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Study Description

Brief Summary:

This is a pilot study that will evaluate disease status in children that have been newly diagnosed high-grade glioma with TRK fusion. The evaluation will occur after 2 cycles of the medication (Larotrectinib) have been given. The study will also evaluate the safety of larotrectinib when given with chemotherapy in your child; as well as the safety larotrectinib when given post-focal radiation therapy.

Detailed Description:

In this pilot study, we will assess the disease control rate (Continued Complete Response-CCR, Complete Response-CR, Partial Response-PR and Stable Disease-SD) as well as survical rate (overall survival- OS and progression free survival- PFS) in children with newly diagnosed HGG with TRK fusion who receive 2 cycles of larotrectinib monotherapy administered orally, twice daily, at 100 mg/m2 continuously on a 28-day cycle schedule. After 2 monotherapy cycles of larotrectinib, patients with CCR or CR will continue to receive larotrectinib maintenance therapy as monotherapy for a total of 12 cycles. Patients ≤ 48 months with PR or SD after 2 cycles of larotrectinib will go on to receive combination therapy with standard backbone chemotherapy (BABYPOG or HIT-SKK). Patients > 48 months of age (or patients ≥ 36 months of age, or patients with DIPG >18 months of age, at the discretion of the local investigator) will receive focal radiation therapy. A surgical cohort study will be explored whereby patients who have had a tumor biopsy/partial resection at their local institution and are planned to subsequently undergo definitive resection will receive 3-5 days (6-10 doses) of larotrectinib pre-surgery.

The study design of this trial requires 15 patients evaluable for disease control and for safety/ toxicity of larotrectinib as monotherapy. The surgical cohort will enroll up to 4 patients and will count towards the total 15 evaluable patients. A minimum of 6 patients will be evaluable for safety toxicity of larotrectinib in combination with standard-of-care chemotherapy or radiotherapy.

Inclusion Criteria

• Age: Patients ≤ 21 years of age (birth to 21 years of age) at the time of study enrollment will be eligible.
• Diagnosis: Patients with newly-diagnosed high-grade (HGG), including diffuse intrinsic pontine gliomas (DIPG), whose tumors are documented in a CLIA/CAP certified lab (or clinically equivalent method considered standard in non-US sites) to harbor an NTRK fusion alteration by FISH, PCR, or next generation sequencing are eligible. Patients must have had histologically verified high-grade glioma such as anaplastic astrocytoma, glioblastoma, or H3 K27-mutant diffuse midline glioma verified at a CONNECT site.

For sites that do not have CLIA-certified equivalent (certified laboratory) to assess NTRK fusion, testing will be conducted centrally at NCH. NTRK testing will be performed by NGS using targeted RNA-sequencing (Archer Solid Tumor analysis) Please submit 10 unstained sections on charged slides at 10uM thickness, or 10 scrolls cut at 10uM thickness, along with submission of an H&E slide. Formalin-fixed paraffin embedded (FFPE) tissue block and FFPE tissue scroll specimens must contain minimum of 25% tumor Snap-frozen tissue specimens are also acceptable and they must contain a minimum of 10% tumor. Please note that turn-around time for this test is up to 21 days.

• Disease Status: Patients with disseminated DIPG or HGG are eligible only if the patient is to receive chemotherapy only, i.e. no craniospinal RT is intended to be given. MRI of spine must be performed if disseminated disease is suspected clinically by the treating physicians. Patients with primary spinal tumors are eligible only if the patient is to receive either chemotherapy or focal radiation therapy, i.e. no craniospinal RT is intended to be given. Patients with leptomeningeal disease only, with no definitive identifiable primary tumor, and documented NTRK fusion, must be discussed with the Study Chair on a case-by-case basis.
• Surgical Cohort ONLY: Patients with newly-diagnosed HGG with NTRK fusions who have undergone prior biopsy and for whom further resection is indicated for a more definitive surgery at an enrolling site will be eligible to enroll onto the surgical study. DIPG patients are not eligible for the surgical cohort.
• Performance Level: Karnofsky ≥ 50% for patients > 16 years of age and Lansky ≥ 50 for patients ≤ 16 years of age (See Appendix I). Patients who are unable to walk because of paralysis, but who are up in a wheelchair, will be considered ambulatory for the purpose of assessing the performance score.
• Prior Therapy: Patients must not have received any prior anti-cancer chemotherapy. Prior use of corticosteroids are allowed (see below Exclusion Criteria)
• Organ Function Requirements: Adequate Bone Marrow Function Defined as:

Peripheral absolute neutrophil count (ANC) ≥ 1000/mm3 Platelet count ≥ 100,000/mm3 (transfusion independent, defined as not receiving platelet transfusions for at least 7 days prior to enrollment) Hemoglobin >8 g/dL (may receive transfusions) - Adequate Renal Function Defined as: Serum creatinine within normal institutional limits, or Creatinine clearance or radioisotope GFR ≥ 70ml/min/1.73 m2

- Adequate Liver Function Defined as: Total bilirubin ≤ 2.5 × institutional upper limit of normal AST(SGOT)/ALT(SGPT) ≤ 2.5 × institutional upper limit of normal

- Adequate Cardiac Function Defined as: Shortening fraction of ≥27% by echocardiogram, or Ejection fraction of ≥ 50% by gated radionuclide study.

- Adequate Pulmonary Function Defined as: Pulse oximetry > 94% on room air if there is clinical indication for determination (e.g. dyspnea at rest).

- Adequate Neurologic Function Defined as: Patients with seizure disorder may be enrolled if on anticonvulsants and well controlled. See Section 5.5.2 and Appendix III for EIAED guidelines.

- Informed Consent: All patients and/or their parents or legally authorized representatives must sign a written informed consent. Assent, when appropriate, will be obtained according to institutional guidelines.

Exclusion Criteria

• Pregnancy or Breast-Feeding: Pregnant or breast-feeding women will not be entered on this study due to unknown risks of fetal and teratogenic adverse events as seen in animal/human studies. Pregnancy tests must be obtained in girls who are post-menarchal. Males or females of reproductive potential may not participate unless they have agreed to use an effective contraceptive method.
• Concomitant Medications Investigational Drugs: Patients who have previously received or are currently receiving another investigational drug are not eligible.

