Canadian clinical trial registry

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Study Description

Phase 1 dose escalation will determine the maximum tolerated dose (MTD) and recommended Phase 2 dose (RP2D) of SNDX-5613 in patients with acute leukemia. There are 3 arms in Phase 1 as follows: 

• Arm A: Patients not receiving any strong cytochrome P450 3A4 (CYP3A4) inhibitor/ inducers.
• Arm B: Patients receiving strong cytochrome P450 3A4 (CY3A4) inhibitors for antifungal prophylaxis.
• Arm C: Patients receiving SNDX-5613 in combination with cobicistat.

In Phase 2, patients will be enrolled in 3 indication-specific expansion cohorts to determine the efficacy, short- and long-term safety, and tolerability of SNDX-5613. There are 3 cohorts in Phase 2 as follows: 

• Cohort 2A: Patients with MLLr acute lymphoblastic leukemia (ALL)/mixed phenotype acute leukemia (MPAL).
• Cohort 2B: Patients with MLLr AML.
• Cohort 2C: Patients with NPM1c AML.

Inclusion Criteria

Patients must have active acute leukemia (bone marrow blasts ≥ 5% or reappearance of blasts in peripheral blood) as defined by the National Comprehensive Cancer Network (NCCN) in the NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines®) for Acute Lymphoblastic Leukemia (Version 1.2020) and Acute Myeloid Leukemia (Version 3.2020).

• Phase 1: Documented R/R acute leukemia harboring MLL rearrangement or NPM1c mutation.

  • Arm A: Patients not receiving any strong cytochrome P450 3A4 (CYP3A4) inhibitor/inducers.
  • Arm B: Patients receiving strong cytochrome P450 3A4 inhibitors for antifungal prophylaxis.
  • Arm C: Patients receiving SNDX-5613 in combination with cobicistat.

• Phase 2:

  • Cohort 2A: Documented R/R ALL/MPAL with an MLLr translocation.
  • Cohort 2B: Documented R/R AML with an MLLr translocation.
  • Cohort 2C: Documented R/R AML with NPM1c.
• WBC must be below 50,000/ μL at time of enrollment. Patients may receive cytoreduction prior to enrollment.
• Male or female patient aged ≥30 days old.
• Eastern Cooperative Oncology Group (ECOG) performance status score 0-2 or Karnofsky/Lansky score ≥40.
• Any prior treatment-related toxicities resolved to ≤Grade 1 prior to enrollment, with the exception of ≤Grade 2 neuropathy or alopecia.
• Radiation Therapy: At least 60 days from prior total body irradiation (TBI), craniospinal radiation and/or ≥50% radiation of the pelvis, or at least 14 days from local palliative radiation therapy (small port).
• Stem Cell Infusion: At least 60 days must have elapsed from HSCT and at least 4 weeks (from first dose) must have elapsed from donor lymphocyte infusion (DLI) without conditioning.
• Immunotherapy: At least 42 days since prior immunotherapy, including tumor vaccines and checkpoint inhibitors, and at least 21 days since receipt of chimeric antigen receptor therapy or other modified T cell therapy.
• Myelosuppressive Chemotherapy: At least 14 days since the completion of cytotoxic/myelosuppressive therapy.
• Hematopoietic Growth Factors: At least 7 days since the completion of therapy with short-acting hematopoietic growth factors and 14 days with long-acting growth factors.
• Biologics: At least 7 days or 5 half-lives, whichever is longer, since the completion of therapy with a biologic agent.
• Steroids: At least 7 days since systemic glucocorticoid therapy, unless receiving physiologic dosing (equivalent to ≤10 mg prednisone daily) or cytoreductive therapy.
• Adequate organ function.
• If of childbearing potential, willing to use a highly effective method of contraception or double barrier method from the time of enrollment through 120 days following the last study drug dose.

Exclusion Criteria

• Active diagnosis of acute promyelocytic leukemia.
• Isolated extramedullary relapse.
• Known CNS involvement (cytologic or radiographic).
• Detectable human immunodeficiency virus (HIV) viral load within the previous 6 months. Patients with a known history of HIV 1/2 antibodies must have viral load testing prior to study enrollment.
• Hepatitis B or C.
• Pregnant or nursing women.
• Cardiac Disease: Any of the following within the 6 months prior to study entry: myocardial infarction, uncontrolled/unstable angina, congestive heart failure (New York Heart Association Classification Class ≥II), life-threatening, uncontrolled arrhythmia, cerebrovascular accident, or transient ischemic attack.
  • - QTc >450 msec for males and QTc >450 msec for females.

