Company: DAWN
Filing Date: 2025-08-05
Form Type: 10-Q
Source: 0000950170-25-103012
Chunk: 8

Company: Day One Biopharmaceuticals, Inc.
Filing Date: 2025-08-05
Form: 10-Q
Item: Item 2
Chunk 8
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GGs, harboring an activating RAF alteration.

On April 23, 2024, we announced that the FDA approved OJEMDA™ (tovorafenib) for the treatment of patients 6 months of age and older with relapsed or refractory pLGG harboring a BRAF fusion or rearrangement, or BRAF V600 mutation. The indication was approved under accelerated approval based on a regulatory endpoint of overall response rate and the totality of the Company’s pivotal open-label Phase 2 trial, or FIREFLY-1, data, including duration of response. With the approval, we received a rare pediatric disease priority review voucher, or PRV, from the FDA. We have commenced the commercial launch of OJEMDA in the United States. OJEMDA is the only systemic therapy for pLGG that offers once-weekly dosing, with or without food, as a tablet or oral suspension.

The accelerated approval of OJEMDA is based on data from FIREFLY-1, 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. Arm 2 provided additional safety data from an incremental 60 patients and was initiated to enable access to OJEMDA once Arm 1 had fully accrued. Details of this trial were presented in November 2023 at the Society for Neuro-Oncology meeting through two oral plenary presentations and in parallel through a publication in Nature Medicine.