The study will assess the safety and the dose of the combination of INC280 and buparlisib (BKM120), as well as the anti-tumor activity of the combination, in patients with recurrent glioblastoma with PTEN mutations, homozygous deletion of PTEN or PTEN negative by IHC. In addition, the anti-tumor activity of INC280 single agent will be assessed in patients with recurrent glioblastoma with c-Met alteration.