The BIOMEDE 2.0 study is the second stage of the BIOMEDE multi-arm, multistage rolling programme (adaptive platform protocol).
It is a multicenter, randomized, open-label, controlled phase-3 trial evaluating efficacy of ONC201 in comparison with everolimus (primary objective based on internal comparison) and subsequently to historical controls.
Two treatment groups will be compared. A switch between treatment groups is allowed after confirmation of the disease progression (real-time central review blinded to the treatment arm allocation). Study treatment will be continued until centrally confirmed disease progression (either radiologically or histologically), unacceptable toxicity or consent withdrawal.
The final conclusion of the trial will be successful for ONC201, if ONC201 is found significantly superior to everolimus in terms of centrally-reviewed PFS (Progression-free survival) from randomization (internal comparison) either overall, considering ND-DMG and DIPG-patients together, or in the subgroup of ND-DMG patients alone. In other cases, Everolimus will remain the standard arm unless it appears associated with an excess of toxicity compared to ONC201 which could then be discussed as a new standard.
Diagnosis of DIPG (clinical and radiological). As biopsy is not standard for these tumors, an informed consent is required for the necessary histological verification. [Biopsy-part of BIOMEDE 2.0 trial]. OR
Histological diagnosis of DIPG (i.e. H3K28M or EZHIP positive Diffuse Midline Glioma located in the pons) in case the tumor biopsy was performed before study entry. The diagnosis will be defined by 1/ diffuse glioma, 2/ H3K28M mutation or loss of H3K28 trimethylation together with EZHIP overexpression. In this situation, patient will sign the consent after the diagnosis to allow central review and biomarkers assessment thereafter. OR
Molecular diagnosis of DIPG (i.e. H3K28M) in case a liquid biopsy (CSF or blood) was performed before study entry, in a patient who could not undergo a tumor biopsy because it was too dangerous according to the patient's clinical condition. The diagnosis will be defined by 1/ DIPG, 2/ H3K28M mutation. In this situation, patient will sign the consent after the diagnosis to allow collection of the molecular report. OR
Non-DIPG diffuse midline gliomas (ND-DMG), H3K28M mutant or with H3K28 trimethylation loss together with EZHIP overexpression, will be eligible for the trial after biopsy or surgery. As biopsy and surgery is considered as standard practice for these locations, informed consent for the biopsy will not be necessary. Patient will sign the consent after the diagnosis to allow central review and biomarkers assessment thereafter. OR
None
Crossover
Everolimus
DrugTablets of 2.5 mg or 10 mg. The prescribed dose is 5 mg/m²/day, orally, once daily. Dose will be capped at 10 mg once daily.
ONC201
DrugCapsules of 125mg. The prescribed dose is 375mg/m², orally, once daily at Day 1 and Day 2 of each week. Dose will be capped at 625 mg per dose.
Radiotherapy
RadiationAll patients will be treated with 30 conventional single daily fractions of 1.8 Gy to a total of 54 Gy over a planned period of 6 weeks. Dose may be increased up to 60 Gy for adult patients with supratentorial ND-DMG. The clinical target volume will include all the areas of abnormality on T2/FLAIR sequences with a 1-cm margin. Radiotherapy will have to start within a maximum of 4 weeks for DIPG, up to 6 weeks for other DMG H3K28-altered (ND-DMG), after the biopsy or last surgery. The study medication will be started at Day 1 (+3 days max) of radiotherapy. Reirradiation is permitted only at disease progression according to local practice. In case of metastatic disease or intramedullary tumors, patients can be included in the study. In this situation, radiotherapy will have to start within a maximum of 4 weeks for DIPG, up to 6 weeks for other DMG H3K28-altered (ND-DMG), after the biopsy or last surgery while targeted treatment will start at the end of the irradiation.
Progression-free survival
Defined as the time between date of randomization and unequivocal clinical, cytological or radiological progression confirmed by central review, or death whatever the cause.
Overall survival (for all the comparisons to historical controls)
Defined from the date of radiological diagnosis to the date of death from any cause.
Overall survival (for the internal comparison between randomized groups)
Defined from the date of randomization to the date of death from any cause.
Progression-free survival after first progression
It will also be computed from the date of progression to the date of subsequent progression or death from any cause, in order to describe the outcome after progression.
Complication rate of the diagnostic biopsy-based procedure
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Gustave Roussy, Cancer Campus, Grand Paris
Lead sponsor
Innovative Therapies For Children with Cancer Consortium
Collaborator
Ministry of Health, France
Collaborator
Jazz Pharmaceuticals
Collaborator
