Study of Efficacy and Safety of Dabrafenib in Combination With Trametinib in Pediatric Patients With BRAF V600 Mutation Positive LGG or Relapsed or Refractory HGG Tumors
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| ClinicalTrials.gov Identifier: NCT02684058 |
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Recruitment Status :
Completed
First Posted : February 17, 2016
Results First Posted : May 19, 2023
Last Update Posted : December 13, 2023
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| Condition or disease | Intervention/treatment | Phase |
|---|---|---|
| Diffuse Astrocytoma Anaplastic Astrocytoma Astrocytoma Oligodendroglioma, Childhood Anaplastic Oligodendroglioma Glioblastoma Pilocytic Astrocytoma Giant Cell Astrocytoma Pleomorphic Xanthoastrocytoma Anaplastic Pleomorphic Xanthoastrocytoma Angiocentric Glioma Chordoid Glioma of Third Ventricle Gangliocytoma Ganglioglioma Anaplastic Ganglioglioma Dysplastic Gangliocytoma of Cerebrellum Desmoplastic Infantile Astrocytoma and Ganglioglioma Papillary Glioneuronal Tumor Rosette-forming Glioneurona Tumor Central Neurocytoma Extraventricular Neurocytoma Cerebellar Iponeurocytoma | Drug: Dabrafenib Drug: trametinib Drug: Carboplatin Drug: Vincristine | Phase 2 |
This study combines two pediatric glioma cohorts (LGG and HGG cohorts) into a multi-center, open-label, Phase II study:
- The LGG cohort is a multi-center, randomized, open-label part of this Phase II study conducted in children and adolescent patients with BRAF V600 mutation-positive LGG whose tumor was unresectable and who required first systemic treatment. Participants in the LGG cohort were randomized in a 2:1 ratio to either dabrafenib plus trametinib or carboplatin with vincristine.
- The HGG cohort is a multi-center, single-arm, open-label part of this Phase II study conducted in children and adolescent patients with BRAF V600 mutation-positive, refractory or relapsed HGG tumors after having received at least one previous standard therapy.
The duration of treatment for participants on dabrafenib plus trametinib in LGG and for all patients in the HGG cohort was continued until the loss of clinical benefit in the opinion of the Investigator, unacceptable toxicity, start of a new anti-neoplastic therapy, discontinuation at the discretion of the investigator or patient/legal guardian, lost to follow-up, death, study termination by the sponsor, or until disease progression. The duration of treatment for patients in the carboplatin with vincristine arm in LGG cohort was continued for the prescribed number of cycles, as tolerated or until unacceptable toxicity, start of a new anti-neoplastic therapy, discontinuation at the discretion of the investigator or patient/legal guardian, lost to follow-up, death, study is terminated by the sponsor or until disease progression. Participants randomized to the carboplatin with vincristine treatment arm were allowed to cross over to receive dabrafenib in combination with trametinib after centrally confirmed RANO-defined disease progression. Crossover was allowed during the treatment period or the post-treatment period.
After discontinuation of study treatment, all participants (LGG and HGG cohorts) were followed for safety for at least 30 days after the last dose of study treatment. All participants who discontinued study treatment for reasons other than disease progression, death, loss to follow up, or withdrawal of consent moved into the post-treatment efficacy follow-up phase. Finally, all participants were followed for survival once they discontinued study treatment for at least 2 years after the last patient first study treatment (except if consent was withdrawn, death, or the patient was lost to follow-up or discontinued study)
| Study Type : | Interventional (Clinical Trial) |
| Actual Enrollment : | 151 participants |
| Allocation: | Randomized |
| Intervention Model: | Parallel Assignment |
| Masking: | None (Open Label) |
| Primary Purpose: | Treatment |
| Official Title: | Phase II Open-label Global Study to Evaluate the Effect of Dabrafenib in Combination With Trametinib in Children and Adolescent Patients With BRAF V600 Mutation Positive Low Grade Glioma (LGG) or Relapsed or Refractory High Grade Glioma (HGG) |
| Actual Study Start Date : | December 28, 2017 |
| Actual Primary Completion Date : | August 23, 2021 |
| Actual Study Completion Date : | April 28, 2023 |
| Arm | Intervention/treatment |
|---|---|
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Experimental: LGG cohort: dabrafenib and trametinib
Participants in the LGG cohort randomized to receive dabrafenib (orally, twice daily and dosed based on weight and age) in combination with trametinib (orally, once daily in combination with the first daily dose of dabrafenib and was dosed based on weight)
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Drug: Dabrafenib
Dabrafenib was available as 50 mg and 75 mg hard capsules and as 10 mg dispersible tablets for oral suspension. Dabrafenib was administered orally, twice daily, and was dosed based on age and weight Patients < 12 years old and ≥ 16 kg were to be administered either the dabrafenib capsules or dabrafenib dispersible tablets for oral suspension (dose: 5.25 mg/kg/day) Patients ≥ 12 years old and ≥ 19 kg were to be administered either the dabrafenib capsules or dabrafenib dispersible tablets for oral suspension (dose: 4.5 mg/kg/day) Patients < 12 years old and < 16 kg were to be administered dabrafenib dispersible tablets for oral suspension (dose: 5.25 mg/kg/day) Patients ≥12 years old and <19 kg were to be administered dabrafenib dispersible tablets for oral suspension (dose: 4.5 mg/kg/day)