• Gastrointestinal Disease:

  • Chronic diarrhea or other gastrointestinal issue that might affect oral drug absorption or ingestion (ie, short-gut syndrome, gastroparesis, etc).
  • Cirrhosis with a Child-Pugh score of B or C.
• Graft-Versus-Host Disease (GVHD): Signs or symptoms of acute or chronic GVHD >Grade 0 within 4 weeks of enrollment. All transplant patients must have been off all systemic immunosuppressive therapy and calcineurin inhibitors for at least 4 weeks prior to enrollment. Patients may be on physiological doses of steroids.
• Concurrent malignancy in the previous 2 years with the exception of basal cell carcinoma of the skin, squamous cell carcinoma of the skin, or carcinoma in situ (eg, breast carcinoma, cervical cancer in situ, melanoma in situ) treated with potentially curative therapy. Concurrent malignancy must be in complete remission or no evidence of disease during this timeframe.
• Participation in another therapeutic interventional clinical study within 30 days of enrollment.

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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.

With a recent amendment, stable patients who have been on study for over 2 years may discuss the option of a drug treatment holiday with their clinical team. 

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 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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Centres

Study Description

This study will evaluate the safety and efficacy of favezelimab (MK-4280) in combination with pembrolizumab (MK-3475) using a non-randomized study design in participants with the following hematological malignancies:

• classical Hodgkin lymphoma (cHL)
• diffuse large B-cell lymphoma (DLBCL)
• indolent non-Hodgkin lymphoma (iNHL)

This study will also evaluate the safety and efficacy of pembrolizumab or favezelimab administered as monotherapy in participants with cHL using a 1:1 randomized study design.

The study will have 2 phases: a safety lead-in and an efficacy expansion phase. The recommended Phase 2 dose (RP2D) will be determined in the safety lead-in phase by evaluating dose-limiting toxicities.

There is no primary hypothesis for this study.

Inclusion Criteria

• Has measurable disease, defined as ≥1 lesion that can be accurately measured in 2 dimensions with diagnostic quality cross sectional anatomic imaging (computed tomography or magnetic resonance imaging). Minimum measurement must be >15 mm in the longest diameter or >10 mm in the short axis
• Is able to provide a core or excisional tumor biopsy for biomarker analysis from an archival (within 3 months) or newly obtained biopsy at screening
• Has a performance status of 0 or 1 on the Eastern Cooperative Oncology Group (ECOG)

Exclusion Criteria

• Has known clinically active central nervous system (CNS) involvement
• Has received prior therapy with an anti-lymphocyte activation gene-3 (LAG-3) antibody
• Has received chimeric antigen receptors (CAR)-T-cell therapy for cHL and DLBCL Cohorts
• Has received prior anticancer therapy or thoracic radiation therapy within 14 days before the first dose of study treatment
• Has ≥Grade 2 non-hematological residual toxicities from prior therapy
• Has had a prior anticancer monoclonal antibody within 4 weeks prior to study Day 1 or who has not recovered (i.e., ≤Grade 1 or at baseline) from AEs due to agents administered ≥4 weeks earlier
• Has received a live vaccine within 30 days prior to first dose of study treatment. Administration of killed vaccines are allowed
• Has received an investigational agent or used an investigational device within 4 weeks prior to intervention administration
• Has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy or any other form of immunosuppressive therapy within 7 days prior the first dose of study drug
• Has a known additional malignancy that is progressing or requires active treatment with the exception of basal cell carcinoma of the skin, squamous cell carcinoma of the skin, or in situ cervical cancer that has undergone potentially curative therapy
• Has active autoimmune disease that has required systemic treatment in past 2 years (i.e., with use of disease modifying agents, corticosteroids or immunosuppressive drugs)
• Has a history of (non-infectious) pneumonitis that required steroids or current pneumonitis
• Has an active infection requiring intravenous systemic therapy
• Has a known history of human immunodeficiency virus (HIV) infection
• Has known, active hepatitis B or hepatitis C infection
• Is pregnant or breastfeeding, or expecting to conceive or father children within the projected duration of the study, starting with the screening visit through 120 days after the last dose of study treatment
• Has had an allogeneic hematopoetic stem cell/solid organ transplantation within the last 5 years

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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, dexemthasone, 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

The objective of this study is to evaluate the efficacy of plixorafenib in participants with locally advanced or metastatic solid tumors, or recurrent or progressive primary central nervous system (CNS) tumors harboring BRAF fusions, or in participants with recurrent high-grade glioma (HGG) harboring BRAF V600E mutation. This will be conducted as two single arm open-label subprotocols (F8394-201A; F8394-201B) under one master protocol.

