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Study Description

ACTEMRA (tocilizumab) is an IL-6 receptor antagonist used for the treatment of adult Rheumatoid Arthritis as well as Polyarticular (PJIA) and Systemic (SJIA) Juvenile Idiopathic Arthritis. In this Phase II, the drug will be used to treat pediatric patients diagnosed with recurrent Adamantinomatous Craniopharyngioma including patients who have undergone surgery and/or radiation therapy.

Adamantinomatous Craniopharyngioma (ACP) is a highly debilitating pediatric brain tumor that lacks medical anti-tumor therapies. Current therapy, which depends largely on surgery and radiation, is associated with poor quality of life and becomes more challenging and risky in the setting of recurrent disease. Recent discoveries regarding the biological characteristics of ACP indicate that available agents, including IL-6 pathway blockers may have efficacy in the control of ACP. We hypothesize that the IL6- receptor antagonist ACTEMRA (tocilizumab) will be safe and effective at inducing tumor response in children with residual ACP.

In this study, up to 38 patients will receive tocilizumab at the dose approved for pediatric Systemic Juvenile Idiopathic Arthritis (< 30 kg: 12 mg/kg IV every 2 weeks; ≥30 kg: 8 mg/kg IV every 2 weeks). Therapy may continue for up to two years (26 cycles).

It will be a multi-center Phase 2 trial with two strata for patients aged >1 year and <25 years with unresectable ACP who may have been previously treated with radiation (Stratum 1, 18 patients) or without radiation (Stratum 2, 18 patients).

Inclusion Criteria

1. Age: Patients must be ≥ 12 months and ≤ 25 years of age at the time of study enrollment.
2. Diagnosis: Patients with histologically-confirmed adamantinomatous craniopharyngioma (ACP) Histologic confirmation of ACP may be made on solid tumor or, if no solid tumor can be safely obtained, cyst fluid with classic ACP characteristics of thick, cholesterol-rich, greenish-brown liquid in the context of imaging features consistent with craniopharyngioma, including lobulated, cystic/solid mass with calcifications that originates in the sellar/suprasellar region.
3. Disease Status: Patients must have measurable disease.
   • Stratum 1: Patients with progressive or recurrent ACP who demonstrate cystic and/or solid recurrence or progression at least 6 months post completion of radiation therapy
   • Stratum 2: Patients with measurable ACP who have undergone surgery but have NOT previously undergone irradiation (but may have received prior systemic or intracystic therapy). Progressive disease is allowed but not required.
4. Performance Level: Karnofsky ≥ 50% for patients > 16 years of age and Lansky ≥ 50 for patients ≤ 16 years of age (See Appendix I). Note: Neurologic deficits in patients with CNS tumors must have been stable for at least 7 days prior to study enrollment. 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.
5. Prior Therapy: Patients must have recovered or stabilized from the acute toxic effects of prior treatments
   • Biologic (anti-neoplastic agent): At least 7 days must have elapsed after the last (systemic or intracystic) dose of a biologic agent. For agents that have known adverse events occurring beyond 7 days after administration, this period must be extended beyond the time during which adverse events are known to occur. The duration of this interval must be discussed with the study chair
   • Immunotherapy: At least 42 days after the completion of any type of systemic immunotherapy, e.g. tumor vaccines.
   • Monoclonal antibodies: At least 21 days after the last dose of a monoclonal antibody.
   • Radiation therapy: Patients must have had their last (conventional or hypofractionated) fraction of: a) Focal irradiation > 6 months prior to enrollment and b) No prior craniospinal irradiation is permitted.
   • Corticosteroids: Patients receiving dexamethasone must be on a stable or decreasing dose for at least 1 week prior to enrollment
   • Myelosuppressive systemic therapy: At least 21 days must have elapsed after the last systemic myelosuppressive therapy.
   • Surgery: At least 6 weeks must have elapsed since surgery.
6. 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 be transfused)
   • Adequate Renal Function Defined as:
     • Creatinine clearance or radioisotope GFR > 70ml/min/1.73 m2 or
     • A serum creatinine based on (Schwartz et al. J. Peds, 106:522, 1985) age/gender as follows: 1 to < 2 years: maximum serum creatinine 0.6 mg/dL for males and females. 2 to < 6 years: maximum serum creatinine 0.8 mg/dL for males and females. 6 to < 10 years: maximum serum creatinine 1.0 mg/dL for males and females. 10 to < 13 years: maximum serum creatinine 1.2 mg/dL for males and females. 13 to < 16 years: maximum serum creatinine 1.5 mg/dL for males and 1.4 mg/dL for females. ≥ 16 years: maximum serum creatinine 1.7 mg/dL for males and 1.4 mg/dL for females.
   • Adequate Liver Function Defined as:
     • Total bilirubin within normal institutional limits
     • AST (SGOT) ≤ 2.5 × institutional upper limit of normal
     • ALT (SGPT) ≤ 2.5 × institutional upper limit of normal
   • Adequate Neurologic Function Defined as:
     • Patients with neurological deficits should have deficits that are stable for a minimum of 1 week prior to enrollment.
     • Patients with current seizure disorders may be enrolled if seizures are well-controlled on antiepileptic therapies.
7. 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

1. 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 for at least 90 days after discontinuation of drug for females and at least 60 days for males. For females of childbearing potential, agreement to remain abstinent (refrain from heterosexual intercourse) or use contraceptive methods (bilateral tubal ligation, male sterilization, hormonal contraceptives that inhibit ovulation, hormone-releasing intrauterine devices, and copper intrauterine devices; hormonal contraceptive methods must be supplemented by a barrier method) and agreement to refrain from donating eggs are required. For males of reproductive potential, agreement to remain abstinent (refrain from heterosexual intercourse) or use a condom, and agreement to refrain from donating sperm.
2. Gastrointestinal Disease: Patients with a history of serious gastrointestinal disease, including inflammatory bowel disease or gastrointestinal perforation
3. Concomitant Medications
   • Corticosteroids: Patients receiving corticosteroids who have not been on a stable or decreasing dose of corticosteroid for at least 7 days prior to enrollment are not eligible.
   • Investigational Drugs: Patients who are currently receiving another investigational drug are not eligible.
   • Anti-cancer Agents: Patients who are currently receiving other anti-cancer agents are not eligible.
4. Study Specific:
   • Patients who have an uncontrolled infection are not eligible.
   • Patients who have received any live or attenuated vaccinations within three months prior to start of therapy are not eligible.
   • Any significant concurrent medical or surgical condition that would jeopardize the patient's safety or ability to complete the study, including, but not limited to, disease of the nervous, renal, hepatic, cardiac (such as symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia), pulmonary, or endocrine system
   • Patients who have a history of Human Immunodeficiency Virus, Hepatitis B Virus, Hepatitis C Virus or Tuberculosis infection are not eligible.
   • Patients who have received a prior solid organ transplantation are not eligible.
   • 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.
   • Patients who have a history of alcohol, drug, or chemical abuse within 6 months of screening.
   • Patients who have had surgery within the last 6 weeks or who have concerns for poor postsurgical wound healing.
   • Patients who have a history of allergic reactions attributed to compounds of similar chemical or biologic composition to tocilizumab and its excipients are not eligible.

