Optimise viewing for

Toggle between patient and health professional views. The patient version is simplified to help people easily find suitable trials, while the professional view provides full detail.

No longer recruiting (closed or complete)Last updated: 15 May 2026

Firefly-2: This study is evaluating how safe and tolerable targeted therapy (called tovorafenib) is compared to standard of care chemotherapy in children, adolescents and young adults with low-grade glioma with activating RAF alternation who have not had prior treatmentA Phase 3, Randomized, International Multicenter Trial of DAY101 Monotherapy Versus Standard of Care Chemotherapy in Patients With Pediatric Low-Grade Glioma Harboring an Activating RAF Alteration Requiring First-Line Systemic Therapy

Trial purpose

Medical clipboardCancer treatment

Tumor type

Brain and Spinal Cancers Brain and Spinal

Age

People0 - 25

Trial acronym

Firefly-2

Clinical summary

Summary

Approximately 400 treatment-naïve people with low-grade glioma will be randomly allocated (by chance) to one of two treatment arms.

In Arm 1 (Experimental), participants will receive tovorafenib, which is an oral pan-RAF inhibitor.

In Arm 2 (Active Comparator), participants will receive the Investigator's choice of one of the following standard of care chemotherapy regimens:

  • Children's Oncology Group - Vincristine/Carboplatin (COG-V/C) regimen
  • International Society for Paediatric Oncology - Low-Grade Glioma Vincristine/Carboplatin (SIOPe-LGG-V/C) regimen
  • Vinblastine (VBL) regimen
  • or monthly Carboplatin.

The choice of chemotherapy regimen will be selected prior to patient randomisation. 

Conditions

This trial is treating people with low-grade glioma who have not had prior treatment with a known activating RAF alteration

Eligibility

Inclusion

  • Less than 25 years of age with LGG with known activating RAF alteration
  • Histopathologic diagnosis of glioma or glioneuronal tumor
  • At least one measurable lesion as defined by RANO criteria
  • Meet indication for first-line systemic therapy

Exclusion

  • Patient has any of the following tumor-histological findings:

    1. Schwannoma
    2. Subependymal giant cell astrocytoma (Tuberous Sclerosis)
    3. Diffuse intrinsic pontine glioma, even if histologically diagnosed as World Health Organization (WHO) Grade I-II
  • Patient's tumor has additional pathogenic molecular alterations
  • Known or suspected diagnosis of neurofibromatosis Type 1 or 2 (NF-1/NF-2)
  • Prior or ongoing nonsurgical anticancer therapy for this indication (eg, chemotherapy, oral/intravenous targeted therapy) including radiation

Inclusion

  • You have been diagnosed with cancer, but have not received any treatment.
  • You are able to swallow medication by mouth.

Exclusion

  • You have certain types of non-cancer medical conditions.
  • You have had certain treatments, surgical procedures or drugs.
Message

Clinical trials have complex eligibility criteria, and other criteria may apply for this trial. Ask your doctor about whether this trial could be right for you.

Participating hospitals

+ Show non-recruiting hospitals

No longer recruiting (closed or complete) hospitals

InformationTell us if you find this trial availability is not accurate.Report inaccuracy

More information

Trial Identifiers

Information on this page is partially produced from ClinicalTrials.gov, EU Clinical Trials Register *. View further details about this trial on the registry via the links below:

Trial sponsor

Day One Biopharmaceuticals, Inc.

Scientific Title

A Phase 3, Randomized, International Multicenter Trial of DAY101 Monotherapy Versus Standard of Care Chemotherapy in Patients With Pediatric Low-Grade Glioma Harboring an Activating RAF Alteration Requiring First-Line Systemic Therapy

Get Support

Peer Connect

You might find it helpful to speak to someone who has 'been there before'. Our Peer Connect program can provide one-on-one phone support from someone who understands what you're going through and has clinical trials experience.

Know more about Peer Connect

Contact cancer support

If you need cancer information and practical support for yourself, a carer, family or friend, contact Cancer Council to speak with an experienced health professional on 13 11 20.

Get support

Multilingual information

Learn more about clinical trials through this collection of resources in languages other than English.

View information