Anti-cancer Agents: Patients who have previously received or are currently receiving other anti-cancer agents, including chemotherapy, immunotherapy, monoclonal antibodies, biologic or targeted therapy, are not eligible

• Infection: Patients must not have any active, uncontrolled systemic bacterial, viral or fungal infection.
• Patients who have received prior solid organ transplantation are not eligible.
• Patients must not have malabsorption syndrome or other condition affecting oral absorption.
• Patients must not be receiving any treatment with a strong cytochrome P450 3A4 (CYP3A4) inhibitor or inducer. (See Appendix III.) Strong inducers or inhibitors of CYP3A4 should be avoided from 7 days prior to enrollment to the end of the study.
• Patients who in the opinion of the investigator may not be able to comply with the safety monitoring requirements of the study are not eligible.

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Centres

Study Description

This study is conducted in two phases. The phase 1 portion of the study evaluates the safety, tolerability, pharmacokinetics (PK), recommended phase 2 dose (RP2D), and effectiveness of lurbinectedin monotherapy in pediatric participants with previously treated solid tumors. This is followed by the phase 2 portion, to further assess the effectiveness and safety in pediatric and young adult participants with recurrent/refractory Ewing sarcoma.

Inclusion Criteria

• Participant must meet the following age requirements at the time the informed consent form (ICF) (and assent form, if applicable) is signed:
  • Phase 1 Part 1: participants must be ≥ 2 to < 18 years of age.
  • Phase 1 Part 2: participants must be ≥ 2 to ≤ 30 years of age.
  • Phase 2: participants must be ≥ 2 to ≤ 30 years of age.
• Participant has a confirmed solid tumor
• The participant has a Lansky/Karnofsky performance status score of ≥ 50%.
• The participant has adequate liver function, evidenced by the following laboratory values:
  • Aspartate aminotransferase (AST), alanine aminotransferase (ALT) ≤ 2.5 × upper limit of normal (ULN).
  • Total bilirubin ≤ 1.5 × institutional ULN (with the exception of participants with Gilbert's syndrome who must have bilirubin < 3 × institutional ULN).
• The participant has adequate bone marrow function, evidenced by the following:
  • Absolute neutrophil count (ANC) ≥ 1.0 × 109/L (independent of growth factor support within 1 week of screening laboratories).
• Platelets ≥ 100 × 109/L (without platelet transfusion within previous 7 days of screening laboratories).
  • Hemoglobin ≥ 8 g/dL (note: may have been transfused).
• The participant has an adequate renal function:
  • Calculated creatinine clearance (use Cockcroft-Gault formula for participants ≥ 18 years; Schwartz equation for participants < 18 years) ≥ 60 mL/min.
• The participant has an adequate cardiac function:
  • Left ventricular ejection fraction or shortening fraction per institutional norm ≥ institutional lower level of normal.
• The participant has creatine phosphokinase ≤ 2.5 × institutional ULN.
• The participant has body weight ≥ 15 kg.
• Capable of giving signed informed consent, which includes compliance with the requirements and restrictions listed in the ICF and in this protocol.

Male participants 

• Male participants are eligible to participate if they agree to the following during the study intervention period and for at least 4 months after the last dose of study intervention:
  • Refrain from donating sperm AND
  • Be abstinent from heterosexual intercourse as their preferred and usual lifestyle (abstinent on a long-term and persistent basis) and agree to remain abstinent 
  • OR must agree to use contraception/barrier as detailed below:
    • Agree to use a male condom with female partner and use of an additional highly effective contraceptive method with a failure rate of < 1% per year when having sexual intercourse with a Woman of childbearing potential (WOCBP) who is not currently pregnant.
    • Note: male participants who are azoospermic (vasectomized or due to a medical cause) are still required to follow the protocol-specified contraception/barrier criteria.

Female participants

• A female participant is eligible to participate if she is not pregnant or breastfeeding, and one of the following conditions applies:
  • Is a Woman of nonchildbearing potential (WONCBP). OR
  • Is a WOCBP and using an acceptable contraceptive method during the study intervention period (at least 7 months after the last dose of study intervention). The investigator should evaluate the potential for contraceptive method failure (eg, noncompliance, recently initiated) in relationship to the first dose of study intervention.
  • A WOCBP must have a negative highly sensitive pregnancy test (urine or serum as required by local regulations) within 7 days before the first dose of study intervention
    • If a urine test cannot be confirmed as negative (eg, an ambiguous result), a serum pregnancy test is required. In such cases, the participant must be excluded from participation if the serum pregnancy result is positive.
  • Additional requirements for pregnancy testing during and after study intervention.
  • The investigator is responsible for review of medical history, menstrual history, and recent sexual activity to decrease the risk for inclusion of a woman with an early undetected pregnancy.

Exclusion Criteria

• Corrected QT interval (QTc) prolongation defined as a QTc ≥ 470 ms using the Bazett formula.
• Known symptomatic Central nervous system (CNS) metastases requiring steroids. Participants with previously diagnosed CNS metastases are eligible if they have completed their treatment and have recovered from the acute effects of radiation therapy or surgery prior to enrollment, have discontinued high dose steroid treatment for these metastases for at least 2 weeks, and are neurologically stable (physiologic doses of steroids and short courses of steroids for other indications are acceptable).
• Persisting toxicity related to prior therapy; however, alopecia, sensory neuropathy, hypothyroidism, and rash Grade ≤ 2 are acceptable, and other Grade ≤ 2 adverse events (AEs) not constituting a safety risk based on the investigator's judgement are acceptable.
• An uncontrolled intercurrent illness including but not limited to ongoing or active infection requiring antibiotic, antifungal, or antiviral therapy, symptomatic heart failure, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements.
• Any other major illness that, in the investigator's judgment, could substantially increase the risk associated with participation in this study.
• Any other diseases, metabolic dysfunction, physical examination finding, or clinical laboratory finding giving reasonable suspicion of a disease or condition that contraindicates the use of an investigational drug or that may affect the interpretation of the results or render the participant at high-risk for treatment complications.
• Received prior treatment with lurbinectedin or trabectedin.
• Received prior treatment with any investigational product within 4 weeks of first infusion of study intervention. Observational studies are permitted.
• Received live or live attenuated vaccines within 4 weeks of the first dose of study treatment or plans to receive live vaccines during study participation. Administration of inactive vaccines or messenger ribonucleic acid (mRNA) vaccines (for example, inactivated influenza vaccines or COVID-19 vaccines) are allowed.
• Had major surgery ≤ 4 weeks or radiation therapy ≤ 2 weeks prior to enrollment unless fully recovered. Prior palliative radiotherapy is permitted, provided it was completed at least 2 weeks prior to participant enrollment.
• Received prior allogeneic bone marrow transplantation or solid organ transplant.
• Received chemotherapy ≤ 3 weeks prior to start of study intervention.
• Hepatitis B virus (HBV) or Hepatitis C virus (HCV) infection at screening (positive HBV surface antigen or Polymerase chain reaction (PCR) test for HCV RNA if HCV antibody test is positive).
• Human immunodeficiency infection at screening (positive anti-HIV antibody).
• Has a known or suspected hypersensitivity to any of the components of the study intervention.
• The participant or parent(s)/guardian(s) is/are unable to comply with the study visit schedule and other protocol requirements, in the opinion of the investigator