Other inclusion and exclusion criteria may apply.

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Study Description

The primary objective of the study is to determine the recommended phase 2 dose (RP2D) of ziftomenib in combination with chemotherapy (FLA) in children with relapsed or refractory KMT2A-r, NUP98-r, or NPM1-m acute leukemia based on safety and pharmacokinetics (PK).

Inclusion Criteria

• Age: 0-21 years (and at least 5 kg body weight), with a minimum of 80% of participants under 18 years of age.
• Diagnosis: KMT2A-r, NPM1-m, or NUP98-r acute leukemia in first or greater relapse or refractory to standard (re-) induction treatment (including HSCT). Please note that genetic alteration must be confirmed by the central laboratory, or the participant will discontinue protocol therapy.
• Eligible participants also must fulfill one of the following conditions:
  • Bone marrow relapse is defined as:
    • A single bone marrow sample showing ≥ 5% leukemic blasts by flow cytometry, fluorescence in situ hybridization (FISH) testing, or other molecular method.
      • a single bone marrow sample with at least two tests showing ≥ 1% leukemic blasts, examples of tests (confirmed by central lab) include: Flow cytometry showing leukemia ≥ 1% by multiparameter flow cytometry (MFC) confirmed by central lab
      • Karyotypic abnormality as confirmed by central cytogenetic review.
      • FISH abnormality identical to one present at diagnosis (must be above level of sensitivity of specific FISH probe; central cytogenetic review required).
      • Polymerase chain reaction (PCR) or next generation sequencing (NGS)-based demonstration of validated leukemogenic lesion (e.g., fusion, mutation) in a Clinical Laboratory Improvement Amendments (CLIA)-approved laboratory that matches initial diagnosis and is quantifiable as ≥1% confirmed by central lab.
    • Participants with combined extramedullary and bone marrow relapse (defined as above) are eligible.
    • Participants with isolated extramedullary disease (EMD) are not eligible. EMD relapse is defined as biopsy-proven extramedullary disease without bone marrow disease after documented complete response (CR) following initial therapy. Participants with isolated central nervous system (CNS) relapse are not eligible. Participants with a combined medullary/extramedullary relapse, including CNS disease, are eligible.
    • Participants with asymptomatic CNS3 disease are eligible if they do not have isolated CNS3 extramedullary relapse.
    • For participants unable to undergo bone marrow assessment, a peripheral blood absolute blast count ≥ 1,000 cell/microliter is sufficient to diagnose relapsed or refractory disease and facilitate confirmation of required genetic alterations for protocol therapy.
  • Refractory disease/induction failure:
    • Acute myeloid leukemia (AML): The bone marrow contains ≥ 1% leukemic blasts by MFC at the end of 2 cycles of induction therapy.
    • Acute lymphoblastic leukemia (ALL)/mixed-phenotype acute leukemia (MPAL)/acute undifferentiated leukemia (AUL): The bone marrow contains ≥ 1% leukemic blasts by MFC at the end of induction and consolidation, or persistent MRD prior HSCT (defined as > 0.01%).
    • For participants unable to have bone marrow assessed, a peripheral blood absolute blast count ≥ 1,000 cell/microliter is sufficient to diagnose relapsed or refractory disease.
  • Molecular refractory disease in infant ALL, defined as MRD >0.05% after primary induction and consolidation therapy measured by MFC or PCR.
• Performance status: Participants must have a performance status corresponding to Eastern Cooperative Oncology Group (ECOG) scores of 0, 1 or 2 (≥ 50% Lansky or Karnofsky score). Use ECOG for adult participants (≥18 to 21 years), Karnofsky for participants ≥16 to 18 years of age, and Lansky for participants < 16 years of age. Participants 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.
• Adequate organ function:
  • Renal function defined as: Creatinine clearance (CrCl) ≥60 mL/min (as measured by a nuclear glomerular filtration rate [GFR] scan or calculated by the Schwartz formula and normalized to a body surface area of 1.73 m^2).
  • Liver function defined as:
    • Direct bilirubin < 3 x upper limit of normal (ULN) and Serum glutamic pyruvic transaminase (SGPT) (alanine transaminase [ALT]) ≤ 5 x ULN.
    • If liver abnormality is due to radiographically identifiable leukemia infiltrate, the participant will remain eligible.
  • Cardiac function defined as: Pre-treatment left ventricular function on echocardiography: Fractional shortening (FS) ≥ 25% or ejection fraction (EF) ≥ 40%, and no signs of congestive heart failure within 4 weeks before start of screening.
• Prior therapy: Participants must have recovered from the acute toxic effects of all prior anti-cancer therapy (excluding Grade 2 toxicities that are not considered a safety risk or medically significant toxicity deemed irreversible by the Investigator) and must meet the following minimum duration from prior anti-cancer directed therapy prior to enrollment.
  • Cytotoxic chemotherapy: Must not have received within 14 days or within 5 drug half-lives (whichever is longer), of entry onto this study, except for hydroxyurea or corticosteroids. Use of steroids and hydroxyurea for other purposes such as differentiation syndrome, or to premedication to prevent allergic reaction or during anesthesia is allowed.
  • Intrathecal cytotoxic therapy: No washout or waiting period is required for participants having received any combination of intrathecal cytarabine, methotrexate, and/or hydrocortisone.
  • Antibodies: ≥ 21 days must have elapsed from infusion of last dose of an antibody-drug conjugate. For unmodified antibodies or T cell engaging antibodies, 2 half-lives must have elapsed before enrollment. Any toxicity related to prior antibody therapy must be recovered back to baseline.
  • Interleukins, interferons and cytokines (other than hematopoietic growth factors): ≥ 21 days after the completion of interleukins, interferon or cytokines (other than hematopoietic growth factors).
  • Hematopoietic growth factors: ≥ 14 days after the last dose of a long-acting growth factor (e.g., peg-filgrastim) or 7 days for short-acting growth factor.
  • Radiation therapy (RT): 14 days have elapsed for local palliative RT (small port); ≥ 84 days must have elapsed if prior craniospinal RT or if ≥ 50% radiation of pelvis; ≥ 42 days must have elapsed if other substantial bone marrow (BM) radiation.
  • Stem cell infusions
    • Participants who have relapsed after allogeneic (non-autologous) BM or stem cell transplant (with or without total body irradiation [TBI]) or boost infusion (any stem cell product; not including donor lymphocyte infusion [DLI]) must be at least 84 days post HSCT and without evidence of graft versus host disease (GVHD) of any severity except: the use of topical steroids for cutaneous GVHD is allowed and stable steroid doses less than or equal to 10 mg of prednisone daily is permitted. Prednisone dose must be adjusted for body surface area (BSA) in young children. Physiologic doses of hydrocortisone for participants with adrenal insufficiency is allowed.
    • Participants who after relapse and continue to receive cyclosporine, tacrolimus or other agents to treat or prevent either GVHD post BM transplant or organ rejection post-transplant are not eligible for this trial. In the relapse setting, participants must be off medications to treat or prevent either GVHD post BM transplant or organ rejection post-transplant for at least 14 days prior to enrollment. A stable steroid dose as mentioned above is allowed.
  • Cellular therapy: ≥ 30 days after the completion of DLI or any type of cellular Therapy (e.g., modified T cells, NK cells, dendritic cells, etc.).
  • Prior exposure to a different menin inhibitor: Participants who received previous treatment with a different menin inhibitor are allowed to enrol in the study with the exception of those who experienced a severe adverse event attributable to the strong anti-proliferative/pro-differentiation effects of other menin inhibitors (such as severe differentiation syndrome). Participants who experienced a severe adverse event, which can directly be attributed to specific effects (e.g., long QT syndrome) observed with other menin inhibitors can participate in the study if they fulfill the inclusion criteria.
• Informed consent: Written, signed and dated informed consent and pediatric assent (if applicable) according to local law and legislation should be collected before start of any study procedures.
• Female participants of childbearing potential must have a negative urine or serum pregnancy test confirmed prior to enrollment.
• Female participants with infants must agree not to breastfeed their infants while on this study.
• Contraception:
  • Participants of reproductive potential, starting from menarche and onwards, may not participate unless they have agreed to use a highly effective contraceptive method per Clinical Trial Facilitation Group (CTFG) guidelines for the duration of study therapy and for 6 months after the completion of all study therapy. For further guidance please review the CTFG website.
  • Male participants must use a condom during intercourse and agree not to father a child or donate sperm during therapy and for the duration of study therapy and for 4 months after the completion of all study therapy.
• Enrollment APAL2020SC trial (US and Canada only): Participants in the US and Canada must have enrolled in the APAL2020SC trial prior to enrollment in the APAL2020K trial.

