Given that deregulation of the interplay between ASCL1 and NDRG1 might be considered as an initiating molecular event involved in the progression from PN to MES subtypes, a better understanding of the mechanisms underlying gene expression changes (e.g., microenvironment-induced gene repression and derepression, etc.)may lay the foundation for the identification of therapeutic strategies specifically targeted to restrain PMT and GBM evolution. Here, NDRG1 is linked to Meckel syndrome, type 1.