Other exclusion criteria may apply

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Study Description

This is a prospective, single arm, non-randomized feasibility study to evaluate the safety, feasibility and preliminary efficacy of Blood Brain Barrier Disruption (BBBD) using the Exablate Type 2 system in pediatric patients with Diffuse Intrinsic Pontine Gliomas (DIPG) undergoing Doxorubicin chemotherapy. The study will be conducted at a single center in Canada. Patients will undergo 3 treatment cycles, approximately 4 -6 weeks apart. The study aims to establish feasibility and safety of Exablate BBBD in conjunction with Doxorubicin in the treatment of pediatric DIPG and assess preliminary efficacy in this patient population.

Inclusion Criteria

• Age between 5 and 18 years, inclusive
• Patient diagnosed with DIPG
• At least 4-week and not greater than 12 weeks from completion of radiation therapy
• Post-radiation imaging does not show evidence of necrosis/ hemorrhage or other features that contraindicate MRgFUS
• Able to attend all study visits and with life expectancy of at least 6 months
• Able and willing to give consent and/or assent or have a legal guardian who is able and willing to do so
• If on steroids, stable or decreasing dose for at least 7 days prior to study entry
• If brain surgery occurred, at least 14 days passed since last brain surgery and the patient is fully recovered and neurologically stable

Exclusion Criteria

• Evidence of cranial or systemic infection
• Known life-threatening systemic disease
• Previous treatment with complete cumulative doses of Doxorubicin, daunorubicin, idarubicin, and/or other anthracyclines and anthracenediones
• Contraindication to Doxorubicin. - Known sensitivity to DEFINITY® ultrasound contrast agent or known hypersensitivity to perflutren microsphere or its components, e.g., polyethylene glycol. - Known sensitivity to gadolinium-based contrast agents
• Active seizure disorder or epilepsy (seizures despite medical treatment) for a minimum of 4 weeks prior to first cycle/Exablate BBBD procedure captured by history
• Patients with positive HIV status. - Immunosuppression (corticosteroids to prevent/treat brain edema are permitted)
• Cerebral or systemic vasculopathy, including intracranial thrombosis, vascular malformation, cerebral aneurysm, or vasculitis
• Hypertension per age
• History of a bleeding disorder, coagulopathy or with a history of spontaneous tumour hemorrhage
• Anti-coagulant therapy, or medications known to increase risk of hemorrhage, (e.g., ASA, non-steroidal anti-inflammatory drugs [NSAIDs], statins) within washout period prior to treatment
• Patient receiving bevacizumab (Avastin) therapy or increasing doses of steroids
• Symptoms and signs of increased intracranial pressure
• Previous participation in other chemotherapy, molecularly targeted therapy or immunotherapy treatment-related phase 1 or 2 trials
• Tumor not visible on any pre-therapy or post-radiation imaging

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Study Description

Brief Summary:

This partially randomized phase II/III trial studies how well, in combination with surgery, cisplatin and combination chemotherapy works in treating children and young adults with hepatoblastoma or hepatocellular carcinoma. Drugs used in chemotherapy, such as cisplatin, doxorubicin, fluorouracil, vincristine sulfate, carboplatin, etoposide, irinotecan, sorafenib, gemcitabine and oxaliplatin, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving combination chemotherapy may kill more tumor cells than one type of chemotherapy alone.

Detailed Description:

PRIMARY OBJECTIVES:

I. To reduce therapy associated toxicity for patients with non-metastatic hepatoblastoma (HB) and hepatocellular carcinoma (HCC) without adversely affecting long term outcomes.

II. To determine the event-free survival (EFS) in patients with HB whose tumor is completely resected at diagnosis and either receive no adjuvant chemotherapy (completely resected well differentiated fetal [WDF] histology HB) or 2 cycles of standard dose cisplatin monotherapy (completely resected non-well differentiated fetal histology HB - 100 mg/m^2/cycle given 3 weeks apart). (Group A) III. To demonstrate that 4 to 6 cycles of interval compressed lower dose cisplatin monotherapy (80 mg/m^2/cycle; 320-480 mg/m^2 total) is adequate for low risk HB. (Group B) IIIa. In patients who are resected after 2 cycles of cisplatin monotherapy, to compare EFS following a randomized comparison of 2 versus 4 post-operative cycles of cisplatin monotherapy. (Group B) IIIb. In patients whose tumors are deemed unresectable after 2 cycles of cisplatin monotherapy, to determine the proportion of tumors rendered completely resectable by an additional 2 or 4 cycles of chemotherapy. (Group B) IV. To compare in a randomized fashion, EFS in patients with intermediate risk HB treated with 6 cycles of cisplatin/5-fluorouracil/vincristine/doxorubicin (C5VD) chemotherapy versus 6 cycles of interval compressed cisplatin monotherapy (100 mg/m^2/dose). (Group C) V. To determine the EFS in patients with HCC whose tumor is completely resected at diagnosis who receive no adjuvant chemotherapy (completely resected HCC arising in the context of underlying liver disease) or 4 cycles of cisplatin/doxorubicin (PLADO) (completely resected de novo HCC). (Group E) VI. To improve the EFS of patients with high risk HB by treating them with interval compressed cisplatin and doxorubicin based induction regimen followed by response-adapted consolidation therapy. (Group D) VIa. In patients whose metastatic disease resolves with the administration of Societe Internationale d'Oncologie Pediatrique (SIOPEL) 4 Induction therapy, to determine if the promising pilot results observed in SIOPEL 4 can be validated in a large international study. (Group D1) VIb. In patients whose metastatic disease does not resolve with the administration of SIOPEL 4 Induction therapy, to determine in a randomized comparison which post induction treatment (irinotecan and vincristine sulfate [vincristine] alternating with carboplatin and doxorubicin or carboplatin and etoposide alternating with carboplatin and doxorubicin) results in superior outcomes. (Group D Arm CE & Arm VI) VII. In patients with unresectable/metastatic HCC at diagnosis, to determine whether the addition of gemcitabine and oxaliplatin (GEMOX + sorafenib) to a cisplatin, doxorubicin and sorafenib backbone improves chemotherapy response, resectability and survival. (Group F)

EXPLORATORY OBJECTIVES:

I. To determine if the Childhood Hepatic tumor International Consortium (CHIC) hepatoblastoma risk stratification analysis of very low risk (Group A), low risk (Group B), intermediate risk (Group C) and high risk (Group D) groups stratifies patients allowing appropriate utilization of varying intensity chemotherapy regimens and surgical resection strategies.