Inclusion Criteria

Group A: 

• Male and female, ≥10 years of age, and weighing ≥30 kg.
• Histologic diagnosis of a solid tumor or primary CNS tumor.
• Documentation of BRAF gene fusion in tumor and/or blood detected by an analytically validated test by DNA sequencing or RNA (transcriptome) sequencing at CLIA or CLIA-equivalent laboratory or sponsor-designated central laboratory.
• Have an archival tissue sample at less than 24 months from date of screening available with sufficient tumor for central next generation sequencing (NGS) testing and biomarker analyses, or >24 months if the participant has never received targeted therapy. If an archival tissue sample is not available, a newly obtained (before treatment) tumor biopsy may be submitted instead.
• Consent to provide scan(s) prior to baseline to assess change in tumor trajectory (at least 2 preferred). For participants with LGG, every effort should be made to provide 3 to 4 pre-baseline scans to the central imaging vendor whenever feasible.
• Received all available standard therapy, is intolerant to available therapies, or the investigator has determined that treatment with standard therapy is not appropriate.
• All adverse events related to prior therapies (chemotherapy; radiotherapy; surgery) must have resolved to Grade 1 or baseline except for
  • Alopecia (Grade ≤2)
  • Sensory neuropathy (Grade ≤2)
  • Other adverse events that have resolved to Grade ≤2 that, according to the clinical judgment of the investigator, do not constitute a safety risk to the participant.

Group B: 

• Male and female, ≥10 years of age, and weighing ≥30 kg.
• Histological diagnosis of a primary CNS tumor, including but not limited to the following:
  • Adults (≥18 years) with Grade 1-4 glioma or glioneuronal tumor (including glioblastoma, anaplastic astrocytoma, high grade astrocytoma with piloid features, pilocytic astrocytoma, gliosarcoma, anaplastic pleomorphic xanthoastrocytoma, anaplastic oligodendroglioma, anaplastic oligoastrocytoma, not otherwise specified [NOS], ganglioglioma, or recurrent LGG).
  • Pediatric patients (10-17 years of age) with a Grade 3 or 4 glioma or glioneuronal tumor, including those with a prior, histologically confirmed, diagnosis of a low-grade glioma or glioneuronal tumor and now have radiographic or histopathological findings consistent with WHO [2021] Grade 3 or 4 primary CNS tumor.
  • Participants must have unresectable, locally advanced or metastatic disease that:
    • Had prior treatment with radiotherapy and/or first-line chemotherapy or concurrent chemoradiation therapy OR
    • Is intolerant to available therapies OR iii. The investigator has determined that treatment with standard therapy is not appropriate.
    • Note: Participants who have a WHO Grade 3 or 4 glioma for whom chemotherapy and/or radiotherapy is not considered standard of care may remain eligible for the study. Consult the Medical Lead to discuss and determine if participant is eligible for enrollment.
• Documented BRAF V600E mutation in tumor and/or blood detected by an analytically validated test by NGS or polymerase chain reaction (PCR) methods and locally approved assays at CLIA or CLIA-equivalent laboratory approved by sponsor or sponsor-designated central test. Sponsor review of the report is required, and testing of BRAF alteration is required at sponsor's central laboratory.
• An archival tissue sample at less than 24 months from date of screening available with sufficient tumor for central NGS testing* and biomarker analyses, or >24 month if the participant has never received a targeted therapy, or fresh biopsy is required if the archival sample is not available for retrospective confirmation test. Tissue obtained most proximal to initiating this subprotocol is preferred.
• Measurable disease based upon RANO HGG for high-grade tumors or RANO LGG for the low grade tumors, as determined by the radiographic BICR.
• All adverse events related to prior therapies (eg, chemotherapy, radiotherapy, surgery) must have resolved to Grade 1 or baseline except for:
  • Alopecia (Grade ≤2)
  • Sensory neuropathy (Grade ≤2)
  • Other adverse events that have resolved to Grade ≤2 that, according to the clinical judgment of the investigator, do not constitute a safety risk to the participant
• Participants who are receiving corticosteroid treatment must be on a stable or decreasing dose of ≤8 mg/day of dexamethasone or equivalent corticosteroid treatment for 7 days prior to first dose of study treatments.

Exclusion Criteria

Group A: 

