A Phase 3 Randomized Non-Inferiority Study of Carboplatin and Vincristine Versus Selumetinib (NSC# 748727) in Newly Diagnosed or Previously Untreated Low-Grade Glioma (LGG) Not Associated With BRAFV600E Mutations or Systemic Neurofibromatosis Type 1 (NF1)

  • End date
    Dec 31, 2026
  • participants needed
  • sponsor
    National Cancer Institute (NCI)
Updated on 24 October 2022
ejection fraction
metastatic disease
glomerular filtration rate
initial diagnosis
residual tumor
neutrophil count
tumor cells
low grade glioma
hypertensive medications
giant cell astrocytoma


This phase 3 trial compares the effect of selumetinib versus the standard of care treatment with carboplatin and vincristine (CV) in treating patients with newly diagnosed or previously untreated low-grade glioma (LGG) that does not have a genetic abnormality called BRAFV600E mutation and is not associated with systemic neurofibromatosis type 1. Selumetinib works by blocking some of the enzymes needed for cell growth and may kill tumor cells. Carboplatin and vincristine are chemotherapy drugs that work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. The overall goal of this study is to see if selumetinib works just as well as the standard treatment of CV for patients with LGG. Another goal of this study is to compare the effects of selumetinib versus CV in subjects with LGG to find out which is better. Additionally, this trial will also examine if treatment with selumetinib improves the quality of life for subjects who take it.



I. To demonstrate that the efficacy of treatment with selumetinib as measured by event-free survival (EFS) is non-inferior compared to treatment with carboplatin/vincristine (CV) in previously-untreated low-grade glioma (LGG) not associated with BRAFV600E mutations or systemic neurofibromatosis type 1 (NF1).


I. To estimate tumor response rates to each regimen of chemotherapy. II. To evaluate visual acuity (VA) outcomes utilizing Teller Acuity Cards (TAC) and HOTV letter acuity testing in previously-untreated optic pathway gliomas (OPGs).

III. To describe the improvement in motor function as measured by the Vineland Scale in children with previously-untreated LGG that have motor deficits at enrollment.

IV. To estimate the difference in EFS and tumor response rate between BRAF rearranged and non-BRAF rearranged patients treated on each chemotherapy regimen.

V. To prospectively evaluate the quality of life of children with LGG not associated with BRAFV600E or systemic NF1 treated with either CV or selumetinib.

VI. To prospectively evaluate the cognitive, social, emotional, and behavioral functioning of children with LGG not associated with BRAFV600E or systemic NF1 treated with either CV or selumetinib.


I. To obtain paired blood and tumor specimens for future biology studies, including studies to correlate genomic drivers to response.

OUTLINE: Patients are randomized to 1 of 2 arms.


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

MAINTENANCE: Patients receive vincristine sulfate IV over 1 minute on days 1, 8, and 15, and carboplatin IV over 60 minutes on days 1, 8, 15, and 22. Treatment repeats every 42 days for up to 8 cycles in the absence of disease progression or unacceptable toxicity.

ARM II: Patients receive selumetinib sulfate orally (PO) twice daily (BID) on days 1-28. Treatment repeats every 28 days for up to 27 cycles in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up every 3 months for year 1, every 6 months for years 2-3, and then annually for years 4-10.

Condition Low Grade Astrocytoma, Low Grade Glioma, Metastatic Low Grade Astrocytoma, Metastatic Low Grade Glioma
Treatment questionnaire administration, quality-of-life assessment, vincristine sulfate, carboplatin, Selumetinib, vincristine, Selumetinib Sulfate
Clinical Study IdentifierNCT04166409
SponsorNational Cancer Institute (NCI)
Last Modified on24 October 2022