II. To define the prognostic relevance of a positive microscopic margin in Group A-D resected HB specimens.

III. To define the frequency of histologically detectable multifocal lesions in liver explants and resected specimens in which multifocal disease was detected at diagnosis and disappeared on cross sectional imaging following treatment with chemotherapy.

IV. To define the prognostic relevance in HB of a 'small cell undifferentiated' tumor component and percentage of tumor necrosis in post chemotherapy specimens.

V. To determine the prognostic impact on EFS and overall survival (OS) of biopsy technique in liver tumors unresectable at diagnosis.

VI. To determine the 3-year EFS and OS of HB patients who undergo liver transplantation vs extreme resection in Group C and D patients.

VII. To determine the 3-year EFS and OS of Group D patients who undergo pulmonary metastasectomy.

VIII. To determine the 3-year EFS and OS of patients who undergo liver transplantation for HCC.

IX. To determine the frequency of relapse in non-metastatic HCC in children treated by liver transplantation versus conventional resection.

X. To determine the concordance of Pretreatment Extent of Disease (PRETEXT) and Post-treatment Extent of disease (POSTTEXT) based surgical guidelines and the surgical intervention performed.

XI. To collect for future analysis, HB and HCC tumor specimens that can be molecularly characterized to validate newly identified molecular and immunohistochemical biomarkers correlating with known clinical prognostic factors and outcome.

XII. To evaluate the hepatoblastoma molecular risk-predictive model (HB-MRP) to risk stratify hepatoblastoma patients in the context of the current AHEP1531 trial.

XIII. To collect for future analysis samples to assess the pharmacogenomics (PG) related to cisplatin therapy in pediatric and adolescent liver tumor patients and correlate PG with Boston Grading Scale for ototoxicity.

XIV. To collect for future analysis samples such that novel biomarkers of renal toxicity (urine neutrophil gelatinase-associated lipocalin [NGAL], cystatin C and Kim1) from cisplatin therapy can be correlated with pharmacogenomics, other associated toxicities, and outcomes.

XV. To determine which system (Children's Oncology Group [COG] PRETEXT, SIOPEL PRETEXT, or a new hybrid definition of PRETEXT) of the annotation factors for V, P, E, F and R provides the best prognostic information for determining response to chemotherapy, guiding risk based therapy, predicting surgical resectability, and EFS.

XVI. To determine the concordance between institutional and expert panel review assessment of PRETEXT and POSTTEXT stage in an international cooperative group setting.

OUTLINE:

GROUP A (VERY LOW RISK HB): Patients are assigned to 1 of 2 groups.

GROUP A1 (WDF): Patients undergo observation.

GROUP A2 (NON-WDF): Patients receive cisplatin (CDDP) intravenously (IV) over 6 hours on day 1 following surgery. Treatment repeats every 21 days for up to 2 cycles in the absence of disease progression or unacceptable toxicity.

GROUP B (LOW RISK HB): Patients receive cisplatin IV over 6 hours on day 1. Treatment repeats every 14 days for up to 2 cycles in the absence of disease progression or unacceptable toxicity. Patients are then assigned to 1 of 2 groups

GROUP B1 (RESECTABLE): Patients receive 2 cycles of cisplatin, undergo surgery, then are randomized to 1 of 2 arms (2 vs 4 additional cycles of cisplatin).

GROUP B1 ARM 4-CDDP: Patients receive cisplatin IV over 6 hours on day 1. Treatment repeats every 14 days for up to 4 total cycles (2 pre-surgery, 2 post-surgery) in the absence of disease progression or unacceptable toxicity.

GROUP B1 ARM 6-CDDP: Patients receive cisplatin IV over 6 hours on day 1. Treatment repeats every 14 days for up to 6 total cycles(2 pre-surgery, 4 post-surgery) in the absence of disease progression or unacceptable toxicity.

GROUP B2 (UNRESECTABLE): Patients receive cisplatin IV over 6 hours on day 1. Treatment repeats every 14 days for up to 6 total cycles (4 pre-surgery, 2 post-surgery). Patients with resectable tumors undergo surgery, then all patients continue with 2 additional cycles of cisplatin.

GROUP C (INTERMEDIATE RISK HB): Patients are randomized to 1 of 2 arms.

GROUP C ARM CDDP: Patients receive cisplatin IV over 6 hours on day 1. Treatment repeats every 14 days for up to 6 cycles in the absence of disease progression or unacceptable toxicity. Patients undergo surgery after cycle 2 or 4.

GROUP C ARM C5VD: Patients receive cisplatin IV over 6 hours on day 1, 5-fluorouracil IV over 1-15 minutes, vincristine sulfate IV over 1 minute on days 1, 8, and 15 and doxorubicin IV over 1-15 minutes on days 1 and 2. Treatment repeats every 21 days for up to 6 cycles in the absence of disease progression or unacceptable toxicity. Patients undergo surgery after cycle 2 or 4.

GROUP D (HIGH RISK HB): SIOPEL-4 IV INDUCTION: Patients receive cisplatin IV over 6 hours on days 1, 8, and 15 (for cycles 1 and 2) and days 1 and 8 (for cycle 3) and doxorubicin IV over 1-15 minutes on days 8 and 9 (for cycles 1 and 2) and days 1 and 2 (for cycle 3). Cycles 1 and 2 are 28 days; cycle 3 is 21 days. Patients are then assigned to 1 of 2 arms.

GROUP D1: CONSOLIDATION THERAPY: Patients with lung complete remission (either with chemotherapy and/or surgery) receive carboplatin IV over 1 hour on day 1 and doxorubicin IV over 1-15 minutes on days 1 and 2. Treatment repeats every 21 days for 3 cycles in the absence of disease progression or unacceptable toxicity.

GROUP D2: Patients with residual metastatic disease are randomized to 1 of 2 arms.

GROUP D2 ARM CE: Patients receive carboplatin IV over 1 hour on days 1 and 2, doxorubicin IV over 1-15 minutes on days 1 and 2 during cycles 1, 3 and 5, and carboplatin IV over 1 hour and etoposide IV over 2 hours on day 1 and 2 of cycles 2, 4 and 6. Treatments repeat every 21 days for 6 cycles in the absence of disease progression or unacceptable toxicity.

