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Not yet recruitingNCT06047535Updated Sep 21, 2023

Naxitamab and Granulocyte-Macrophage Colony Stimulating Factor (GM-CSF) Combined With Isotretinoin for Maintenance Treatment of Patients With High-Risk Neuroblastoma in First Complete Response.

A Phase 4 interventional study of Naxitamab in Neuroblastoma, sponsored by SciClone Pharmaceuticals. Not yet recruiting. Open to participants aged 12 Months and older. Per ClinicalTrials.gov, last updated 2023-09-21.

Sponsored by SciClone Pharmaceuticals · Phase 4, Interventional, and Prevention

Phase
Phase 4
Study type
Interventional
Enrollment
62
Allocation
Not applicable
Ages
12 Months and older
Sex
All
01

Study summary

This is a single-arm, multicenter clinical trial conducted in patients ≥ 12 months of age with high-risk neuroblastoma in first complete response. 62 patients will be enrolled to receive naxitamab + GM-CSF in combination with isotretinoin.

In line with post-consolidation maintenance treatment of high-risk neuroblastoma, this trial will include patients with high-risk neuroblastoma in first complete response. Patients must have completed a multimodal frontline regimen (induction and consolidation) and have achieved complete response (positive bone marrow minimal residual disease as assessed by RTqPCR is allowed) following the multi agent induction and consolidation therapy.

02

Conditions studied

  • Neuroblastoma

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Keywords

  • high-risk neuroblastoma with first complete response
03

In context

Neuroblastoma

675 studies on the registry are indexed under Neuroblastoma; 127 are open to participants now.

This study's planned enrollment of 62 is above the median of 32 across 507 interventional studies indexed under Neuroblastoma.

Browse Neuroblastoma studies →

Lead sponsor

SciClone Pharmaceuticals is the lead sponsor of 16 studies on the registry; 3 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
12 Months and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Documented NB at time of diagnosis defined as26:

    1. histopathology of solid tumor , or
    2. BM aspirate or biopsy indicative of NB plus high blood or urine catecholamine metabolite levels
  2. Documented high-risk disease at time of initial diagnosis defined as24, 26:

    1. MYCN-amplified at stage L2, M or MS (according to International Neuroblastoma Risk Group (INRG)) of any age or
    2. MYCN-nonamplified with stage M (according to INRG) and diagnosed at ≥ 18 months of age or
  3. Subjects must have completed frontline therapy described in 6.3.2 and have verified complete response according to INRC25 (BM MRD is allowed as assessed by RTqPCR at site28) after completion of induction and consolidation with or without
  4. Age ≥ 12 months at trial enrollment
  5. of greater than 6 months, as judged by the Investigator
  6. Written from legal guardian(s) and/or patient in accordance with local regulations. Children must provide assent as required by local regulations

Exclusion criteria

Exclusion Criteria:

  1. Verified PD during induction or consolidation therapy
  2. Any systemic anti-cancer therapy, including chemotherapy, within 3 weeks prior to enrollment
  3. within 6 weeks prior to enrollment or ongoing toxicity caused by the ASCT at the discretion of the Investigator
  4. Therapeutic 131I-MIBG within 6 weeks prior to enrollment
  5. Prior anti-GD2 therapy
  6. Performance status of \< 50% as per the Lansky scale (patients less than 16 years of age) or scale (patients aged 16 years or older)
  7. \< 50% by echocardiography
  8. Inadequate pulmonary function defined as evidence of dyspnea at rest, exercise intolerance, and/or chronic oxygen requirement. In addition, room air pulse oximetry \< 94% and/or abnormal pulmonary function tests if these assessments are necessary at the discretion of the Investigator
  9. Life threatening infection(s)
  10. Treatment with long-acting myeloid growth factor within 14 days or short-acting myeloid growth factor within 7 days prior to first dose of GM-CSF
  11. Treatment with agents (local excluded) within 4 weeks prior to enrollment
  12. History of allergy or known to GM-CSF, E. coli-derived products, or any component of GM-CSF, naxitamab, isotretinoin or vitamin A.
  13. NB in the Central Nervous System (CNS) or within 6 months prior to enrollment
  14. Patients with uncontrolled seizure disorders despite anticonvulsant therapy (defined as a seizure event within 3 months prior to enrollment)
  15. Unacceptable hematological status prior to first dosing, defined as one of the following:

