A Phase 2 interventional study of Entrectinib and Cyclophosphamide in High Grade Glioma and CNS Tumor, sponsored by St. Jude Children's Research Hospital. Recruiting at 6 sites in 4 countries. Open to participants aged Up to 3 Years. Per ClinicalTrials.gov, last updated 2026-11-03.
Sponsored by St. Jude Children's Research Hospital · Phase 2, Interventional, and Treatment
This clinical trial tests how well entrectinib works to treat patients less than 3 years of age with NTRK 1/2/3 or ROS1 fused, high grade glioma or other central nervous system (CNS) tumors.
PRIMARY OBJECTIVE
SECONDARY OBJECTIVES
The trial will have 2 cohorts: Cohort 1: patients diagnosed with NTRK1/2/3- or ROS1-fused high-grade glioma (HGG) and Cohort 2: patients diagnosed with NTRK1/2/3- or ROS1-fused CNS tumors other than HGG.
Patients receive entrectinib enterally once daily (QD) on days 1-28 of each cycle. Treatment repeats every 28 days for up to 24 cycles in the absence of disease progression or unacceptable toxicity. Patients requiring bridging therapy prior to starting entrectinib may receive cyclophosphamide intravenously (IV) over 1 hour on day 1, etoposide IV over 1 hour on day 1 and 2, carboplatin IV over 1 hour on day 2, filgrastim subcutaneously (SC) or IV or pegfilgrastim SC on day 3.
A gross total resection or significant debulking may become possible if a response to entrectinib is seen. If surgical resection is performed and a gross total resection is achieved, 24 cycles of entrectinib will be completed, including those before and after surgery.
After treatment, patients will be followed for 5 years.
1,452 studies on the registry are indexed under Glioma; 349 are open to participants now.
This study's planned enrollment of 52 is above the median of 32 across 1,075 interventional studies indexed under Glioma.
Browse Glioma studies →St. Jude Children's Research Hospital is the lead sponsor of 440 studies on the registry; 102 are open to participants now.
Of its 61 completed or terminated interventional studies of FDA-regulated products, 37 (61%) have results posted.
Counted across the registry records on this site, refreshed daily.
Inclusion Criteria: Screening Phase
Exclusion Criteria: Screening Phase
Inclusion Criteria: COHORT 1
Adequate renal function as defined by the following age-based serum creatinine concentrations:
Inclusion Criteria: COHORT 2
Adequate renal function as defined by the following age-based serum creatinine concentrations:
Exclusion Criteria: COHORT 1 AND 2
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.
The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.
It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.
Biopsy and archival tissue
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Measurable disease
The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.
The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Life expectancy
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hemoglobin (Hb)
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Platelets
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Absolute neutrophil count (ANC)
The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.
It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ALT and AST (liver enzymes)
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ULN (upper limit of normal)
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Bilirubin
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ECG (electrocardiogram)
A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
QT and QTc
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
LVEF (left ventricular ejection fraction)
The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hypersensitivity
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Excipients
The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Cohort 1: Patients who are younger than 3 years of age diagnosed with NTRK1/2/3- or ROS1-fused high-grade glioma (HGG) will receive therapy as outline in Detailed Description. Cohort 2: Patients who are younger than 3 years of age diagnosed with NTRK1/2/3- or ROS1-fused CNS tumors other than HGG will receive therapy as outline in Detailed Description.
Drug: Entrectinib · Drug: Cyclophosphamide · Drug: Etoposide · Drug: Carboplatin · Biological: G-CSF · Biological: Pegfilgrastim · Procedure: Surgery
Given orally (PO) or enterally
Also known as: Rozlytrek
Given intravenous (IV)
Also known as: Cytoxan®
Given IV
Also known as: VP-16
Given IV
Also known as: Paraplatin®
Given subcutaneous (SQ) or IV
Also known as: Filgrastim
Given SQ as part of recommended Bridging Therapy instead of G-CSF.
Also known as: Neulasta
A gross total resection or significant debulking may become possible if a response to entrectinib is seen.