GROUP D2 ARM VI: Patients receive carboplatin IV over 1 hour on days 1 and 2 and doxorubicin IV over 1-15 minutes on days 1 and 2 during cycles 1, 3 and 5. Patients also receive vincristine sulfate IV over 1 minute on days 1 and 8 and irinotecan IV over 60-90 minutes once daily (QD) on days 1 to 5 of cycles 2, 4 and 6. Treatments repeat every 21 days for 6 cycles in the absence of disease progression or unacceptable toxicity.

GROUP E (RESECTED HCC): Patients are assigned to 1 of 2 groups.

GROUP E1: Patients with HCC secondary to underlying hepatic disease undergo observation only.

GROUP E2 (PLADO): Patients with de novo HCC receive cisplatin IV over 6 hours on day 1 and doxorubicin IV over 1-15 minutes on days 1 and 2 following surgery. Treatments repeat every 21 days for 4 cycles in the absence of disease progression or unacceptable toxicity.

GROUP F (UNRESECTED AND/OR METASTATIC HCC): Patients are randomized to 1 of 2 arms.

GROUP F ARM 1 (PLADO): Patients receive cisplatin IV over 6 hours on day 1, doxorubicin IV over 1-15 minutes on days 1 and 2 and sorafenib orally (PO) twice daily (BID) on days 3-21. Treatments repeat every 21 days for up to 3 cycles in the absence of disease progression or unacceptable toxicity. Patients may undergo surgery, if tumors are resectable, or receive an additional 3 cycles of the treatment.

GROUP F ARM 2 (P/GEMOX): Patients receive cisplatin IV over 6 hours on day 1, doxorubicin IV over 1-15 minutes on days 1 and 2 and sorafenib PO BID on days 3-14 of cycles 1 and 3. Patients also receive gemcitabine IV over 90 minutes on day 1, oxaliplatin IV over 2 hours on day 1 and sorafenib PO on days 1-14 of cycles 2 and 4. Patients may undergo surgery, if tumors are resectable, or receive an additional 4 cycles of the treatment.

After completion of study treatment, patients are followed up for a minimum of 2 years.

Inclusion Criteria

• Patients in Group F must have a body surface area (BSA) >= 0.6 m^2
• Patients must have a performance status corresponding to Eastern Cooperative Oncology Group (ECOG) scores of 0, 1, or 2; use Karnofsky for patients > 16 years of age and Lansky for patients =< 16 years of age; patients who are unable to walk because of paralysis, but who are up in a wheelchair, will be considered ambulatory for the purpose of assessing the performance score
• Patients must be newly diagnosed with histologically-proven primary pediatric hepatic malignancies including hepatoblastoma or hepatocellular carcinoma, except as noted below; patients with a diagnosis of hepatocellular neoplasm, not otherwise specified, should be classified and treated per hepatoblastoma treatment arms; note that rapid central pathology review is required in some cases; please note: all patients with histology as assessed by the institutional pathologist consistent with pure small cell undifferentiated (SCU) HB will be required to have testing for INI1/SMARCB1 by immunohistochemistry (IHC) according to the practices at the institution
• Patients with histology consistent with pure SCU must have positive INI1/SMARCB1 staining

• For all Group A patients, WDF status as determined by rapid review will be used to further stratify patients to Group A1 or A2

  • For Groups B, C and D, rapid review is required if patients are either >= 8 years of age or have an alphafetoprotein (AFP) =< 100 at diagnosis
  • For all Groups E and F patients, rapid central pathology review is required

• In emergency situations when a patient meets all other eligibility criteria and has had baseline required observations, but is too ill to undergo a biopsy safely, the patient may be enrolled without a biopsy

  • Clinical situations in which emergent treatment may be indicated include, but are not limited to, the following circumstances:

    • Anatomic or mechanical compromise of critical organ function by tumor (e.g., respiratory distress/failure, abdominal compartment syndrome, urinary obstruction, etc.)
    • Uncorrectable coagulopathy

  • For a patient to maintain eligibility for AHEP1531 when emergent treatment is given, the following must occur:

    • The patient must have a clinical diagnosis of hepatoblastoma, including an elevated alphafetoprotein (AFP), and must meet all AHEP1531 eligibility criteria at the time of emergent treatment
    • Patient must be enrolled on AHEP1531 prior to initiating protocol therapy; a patient will be ineligible if any chemotherapy is administered prior to AHEP1531 enrollment
  • Note: If the patient receives AHEP1531 chemotherapy emergently PRIOR to undergoing a diagnostic biopsy, pathologic review of material obtained in the future during either biopsy or surgical resection must either confirm the diagnosis of hepatoblastoma or not reveal another pathological diagnosis to be included in the analysis of the study aims
• Patients may have had surgical resection of the hepatic malignancy prior to enrollment; all other anti-cancer therapy for the current liver lesion is prohibited

• Creatinine clearance or radioisotope glomerular filtration rate (GFR) >= 60 mL/min/1.73 m^2 or

  • A serum creatinine based on age/gender as follows:

    • Age: maximum serum creatinine (mg/dL)
    • 1 month to < 6 months: 0.4 (male and female)
    • 6 months to < 1 year: 0.5 (male and female)
    • 1 to < 2 years: 06 (male and female)
    • 2 to < 6 years: 0.8 (male and female)
    • 6 to < 10 years: 1 (male and female)
    • 10 to < 13 years: 1.2 (male and female)
    • 13 to < 16 years: 1.5 (male), 1.4 (female)
    • >= 16 years: 1.7 (male), 1.4 (female)
• Total bilirubin =< 5 x upper limit of normal (ULN) for age
• Aspartate aminotransferase (AST) (serum glutamic-oxaloacetic transaminase [SGOT])/alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase [SGPT]) < 10 x upper limit of normal (ULN) for age
• Shortening fraction of >= 28% by echocardiogram (for patients on doxorubicin-containing regimens [Groups C, D, E2, and F] assessed within 8 weeks prior to study enrollment) or
• Ejection fraction of >= 47% by echocardiogram or radionuclide angiogram (for patients on doxorubicin-containing regimens [Groups C, D, E2, and F] assessed within 8 weeks prior to study enrollment)
• Group F patients only: QT/corrected QT (QTc) interval =< 450 milliseconds for males and =< 470 milliseconds for females (assessed within 8 weeks prior to study enrollment)
• Normal pulmonary function tests (including diffusion capacity of the lung for carbon monoxide [DLCO]) if there is clinical indication for determination (e.g. dyspnea at rest, known requirement for supplemental oxygen) (for patients receiving chemotherapy [Groups A, B, C, D, E2, F]); for patients who do not have respiratory symptoms or requirement for supplemental oxygen, pulmonary function tests (PFTs) are NOT required
• All patients and/or their parents or legal guardians must sign a written informed consent
• All institutional, Food and Drug Administration (FDA), and National Cancer Institute (NCI) requirements for human studies must be met