Other Name: DRB436 Drug: trametinib Trametinib was available as 0.5 mg and 2 mg film-coated tablets and as 5.0 mg powder in bottle for oral solution (0.05 mg/ml after reconstitution with 90 ml water).Trametinib was administered orally, once daily in combination with the first daily dose of dabrafenib and was dosed based on age and weight. Patients <6 years old and <26 kg were to be administered the trametinib oral solution (dose: 0.032 mg/kg/day) Patients <6 years old and ≥26 kg were to be administered either the trametinib oral solution or trametinib tablets (dose: 0.032 mg/kg/day) Patients ≥6 years old and ≥10 kg < 33 kg were to be administered the trametinib oral solution (dose: 0.025 mg/kg/day) Patients ≥6 years old and ≥33 kg were to be administered either the trametinib oral solution or the trametinib tablets (dose: 0.025 mg/kg/day) Other Name: TMT212 |
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Active Comparator: LGG cohort: carboplatin and vincristine
Participants in the LGG cohort randomized to receive active comparator chemotherapy (carboplatin and vincristine). Participants received one course of induction (10 weeks of chemotherapy with 2 weeks of rest), followed by 8 cycles of maintenance chemotherapy.
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Drug: Carboplatin
Carboplatin was supplied locally as commercially available and labelled accordingly to comply with legal requirements of each country. Carboplatin was administered as one course of induction (10 weeks of chemotherapy with 2 weeks of rest), followed by 8 cycles of maintenance chemotherapy. Each maintenance cycle was 6 weeks, and consisted of 4 weeks of chemotherapy with 2 weeks of rest. Induction: 175 mg/m^2 as weekly intravenous (IV) infusion on weeks 1 to 4, and on weeks 7 to 10, on the same day as vincristine dosing Maintenance: 175 mg/m^2 as weekly IV infusion over 60 minutes on weeks 1 to 4 of each cycle. Drug: Vincristine Vincristine was supplied locally as commercially available and labelled accordingly to comply with legal requirements of each country. Vincristine was administered as one course of induction (10 weeks of chemotherapy with 2 weeks of rest), followed by 8 cycles of maintenance chemotherapy. Induction: 1.5 mg/m^2 as weekly IV bolus infusion (0.05 mg/kg if child is <12 kg) (maximum dose of 2.0 mg) for 10 weeks. Maintenance: 1.5 mg/m^2 as weekly IV bolus infusion (0.05 mg/kg if child is <12 kg) (maximum dose of 2.0 mg) on weeks 1 to 3 of each cycle, on the same day as carboplatin dosing. |
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Experimental: HGG cohort: dabrafenib and trametinib
Participants in the HGG cohort received dabrafenib (orally, twice daily and dosed based on weight and age) and trametinib (orally, once daily in combination with the first daily dose of dabrafenib and dosed based on weight)
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Drug: Dabrafenib
Dabrafenib was available as 50 mg and 75 mg hard capsules and as 10 mg dispersible tablets for oral suspension. Dabrafenib was administered orally, twice daily, and was dosed based on age and weight Patients < 12 years old and ≥ 16 kg were to be administered either the dabrafenib capsules or dabrafenib dispersible tablets for oral suspension (dose: 5.25 mg/kg/day) Patients ≥ 12 years old and ≥ 19 kg were to be administered either the dabrafenib capsules or dabrafenib dispersible tablets for oral suspension (dose: 4.5 mg/kg/day) Patients < 12 years old and < 16 kg were to be administered dabrafenib dispersible tablets for oral suspension (dose: 5.25 mg/kg/day) Patients ≥12 years old and <19 kg were to be administered dabrafenib dispersible tablets for oral suspension (dose: 4.5 mg/kg/day)
Other Name: DRB436 Drug: trametinib Trametinib was available as 0.5 mg and 2 mg film-coated tablets and as 5.0 mg powder in bottle for oral solution (0.05 mg/ml after reconstitution with 90 ml water).Trametinib was administered orally, once daily in combination with the first daily dose of dabrafenib and was dosed based on age and weight. Patients <6 years old and <26 kg were to be administered the trametinib oral solution (dose: 0.032 mg/kg/day) Patients <6 years old and ≥26 kg were to be administered either the trametinib oral solution or trametinib tablets (dose: 0.032 mg/kg/day) Patients ≥6 years old and ≥10 kg < 33 kg were to be administered the trametinib oral solution (dose: 0.025 mg/kg/day) Patients ≥6 years old and ≥33 kg were to be administered either the trametinib oral solution or the trametinib tablets (dose: 0.025 mg/kg/day) Other Name: TMT212 |
- LGG Cohort: Overall Response Rate (ORR) by Central Independent Assessment Using Response Assessment in Neuro-Oncology (RANO) Criteria [ Time Frame: Up to approximately (approx.) 3 years ]
Percentage of participants in the LGG cohort with a best overall confirmed Complete Response (CR) or Partial Response (PR) as assessed per RANO criteria by central independent assessment. The 95% confidence intervals (CIs) were computed using two-sided exact binomial method.
CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses.
PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically.
- HGG Cohort: Overall Response Rate (ORR) by Central Independent Assessment Using RANO Criteria [ Time Frame: Up to approx. 3.2 years ]
Percentage of participants in the HGG cohort with a best overall confirmed CR or PR as assessed per RANO criteria by central independent assessment. The 95% CIs were computed using two-sided exact binomial method.
CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses.
PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically.
- LGG Cohort: ORR by Investigator Assessment Using RANO Criteria [ Time Frame: Up to approx. 3 years and up to approx 4.2 years ]
Percentage of participants in the LGG cohort with a best overall confirmed CR or PR as assessed per RANO criteria by investigator assessment. The 95% CIs were computed using two-sided exact binomial method.
CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses.
PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically.
- LGG Cohort: Kaplan-Meier Estimates of Duration of Response (DOR) as Per Central Independent Assessment Using RANO Criteria [ Time Frame: Up to approx. 3 years and up to approx 4.2 years ]
Time from first documented response (PR or CR) until disease progression or death as per RANO criteria. Confidence Intervals were estimated using the Brookmeyer Crowley method. Patients who had not progressed or died or had received further anticancer therapy, were censored at the date of the last adequate tumor evaluation.
CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses.
PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically.
- LGG Cohort: Kaplan-Meier Estimates of Duration of Response (DOR) as Per Investigator Assessment Using RANO Criteria [ Time Frame: Up to approx. 3 years and up to approx 4.2 years ]
Time from first documented response (PR or CR) until disease progression or death as per RANO criteria. Confidence Intervals were estimated using the Brookmeyer Crowley method. Patients who had not progressed or died or had received further anticancer therapy, were censored at the date of the last adequate tumor evaluation.
CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses.
PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically.
- LGG Cohort: Kaplan-Meier Progression-Free Survival (PFS) as Per Central Independent Assessment Using RANO Criteria [ Time Frame: Up to approx. 3 years and up to approx 4.2 years ]Time from the date of randomization to the date of first documented disease progression as per central independent review assessment using RANO criteria or death due to any cause. Confidence Intervals were estimated using the Brookmeyer Crowley method. Patients who had not progressed or died or had received further anticancer therapy were censored at the date of the last adequate tumor evaluation.
- LGG Cohort: Kaplan-Meier Progression-Free Survival (PFS) as Per Investigator Assessment Using RANO Criteria [ Time Frame: Up to approx. 3 years and up to approx 4.2 years ]Time from the date of randomization to the date of first documented disease progression as per investigator assessment using RANO criteria or death due to any cause. Confidence Intervals were estimated using the Brookmeyer Crowley method. Patients who had not progressed or died or had received further anticancer therapy were censored at the date of the last adequate tumor evaluation.
- LGG Cohort: Kaplan-Meier Estimates of Time to Response (TTR) as Per Central Independent Assessment Using RANO Criteria [ Time Frame: Up to approx. 4.2 years ]
Time from randomization to first documented response of CR or PR as per central independent assessment using RANO criteria. CIs were estimated using the Brookmeyer Crowley method. Patients without an event were censored either at the maximum follow-up time (if they experienced disease progression or death), or at their last tumor assessment date.
CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses.
PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically.
- LGG Cohort: Kaplan-Meier Estimates of Time to Response (TTR) as Per Investigator Assessment Using RANO Criteria [ Time Frame: Up to approx. 4.2 years ]
Time from randomization to first documented response of CR or PR as per investigator assessment using RANO criteria. CIs were estimated using the Brookmeyer Crowley method. Patients without an event were censored either at the maximum follow-up time (if they experienced disease progression or death), or at their last tumor assessment date.
CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses.
PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically.
- LGG Cohort: Clinical Benefit Rate (CBR) by Central Independent Assessment Using RANO Criteria [ Time Frame: Up to approx. 4.2 years ]
Percentage of participants with a best overall response of CR or PR, or stable disease (SD) which lasts for 24 weeks or longer.
CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses.
PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically.
SD: Partient did not qualify for CR, PR, or progressive disease and has stable nonenhancing (T2/FLAIR) lesions on same or lower doses of corticosteroids compared with baseline scan and clinically stable status.
- LGG Cohort: Clinical Benefit Rate (CBR) by Investigator Assessment Using RANO Criteria [ Time Frame: Up to approx. 4.2 years ]
Percentage of participants with a best overall response of CR or PR, or stable disease (SD) which lasts for 24 weeks or longer.
CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses.
PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically.
SD: Partient did not qualify for CR, PR, or progressive disease and has stable nonenhancing (T2/FLAIR) lesions on same or lower doses of corticosteroids compared with baseline scan and clinically stable status.
- LGG Cohort: Kaplan-Meier Estimates of Overall Survival (OS) [ Time Frame: Up to 4.6 years ]Time from first dose to death due to any cause in the LGG cohort. Confidence Intervals were estimated using the Brookmeyer Crowley method. If a patient was not known to have died at the time of analysis cut-off, OS was censored at the date of last contact.
- LGG Cohort: 2-year OS Estimate [ Time Frame: 2 years from first dose ]OS was defined as the time from the first dose to death due to any cause in the LGG cohort. The 2-year Kaplan-Meier OS estimate represented the estimated percentage of participants remaining free from OS events for up to 2 years. If a patient was not known to have died at the time of analysis cut-off, OS was censored at the date of last contact
- HGG Cohort: ORR by Investigator Assessment Using RANO Criteria [ Time Frame: Up to approx. 3.2 years and up to approx. 4.8 years ]
ORR in the HGG cohort defined as the percentage of participants in the HGG cohort with a best overall confirmed CR or PR as assessed per RANO criteria by investigator assessment. The 95% CIs were computed using two-sided exact binomial method.
CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses.
PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically.
- HGG Cohort: Kaplan-Meier Estimates of Duration of Response (DOR) as Per Central Independent Assessment Using RANO Criteria [ Time Frame: Up to approx. 3.2 years and up to approx. 4.8 years ]
Time from first documented response (PR or CR) until disease progression or death as per central independent assessment using RANO criteria. CIs were estimated using the Brookmeyer Crowley method. Patients who had not progressed or died or had received further anticancer therapy were censored at the date of the last adequate tumor evaluation.
CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses.
PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically.
- HGG Cohort: Kaplan-Meier Estimates of Duration of Response (DOR) as Per Investigator Assessment Using RANO Criteria [ Time Frame: Up to approx. 3.2 years and up to approx. 4.8 years ]
Time from first documented response (PR or CR) until disease progression or death as per investigator assessment using RANO criteria. CIs were estimated using the Brookmeyer Crowley method. Patients who had not progressed or died or had received further anticancer therapy were censored at the date of the last adequate tumor evaluation.
CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses.
PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically.
- HGG Cohort: Kaplan-Meier Estimates of Progression Free Survival (PFS) as Per Central Independent Assessment Using RANO Criteria [ Time Frame: Up to approx. 4.8 years ]Time from the date of first dose of study treatment to the date of first documented disease progression as per central independent review assessment using RANO criteria or death due to any cause. Confidence Intervals were estimated using the Brookmeyer Crowley method. Patients who had not progressed or died or had received further anticancer therapy were censored at the date of the last adequate tumor evaluation.
- HGG Cohort: Kaplan-Meier Estimates of Progression Free Survival (PFS) as Per Investigatort Assessment Using RANO Criteria [ Time Frame: Up to approx. 4.8 years ]Time from the date of first dose of study treatment to the date of first documented disease progression as per investigator assessment using RANO criteria or death due to any cause. Confidence Intervals were estimated using the Brookmeyer Crowley method. Patients who had not progressed or died or had received further anticancer therapy were censored at the date of the last adequate tumor evaluation.
- HGG Cohort: Time to Response (TTR) as Per Central Independent Assessment Using RANO Criteria [ Time Frame: Up to approx. 4.8 years ]
Time from start of treatment to first documented response of CR or PR as per independent assessment using RANO criteria. CIs were estimated using the Brookmeyer Crowley method. Patients without an event were censored either at the maximum follow-up time (if they experienced disease progression or death), or at their last tumor assessment date.
CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses.
PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically.
- HGG Cohort: Time to Response (TTR) as Per Investigator Assessment Using RANO Criteria [ Time Frame: Up to approx. 4.8 years ]
Time from start of treatment to first documented response of CR or PR as per investigator assessment using RANO criteria. CIs were estimated using the Brookmeyer Crowley method. Patients without an event were censored either at the maximum follow-up time (if they experienced disease progression or death), or at their last tumor assessment date.
CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses.
PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically.
- HGG Cohort: Clinical Benefit Rate (CBR) as Per Central Independent Assessment Using RANO Criteria [ Time Frame: Up to approx. 4.8 years ]
Percentage of participants with a best overall response of CR or PR, or stable disease (SD) which lasts for 24 weeks or longer.
CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses.
PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically.
SD: Partient did not qualify for CR, PR, or progressive disease and has stable nonenhancing (T2/FLAIR) lesions on same or lower doses of corticosteroids compared with baseline scan and clinically stable status.
- HGG Cohort: Clinical Benefit Rate (CBR) as Per Investigator Assessment Using RANO Criteria [ Time Frame: Up to approx. 4.8 years ]
Percentage of participants with a best overall response of CR or PR, or stable disease (SD) which lasts for 24 weeks or longer.
CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses.
PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically.
SD: Partient did not qualify for CR, PR, or progressive disease and has stable nonenhancing (T2/FLAIR) lesions on same or lower doses of corticosteroids compared with baseline scan and clinically stable status.
- HGG Cohort: Kaplan-Meier Estimates of Overall Survival (OS) [ Time Frame: Up to 5.1 years ]Time from first dose to death due to any cause in the LGG cohort. Confidence Intervals were estimated using the Brookmeyer Crowley method. If a patient was not known to have died at the time of analysis cut-off, OS was censored at the date of last contact.
- AUClast for Trametinib [ Time Frame: Week 3 Day 1 pre-dose and 0.5, 1, 2, 3, 4, 6, 8 hours post-dose ]Pharmacokinetic (PK) parameters were calculated by standard non-compartmental analysis. AUClast is the area under the curve (AUC) from time zero to the last measurable concentration sampling time (tlast).
- Cmax for Trametinib [ Time Frame: Week 3 Day 1 pre-dose and 0.5, 1, 2, 3, 4, 6, 8 hours post-dose ]PK parameters were calculated by standard non-compartmental analysis. Cmax is the maximum plasma drug concentration after single dose administration
- AUCtau for Trametinib [ Time Frame: Week 3 Day 1 pre-dose and 0.5, 1, 2, 3, 4, 6, 8 hours post-dose ]PK parameters were calculated by standard non-compartmental analysis. AUCtau is the AUC calculated to the end of a dosing interval (tau) at steady-state
- Tmax for Trametinib [ Time Frame: Week 3 Day 1 pre-dose and 0.5, 1, 2, 3, 4, 6, 8 hours post-dose ]PK parameters were calculated by standard non-compartmental analysis. Tmax is the time to reach maximum plasma concentration. Actual recorded sampling times were considered for the calculations.
- T1/2 for Trametinib [ Time Frame: Week 3 Day 1 pre-dose and 0.5, 1, 2, 3, 4, 6, 8 hours post-dose ]PK parameters were calculated by standard non-compartmental analysis. T1/2 is the elimination half-life
- Ctrough for Trametinib [ Time Frame: Week 3 Day 1 pre-dose ]PK parameters were calculated by standard non-compartmental analysis. Ctrough is the pre-dose plasma concentration
- AUClast for Dabrafenib and Its Metabolites (Carboxy-dabrafenib, Desmethyl-dabrafenib Amd Hydroxy-dabrafenib) [ Time Frame: Week 3 Day 1 pre-dose and 0.5, 1, 2, 3, 4, 6, 8 hours post-dose ]PK parameters were calculated by standard non-compartmental analysis. AUClast is the area under the curve (AUC) from time zero to the last measurable concentration sampling time (tlast).
