I. To determine the objective response rate (ORR; complete response + partial response) in pediatric patients treated with PI3K/mTOR inhibitor LY3023414 (LY3023414) with advanced solid tumors, non-Hodgkin lymphomas or central nervous system (CNS) tumors that harbor TSC loss of function mutations, that harbor other PI3K/MTOR activating mutations, and if efficacy is observed in a MATCHed cohort, in patients that lack mutations in the PI3K/MTOR pathway.