Pediatric Brain Tumor Therapy Approved
FDA has granted Day One Biopharmaceuticals accelerated approval for Ojemda (tovorafenib), a Type 2 RAF inhibitor for treating patients six months of age and older with relapsed or refractory BRAF-altered pediatric low-grade glioma (pLGG), the most common form of childhood brain tumors. “BRAF is the most commonly altered gene in pLGG, with up to 75% of children having a BRAF alteration,” the company says.
Approval was based on data from the company’s pivotal open-label Phase 2 FIREFLY-1 trial, which enrolled a total of 137 relapsed or refractory BRAF-altered pLGG patients across two study arms. “Arm 1, which accrued 77 patients, was used for the efficacy analyses,” Day One says. “Arm 2 provided additional safety data from an incremental 60 patients and was initiated to enable access to tovorafenib once Arm 1 had fully accrued.” The median duration of response was 13.8 months, and 66% of patients remained on study and continue on treatment as of the 11/2023 cutoff date, it adds.
Regarding safety, the majority of adverse events were Grade 1 or Grade 2, Day One says. The most common side effects were rash, hair color changes, tiredness, viral infection, vomiting, headache, fever, dry skin, constipation, nausea, acne and upper respiratory tract infection.