Exclusion Criteria

• Prior chemotherapy or tumor directed therapy (i.e. radiation therapy, biologic agents, local therapy (embolization, radiofrequency ablation, and laser); therefore, patients with a pre-disposition syndrome who have a prior malignancy are not eligible
• Patients who are currently receiving another investigational drug
• Patients who are currently receiving other anticancer agents
• Patients with uncontrolled infection
• Patients who previously received a solid organ transplant, other than those who previously received an orthotopic liver transplantation (OLT) as primary treatment of their hepatocellular carcinoma
• Patients with hypersensitivity to any drugs on their expected treatment arm
• Group C: Patients who have known deficiency of dihydropyrimidine dehydrogenase (DPD)

• Group D:

  • Patients with chronic inflammatory bowel disease and/or bowel obstruction
  • Patients with concomitant use of St. John's wort, which cannot be stopped prior to the start of trial treatment

• Group F:

  • Patients with peripheral sensitive neuropathy with functional impairment
  • Patients with a personal or family history of congenital long QT syndrome

• These criteria apply ONLY to patients who may receive chemotherapy (all groups other than Group E1):

  • Female patients who are pregnant since fetal toxicities and teratogenic effects have been noted for several of the study drugs; a pregnancy test is required for female patients of childbearing potential
  • Lactating females who plan to breastfeed their infants

  • Sexually active patients of reproductive potential who have not agreed to use an effective contraceptive method for the duration of their study participation

    • Note for Group F: patients of childbearing potential should use effective birth control during treatment with sorafenib and for at least 2 weeks after stopping treatment

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Centres

Study Description

This is a single-arm, non-randomized study of re-irradiation of diffuse intrinsic pontine glioma (DIPG)

Study therapy will consist of radiation therapy (RT) given over 17 treatment days (for 30.6 Gy in fractions of 1.8 Gy) or 20 treatment days (for 36 Gy in 1.8 Gy fractions), depending on the time from completion of the first course of RT. Treatment days will generally be weekdays, not including statutory holidays.

Inclusion Criteria

All of these criteria must be met for a patient to be eligible for this study:

1. The patient is 17 years of age or younger at the time of first or second relapse or progression of DIPG
2. The patient has no evidence of metastases on cranial or spinal MR imaging
3. The patient has received RT in the past, given to a total cumulative dose of <60 Gy; prior radiation using opposed lateral fields, conformal 3-D fields, IMRT or using protons is acceptable
4. At least 180 days have elapsed from the last day of primary RT for DIPG
5. The patient has recovered from all acute and subacute toxicities of prior RT and of chemotherapy, if chemotherapy was utilized in the past
6. The patient has been off all anti-tumour therapy for at least 14 days
7. The patient has a Lansky score of 40% or higher
8. The patient has a life expectancy anticipated to be at least 8 weeks with treatment using re-irradiation, with or without dexamethasone
9. The patient has no uncontrolled medical condition (e.g., seizures, diabetes, infection) that would interfere with the delivery of rRT
10. The patient agrees to not enroll on any other clinical trial of an anti-tumour intervention
11. The patient agrees to report and have recorded the use of all medications taken during ReRAD therapy, from the time of diagnosis of progression or recurrence, then through and after completion of, ReRAD therapy; this includes the use of complementary, alternative and dietary therapies
12. The patient is treated at a site where the study is approved by the local ethics board
13. Males and females of child-bearing potential must agree to use effective birth control measures during rRT
14. Consent, and, if applicable, assent, has been obtained according to institutional standards

Exclusion Criteria

If the patient fulfills any of these criteria, then he or she will not be eligible for the study:

1. Females who are pregnant, due to risks from rRT on the developing fetus.
2. Any patient with a condition that prohibits the planned delivery of rRT as prescribed in this study.
3. Patients who are receiving any other clinical trial of an anti-tumour intervention

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Centres

Study Description

Brief Summary:

This is an open-label, multi-center Phase 1/2 study of oral LOXO-292 in pediatric participants with an activating rearranged during transfection (RET) alteration and an advanced solid or primary CNS tumor.

Detailed Description:

This study includes 2 parts: phase 1 (dose escalation) and phase 2 (dose expansion). In phase 1, participants will be enrolled using a rolling 6 dose escalation scheme. The starting dose of LOXO-292 is equivalent to the adult recommended phase 2 dose of 160 milligrams (mg) twice a day (BID). Once the maximum tolerated dose (MTD) and/or recommended phase 2 dose (RP2D) is identified, participants will be enrolled to one of four phase 2 dose expansion cohorts depending on tumor histology and tumor genotype. Cycle length will be 28 days.

Inclusion Criteria

• Advanced or metastatic solid or primary CNS tumor which has failed standard of care therapies
• Evidence of an activating RET gene alteration in the tumor and/or blood
• Measurable or non-measurable disease
• Karnofsky (participants 16 years and older) or Lansky (participants younger than 16) performance score of at least 50
• Participant with primary CNS tumors or cerebral metastases must be neurologically stable for 7 days prior and must not have required increasing doses of steroids within the last 7 days
• Adequate hematologic, hepatic and renal function.
• Ability to receive study drug therapy orally or via gastric access
• Willingness of men and women of reproductive potential to observe conventional and effective birth control

Exclusion Criteria

• Major surgery within two weeks prior to planned start of LOXO-292
• Clinically significant, uncontrolled cardiac, cardiovascular disease or history of myocardial infarction within 6 months prior to planned start of LOXO-292
• Active uncontrolled systemic bacterial, viral, fungal or parasitic infection
• Clinically significant active malabsorption syndrome
• Pregnancy or lactation
• Uncontrolled symptomatic hyperthyroidism or hypothyroidism (i.e. the participant required a modification to current thyroid medication in the 7 days before start of LOXO-292)
• Uncontrolled symptomatic hypercalcemia or hypocalcemia
• Known hypersensitivity to any of the components of the investigational agent, LOXO-292 or Ora-Sweet® SF and OraPlus®, for participants who will receive LOXO-292 suspension
• Prior treatment with a selective RET inhibitor(s) (including investigational selective RET inhibitor[s])

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Centres

Study Description

This is an open-label, Phase 1/2 multicenter dose escalation study in pediatric patients with relapsed or refractory extracranial solid tumors (Phase 1), with additional expansion cohorts (Phase 2) in patients with primary brain tumors harboring NTRK1/2/3 or ROS1 gene fusions, and extracranial solid tumors harboring NTRK1/2/3 or ROS1 gene fusions.