- Cmax for Dabrafenib and Its Metabolites (Carboxy-dabrafenib, Desmethyl-dabrafenib Amd Hydroxy-dabrafenib) [ Time Frame: Week 3 Day 1 pre-dose and 0.5, 1, 2, 3, 4, 6, 8 hours post-dose ]PK parameters were calculated by standard non-compartmental analysis. Cmax is the maximum plasma drug concentration after single dose administration
- AUCtau for Dabrafenib and Its Metabolites (Carboxy-dabrafenib, Desmethyl-dabrafenib Amd Hydroxy-dabrafenib) [ Time Frame: Week 3 Day 1 pre-dose and 0.5, 1, 2, 3, 4, 6, 8 hours post-dose ]PK parameters were calculated by standard non-compartmental analysis. AUCtau is the AUC calculated to the end of a dosing interval (tau) at steady-state
- Tmax for Dabrafenib and Its Metabolites (Carboxy-dabrafenib, Desmethyl-dabrafenib Amd Hydroxy-dabrafenib) [ Time Frame: Week 3 Day 1 pre-dose and 0.5, 1, 2, 3, 4, 6, 8 hours post-dose ]PK parameters were calculated by standard non-compartmental analysis. Tmax is the time to reach maximum plasma concentration. Actual recorded sampling times were considered for the calculations.
- T1/2 for Dabrafenib and Its Metabolites (Carboxy-dabrafenib, Desmethyl-dabrafenib Amd Hydroxy-dabrafenib) [ Time Frame: Week 3 Day 1 pre-dose and 0.5, 1, 2, 3, 4, 6, 8 hours post-dose ]PK parameters were calculated by standard non-compartmental analysis. T1/2 is the elimination half-life
- Ctrough for Dabrafenib and Its Metabolites (Carboxy-dabrafenib, Desmethyl-dabrafenib Amd Hydroxy-dabrafenib) [ Time Frame: Week 3 Day 1 pre-dose ]PK parameters were calculated by standard non-compartmental analysis. Ctrough is the pre-dose plasma concentration
- HGG and LGG Cohort: Palatability of Dabrafenib Oral Suspension Based on the Palatability Questionnaire Item: Taste of the Medication Before Rinsing the Mouth [ Time Frame: Week 1 and Week 5 ]Participants who received the dabrafenib dispersible tablets for oral suspension completed a questionnaire to evaluate the palatability of the pediatric formulation. After taking the medication, participants provided feedback on how it tasted before rinsing with water, rating their experience as very good, good, neither good nor bad, bad or very bad. The ratings of very good, good, and neither good nor bad were grouped together for reporting purposes.
- HGG and LGG Cohort: Palatability of Trametinib Oral Solution Based on the Palatability Questionnaire Item: Taste of the Medication Before Rinsing the Mouth [ Time Frame: Week 1 and Week 5 ]Participants who received the trametinib oral solution completed a questionnaire to evaluate the palatability of the pediatric formulation. After taking the medication, participants provided feedback on how it tasted before rinsing with water, rating their experience as very good, good, neither good nor bad, bad or very bad. The ratings of very good, good, and neither good nor bad were grouped together for reporting purposes.
- HGG and LGG Cohort: Palatability of Dabrafenib Oral Suspension Based on the Palatability Assessment: After- Taste Once the Medication Was Swallowed [ Time Frame: Week 1 and Week 5 ]Participants who received the dabrafenib dispersible tablets for oral suspension completed a questionnaire to evaluate the palatability of the pediatric formulation. After taking the medication, participants provided feedback on the after-taste of the medication after the medication was swallowed, rating their experience as very good, good, neither good nor bad, bad or very bad. The ratings of very good, good, and neither good nor bad were grouped together for reporting purposes.
- HGG and LGG Cohort: Palatability of Trametinib Oral Solution Based on the Palatability Assessment: After- Taste Once the Medication Was Swallowed [ Time Frame: Week 1 and Week 5 ]Participants who received the trametinib oral solution completed a questionnaire to evaluate the palatability of the pediatric formulation. After taking the medication, participants provided feedback on the after-taste of the medication after the medication was swallowed, rating their experience as very good, good, neither good nor bad, bad or very bad. The ratings of very good, good, and neither good nor bad were grouped together for reporting purposes.
- HGG and LGG Cohort: Palatability of Dabrafenib Oral Suspension Based on the Palatability Questionnaire Item: Immediate Reaction Once the Medication Was Placed Into the Mouth [ Time Frame: Week 1 and Week 5 ]Participants who received the dabrafenib dispersible tablets for oral suspension completed a questionnaire to evaluate the palatability of the pediatric formulation. After taking the medication, participants provided feedback on the immediate reaction once the medication was placed into their mouth, rating their experience as very good, good, neither good nor bad, bad or very bad. The ratings of very good, good, and neither good nor bad were grouped together for reporting purposes.
- HGG and LGG Cohort: Palatability of Trametinib Oral Solution Based on the Palatability Assessment: Immediate Reaction Once the Medication Was Placed Into the Mouth [ Time Frame: Week 1 and Week 5 ]Participants who received the trametinib oral solution completed a questionnaire to evaluate the palatability of the pediatric formulation. After taking the medication, participants provided feedback on the immediate reaction once the medication was placed into their mouth, rating their experience as very good, good, neither good nor bad, bad or very bad. The ratings of very good, good, and neither good nor bad were grouped together for reporting purposes.
