EMX2 and glioblastoma: To assess if Emx2 can antagonize glioblastoma multiforme, we overexpressed its coding sequence in 2 GBM lines (U87MG and T98G) as well as in GBM cell cultures originating from 5 different patients (GbmA, GbmB, GbmC, GbmD and GbmE), via lentiviral vectors and TetON technology.