Inclusion Criteria

1. Disease status:

   • Phase 1 portion (closed): Participants must have measurable or evaluable disease, as defined by RECIST v1.1

   • Phase 2 portion:

     • Part B: Participants must have measurable or evaluable disease, as defined by RANO
     • Part C (closed): Participants must have measurable or evaluable disease, as defined by RECIST v1.1 ± Curie Scale
     • Part D: Participants must have measurable or evaluable disease, as defined by RECIST v1.1
     • Part E (closed): Participants must have measurable or evaluable disease, as defined by RECIST v1.1 ± Curie Scale or RANO

2. Tumor type:

   • Phase 1 portion:

     * Part A: Relapsed or refractory extracranial solid tumors

   • Phase 2 portion

     • Part B: Primary brain tumors with NTRK1/2/3 or ROS1 gene fusions; gene fusions are defined as those predicted to translate into a fusion protein with a functional TRKA/B/C or ROS1 kinase domain, without a concomitant second oncodriver as determined by a nucleic acid-based diagnostic testing method
     • Part D: Extracranial solid tumors (including NB) with NTRK1/2/3 or ROS1 gene fusions; gene fusions are defined as those predicted to translate into a fusion protein with a functional TRKA/B/C or ROS1 kinase domain, without a concomitant second oncodriver as determined by a nucleic acid-based diagnostic testing method
3. Histologic/molecular diagnosis of malignancy at diagnosis or the time of relapse
4. Archival tumor tissue from diagnosis or, preferably, at relapse
5. Performance status: Lansky or Karnofsky score ≥ 60% and minimum life expectancy of at least 4 weeks
6. Prior therapy: Participants must have a disease that is locally advanced, metastatic, or where surgical resection is likely to result in severe morbidity, and who have no satisfactory treatment options for solid tumors and primary CNS tumors that are neurotrophic tyrosine receptor kinase (NTRK) or ROS1 fusion-positive
7. Participants must have recovered from the acute toxic effects of all prior chemotherapy, immunotherapy, or radiotherapy prior to enrollment
8. Adequate organ and neurologic function
9. Females of childbearing potential must have a negative serum pregnancy test during screening and be neither breastfeeding nor intending to become pregnant during study participation. Agreement to remain abstinent or use use combined contraceptive methods prior to study entry, for the duration of study participation and in the following 90 days after discontinuation of study treatment.
10. For male participants with a female partner of childbearing potential or a pregnant female partner: Agreement to remain abstinent or use a condom during the treatment period and for at least 3 months after the last dose of study drug

Exclusion Criteria

1. Receiving other experimental therapy
2. Known congenital long QT syndrome
3. History of recent (3 months) symptomatic congestive heart failure or ejection fraction ≤50% at screening
4. Known active infections
5. Familial or personal history of congenital bone disorders, bone metabolism alterations or osteopenia
6. Receiving Enzyme Inducing Antiepileptic Drugs (EIAEDs) within 14 days of first dose.
7. Prior treatment with approved or investigational TRK or ROS1 inhibitors
8. Known hypersensitivity to entrectinib or any of the other excipients of the investigational medicinal product
9. Patients with NB with bone marrow space-only disease
10. Incomplete recovery from acute effects of any surgery prior to treatment.
11. Active gastrointestinal disease or other malabsorption syndromes that would impact drug absorption.
12. Other severe acute or chronic medical or psychiatric condition or lab abnormality that may increase the risk associated with study participation, drug administration or may interfere with the interpretation of study results.

Publications

Doebele RC, Drilon A, Paz-Ares L, Siena S, Shaw AT, Farago AF, Blakely CM, Seto T, Cho BC, Tosi D, Besse B, Chawla SP, Bazhenova L, Krauss JC, Chae YK, Barve M, Garrido-Laguna I, Liu SV, Conkling P, John T, Fakih M, Sigal D, Loong HH, Buchschacher GL Jr, Garrido P, Nieva J, Steuer C, Overbeck TR, Bowles DW, Fox E, Riehl T, Chow-Maneval E, Simmons B, Cui N, Johnson A, Eng S, Wilson TR, Demetri GD; trial investigators. Entrectinib in patients with advanced or metastatic NTRK fusion-positive solid tumours: integrated analysis of three phase 1-2 trials. Lancet Oncol. 2020 Feb;21(2):271-282. doi: 10.1016/S1470-2045(19)30691-6. Epub 2019 Dec 11. Erratum in: Lancet Oncol. 2020 Feb;21(2):e70. Lancet Oncol. 2020 Jul;21(7):e341. Lancet Oncol. 2020 Aug;21(8):e372.

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Centres

Study Description

This is a phase 1/2, open-label, interventional clinical trial that will study the response rate of pediatric glioma and plexiform neurofibroma (PN) to oral administration of trametinib. Patients meeting all inclusion criteria for a given study group will receive the study medication at a daily dose of 0.025 mg/kg up to a total of 18 cycles, in 28-day cycles. A total of 150 patients will be recruited as part of this clinical study.

Patients aged between 1 month (corrected age) and 25 years old will be eligible, in order to include a maximum of patients affected by low-grade glioma (LGG) and PN.

This study includes four groups:

All patients except patients with PN must have failed at least one line of treatment.

The study will also explore the molecular mechanisms behind tumor development, progression and resistance to treatment. Patients with neurofibromatosis type 1 (NF1) and LGG, NF1 patients with PN, patients with LGG with a B-Raf Serine/Threonine-protein Kinase/Proto-oncogene Encoding B-Raf (BRAF) fusion and patients with glioma of any grade with activation of the Mitogen-activated Protein Kinase/Extracellular Signal-regulated Kinases (MAPK/ERK) pathway.rmore, this study will also explore important aspects for patients with brain tumors by including assessment of quality of life and neuropsychological evaluation.