Yes No Not Sure

Inclusion Criteria

Patients must have a body surface area (BSA) of >= 0.5 m^2 at enrollment
Patients must have non-neurofibromatosis type 1 (non-NF1) low-grade glioma (LGG) without a BRAFV600E mutation as confirmed by Rapid Central Pathology and Molecular Screening Reviews performed on APEC14B1 (NCT02402244) and that has not been treated with any modality besides surgery. Note: Patients may be newly-diagnosed OR previously diagnosed, and there is no required time frame between biopsy/surgery and treatment initiation
Patients with residual tumor after resection or progressive tumor after initial diagnosis (with or without surgery) who have not received treatment (chemotherapy and/or radiation) are eligible
Patients must have two-dimensional measurable tumor >= 1 cm^2 to be eligible
Eligible histologies will include all tumors considered low-grade glioma or low-grade
Patients with metastatic disease or multiple independent primary LGG are eligible
astrocytoma (World Health Organization [WHO] grade I and II) by 5th edition
WHO classification of central nervous system (CNS) tumors with the exception
Creatinine clearance or radioisotope glomerular filtration rate (GFR) >= 70 mL/min/1.73 m^2 OR a serum creatinine based on age/gender as follows (performed within 7 days prior to enrollment)
Age: Maximum Serum Creatinine (mg/dL)
of subependymal giant cell astrocytoma
to < 6 years: 0.8 mg/dL (male); 0.8 mg/dL (female)
to < 10 years: 1 mg/dL (male); 1 mg/dL (female)
to < 13 years: 1.2 mg/dL (male); 1.2 mg/dL (female)
to < 16 years: 1.5 mg/dL (male); 1.4 mg/dL (female)
>= 16 years: 1.7 mg/dL (male); 1.4 mg/dL (female)
Serum glutamic pyruvic transaminase (SGPT) (alanine aminotransferase [ALT]) =< 135 U/L (performed within 7 days prior to enrollment). For the purpose of this study, the ULN for SGPT is 45 U/L
Albumin >= 2 g/dL (performed within 7 days prior to enrollment)
Total bilirubin =< 1.5 x upper limit of normal (ULN) for age (performed within 7 days
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 (performed within 7 days prior to enrollment)
prior to enrollment) (children with a diagnosis of Gilbert's syndrome will be
Corrected QT (QTc) interval =< 450 msec by electrocardiography (EKG) (performed within 7 days prior to enrollment)
allowed on study regardless of their total and indirect [unconjugated]
Absolute neutrophil count >= 1,000/uL (unsupported) (performed within 7 days prior to enrollment)
Platelets >= 100,000/uL (unsupported) (performed within 7 days prior to enrollment)
bilirubin levels as long as their direct [conjugated] bilirubin is < 3.1
Hemoglobin >= 8 g/dL (may be supported) (performed within 7 days prior to enrollment)
Patients with a known seizure disorder should be stable and should not have 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 (with or without the use of anti-hypertensive medications)
All patients must have ophthalmology toxicity assessments performed within 4 weeks prior to 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 anti-hypertensive medications)
Note for patients of all ages: Adequate blood pressure can be achieved using medication for the treatment of hypertension
For all patients, a magnetic resonance imaging (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
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
All patients have signed an appropriate consent form and Health Insurance Portability and Accountability Act (HIPAA) authorization form (if applicable)
All patients and/or their parents or legal guardians must sign a written informed consent
All patients have been consented and enrolled on APEC14B1 (NCT02402244) followed by enrollment on the ACNS1833 Pre-Enrollment Eligibility Screening (Step 0) on the same day to complete the Rapid Central Review
All institutional, Food and Drug Administration (FDA), and National Cancer Institute (NCI) requirements for human studies must be met

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 with diffuse intrinsic pontine tumors as seen on MRI (> 2/3 of pons involvement on imaging) are not eligible even if biopsy reveals grade I/II histology
Patients may not be receiving any other investigational agents
Patients with any serious medical or psychiatric illness/condition, including substance use disorders or ophthalmological conditions, likely in the judgment of the investigator to interfere or limit compliance with study requirements/treatment
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
Symptomatic heart failure
New York Health Association (NYHA) class II-IV prior or current cardiomyopathy
Severe valvular heart disease
History of atrial fibrillation
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
Surgery within 2 weeks prior to enrollment, with the exception of surgical biopsy, placement of a vascular access device or cerebral spinal fluid (CSF) diverting procedure such as endoscopic third ventriculostomy (ETV) and ventriculoperitoneal (VP) shunt
Note: Patients must have healed from any prior surgery
Patients who have an uncontrolled infection are not eligible
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
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
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