Exclusion Criteria

• Participants who in the opinion of the investigator may not be able to comply with the study requirements of the study.
• Participants with Down syndrome.
• Participants with EMD are not eligible. EMD relapse is defined as biopsy proven extramedullary disease without bone marrow disease after documented CR following initial therapy.
• Participants with isolated CNS relapse are not eligible, as well as symptomatic CNS3 disease.
• Participants with acute promyelocytic leukemia (APL) or juvenile myelomonocytic leukemia (JMML).
• Participants with malabsorption syndrome or any other condition that precludes enteral administration of a menin inhibitor.
• Concomitant therapy: Gastric pH has great influence on absorption of ziftomenib; therefore, the use of proton pump inhibitors is prohibited, if necessary H2 Blockers may provide an alternative treatment option.
• Participants who are currently receiving another investigational drug.
• Participants with any known congenital bone marrow failure syndrome.
• Participants with known prior allergy to any of the medications used in protocol therapy.
• Participants with documented active, uncontrolled infection at the time of study entry.
• Active/uncontrolled known human immunodeficiency virus (HIV) infection, hepatitis B virus (HBV) and hepatitis C virus (HCV). Note: HIV testing does not need to be conducted at screening unless it is required per local guidelines or institutional standard.
• Post menarche female participants with positive pregnancy test, and a lactating female participant.
• Participant has a pre-existing disorder predisposing the participant to a serious or life-threatening infection (e.g., cystic fibrosis, congenital or acquired immunodeficiency, bleeding disorder, or cytopenia not related to the leukemia or its treatment).
• Participants must not be receiving other investigational medications (defined as medicinal products not yet approved for any indications, including alternative/herbal therapies) within 30 days of first dose of study drug or while on study.
• Significant congenital cardiovascular disease including, but not limited to conditions such as long QT syndrome, fundamental uncorrected cardiac defect (e.g., coarctation of the aorta) that poses a significant risk to the participant (ventricular septal defect or atrial septal defect are considered non-significant).
• Underlying medical condition that, in the Principal Investigator's opinion, will make the administration of study treatment hazardous or obscure the interpretation of toxicity determination or AEs.
• For fludarabine and cytarabine: Hypersensitivity to the active substance or to any of the excipients.
• Recent live vaccinations for at least 6 months.

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Centres

Study Description

This study will evaluate the safety, pharmacokinetics, and efficacy of alectinib in children and adolescents with ALK fusion-positive solid or CNS tumors for whom prior treatment has proven to be ineffective or for whom there is no satisfactory standard treatment available.

Inclusion Criteria

• Histologically confirmed diagnosis of CNS or solid tumors harboring ALK gene fusions as determined locally by an appropriately validated assay performed in a CLIA-certified or equivalently-accredited diagnostic laboratory, or centrally by a Foundation Medicine Clinical Trial Assay (CTA) or the alternative, approved central laboratory for that region
• Disease status: prior treatment proven to be ineffective (i.e. relapsed or refractory), or for whom there is no satisfactory standard treatment available. Disease should be measurable and evaluable as defined by Response Evaluation Criteria in Solid Tumors (RECIST) v 1.1, or Response Assessment in Neuro-oncology criteria (RANO) +/- bone marrow criteria for primary CNS tumors or International Neuroblastoma Response Criteria (INRC)
• Available tumor tissue for submission to the Sponsor from active disease, obtained subsequent to last anti-cancer therapy regiment administered and obtained prior to study enrollment, archival tumor tissue from original diagnosis, or willingness to undergo a core or excisional biopsy sample collection prior to enrollment
• For participants < 16 years old, Lansky Performance Status >/= 50%
• For participants >/= 16 years old, Karnofsky Performance Status >/= 50%
• Adequate bone marrow function as defined by the protocol within at least 28 days prior to initiation of study drug
• Participant and/or caregiver willingness and ability to complete clinical outcome assessments throughout the study using either electronic, paper, or interviewer methods
• For females of childbearing potential: agreement to remain abstinent (refrain from heterosexual intercourse) or use contraception, and agreement to refrain from donating eggs, as defined by the protocol
• For males who are not surgically sterile: agreement to remain abstinent (refrain from heterosexual intercourse) or use contraception, and agreement to refrain from donating sperm, as defined by the protocol

Exclusion Criteria

• Medical history of: prior use of ALK inhibitors; any gastrointestinal disorder that may affect absorption of oral medications, such as mal-absorption syndrome or status post-major bowel resection; history of organ transplant; stem cell infusions as defined by the protocol
• Substance abuse within 12 months prior to screening
• Familial or personal history of congenital bone disorders, bone metabolism alterations, or osteopenia
• Treatment with investigational therapy 28 days prior to initiation of study drug
• Liver or kidney disease as defined by the protocol
• National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) v5.0 grade >/=3 toxicities attributed to any prior therapy such as radiotherapy (excluding alopecia), which have not shown improvement and are strictly considered to interfere with alectinib
• Co-administration of anti-cancer therapies other than those administered in this study
• Active hepatitis B or C virus (HBV, HBC), or known HIV-positivity or AIDS-related illness
• Any clinically significant concomitant disease or condition that could interfere with, or for which the treatment might interfere with, the conduct of the study or the absorption of oral medications or that would, in the opinion of the Principal Investigator, pose an unacceptable risk to the participant in this study
• Any psychological, familial, sociological, or geographical condition potentially hampering compliance with the study protocol requirements and/or follow-up procedures; such conditions should be discussed with the participant before trial entry
• Planned procedure or surgery during the study except as permitted treatment as defined by the protocol
• Infection considered by the investigator to be clinically uncontrolled or of unacceptable risk to the participant upon induction of neutropenia, including participants who are, or should be, on antimicrobial agents for the treatment as active infection
• Pregnant or breastfeeding, or intending to become pregnant during the study or within 3 months after the final dose of alectinib