- HGG and LGG Cohort: Palatability of Dabrafenib Oral Suspension Based on the Palatability Questionnaire Item: Remaining After-taste Once Rinsing the Mouth With Water [ Time Frame: Week 1 and Week 5 ]Participants who received the dabrafenib dispersible tablets for oral suspension completed a questionnaire to evaluate the palatability of the pediatric formulation. After taking the medication, participants provided feedback on the after-taste of the medication after rinsing with water, rating their experience as very good, good, neither good nor bad, bad or very bad. The ratings of very good, good, and neither good nor bad were grouped together for reporting purposes.
- HGG and LGG Cohort: Palatability of Trametinib Oral Solution Based on the Palatability Assessment: Remaining After-taste Once Rinsing the Mouth With Water [ Time Frame: Week 1 and Week 5 ]Participants who received the trametinib oral solution completed a questionnaire to evaluate the palatability of the pediatric formulation. After taking the medication, participants provided feedback on the after-taste of the medication after rinsing with water, rating their experience as very good, good, neither good nor bad, bad or very bad. The ratings of very good, good, and neither good nor bad were grouped together for reporting purposes.
- LGG Cohort: PROMIS Parent Proxy Global Health 7+2 Scores- Global Health Score [ Time Frame: Baseline, and Day 1 of Week 5, 8, 16, 24, 32, 49, 48 and 56, and thereafter every 16 weeks until end of treatment (EOT), EOT, and every 16 weeks in the post-treatment efficacy follow-up phase until disease progression (assessed up to 4.6 years) ]
The PROMIS Parent Proxy Global Health 7+2 was used to evaluate the quality of life of participants. The questionnaire included 7 items measuring the global health of the patient. 4 items used a 5-level Likert scale with 1=poor and 5=excellent; 1 item used a 5-level Likert scale with 1=never and 5=always; and 2 items used a 5-level Likert scale with 1=never and 5=almost always. The total raw global health score, ranging from 7 to 35, was computed by summing item values, with higher scores indicating better overall well-being. Raw scores were then transformed into T-scores, standardized with a mean of 50 and a standard deviation of 10. Higher T-scores reflected better global health status.
Participants who discontinued treatment for reasons other than disease progression entered the post-treatment efficacy follow-up phase, where the questionnaire was performed every 16 weeks until disease progression, withdrawal of consent by patient or a parental/legal guardian, or lost to follow-up.
- LGG Cohort: PROMIS Parent Proxy Global Health 7+2 Scores- Pain Score [ Time Frame: Baseline, and Day 1 of Week 5, 8, 16, 24, 32, 49, 48 and 56, and thereafter every 16 weeks until end of treatment (EOT), EOT, and every 16 weeks in the post-treatment efficacy follow-up phase until disease progression (assessed up to 4.6 years) ]
The PROMIS Parent Proxy Global Health 7+2 was used to evaluate the quality of life of participants. The questionnaire included 1 item measuring the pain of the participants. Pain item used a 5-level Likert scale with 1= never and 5= almost always, higher scores indicate worsening pain. Raw scores were then converted into T-scores, standardized with a mean of 50 and a standard deviation of 10. Higher T-scores indicated more severe pain experiences.
Participants who discontinued treatment for reasons other than disease progression entered the post-treatment efficacy follow-up phase, where the PROMIS Parent Proxy Global 7+2 Health questionnaire was performed every 16 weeks until disease progression, withdrawal of consent by patient or a parental/legal guardian, or lost to follow-up.
- LGG Cohort: PROMIS Parent Proxy Global Health 7+2 Scores- Fatigue Score [ Time Frame: Baseline, and Day 1 of Week 5, 8, 16, 24, 32, 49, 48 and 56, and thereafter every 16 weeks until end of treatment (EOT), EOT, and every 16 weeks in the post-treatment efficacy follow-up phase until disease progression (assessed up to 4.6 years) ]
The PROMIS Parent Proxy Global Health 7+2 was used to evaluate the quality of life of participants. The questionnaire included 1 item measuring the fatigue interference of the participants. Fatigue item used a 5-level Likert scale with 1= never and 5= almost always, higher scores indicate worsening fatigue. Raw scores were then converted into T-scores, standardized with a mean of 50 and a standard deviation of 10. Higher T-scores indicated a greater level of reported fatigue.
Participants who discontinued treatment for reasons other than disease progression entered the post-treatment efficacy follow-up phase, where the PROMIS Parent Proxy Global 7+2 Health questionnaire was performed every 16 weeks until disease progression, withdrawal of consent by patient or a parental/legal guardian, or lost to follow-up.
