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Dinutuximab with Chemotherapy

Phase 2

Neuroblastoma | Small molecule | Oncology |United Therapeutics Corporation|Last Updated: Mar 23, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedCONTROLLEDDMCBiomarker
Total Trials4
Total Enrollment187
FDA Designations
No designations recorded
Clinical Trials (4)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07261241NANT 2021-02: Randomized MIBG With Vorinostat/Dinutuximab/Vorinostat + DinutuximabPHASE2 NOT YET_RECRUITING 118Jul 31, 2026Jul 31, 2031Dec 3, 202513 United States
NCT05421897Rapid Administration Pilot for Infusing DinutuximabPHASE1 ACTIVE NOT_RECRUITING 11Nov 29, 2022Jan 1, 2026Jan 29, 20261 United States
NCT02573896Immunotherapy of Relapsed Refractory Neuroblastoma With Expanded NK CellsPHASE1 ACTIVE NOT_RECRUITING 13Jan 14, 2019Dec 1, 2026Mar 23, 202611 United States
NCT03332667MIBG With Dinutuximab +/- VorinostatPHASE1 COMPLETED 45Sep 12, 2018Feb 23, 2024Apr 16, 202512 United States
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Study Endpoints
Primary Endpoints
Objective Tumor Response After One Course of Therapy
43-50 days from study day 1

To identify the MIBG treatment regimen associated with the highest overall response rate after one course of treatment on the three arms. The response evaluation was based on central review (intent to treat analysis). Responders defined as meeting CR/MRD/PR criteria. Response was based on NANT response criteria v1.2 (https://doi.org/10.1002/pbc.26940). RECST 1.1 criteria was used for measurable tumors with PR criteria \> 30% decrease in target tumor size. Curie score was used with PR criteria \> 50% decrease in Curie score. Complete Response- disappearance of all target lesions, Curie score of 0 and no detectable bone marrow disease. Overall Response (OR)=CR+PR.

Determine feasibility of administering dinutuximab in Cycle 1
Day 1 of therapy until Day 21

The number of dinutuximab days tolerated in 4 hours or less in Cycle 1 will be measured

Determine average dinutuximab infusion time in Cycle 1
Day 1 of therapy until Day 21

The infusion time of dinutuximab days administered on Days 1-4 will be measured and the average infusion time will be calculated for each dinutuximab day during Cycle 1.

NK cell production feasibility (lowest dose level)
After cell expansion, day 4 of protocol therapy

Proportion of patients whose NK cell product is at least 80% of 10\^7 NK cells per kg (sufficient cells to give at least 1 dose at the lowest dose level).

NK cell production feasibility
After cell expansion, day 4 of protocol therapy

Proportion of patients whose NK cell product is at least 80% of the planned dose for one dose

MTD/RP2D determination
all toxicities from enrollment through 30 days following end of protocol therapy

Proportion of patients with any Grade 3 or greater non-hematological toxicities on any course

MTD/RP2D Determination Cohort A
All toxicities from enrollment until completion of course 1 (Day 56)

Proportion of patients with Course 1 DLT in Cohort A

MTD/RP2D Determination Cohort B
All toxicities from enrollment until completion of course 1 (Day 56)

Proportion of patients with Course 1 DLT in Cohort B

Describe Non-Hematological Toxicities Cohort A
All toxicities from enrollment through 30 days following end of protocol therapy, up to 5 months

Proportion of patients with any grade 3 or greater non-hematological toxicities in Cohort A

Describe Non Hematological Toxicities Cohort B
All toxicities from enrollment through 30 days following end of protocol therapy, up to 5 months

Proportion of patients with any grade 3 or greater non-hematological toxicities in Cohort B

