of WNT medulloblastomas(incidentally, these do not harbor telomerase reverse transcriptase [TERT]mutations), DEAD-box helicase 3 (DDX3X) mutations are found in 50% of WNT tumors,TERT mutations are found in 31% of WNT tumors 19, and the most common chromatin remodeling mutation found in WNT tumors isSMARCA4. Here, TERT is linked to medulloblastoma.