About this trial

The goal of this study is to determine the efficacy of the study drug olutasidenib to treat newly diagnosed pediatric and young adult patients with a high-grade glioma (HGG) harboring an IDH1 mutation.

The main question the study aims to answer is whether the combination of olutasidenib and temozolomide (TMZ) can prolong the life of patients diagnosed with an IDH-mutant HGG.

Eligibility criteria

Qualifiers

Stratum A: Patients with localized, intracranial, non-pontine, and non-thalamic IDH 1 mutant Astrocytoma, CNS WHO Grade 3.

Stratum B: Patients with localized, intracranial, non-pontine, and non-thalamic IDH 1 mutant Astrocytoma, CNS WHO Grade 4.

Stratum C: Patients with IDH-1 mutant DIPG, primary thalamic and spinal cord IDH-1 mutant HGG.

Patients with a newly-diagnosed IDH1-mutant HGG including DIPG are eligible. All patients must have tumor tissue from diagnostic biopsy or resection, without exceptions. The diagnosis of HGG, including DIPG, must have been confirmed through TarGeT-SCR.

Disqualifiers

Pregnancy or Breast-Feeding: Pregnant or breast-feeding women will not be entered on this study due to unknown potential risks of fetal and teratogenic adverse events as seen in animal studies. Pregnancy tests must be obtained in girls who are post-menarchal. Patients of childbearing or child fathering potential must agree to use one highly effective method of contraception while being treated on this study and for 3 months after completing therapy. A woman is considered of childbearing potential if she is fertile, following menarche and until becoming post-menopausal unless permanently sterile. A postmenopausal state is defined as no menses for 12 months without an alternative medical cause. A high follicle stimulating hormone (FSH) level in the postmenopausal range may be used to confirm a post-menopausal state in women not using hormonal contraception or hormonal replacement therapy. However, in the absence of 12 months of amenorrhea, a single FSH measurement is insufficient. A man is considered fertile after puberty unless permanently sterile by bilateral orchidectomy. Male participants should refrain from sperm donation throughout the duration of treatment and for 3 months after completion of therapy.

Combined estrogen and progesterone containing hormonal contraception associated with inhibition of ovulation.

Progesterone-only hormonal contraception associated with inhibition of ovulation.

Intra Uterine Device (IUD).

Trial design

Treatments tested in this trial

  • Olutasidenib + TMZ

Treatment groups

60 Participants
are divided into 3 treatment groups

Locations

20
Australia
Sydney Children's Hospital2031, RandwickNew South Wales, Australia
Queensland Children's Hospital4101, South BrisbaneQueensland, Australia
Perth Children's Hospital6000, PerthWestern Australia, Australia
Canada
The Hospital for Sick Children (SickKids)M5G1X8, TorontoOntario, Canada

Sponsors and collaborators

Rigel Pharmaceuticals

Lead sponsor

Nationwide Children's Hospital

Collaborator