Abstract VAL-083 is a novel bi-functional DNA targeting agent that induces inter-strand cross-links at N7-guanine, leading to double-strand breaks and cell death. In vitro in vivo studies have demonstrated circumvents MGMT-mediated chemoresistance differentiates it from other therapies used the treatment of GBM, including temozolomide (TMZ). also acts as radiosensitizer against GBM cancer stem ...