Efficacy
Efficacy Results
Results with OJEMDA
Major efficacy outcome: ORR using RAPNO-LGG criteria1
53%
ORR
95% CI: 41, 64 (n=40/76)
Response rates
MR: 14% (n=11)
PR: 38% (n=29)
No complete responses were
seen using RAPNO-LGG criteria
Patient Cases
See example patients who could be appropriate for OJEMDA
MEET EMILY
- Emily was diagnosed 4 years ago with pLGG after a localized tumor in the optic pathway was suggested by MRI
- Histology was consistent with pilocytic astrocytoma
Age: 6
Height: 3' 6"
Weight: 45 lb
Sex: F
Race/ethnicity: White/
Not Hispanic
GENOMIC TEST RESULTS
- KIAA1549-BRAF fusion–positive
MEDICAL HISTORY
- Diagnosed due to lethargy and decreased visual activity, including loss of sight (right eye)
- Surgical resection was ruled out due to tumor’s location, but biopsy was recommended
PRIOR TREATMENT
- Achieved partial response with chemotherapy (total treatment duration: 12 months)
- Side effects of chemotherapy included anemia, grade 3 neutropenia, and neutropenic fever
- Now shows signs of radiographic and clinical progression after 2 years in remission
WHY OJEMDA MAY BE RIGHT FOR PATIENTS LIKE EMILY
OJEMDA was studied in patients like Emily
LOCATION: 51% had an optic pathway glioma1
HISTOLOGY: 94% had tumors with astrocytic histology2
ALTERATION TYPE: 74% had a KIAA1549-BRAF fusion or rearrangement1
MEDIAN AGE: 8.5 years (range 2 to 21 years)1
Patients in the FIREFLY-1 trial saw clinically meaningful response rates1
Overall population (N=76):
- ORR: 53% (95% CI: 41, 64)
- Median TTR: 5.4 months (range 1.6-17.5 months)
Consider OJEMDA as your first choice for patients like Emily who progressed after chemotherapy.
BRAF=v-Raf murine sarcoma viral oncogene homolog B1; CR=complete response; DOR=duration of response; MAPK=mitogen-activated protein kinase; MEK=mitogen-activated protein kinase kinase; MR=minor response; MRI=magnetic resonance imaging; ORR=overall response rate; pLGG=pediatric low-grade glioma; PR=partial response; RAPNO=Response Assessment in Pediatric Neurology-Oncology; RAPNO-LGG=Response Assessment in Pediatric Neuro-Oncology for Low-Grade Glioma; R/R=relapsed/refractory; TTR=time to response.
View a generally well-tolerated safety profile
See the safety profile
References
- 1. OJEMDA™ [Package Insert]. Brisbane, CA: Day One Biopharmaceuticals, Inc.; 2025.
- 2. Data on file. Day One Biopharmaceuticals, Inc.
- 3. Kilburn LB, Khuong-Quang DA, Hansford JR, et al. The type II RAF inhibitor tovorafenib in relapsed/refractory pediatric low-grade glioma: the phase 2 FIREFLY-1 trial. Nat Med. 2024;30(1):207-217. doi:10.1038/s41591-023-02668-y
- 4. ClinicalTrials.gov identifier: NCT02684058. Published December 13, 2023. Accessed February 20, 2024. https://clinicaltrials.gov/study/NCT02684058
- 5. Fangusaro J, Witt O, Driever PH, et al. Response assessment in paediatric low-grade glioma: recommendations from the Response Assessment in Pediatric Neuro-Oncology (RAPNO) working group. Lancet Oncol. 2020;21(6):e305-e316. doi:10.1016/S1470-2045(20)30064-4