BDNF and glioblastoma: In our previous study, we had demonstrated a retardation of proliferation of glioblastoma cell cultures, Grade IV, after GQIcombi treatment: cytostatic G-quadruplex bi-(AID-1-T) oligonucleotide (21), SB431542 (SB), purmorphamine (PRM), LDN-193189 (LDN), and Brain-Derived Neurotrophic Factor (BDNF) (24).