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Study Description

Adamantinomatous Craniopharyngioma (ACP) is a highly debilitating pediatric brain tumor that lacks medical anti-tumor therapies. Current therapy, which depends largely on surgery and radiation, is associated with poor quality of life and becomes more challenging and risky in the setting of recurrent disease. Recent discoveries regarding the biological characteristics of ACP indicate that available agents, including Mitogen-activated protein kinase/extracellular signal-regulated kinase (MAPK/ERK) pathway inhibitors may have efficacy in the control of ACP. Binimetinib is one such agent.

In this study, up to 38 patients will receive oral binimetinib at the recommended phase 2 pediatric dose (RP2D) of 32 mg/m2/dose PO every 12 hours for 4 weeks which represents one cycle. Cycles will last 28 days and treatment may continue for up to two years (26 cycles).

It will be a multi-center Phase 2 trial with two strata for patients aged >1 year and <25 years with measurable ACP who may have been previously treated with radiation (Stratum 1, 18 patients) or without radiation (Stratum 2, 18 patients).

Inclusion Criteria

• Patients must be ≥ 12 months and ≤ 25 years of age at the time of study enrollment.
• Patients with histologically-confirmed adamantinomatous craniopharyngioma (ACP) Histologic confirmation of ACP may be made on solid tumor or, if no solid tumor can be safely obtained, cyst fluid with classic ACP characteristics of thick, cholesterol-rich, greenish-brown liquid in the context of imaging features consistent with craniopharyngioma, including lobulated, cystic/solid mass with calcifications that originates in the sellar/suprasellar region.
• Disease Status: Patients must have measurable disease.
  • Stratum 1: Patients with progressive or recurrent ACP who demonstrate cystic and/or solid recurrence or progression at least 6 months post completion of radiation therapy
  • Stratum 2: Patients with measurable ACP who have undergone surgery but have NOT previously undergone irradiation (but may have received prior systemic or intracystic therapy). Progressive disease is allowed but not required.
• Performance Level: Karnofsky ≥ 50% for patients > 16 years of age and Lansky ≥ 50 for patients ≤ 16 years of age (See Appendix I). Note: Neurologic deficits in patients with CNS tumors must have been stable for at least 7 days prior to study enrollment. 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 have recovered or stabilized from the acute toxic effects of prior treatments
  • Biologic (anti-neoplastic agent): At least 7 days must have elapsed after the last (systemic or intracystic) dose of a biologic agent. For agents that have known adverse events occurring beyond 7 days after administration, this period must be extended beyond the time during which adverse events are known to occur. The duration of this interval must be discussed with the study chair
  • Immunotherapy: At least 42 days after the completion of any type of systemic immunotherapy, e.g. tumor vaccines.
  • Monoclonal antibodies: At least 21 days after the last dose of a monoclonal antibody.
  • Radiation therapy: Patients must have had their last (conventional or hypofractionated) fraction of: a) Focal irradiation > 6 months prior to enrollment and b) No prior craniospinal irradiation is permitted.
  • Corticosteroids: Patients receiving dexamethasone must be on a stable or decreasing dose for at least 1 week prior to enrollment
  • Myelosuppressive systemic therapy: At least 21 days must have elapsed after the last systemic myelosuppressive therapy.
  • Surgery: At least 6 weeks must have elapsed since surgery.
• 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 be transfused)
  • Adequate Renal Function Defined as:
    • Creatinine clearance or radioisotope GFR > 70ml/min/1.73 m2 or
    • A serum creatinine based on (Schwartz et al. J. Peds, 106:522, 1985) age/gender as follows:
      • 1 to < 2 years: maximum serum creatinine 0.6 mg/dL for males and females.
      • 2 to < 6 years: maximum serum creatinine 0.8 mg/dL for males and females.
      • 6 to < 10 years: maximum serum creatinine 1.0 mg/dL for males and females.
      • 10 to < 13 years: maximum serum creatinine 1.2 mg/dL for males and females.
      • 13 to < 16 years: maximum serum creatinine 1.5 mg/dL for males and 1.4 mg/dL for females.
      • ≥ 16 years: maximum serum creatinine 1.7 mg/dL for males and 1.4 mg/dL for females.
  • Adequate Liver Function Defined as:
    • Total bilirubin ≤ 1.5 × institutional upper limit of normal
    • AST (SGOT) ≤ 2.5 × institutional upper limit of normal
    • ALT (SGPT) ≤ 2.5 × institutional upper limit of normal
  • Adequate Cardiac Function Defined as:
    • Left Ventricular Ejection Fraction greater than the institutional lower limit of normal by echocardiogram
    • QTc ≤ 480 msec (by Bazett formula)
  • Adequate Neurologic Function Defined as:
    • Patients with neurological deficits should have deficits that are stable for a minimum of 1 week prior to enrollment.
    • Patients with current seizure disorders may be enrolled if seizures are well-controlled on antiepileptic therapies.
  • 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 for at least 90 days after discontinuation of drug for females and at least 60 days for males. For females of childbearing potential, agreement to remain abstinent (refrain from heterosexual intercourse) or use contraceptive methods (bilateral tubal ligation, male sterilization, hormonal contraceptives that inhibit ovulation, hormone-releasing intrauterine devices, and copper intrauterine devices; hormonal contraceptive methods must be supplemented by a barrier method) and agreement to refrain from donating eggs are required. For males of reproductive potential, agreement to remain abstinent (refrain from heterosexual intercourse) or use a condom, and agreement to refrain from donating sperm.
• Gastrointestinal Disease:
  • Patients with a history of serious gastrointestinal disease, including inflammatory bowel disease or gastrointestinal perforation
  • Patients who are unable to swallow, retain or absorb oral medications
• Concomitant Medications
  • Corticosteroids: Patients receiving corticosteroids who have not been on a stable or decreasing dose of corticosteroid for at least 7 days prior to enrollment are not eligible.
  • Investigational Drugs: Patients who are currently receiving another investigational drug are not eligible.
  • Anti-cancer Agents: Patients who are currently receiving other anti-cancer agents are not eligible.
• Study Specific:
  • Patients who have an uncontrolled infection are not eligible.
  • Patients who have received any live or attenuated vaccinations within three months prior to start of therapy are not eligible.
  • Any significant concurrent medical or surgical condition that would jeopardize the patient's safety or ability to complete the study, including, but not limited to, disease of the nervous, renal, hepatic, cardiac (such as symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia), pulmonary, or endocrine system
  • Patients who have a history of Human Immunodeficiency Virus, Hepatitis B Virus, Hepatitis C Virus or Tuberculosis infection are not eligible.
  • Patients who have received a prior solid organ transplantation are not eligible.
  • 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.
  • Patients who have a history of alcohol, drug, or chemical abuse within 6 months of screening.
  • Patients who have had surgery within the last 6 weeks or who have concerns for poor postsurgical wound healing.
  • Patients who have a history of allergic reactions attributed to compounds of similar chemical or biologic composition to tocilizumab and its excipients are not eligible.

