Kazia Therapeutics Limited announced results from GBM-AGILE, a phase II/III study that included an evaluation of paxalisib versus standard of care (SOC) for patients with glioblastoma (NCT03522298), a life-threatening brain cancer, where there is an urgent unmet need for new therapeutics. GBM AGILE is an adaptive phase II/III global trial sponsored by the Global Coalition for Adaptive Research (GCAR), a nonprofit organization comprised of some of the world's foremost clinical, translational, and basic science researchers, from institutions such as Memorial Sloan Kettering Cancer Center and Dana-Farber Cancer Institute. The trial is designed to efficiently screen for and characterize the response of glioblastoma (GBM) patients to novel investigative agents.

In general, secondary analyses and endpoints are assessed based on established statistical models in comparison to the control patients enrolled at the same time as the investigational agent (concurrent control population). Paxalisib is the third drug candidate to complete its evaluation in the study and was evaluated in newly diagnosed glioblastoma patients with unmethylated MGMT promoter status as well as in patients with recurrent disease. A total of 313 newly diagnosed unmethylated (NDU) patients and recurrent patients being treated at top US cancer hospitals were randomized in Stage 1 to either a paxalisib treatment arm (60 mg/day) or the SOC concurrent control arm from January 2021 to May 2022.

Kazia is currently pursuing further analyses of this data to elucidate potential signals for further consideration. Based on the totality of data available from all completed paxalisib clinical studies in newly diagnosed unmethylated GBM patients, Kazia will request a meeting with the US Food & Drug Administration (FDA) to discuss the results and determine if a potential path to accelerated approval is appropriate for paxalisib. Paxalisib has previously received orphan drug designation and fast track designation from the FDA for glioblastoma in unmethylated MGMT promoters status patients, following radiation plus temozolomide therapy.

Full data including secondary endpoints from the paxalisib arm of the GBM AGILE study is expected to be presented at a scientific meeting later this year.