- LGG Cohort: Overall Response Rate (ORR) by Central Independent Assessment Using RANO Criteria (Longer Follow-up Time) [ Time Frame: Up to approx 4.2 years ]Percentage of participants with a best overall confirmed CR or PR as assessed per RANO criteria by central independent assessment. The 95% CIs were computed using two-sided exact binomial method. CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses. PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically. This analysis was conducted at the end of the trial (after the primary endpoint analysis cut-off date) and includes a longer follow-up time
- HGG Cohort: Overall Response Rate (ORR) by Central Independent Assessment Using RANO Criteria (Longer Follow-up Time) [ Time Frame: Up to approx 4.8 years ]Percentage of participants with a best overall confirmed CR or PR as assessed per RANO criteria by central independent assessment. The 95% CIs were computed using two-sided exact binomial method. CR: Complete disappearance of all enhancing measurable and nonmeasurable disease sustained for at least 4 weeks; no new lesions; and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be off steroids or only on physiologic replacement doses. PR: ≥ 50% reduction, compared to baseline, in the sum of products of the perpendicular diameters for all measurable lesions for at least 4 weeks, no progression of nonmeasureable disease, no new lesions, and stable or improved nonenhancing (T2/FLAIR) lesions. Patient must be on a corticosteroid dose not greater than the dose at the time of baseline scan and be stable or improving clinically. This analysis was conducted at the end of the trial (after the primary endpoint analysis cut-off date) and includes a longer follow-up time
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
| Ages Eligible for Study: | 12 Months to 17 Years (Child) |
| Sexes Eligible for Study: | All |
| Accepts Healthy Volunteers: | No |
Key Inclusion Criteria:
- Diagnosis of BRAF V600 mutant High Grade glioma that had relapsed, progressed or failed to respond to frontline therapy
- Diagnosis of BRAF V600 mutant Low Grade glioma with progressive disease following surgical excision, or non-surgical candidates with necessity to begin first systemic treatment because of a risk of neurological impairment with progression.
- Confirmed measurable disease
Key Exclusion Criteria:
- Previous treatment with dabrafenib, trametinib, other RAF inhibitor, other MEK or ERK inhibitor
- HGG patient: Cancer treatment within the past 3 weeks. LGG patient: Any systemic therapy or radiotherapy prior to enrollment
- LGG patients: history of allergic reaction or contraindications to the use of carboplatin or vincristine
- Stem cell transplant within the past 3 months
- History of heart disease
- Pregnant or lactating females
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02684058
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| Study Director: | Novartis Pharmaceuticals | Novartis Pharmaceuticals |
Documents provided by Novartis ( Novartis Pharmaceuticals ):
| Responsible Party: | Novartis Pharmaceuticals |
| ClinicalTrials.gov Identifier: | NCT02684058 |
| Other Study ID Numbers: |
CDRB436G2201 2015-004015-20 ( EudraCT Number ) |
| First Posted: | February 17, 2016 Key Record Dates |
| Results First Posted: | May 19, 2023 |
| Last Update Posted: | December 13, 2023 |
| Last Verified: | November 2023 |
| Individual Participant Data (IPD) Sharing Statement: | |
| Plan to Share IPD: | Yes |
| Plan Description: | Novartis is committed to sharing with qualified external researchers, access to patient-level data and supporting clinical documents from eligible studies. These requests are reviewed and approved by an independent review panel on the basis of scientific merit. All data provided is anonymized to respect the privacy of patients who have participated in the trial in line with applicable laws and regulations. This trial data availability is according to the criteria and process described on www.clinicalstudydatarequest.com |
| Studies a U.S. FDA-regulated Drug Product: | Yes |
| Studies a U.S. FDA-regulated Device Product: | No |
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Malignant glioma BRAF mutant positive High grade glioma Low grade glioma |
Dabrafenib Trametinib Pediatrics Brain neoplasma |
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Neoplasms Glioblastoma Glioma Astrocytoma Oligodendroglioma Ganglioglioma Neurocytoma Ganglioneuroma Neoplasms, Neuroepithelial Neuroectodermal Tumors Neoplasms, Germ Cell and Embryonal Neoplasms by Histologic Type Neoplasms, Glandular and Epithelial Neoplasms, Nerve Tissue Brain Neoplasms |
Central Nervous System Neoplasms Nervous System Neoplasms Neoplasms by Site Brain Diseases Central Nervous System Diseases Nervous System Diseases Carboplatin Vincristine Trametinib Dabrafenib Antineoplastic Agents Antineoplastic Agents, Phytogenic Tubulin Modulators Antimitotic Agents Mitosis Modulators |