Inclusion Criteria

1. Signed written informed consent Prior to study participation, written informed consent from participants, or in the case of minors, written permission (informed consent) from parents, guardians, or legally acceptable representatives must be obtained according to local laws and regulations.
2. Assent Assent from minor participants should be obtained per local laws and regulations and should be documented in accordance with local requirements.
3. Study activities compliance. Participants must be willing and able to comply with scheduled visits, treatment schedule, laboratory testing, and other requirements of the study, including disease assessment by contrast-enhanced MRI.
4. Age Patient must be aged ≥ 1 month (corrected age) to ≤ 25 years at the time of study enrollment
5. Study group Participants must belong to one of the following groups to be eligible. Group 1: NF1 with progressing/refractory LGG Group 2: NF1 with PN Group 3: Progressing/refractory LGG with KIAA 1549-BRAF fursion Group 4: Progressing/refractory glioma with activation of the MAPK/ERK pathway who do not meet criteria for other study groups
6. Tumor Tissue Sample Tumor tissue will be required for all patients (fresh tissue recommended when available). Patients with NF1 and LGG or PN can still be enrolled without tissue if no surgery or biopsy was conducted.

7 Previous MRI At least two previous MRIS fro Group 1, 3, 4 and one previous MRI for Group 2 must be available for central review.

8. Prior therapy Participants must have failed at least one line of treatment including chemotherapy and/or radiation therapy except for plexiform neurofibroma (since there is no recognized standard treatment for his tumor).

9. Prior therapy toxicity Patients must have recovered to grade ≤ 1 from acute toxic effects of all prior chemotherapy, immunotherapy or radiotherapy prior to enrollment. Toxicities will be graded as per the National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE), version 5.0.

10. Prior therapy timeline Participants having previously received a chemotherapy agent(s) and/or radiation must conform to the timeline described below. There is no limitation on the number of previous treatments or cycles received.

• An interval of at least 28 days after the last dose of a myelosuppressive chemotherapy, and at least 42 days after the last dose of Nitrosoureas is required prior to starting trametinib.
• An interval of at least 28 days after the last dose of any biologic agents including monoclonal antibody treatment, immunotherapy, viral therapy and other investigational agent is required prior to starting trametinib.
• An interval of at least 84 days after the end of the radiation therapy is required prior to starting trametinib.

• An interval of at least 48 hours for short-acting colony stimulating factor agents and 10 days interval for long-acting colony stimulating factor agents are required prior to starting trametinib.

  11. Life expectancy Patients must have a life expectancy of greater than 6 months.

  12. Performance level Patients must have a performance status corresponding to a Lansky/Karnofsky score ≥50.

  13. Organ Function Requirements

Participants must have normal organ and marrow function as defined below:

• Total leukocytes ≥ 3,000/µL
• Absolute neutrophil count (ANC) ≥ 1, 000/µL
• Hemoglobin > 80 g/l (transfusion independent within last 2 weeks)
• Platelet count ≥ 100,000/µL (transfusion independent within last 2 weeks)
• Total bilirubin ≤ 1.5 times the ULN within normal institutional limits for age
• Alanine Aminotransferase (ALT) ≤ 2.5 × upper limit of normal (ULN)*
• Creatinine serum within normal institutional limits for age OR creatinine clearance ≥60 mL/min/1.73 m2 for participants with creatinine levels above institutional normal.
• Creatine phosphokinase ≤ 2x ULN
• A cardiac function defined as Corrected QT (QTcB) interval < 480 msec and LVEF ≥ lower limit of normal (LLN) by echocardiogram (ECHO).

• Blood pressure must be smaller or equal to the 95th percentile for patient's age, height and gender.

  • For uniformity reasons, the ULN for ALT will be 45 U/L in this study

    14. Reproductive status Children of childbearing and child-fathering potential must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation. Should a female become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately. Males and females treated or enrolled in this protocol must also agree to use adequate contraception prior to the study, for the duration of study participation, and 4 months after completion of trametinib administration. Furthermore, females of childbearing potential (older than 10 years old for this study) must have a negative serum pregnancy test within 7 days prior to the start of study drug. A urine pregnancy test will be done according to evaluation calendar at at 30 days and at 6 months following the last does of study medications.

    15. Administration of oral medication Patients must be able to ingest and retain enterally (per os, nasogastric tube or gastrostomy) administered medication and be free of any clinically significant gastrointestinal abnormalities limiting the absorption of the medication. Tablets cannot be crushed. If the patient cannot swallow tablets, the liquid form should then be used.

SPECIFIC INCLUSION CRITERIA

Participants must belong to one of the following groups to be eligible.

• Group 1: NF1 with Progressing/Refractory LGG (42 patients).
• Group 2: NF1 with Progressing/Refractory PN (46 patients).
• Group 3: Progressing/Refractory LGG with KIAA1549-BRAF fusion (42 patients).
• Group 4: Progressing/Refractory CNS Glioma with activation of the MAPK/ERK pathway who do not meet criteria of other study groups (20 patients).

Exclusion Criteria

1. Other investigational agents Patients who are receiving any other investigational agents.
2. Cardiac exclusion criteria Patients who have an ejection fraction inferior to the institution LLN, a QTcB ≥ 480 msec or an absolute resting left ventricular ejection fraction (LVEF) of ≤ 39% are not eligible for enrolment.
3. Presence of another malignancy Patient has any other malignancy except if the other primary malignancy is neither currently clinically significant nor requiring active intervention.
4. Previous MEK inhibitor treatment Participants previously treated with a MEK inhibitor who showed less than stable disease during treatment.
5. Tumor with BRAF V600E mutation Patients with a tumor presenting a positive BRAF V600E mutation.
6. Other uncontrollable medical disease Patient has a severe and uncontrollable medical disease (i.e., uncontrolled diabetes, chronic renal disease or active uncontrolled infection), has a chronic liver disease (i.e., chronic active hepatitis and cirrhosis), uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements.
7. Known HIV infection Patient has a known diagnosis of human immunodeficiency virus (HIV) infection, hepatitis B or C.
8. Previous surgery Patients who had major surgery within 2 weeks prior to study entry.
9. Allergy History of allergic reactions attributed to compounds of similar chemical or biologic composition to trametinib.
10. Previous history of non-compliance Patients with a previous significant history of non-compliance to their treatment or medical regimen.
11. Pregnant or breastfeeding patients Pregnant or breastfeeding female patients are not eligible for this study.

Publications

Perreault S, Larouche V, Tabori U, Hawkin C, Lippé S, Ellezam B, Décarie JC, Théoret Y, Métras MÉ, Sultan S, Cantin É, Routhier MÈ, Caru M, Legault G, Bouffet É, Lafay-Cousin L, Hukin J, Erker C, Jabado N. A phase 2 study of trametinib for patients with pediatric glioma or plexiform neurofibroma with refractory tumor and activation of the MAPK/ERK pathway: TRAM-01. BMC Cancer. 2019 Dec 27;19(1):1250. doi: 10.1186/s12885-019-6442-2.