Secondary Endpoints
Number of Participants With Grade 3 or Greater Non-hematologic Toxicities
All toxicities from enrollment through 30 days following end of protocol therapy, an average of 6 months
Objective Tumor Response After Two Courses of Therapy
43-50 days from study day 1
Objective Bone Marrow Tumor Response After One Course of Therapy
43-50 days from study day 1
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Arm A: 131I-MIBG + vorinostatEXPERIMENTALPatients assigned to Arm A will receive vorinostat orally once daily on Days 0 to 13 at a dose of 180 mg/m2/dose (maximum dose 400 mg). Patients will receive 131I-MIBG 18 mCi/kg (maximum dose 1200 mCi) on Day 1 and autologous stem cell infusion on Day 15 (plus 2 days or minus 1 day, hereafter abbreviated as +2/-1 days). There must be at least 24 hours between the last dose of vorinostat and stem cell infusion. Disease evaluation is to occur between days 50-60. The time interval between performing end of Course 1 disease evaluation and administration of Course 2 131I-MIBG is not to exceed 4 weeks.
Arm B: 131I-MIBG + dinutuximabEXPERIMENTALPatients assigned to Arm B will receive 18 mCi/kg (maximum dose 1200 mCi) 131I-MIBG on Day 1 and autologous stem cell infusion on Day 15 (+2/-1 days). Dinutuximab 17.5 mg/m2/day is given intravenously on Days 8-11 and 29-32 of therapy. Disease evaluation is to occur between Days 50-60. In case of treatment delays with dinutuximab during Course 1, the time interval between performing end of Course 1 disease evaluation and administration of Course 2 131I-MIBG is not to exceed 4 weeks.
Arm C: 131I-MIBG + vorinostat + dinutuximabEXPERIMENTALPatients assigned to Arm C will receive vorinostat 180 mg/m2/dose (maximum dose 400 mg) on Days 0 to 13, 131I-MIBG 18 mCi/kg (maximum dose 1200 mCi) on Day 1. Dinutuximab 17.5 mg/m2/day is given intravenously on Days 8-11 and 29-32 of therapy. Disease evaluation is to occur between Days 50-60. In case of treatment delays with dinutuximab during Course 1, the time interval between performing end of Course 1 disease evaluation and administration of Course 2 131I-MIBG is not to exceed 4 weeks.
Rapid infusion of dinutuximab with chemotherapyEXPERIMENTALPatients will receive chemotherapy and dinutuximab via rapid infusion
NK cells with Dinutuximab & LenalidomideEXPERIMENTALPatients in this arm will receive a designated dose of NK cells on Day 5 and 17.5 mg/m2/dose of dinutuximab on Day 1-4. Patients on Dose Level 4 will also receive 25mg/m2/dose of Lenalidomide during Day -6 through 14 of treatment.
Cohort A DL1EXPERIMENTALPatients will receive 131I-MIBG on day 1 at 12 mCi/kg/dose. Dinutuximab is given intravenously on days 8-11 and 29-32 of therapy at 17.5 mg/m2/dose. Patient will receive GM-CSF on days 8-17 and 29-38 at 250 mcg/m2. All patients will receive autologous hematopoietic stem cell infusion on day 15 (+/- 2) of therapy
Cohort A DL2EXPERIMENTALPatients will receive 131I-MIBG on day 1 at 15 mCi/kg/dose. Dinutuximab is given intravenously on days 8-11 and 29-32 of therapy at 17.5 mg/m2/dose. Patient will receive GM-CSF on days 8-17 and 29-38 at 250 mcg/m2. All patients will receive autologous hematopoietic stem cell infusion on day 15 (+/- 2) of therapy
Cohort A DL3EXPERIMENTALPatients will receive 131I-MIBG on day 1 at 18 mCi/kg/dose. Dinutuximab is given intravenously on days 8-11 and 29-32 of therapy at 17.5 mg/m2/dose. Patient will receive GM-CSF on days 8-17 and 29-38 at 250 mcg/m2. All patients will receive autologous hematopoietic stem cell infusion on day 15 (+/- 2) of therapy
Cohort B DL4EXPERIMENTALVorinostat will be given on days 0-13 at 180 mg/m2/dose. Patients will receive 131I-MIBG on day 1 at 18 mCi/kg/dose. Dinutuximab is given intravenously on days 8-11 and 29-32 of therapy at 17.5 mg/m2/dose. Patient will receive GM-CSF on days 8-17 and 29-38 at 250 mcg/m2. All patients will receive autologous hematopoietic stem cell infusion on day 15 (+/- 2) of therapy
Interventions
NameTypeDescription
Radiation: 131I-MIBGDRUGPatients will receive 131I-MIBG 18 mCi/kg (maximum dose 1200 mCi) on Day 1
DinutuximabDRUGDinutuximab 17.5 mg/m2/day is given intravenously on Days 8-11 and 29-32 of therapy
VorinostatDRUGVorinostat will be given on days 0-13 at a dose of 180 mg/m2/dose (maximum dose 400 mg).
Dinutuximab with ChemotherapyDRUGRapid infusion of dinutuximab in 5 hours or less
NK CellsBIOLOGICALThe designated dose of NK Cells will be infused on Day 5 by IV drip using a Y infusion set with a filter-less chamber. Cells should not be delivered at a rate faster than 10 ml/kg/hr (as determined by drip rate or syringe push rate), and should not take longer than one hour for total infusion time if possible.
LenalidomideDRUG25 mg/m2/day of Lenalidomide will be given at Dose Level 4, once daily with or without food by mouth on days -6 through +14.
131I-MIBGRADIATIONPatients will receive 131I-MIBG on day 1. 131I-MIBG dose will be based on the dose level assigned at the time of patient registration
SargramostimDRUGSargramostim (GM-CSF) will be given on day 8-17 at 250 mcg/m\^2
Potassium IodideDRUGPotassium iodide will be given by mouth at a dose of 6mg/kg 8-12 hours prior to infusion of 131I-MIBG on Day 1 and then 1mg/kg/dose by mouth starting 4-6 hours after completion of MIBG infusion and continuing every 4 hours on protocol days 1-7 and then 1mg/kg/dose by mouth once daily on protocol days 8-45
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Eligibility Criteria
Age Range1 Year — 30 Years
SexALL
Healthy VolunteersNo
Study Sites13

Inclusion Criteria: Age Patients must be ≥ 1 year and \< 30 years of age at the time of study registration. Diagnosis Patients must have a diagnosis of neuroblastoma or ganglioneuroblastoma nodular subtype either by histologic verification of neuroblastoma and/or demonstration of tumor cells in th...

Countries:United States
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Recent Changes (Last 90 Days)
LOWMay 24, 2026NCT07261241studyFirstPostDate: changed
LOWMay 24, 2026NCT05421897studyFirstPostDate: changed
LOWMay 24, 2026NCT02573896studyFirstPostDate: changed