Publications

• Foreman NK, Faestel PM, Pearson J, Disabato J, Poole M, Wilkening G, Arenson EB, Greffe B, Thorne R. Health status in 52 long-term survivors of pediatric brain tumors. J Neurooncol. 1999 Jan;41(1):47-53. doi: 10.1023/a:1006145724500.
• Goldman S, Pollack IF, Jakacki RI, Billups CA, Poussaint TY, Adesina AM, Panigrahy A, Parsons DW, Broniscer A, Robinson GW, Robison NJ, Partap S, Kilburn LB, Onar-Thomas A, Dunkel IJ, Fouladi M. Phase II study of peginterferon alpha-2b for patients with unresectable or recurrent craniopharyngiomas: a Pediatric Brain Tumor Consortium report. Neuro Oncol. 2020 Nov 26;22(11):1696-1704. doi: 10.1093/neuonc/noaa119.
• Apps JR, Carreno G, Gonzalez-Meljem JM, Haston S, Guiho R, Cooper JE, Manshaei S, Jani N, Holsken A, Pettorini B, Beynon RJ, Simpson DM, Fraser HC, Hong Y, Hallang S, Stone TJ, Virasami A, Donson AM, Jones D, Aquilina K, Spoudeas H, Joshi AR, Grundy R, Storer LCD, Korbonits M, Hilton DA, Tossell K, Thavaraj S, Ungless MA, Gil J, Buslei R, Hankinson T, Hargrave D, Goding C, Andoniadou CL, Brogan P, Jacques TS, Williams HJ, Martinez-Barbera JP. Tumour compartment transcriptomics demonstrates the activation of inflammatory and odontogenic programmes in human adamantinomatous craniopharyngioma and identifies the MAPK/ERK pathway as a novel therapeutic target. Acta Neuropathol. 2018 May;135(5):757-777. doi: 10.1007/s00401-018-1830-2. Epub 2018 Mar 14.
• Haston S, Pozzi S, Carreno G, Manshaei S, Panousopoulos L, Gonzalez-Meljem JM, Apps JR, Virasami A, Thavaraj S, Gutteridge A, Forshew T, Marais R, Brandner S, Jacques TS, Andoniadou CL, Martinez-Barbera JP. MAPK pathway control of stem cell proliferation and differentiation in the embryonic pituitary provides insights into the pathogenesis of papillary craniopharyngioma. Development. 2017 Jun 15;144(12):2141-2152. doi: 10.1242/dev.150490. Epub 2017 May 15.
• Bendell JC, Javle M, Bekaii-Saab TS, Finn RS, Wainberg ZA, Laheru DA, Weekes CD, Tan BR, Khan GN, Zalupski MM, Infante JR, Jones S, Papadopoulos KP, Tolcher AW, Chavira RE, Christy-Bittel JL, Barrett E, Patnaik A. A phase 1 dose-escalation and expansion study of binimetinib (MEK162), a potent and selective oral MEK1/2 inhibitor. Br J Cancer. 2017 Feb 28;116(5):575-583. doi: 10.1038/bjc.2017.10. Epub 2017 Feb 2.
• Watanabe K, Otsu S, Hirashima Y, Morinaga R, Nishikawa K, Hisamatsu Y, Shimokata T, Inada-Inoue M, Shibata T, Takeuchi H, Watanabe T, Tokushige K, Maacke H, Shiaro K, Ando Y. A phase I study of binimetinib (MEK162) in Japanese patients with advanced solid tumors. Cancer Chemother Pharmacol. 2016 Jun;77(6):1157-64. doi: 10.1007/s00280-016-3019-5. Epub 2016 Apr 12.
• Patel K, Allen J, Zagzag D, Wisoff J, Radmanesh A, Gindin T, Nicolaides T. Radiologic response to MEK inhibition in a patient with a WNT-activated craniopharyngioma. Pediatr Blood Cancer. 2021 Mar;68(3):e28753. doi: 10.1002/pbc.28753. Epub 2020 Oct 19. No abstract available.

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Study Description

This phase III trial studies if selumetinib works just as well as the standard treatment with carboplatin/vincristine (CV) for subjects with NF1-associated low grade glioma (LGG), and to see if selumetinib is better than CV in improving vision in subjects with LGG of the optic pathway (vision nerves). Selumetinib is a drug that works by blocking some enzymes that low-grade glioma tumor cells need for their growth. This results in killing tumor cells. Drugs used as chemotherapy, such as carboplatin and vincristine, 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. It is not yet known whether selumetinib works better in treating patients with NF1-associated low-grade glioma compared to standard therapy with carboplatin and vincristine.

PRIMARY OBJECTIVES:

I. To determine whether the efficacy of treatment with selumetinib sulfate (selumetinib) as measured by event-free survival (EFS) is non-inferior to treatment with carboplatin/vincristine sulfate (vincristine) (CV) in previously untreated neurofibromatosis type 1 (NF1)-associated low-grade glioma (LGG).

II. To determine whether visual acuity (VA) using Teller acuity cards (TAC), in patients with NF1-associated LGG within the optic pathway, is better in those treated with selumetinib compared to CV.

SECONDARY OBJECTIVES:

I. To estimate tumor response rates and overall survival (OS) in each treatment regimen in previously untreated NF1-associated LGG.

II. To evaluate VA outcomes utilizing HOTV letter acuity testing in previously untreated NF1-associated LGG within the optic pathway in patients who are old enough to perform visual acuity testing utilizing HOTV (a recognition acuity measure).

III. To describe the improvement in motor function as measured by the Vineland scale in patients with previously untreated NF1-associated LGG that have documented motor deficits at enrollment.

IV. To prospectively evaluate and compare the quality of life among patients treated with selumetinib or CV.

V. To prospectively evaluate and compare the cognitive, social, emotional, and behavioral functioning of patients with NF1-associated LGG treated with either selumetinib or CV.

EXPLORATORY OBJECTIVES:

I. To evaluate optical coherence tomography (OCT) measures of retinal axon and ganglion cell thickness as a marker of treatment response in previously untreated NF1-associated LGG within the optic pathway.

II. To compare novel, semi-automated volumetric magnetic resonance imaging (MRI) measures to traditional measurements of treatment response (bi-dimensional MRI measurements) in NF1-associated optic pathway tumors.

