Glioblastoma multiforme (GBM), the most common primary brain tumor in adults is known for its highly invasive and angiogenic profile. Despite advances in different modalities of GBM treatment, the overall prognosis of GBM remains dismal. The current standard of care is Radiation Therapy (RT) at a dose of 60 Gy (30 fractions) for 6 weeks with concurrent Temozolomide (TMZ; 75 mg/m2 daily for 6 weeks) followed by adjuvant TMZ (150/200mg/m2 daily, for 5 of 28 days x 6 months). The DNA repair protein O6-methylguanine methyltransferase (MGMT) removes alkyl adducts at the O6 position of guanine and therefore counteracts the cytotoxic effects of alkylating agents such as TMZ. Thus, GBM patients harboring tumors with unmethylated MGMT promoter and increased MGMT protein expression do not derive benefit from TMZ treatment.