Conducting Early Phase Trials of Promising Treatments in Neuro-Oncology

In a conversation with CancerNetwork®, Shewetal Mehta, PhD, spoke about her research team’s focuses in moving novel brain cancer therapies down the pipeline as part of an early phase clinical trials program at the Ivy Brain Tumor Center.

Mehta, the deputy director and pre-clinical core leader at the Ivy Brain Tumor Center of Barrow Neurological Institute in Phoenix, Arizona, underscored a scientifically rigorous, patient-driven philosophy that drives her team members to deliver timely answers to those with brain cancer via work in a clinical lab and a pre-clinical arm. This collaboration helps identify therapeutic agents that may demonstrate activity in the brain while determining patient populations who are suitable to enroll on clinical trials.

As part of her institution’s early phase trial program, Mehta specifically highlighted work associated with a phase 0/1 clinical trial (NCT06072586) evaluating BDTX-1535, a brain-penetrant fourth-generation EGFR inhibitor, for those with recurrent high-grade glioma harboring oncogenic EGFR alterations or fusions.1 Investigators are incorporating liquid biopsy, sampling cerebrospinal fluid from patients on treatment to monitor potential evolutions or changes in brain tumors.

Regarding biomarker testing, Mehta described the roles that gene sequencing and immunohistochemistry can play in identifying targetable alterations in patients with brain cancer. She described vorasidenib (Voranigo), which received approval from the FDA in August 2024, as an example of a targeted therapy that may be suitable for use in patients who are found to have actionable IDH mutations.2

“Over the last year, we’ve seen that we were capable of not just doing these early phase clinical trials [but of entering] this phase of moving drugs into phase 3 [studies]. That’s exciting,” Mehta stated regarding her outlook on the current state of brain cancer treatment. “Right now, we are excited about these new classes of agents that are within the space, like the proteolysis targeting chimeras, protein degraders, and antibody-drug conjugates, which have shown amazing promise in the rest of the oncology space.”

References

1. Study of BDTX-1535 in recurrent high-grade glioma (HGG) participants with EGFR alterations or fusions. ClinicalTrials.gov. Updated January 15, 2025. Accessed January 15, 2025. https://tinyurl.com/m6kwr2b3
2. FDA approves vorasidenib for grade 2 astrocytoma or oligodendroglioma with a susceptible IDH1 or IDH2 mutation. News release. FDA. August 6, 2024. Accessed January 20, 2025. https://tinyurl.com/25r9fkvy