PIK3CB and glioblastoma: Specifically, three members of cyclin-dependent kinases (CDK4, -6, and -9) and three members of the PI3K family (PI3K p110-delta subunit (PIK3CD), PI3K p110-beta subunit (PIK3CB), and PI3K p110-gamma subunit (PIK3CG)) were predicted to be targeted by GBM-N019.