    1. \<5.0 mmol/L (\<8 g/dL)
    2. White blood cell (WBC) count \<1000/µL
    3. (ANC)\<750/µL
    4. count \<75,000/µL
  16. Unacceptable liver function prior to first dosing, defined as one of the following:

    1. (ALT) and aspartate aminotransferase (AST) >5 times upper normal limit (UNL)
    2. >1.5 x UNL
  17. Unacceptable kidney function prior to first dosing, defined as:

    a. Estimated (eGFR) \< 60 mL/min/1.73 m2 calculated by the 2009 revised Bedside Schwartz Equation27 (Please refer to Appendix 1)

  18. Inability to comply with protocol, as judged by the Investigator
  19. Patients with a significant intercurrent illness (any ongoing serious medical problem unrelated to cancer or its treatment) that is not covered by the detailed exclusion criteria and that is expected to interfere with the action of trial agents or to significantly increase the severity of the toxicities experienced from trial treatment
  20. Females of who are pregnant, breast feeding, intend to become pregnant, or are not using adequate methods or males who are not using adequate contraceptive methods. Contraception must be used for 1 month after last isotretinoin treatment and 42 days after last naxitamab treatment whichever comes last for both genders
Terms in these criteria, in plain language(18)

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.

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.

Allogeneic and autologous transplant

Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.

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.

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.

Karnofsky performance status (KPS)

A 0–100 scale of how well someone can carry out everyday activities. 100 is no complaints and no signs of illness; 70 is able to look after yourself but not to work or keep up normal activity; 50 is needing considerable help and frequent medical care.

Studies often ask for 60 or 70 and above. Your doctor gives the score.

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.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

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.

Leptomeningeal disease

Cancer that has spread to the leptomeninges, the thin layers covering the brain and spinal cord, and the fluid between them. It is not the same as brain metastases.

Criteria often treat it separately, and many studies leave it out even where treated brain metastases are allowed.

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).

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.

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.

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.

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.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

05

Study design

Phase
Phase 4
Primary purpose
Prevention
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
62 participants (estimated)

Interventions

  • Naxitamab + GM-CSF: Cycles 1-5: Patients will receive naxitamab IV at 3 mg/kg/infusion on Day 1, 3 and 5 and GM-CSF sc at 5 µg/kg/day on Days -4 to 0 and at 10 µg/kg/day on Days 1-5 for 5 cycles. Isotretinoin: Cycles 3-8: Patients will receive isotretinoin PO at 160 mg/m2/day divided into two daily doses on Days 15-28 for 6 cycles.

    Also known as: GM-CSF, isotretinoin

06

What researchers measure

Primary outcomes

  1. 2-year progression free survival

    2-year progression free survival defined as the proportion of patients alive and without progressive disease or relapse 2 years after enrollment

    Time frame: 2 years

07

Study locations

No study locations are listed for this record.

08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Start is estimated for Oct 2023; primary completion for Jun 2027, 43 months later.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 12, 2023
First posted
Sep 21, 2023
StartEst.
Oct 31, 2023
Primary completionEst.
Jun 15, 2027
CompletionEst.
Aug 15, 2027
Last update
Sep 21, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 21, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT06047535
Lead sponsor
SciClone Pharmaceuticals
Responsible party
Sponsor
First posted
Sep 21, 2023
Start date
Oct 31, 2023 (estimated)
Primary completion
Jun 15, 2027 (estimated)
Completion
Aug 15, 2027 (estimated)
Last update
Sep 21, 2023

Oversight

FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Sep 2023. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Naxitamab

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