III. To obtain paired blood and tumor tissue to be banked for future NF1-LGG biology studies involving comprehensive molecular analysis, including but not limited to whole exome and ribonucleic acid (RNA) sequencing.

OUTLINE: Patients are randomized to 1 of 2 arms.

ARM I:

INDUCTION: Patients receive carboplatin intravenously (IV) over 60 minutes on days 1, 8, 15, 22, 43, 50, 57, and 64 and vincristine IV or IV push over 1 minute on days 1, 8, 15, 22, 29, 36, 43, 50, 57, and 64 in the absence of disease progression or unacceptable toxicity. Patients also undergo MRI during screening and on study.

MAINTENANCE: Patients receive carboplatin IV over 60 minutes on days 1, 8, 15, and 22 and vincristine IV or IV push over 1 minute on days 1, 8, and 15. Treatment repeats every 6 weeks for 8 cycles in the absence of disease progression or unacceptable toxicity. Patients also undergo MRI on study and during follow-up.

ARM II: Patients receive selumetinib sulfate orally (PO) twice daily (BID) on days 1-28. Treatment is continuous and repeats every 28 days for 27 cycles in the absence of disease progression or unacceptable toxicity. Patients also undergo MRI throughout the trial.

After completion of study treatment, patients are followed up with MRIs and physical exams every 3 months for 1 year, every 6 months for 2 years, and then once yearly for up to 10 years.

Inclusion Criteria

• Patients must be >= 2 years and =< 21 years at the time of enrollment
• Patients must have a body surface area (BSA) of >= 0.5 m^2 at enrollment
• Patients must have neurofibromatosis type 1 (NF1) based on clinical criteria and/or germline genetic testing
• Patients must be newly diagnosed or have previously diagnosed NF-1 associated LGG that has not been treated with any modality other than surgery
• For patients with optic pathway gliomas (OPGs):
  • Newly-diagnosed patients with OPG are eligible if there are neurologic symptoms (including visual dysfunction, as defined below) or other exam findings associated with the tumor
  • Previously-diagnosed patients with OPG are eligible if they have new or worsening neurologic symptoms (including visual dysfunction, as defined below) or have tumor growth
  • For both newly-diagnosed and previously-diagnosed OPG, the patient may be eligible, irrespective of whether there has been tumor growth or other neurological symptoms or worsening, if they meet at least one of the following visual criteria:
    • Visual worsening, defined as worsening of visual acuity (VA) or visual fields (VF) documented within the past year (by examination or history); OR
    • Significant visual dysfunction (defined as VA worse than normal for age by 0.6 logMAR [20/80, 6/24, or 2.5/10] or more in one or both eyes)
• For patients with LGG in other locations (i.e., not OPGs):
  • Newly-diagnosed patients with LGG are eligible if there are neurologic symptoms or other exam findings associated with the tumor
    • NOTE: Newly-diagnosed patients with LGG without associated neurologic symptoms or exam findings are not eligible
  • Previously-diagnosed patients with LGG are eligible if they have new or worsening neurologic symptoms or have tumor growth
• Although not required, if a biopsy/tumor resection is performed, eligible histologies will include all tumors considered LGG or low-grade astrocytoma (World Health Organization [WHO] grade I and II) by 5th edition WHO classification of central nervous system (CNS) tumors with the exception of subependymal giant cell astrocytoma
• Patients must have two-dimensional measurable tumor >= 1 cm^2
• Patients with metastatic disease or multiple independent primary LGGs are allowed on study
• Creatinine clearance or radioisotope glomerular filtration Rate (GFR) >= 70 mL/min/1.73 m^2 OR a serum creatinine based on age/gender (within 7 days prior to enrollment) as follows:
  • Age; maximum serum creatinine (mg/dL)
  • 2 to < 6 years; 0.8 (male) and 0.8 (female)
  • 6 to < 10 years; 1 (male) and 1 (female)
  • 10 to < 13 years; 1.2 (male) and 1.2 (female)
  • 13 to < 16 years; 1.5 (male) and 1.4 (female)
  • >= 16 years; 1.7 (male) and 1.4 (female)
• Total bilirubin =< 1.5 x upper limit of normal (ULN) for age (within 7 days prior to enrollment) (children with a diagnosis of Gilbert's syndrome will be allowed on study regardless of their total and indirect [unconjugated] bilirubin levels as long as their direct [conjugated] bilirubin is < 3.1 mg/dL)
• Serum glutamate pyruvate transaminase (SGPT) (alanine aminotransferase [ALT]) =< 3 x upper limit of normal (ULN) = 135 U/L (within 7 days prior to enrollment). For the purpose of this study, the ULN for SGPT is 45 U/L
• Albumin >= 2 g/dL (within 7 days prior to enrollment)
• Left ventricular ejection fraction (LVEF) >= 53% (or institutional normal; if the LVEF result is given as a range of values, then the upper value of the range will be used) by echocardiogram (within 4 weeks prior to enrollment)
• Corrected QT (QTc) interval =< 450 msec by electrocardiography (EKG) (within 4 weeks prior to enrollment)
• Absolute neutrophil count >= 1,000/uL (unsupported) (within 7 days prior to enrollment)
• Platelets >= 100,000/uL (unsupported) (within 7 days prior to enrollment)
• Hemoglobin >= 8 g/dL (may be supported) (within 7 days prior to enrollment)
• Patients with a known seizure disorder should be stable and should have not experienced a significant increase in seizure frequency within 2 weeks prior to enrollment
• Patients 2-17 years of age must have a blood pressure that is =< 95th percentile for age, height, and gender at the time of enrollment. Patients >= 18 years of age must have a blood pressure =< 130/80 mmHg at the time of enrollment (with or without the use of antihypertensive medications).
  • Note: Adequate blood pressure can be achieved using medication for the treatment of hypertension
• All patients must have ophthalmology toxicity assessments performed within 4 weeks prior to enrollment
• For all patients, an MRI of the brain (with orbital cuts for optic pathway tumors) and/or spine (depending on the site(s) of primary disease) with and without contrast must be performed within 4 weeks prior to enrollment
• For patients who undergo a surgery on the target tumor (not required), a pre- and post-operative* MRI of the brain (with orbital cuts for optic pathway tumors) or spine (depending on the site(s) of primary disease) with and without contrast must also be performed within 4 weeks prior to enrollment
  • The post-operative MRIs should be performed ideally within 48 hours after surgery if possible
• 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 must have the ability to swallow whole capsules
• Patients must have receptive and expressive language skills in English or Spanish to complete the quality of life (QOL) and neurocognitive assessments
• 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.