Also known as: Surgical resection
Overall response rate (ORR) (Cohort 1)
ORR is defined as the percentage of patients with either partial or complete response assessed at the protocol-defined evaluation timepoint. Overall response will be determined by the central imaging review based on the scheduled evaluations.
Time frame: After cycle 4 (each cycle is 28 days).
Progression free survival (PFS) (Cohort 1)
PFS is defined as the time from initiation of protocol treatment to first event (progressive disease, death due to any cause), or date last follow-up among those who have not had an event. Described using Kaplan Meier method.
Time frame: At 2 and 5 years
Overall survival (OS) (Cohort 1)
OS is defined as the time from date of diagnosis to date of death due to any cause or date last follow-up. Described using Kaplan Meier method.
Time frame: At 2 and 5 years
Duration of response (DOR) (Cohort 1)
DOR is defined as time from date of first response (partial or complete) until the date of progression or last follow-up. Described as median time.
Time frame: Up to 5 years
Patients who have second surgeries (Cohort 1)
Percentage of patients who had second surgeries.
Time frame: Up to 5 years
Patients who undergo gross-total resection after treatment (Cohort 1)
Percentage of patients who underwent a gross-total resection.
Time frame: Up to 5 years
ORR (Cohort 2)
ORR is defined as the percentage of patients with either partial or complete response assessed at the protocol-defined evaluation timepoint. Overall response will be determined by the central imaging review based on the scheduled evaluations.
Time frame: After cycle 4 (each cycle is 28 days).
PFS (Cohort 2)
PFS is defined as the time from initiation of protocol treatment to first event (progressive disease, death due to any cause), or date last follow-up among those who have not had an event. Described using Kaplan Meier method.
Time frame: At 2 and 5 years
OS (Cohort 2)
OS is defined as the time from date of diagnosis to date of death due to any cause or date last follow-up. Described using Kaplan Meier method.
Time frame: At 2 and 5 years
DOR (Cohort 2)
DOR is defined as time from date of first response (partial or complete) until the date of progression or last follow-up. Described as median time.
Time frame: Up to 5 years
Patients who have second surgeries (Cohort 2)
Percentage of patients who had second surgeries. \[Time Frame: Up to 5 years\]
Time frame: Up to 5 years
Patients who undergo gross-total resection after treatment (Cohort 2)
Percentage of patients who underwent a gross-total resection.
Time frame: Up to 5 years
Incidence of adverse events (Cohort 1 and 2)
Percentage of adverse events on therapy including Entrectinib, captured using National Cancer Institute Common Terminology Criteria for Adverse Events 5.0.
Time frame: Up to 5 years
Number of patients screened versus enrolled and treated (Cohort 1 and 2)
Number of enrolled and treated patients as a percentage of number of patients screened and eligible for study.
Time frame: Up to 5 years
Time from initial diagnostic surgery to screening and enrollment (Cohort 1 and 2)
Median time in days from initial surgery to screening and enrollment on study.
Time frame: Up to 5 years
Plan to share: Yes — Individual participant de-identified datasets containing the variables analyzed in the published article will be made available (related to the study primary or secondary objectives contained in the publication). Supporting documents such as the protocol, statistical analyses plan, and informed consent are available through the CTG website for the specific study. Data used to generate the published article will be made available at the time of article publication. Investigators who seek access to individual level de-identified data will contact the computing team in the Department of Biostatistics (ClinTrialDataRequest@stjude.org) who will respond to the data request.
Supporting information: Study protocol, Statistical analysis plan, Informed consent form
Time frame: Data will be made available at the time of article publication.
Access criteria: Data will be provided to researchers following a formal request with the following information: full name of requestor, affiliation, data set requested, and timing of when data is needed. As an informational point, the lead statistician and study principal investigator will be informed that primary results datasets have been requested.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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Contact study teamGet an email when the registry record changes — status, dates, results — or when someone posts here.
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Studies of the drug tested here: Entrectinib
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