• Participants with known co-occurring NF1 alteration and/or RAS-related mutations.
• Participants with evidence of subclonal mutations or heterogeneity that are indicative of a prior treatment effect instead of a driver mutation.
• Prior treatment with RAF/BRAF inhibitors active for Class 2 BRAF alterations for advanced unresectable or metastatic disease (including but not limited to tovorafenib [formerly known as DAY 101, TAK 580, and MLN 2480], KIN-2787, BGB-3245, and CFT1946).
  • Note: Participants with pediatric-type LGGs (molecular classification by WHO2021; diagnosed at ≤25 years of age) who had received prior treatment(s) with RAF/BRAF inhibitors are eligible for enrollment, provided there was no evidence of tumor progression on that therapy or within 4 weeks of discontinuation, based upon radiographic assessment.
• Prior treatment with a MEK inhibitor.
• Tyrosine kinase inhibitor(s) and/or targeted therapies are allowed (other than BRAF/MAPK pathway inhibitors per Exclusion Criteria 3 and 4) and will be restricted to no more than the number of lines of therapy that are consistent with standard treatment guidelines. NOTE: There is no restriction on the number of lines of chemotherapy or immunotherapy.
• Malignancy with co-occurring activating RAS mutation(s) at any time.
• Uncontrolled intercurrent illness that would limit compliance with study requirements.
• Current or planned participation in a study of an investigational agent or device.
• Have impairment of gastrointestinal (GI) function or GI disease that may significantly alter the absorption of oral plixorafenib or cobicistat (such as ulcerative diseases, uncontrolled nausea, vomiting, diarrhea, malabsorption syndrome, and small bowel resection).
• Are currently receiving (within 7 days of Cycle 1 Day 1) or are planning to receive during participation:
  • Agents that are known strong inducers or inhibitors of CYP3A4 (other than cobicistat). Restrictions include foods or herbal medications, including grapefruit juice and grapefruit/grapefruit related citrus fruits (eg, Seville oranges, pomelos), and St. John's Wort.
  • Agents that are contraindicated with cobicistat. Note: For participants with no other option except agents with potential drug interactions with cobicistat, but which are not contraindicated, the dose of that agent must be altered or the regimen must follow the cobicistat prescribing information and be approved by the medical monitor.

Group B: 

• Prior treatment with BRAF, ERK, and/or MEK inhibitor(s).
• Known or suspected neurofibromatosis-1 (NF-1) and/or Ras related gene alterations.
• Uncontrolled intercurrent illness that would limit compliance with study requirements.
• Active infection requiring systemic therapy.
• Current or planned participation in a study of an investigational agent or device.
• Have impairment of gastrointestinal (GI) function or GI disease that may significantly alter the absorption of oral plixorafenib or cobicistat (such as ulcerative diseases, uncontrolled nausea, vomiting, diarrhea, malabsorption syndrome, small bowel resection).
• Grade ≥ 2 changes in AST, ALT, gamma-glutamyl transaminase (GGT), or bilirubin attributed to prior immune checkpoint inhibitor treatment are exclusionary, even if resolved.
• Are currently receiving (within 7 days of Cycle 1 Day 1) or are planning to receive during participation:
  • Agents that are known strong inducers or inhibitors of CYP3A4 (other than cobicistat). Restrictions include foods or herbal medications, including grapefruit juice, grapefruit/grapefruit related citrus fruits (eg, Seville oranges, pomelos), and St. John's Wort.
  • Agents that are contraindicated with cobicistat Note: For participants with no other option except agents with potential drug interactions with cobicistat, but which are not contraindicated, the dose of that agent must be altered or the regimen must follow the cobicistat prescribing information and be approved by the medical monitor.
• Progressively worsening in frequency or severity seizures indicative of rapid tumor progression, or seizures poorly controlled with available therapy.

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Centres

Study Description

This is a Phase 1b/2, multi-center, open label umbrella study of patients ≥12 years of age with recurrent or progressive solid (including CNS) tumors with alterations in the key proteins of the RAS/RAF/MEK/ERK pathway, referred to as the MAPK pathway. Study DAY101-102 (master study) and sub-studies will consist of a screening period, a treatment period, a safety follow-up period, and a long-term follow-up period where survival, status and subsequent anticancer therapies are collected.

DAY101 will be evaluated alone (sub-study A) or combined with a different targeted therapy (sub-study B) in each sub-study. The Phase 1b part of each sub-study will evaluate the safety of the combination and select the dose for the Phase 2 part. The Phase 2 part of each sub-study will evaluate anti-tumor activity.

Inclusion Criteria

• Signed assent for patients ≥ 12 up to < 18 years of age
• Patients must have a histologically confirmed diagnosis of non-hematological tumor with concurrent MAPK pathway alteration as assessed by sequencing, PCR, FISH, or another clinically accepted molecular diagnostic method recognized by local laboratory or regulatory agency
• Patients must have radiographically-recurrent or radiographically-progressive disease that is measurable using the appropriate tumor response criteria (e.g. RECIST version 1.1)
• Archival tumor tissue (preferably less than 3 years old) or fresh tumor tissue for correlative studies is required
• If brain metastases are present, they must have been previously treated and be stable as assessed by radiographic imaging

Other inclusion criteria may apply

Exclusion Criteria

• Known presence of concurrent activating mutation
• Patients with current evidence or a history of central serous retinopathy (CSR), retinal vein occlusion (RVO)

Substudy A-specific exclusion criterion:

• Prior therapy of any RAS- RAF-, MEK-, or ERK-directed inhibitor therapy

Substudy B-specific exclusion criterion:

• Prior receipt of any Type-II pan-RAF inhibitor therapy (e.g., LXH254/naporafenib, BGB- 283, BGB-3245, belvarafenib)

Other exclusion criteria may apply