Other inclusion criteria may apply

Exclusion Criteria

• Patients must not have received any prior tumor-directed therapy including chemotherapy, radiation therapy, immunotherapy, or bone marrow transplant. Prior surgical intervention is permitted
• Patients with a concurrent malignancy or history of treatment (other than surgery) for another tumor within the last year are ineligible
• Patients may not be receiving any other investigational agents
• Patients with any serious medical or psychiatric illness/ condition, including substance use disorders likely in the judgement of the investigator to interfere or limit compliance with study requirements/treatment are not eligible
• Patients who, in the opinion of the investigator, are not able to comply with the study procedures are not eligible
• Female patients who are pregnant are not eligible 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 are not eligible
• Sexually active patients of reproductive potential who have not agreed to use an effective contraceptive method for the duration of their study participation and for 12 weeks after stopping study therapy are not eligible
  • Note: Women of child-bearing potential and males with sexual partners who are pregnant or who could become pregnant (i.e., women of child-bearing potential) should use effective methods of contraception for the duration of the study and for 12 weeks after stopping study therapy to avoid pregnancy and/or potential adverse effects on the developing embryo
• Cardiac conditions:
  • Known genetic disorder that increases risk for coronary artery disease. Note: The presence of dyslipidemia in a family with a history of myocardial infarction is not in itself an exclusion unless there is a known genetic disorder documented
  • Symptomatic heart failure
  • New York Heart Association (NYHA) class II-IV prior or current cardiomyopathy
  • Severe valvular heart disease
  • History of atrial fibrillation
• Ophthalmologic conditions:
  • Current or past history of central serous retinopathy
  • Current or past history of retinal vein occlusion or retinal detachment
  • Patients with uncontrolled glaucoma\
    • If checking pressure is clinically indicated, patients with intraocular pressure (IOP) > 22 mmHg or ULN adjusted by age are not eligible
  • Ophthalmological findings secondary to long-standing optic pathway glioma (such as visual loss, optic nerve pallor, or strabismus) or longstanding orbito-temporal plexiform neurofibroma (PN), such as visual loss, strabismus) will NOT be considered a significant abnormality for the purposes of the study
• Treatments and/or medications patient is receiving that would make her/him ineligible, such as:
  • Supplementation with vitamin E greater than 100% of the daily recommended dose. Any multivitamin containing vitamin E must be stopped prior to study enrollment even if less than 100% of the daily recommended dosing for vitamin E 
  • Surgery within 2 weeks prior to enrollment, with the exception of surgical placement for vascular access or cerebrospinal fluid (CSF) diverting procedures such as endoscopic third ventriculostomy (ETV) and ventriculo-peritoneal (VP) shunt.
    • Note: Patients must have healed from any prior surgery prior to enrollment
• Patients who have an uncontrolled infection are not eligible

Other exclusion criteria may apply

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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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Study Description

This research is being done to try to find new combinations of treatment that may be better for treating patients with this disease. It is not clear however if these treatments can offer better results than standard treatment.

The study uses a "pick the winner" design to facilitate efficient screening of novel combination treatment regimens and select those meeting pre-specified criteria for testing in the phase III setting. All novel treatment options will be compared against the standard treatment for this disease: rituximab plus gemcitabine, dexamethasone, and cisplatin (R-GDP).

Inclusion Criteria

• Patients with histologic diagnosis for one of the following histologies according to the World Health Organization: documented at initial diagnosis or at relapse:
  • Diffuse large cell lymphoma, B-cell (includes primary mediastinal B-cell lymphoma, T-cell rich B-cell lymphoma);
  • Previous indolent lymphoma (follicular lymphoma, marginal zone lymphoma, including extranodal MALT lymphoma, lymphoplasmacytoid lymphoma) with transformation to diffuse large B-cell lymphoma at most recent relapse (biopsy proof of transformation is mandatory);
  • Unclassifiable B-cell lymphoma with indeterminate features between diffuse large B-cell lymphoma and Burkitt lymphoma.
• Biopsy proof of disease at initial diagnosis is mandatory. A repeat biopsy in primary refractory disease is preferred but not mandatory to confirm progressive disease. A biopsy at relapse is preferred but not mandatory. Participating centres must designate a local reference expert pathologist who will confirm the diagnosis for the patients enrolled at that centre.
• Patients must be CD20+ in order to be eligible for the study.
• Clinically and/or radiologically measurable disease (one site bidimensionally measurable). Measurements/ evaluations must be done within 28 days prior to randomization.
• Prior FDG-PET scan, if done at baseline, must be positive (known FDG-avid lymphoma)
• Patients with de novo aggressive B-cell lymphoma must have relapsed or progressed, or have refractory disease, after 1 prior line of therapy (R-CHOP chemotherapy or equivalent). Patients with histological transformation from low grade lymphoma may have had up to 3 prior treatment regimens. Patients with transformed low grade lymphoma treated with a non-anthracycline regimen may be enrolled at investigator discretion.
• Patient age is ≥16 years. Patients older than 65 years of age are not recommended for this study.
• ECOG performance status of 0, 1 or 2.
• Patient must be considered fit for intensive chemotherapy and ASCT, and an appropriate candidate to receive second-line salvage chemotherapy and ASCT.
• Life expectancy > 90 days.
• Laboratory Requirements: (must be done within 14 days of randomization)
  • Hematology
    • Granulocytes (AGC) ≥ 1.0 x 10^9/L (independent of growth factor support)
    • Platelets ≥ 100 x 10^9/L (50 x 10^9/L if bone marrow involvement by lymphoma, independent of transfusion support)
  • Biochemistry
    • AST and ALT ≤ 3x ULN (if both are done, both must be <3x UNL)
    • Serum total bilirubin ≤ 1.5x ULN (≤ 5x ULN if Gilberts Disease)
    • Serum Creatinine ≤ 1.5x ULN (or estimated GFR of ≥ 40 mL/min/1.73m2 using Cockcroft Gault formula).
• Women must be post-menopausal, surgically sterile or use reliable forms of contraception while on study. Women of child bearing potential and men who are sexually active must be practicing a highly effective method of birth control during and after the study consistent with local regulations regarding the use of birth control methods for subjects participating in clinical trials. Men must agree to not donate sperm during and after the study. These restrictions apply for 12 months (1 year) after the last dose of study drug.
  • Women of childbearing potential must have a pregnancy test taken (either by serum beta-human chorionic gonadotropin [B-hCG]) or urine) and proven negative within 14 days prior to randomization. Women who are pregnant or breastfeeding are ineligible for this study.
• Patient consent must be appropriately obtained in accordance with applicable local and regulatory requirements. Each patient must sign a consent form prior to enrollment in the trial to document their willingness to participate.
• Patients must be accessible for treatment and follow up. Patients randomized on this trial must be treated and followed at the participating centre. This implies there must be reasonable geographical limits (for example: 1 ½ hour's driving distance) placed on patients being considered for this trial. Investigators must assure themselves the patients randomized on this trial will be available for complete documentation of the treatment, response assessment, adverse events, and follow-up.

In accordance with CCTG policy, protocol treatment is to begin within 5 working days of patient randomization.

Exclusion Criteria

• Patients with a history of other malignancies, except: adequately treated non-melanoma skin cancer and superficial bladder cancer, curatively treated in-situ cancer of the cervix or breast, or localized excised prostate cancer, other solid tumours curatively treated with no evidence of disease for ≥ 3 years.
• Active and uncontrolled central nervous system involvement, meningeal or parenchymal. Patients with CNS disease at initial presentation and who are in a CNS CR at the time of relapse are eligible. MRI scanning and / or lumbar puncture should be performed if there is clinical suspicion of active CNS disease.
• Major surgery performed within 10 days of randomization.
• Known history of human immunodeficiency virus (HIV), active Hepatitis C Virus infection, active Hepatitis B Virus infection or any uncontrolled active systemic infection requiring intravenous (IV) antibiotics. Patients with Hepatitis B serology suggestive of infection are eligible if they are HBV DNA negative and concurrently treated with anti-viral therapy. Patients with a past history of hepatitis C who have eradicated the virus are eligible.
• Patients who have been vaccinated with live, attenuated vaccines within 4 weeks of randomization.
• Clinically significant cardiovascular disease such as uncontrolled or symptomatic arrhythmias, congestive heart failure, or myocardial infarction within 6 months of Screening, or any Class 3 (moderate) or Class 4 (severe) cardiac disease as defined by the New York Heart Association Functional Classification.
• Any serious active disease or co-morbid medical condition, including psychiatric illness, judged by the local investigator to preclude safe administration of the planned protocol treatment or required follow-up.
• Any other serious intercurrent illness, life threatening condition, organ system dysfunction, or medical condition judged by the local investigator to compromise the subject's safety, interfere with the absorption or metabolism of selinexor tablets, or preclude safe administration of the planned protocol treatment or required follow-up, including (for example):
  • active, uncontrolled bacterial, fungal, or viral infection;
  • clinically significant cardiac dysfunction or cardiovascular disease.
• Pregnant or lactating females, or women of childbearing potential not willing to use an adequate method of birth control for the duration of the study.
• Patients are not eligible if they have a known hypersensitivity to the study drugs or their components.

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Study Description

Brief Summary:

The study evaluates CLR 131 in children, adolescents, and young adults with relapsed or refractory High Grade Glioma (HGG) for which there are no standard treatment options with curative potential.

Part A for Solid Tumors, Lymphoma, and Malignant  Brain Tumors is now closed. This study is exclusively enrolling on Part B for HGG

Detailed Description:

Even with standard, highly toxic multimodality therapies and salvage regimen, most pediatric patients with primary metastatic or relapsed solid tumors are confronted with a poor prognosis. For these patients there is currently no accepted successful treatment regimen. There is a need for new drugs, including targeted radiopharmaceuticals, preferably with cancer-specific uptake and broad applicability for these rare pediatric malignancies.

CLR 131 is a radioiodinated therapeutic that exploits the selective uptake and retention of phospholipid ethers (PLEs) by malignant cells. Cellectar Biosciences' novel cancer-targeted small-molecule compound (CLR1404) is radiolabeled with the isotope iodine-131 (I-131). CLR 131 has demonstrated tumor selective uptake across numerous adult and pediatric cancer cell types. Therapeutic efficacy has been demonstrated in various pediatric and adult-type cancer xenograft models, confirming the ability of CLR 131 to target tumors.

Based on the critical unmet medical need for effective agents with novel mechanisms of action in relapsed pediatric cancers and initial preclinical and clinical experience with radioiodinated CLR1404, Cellectar Biosciences has chosen to assess CLR 131 in a phase 1 pediatric trial.

Inclusion Criteria

• Previously confirmed (histologically or cytologically) HGG that is clinically or radiographically suspected to be relapsed, refractory, or recurrent. Patients with DIPG are exempt from histologic verification if they have typical MRI findings of DIPG (i.e., hypo- or isointense on T1-weighted imaging, hyperintense on FLAIR or T2-weighted imaging, epicenter in the pons, greater than 50% of pons involved) and the risk of tumor biopsy is prohibitive. Patients with a diagnosis of ependymoma may enroll with prior Sponsor approval.
  • Refractory is defined as:
    • Lack of response (stable disease) or disease progression while on therapy
    • Disease progression within 3 months of cessation of therapy
• Patient is ≥ 10 years and ≤ 25 years of age at time of consent/assent
• Patients ≥ age 16 years must have a Karnofsky performance status of ≥ 60. Patients < age 16 years must have a Lansky performance status of ≥ 60
• Patients must meet the following lab criteria:
  • Platelets ≥ 75,000/µL [75 x 10⁹ /L] (last transfusion, if any, must be at least 1 week prior to study registration, and, unless deemed medically necessary, no transfusions are allowed between registration and dosing)
  • Absolute neutrophil count ≥ 750/µL [0.75 x10⁹/L]
  • Hemoglobin ≥ 8 g/dL [80 g/L] (last transfusion must be at least 1 week prior to study registration, and, unless deemed medically necessary, no transfusions are allowed between registration and dosing)
  • Using the bedside Schwartz formula [Schwartz 2009], estimated GFR (creatinine clearance) > 60 ml/min/1.73m²
  • Alanine aminotransferase < 3 × ULN
  • Bilirubin < 2 × ULN
• At least 1 measurable intracranial lesion with longest diameter of at least 10 mm on any imaging sequence.
• Patients with previously known neurological deficits must be clinically stable for one week prior to enrollment and be able to complete all study related procedures
• If patient receives steroids for neurological symptom control, the dose must be stable (unchanged for one week prior to enrollment) or on a steroid tapering regimen. Initiation of steroids per routine care immediately prior to CLR 131 dosing is acceptable.
• Patient or his or her legal representative is judged by the Investigator to have the initiative and means to be compliant with the protocol.
• Patient or his or her legal representative has the ability to read, understand, and provide written informed consent for the initiation of any study-related procedures.
• Female patients of childbearing potential must have a negative pregnancy test at screening and within 24 hours of dosing. It is recommended that female caregivers of childbearing potential have a negative pregnancy test within one week of dosing.
• Patients of childbearing potential must practice an effective method of birth control while participating on this study to avoid possible harm to the fetus.

Exclusion Criteria

• Antitumor therapy or investigational therapy, within three-half-lives of the agent preceding the present study. For certain types of radiation (craniospinal, total abdominal, whole lung [spot irradiation to skull-based metastases is not considered craniospinal radiation for the purposes of this study]), at least 3 months must have elapsed. Palliative focal radiation to non-target lesions should be completed at least 2 weeks prior to dosing. NOTE: Patients participating in non-interventional clinical trials (i.e., non-drug) are allowed to participate in this trial.
• History of hypersensitivity to thyroid protection medication (e.g., potassium iodide, Lugol’s solution, etc.)
• Any other concomitant serious illness or organ system dysfunction (including cardiac and pulmonary dysfunction) that in the opinion of the Investigator would either compromise patient safety or interfere with the evaluation of the safety of the test drug.
• Major surgery within 6 weeks of enrollment unless delay in therapy poses unacceptable risk to the patient due to clinical progression (enrollment of such patients should be discussed with Medical Monitor).
• Known history of human immunodeficiency virus or uncontrolled, serious, active infection.
• Pregnancy or breastfeeding