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MIBG With Dinutuximab +/- Vorinostat

A Phase I Study of 131I-MIBG With Dinutuximab +/- Vorinostat for Relapsed/Refractory Neuroblastoma

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03332667
Enrollment
45
Registered
2017-11-06
Start date
2018-09-12
Completion date
2024-02-23
Last updated
2025-04-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Neuroblastoma

Brief summary

131I-Metaiodobenzylguanidine (131I-MIBG) is one of the most effective therapies utilized for neuroblastoma patients with refractory or relapsed disease. In this pediatric phase 1 trial, 131I-MIBG will be given in combination with dinutuximab, a chimeric 14.18 monoclonal antibody. This study will utilize a traditional Phase I rolling 6 dose escalation design to determine a recommended phase 2 pediatric dose. An expansion cohort of an additional 6 patients will then be enrolled. If tolerable, vorinostat will then be added to the third dose level. A 6 patient expansion cohort may then be enrolled.

Detailed description

131I-Metaiodobenzylguanidine (131I-MIBG) is one of the most effective therapies utilized for neuroblastoma patients with refractory or relapsed disease. Data from pre-clinical and adult studies suggest that radiation can enhance the efficacy of immunotherapy and targeted therapies such as dinutuximab. This first pediatric phase 1 trial of 131I-MIBG in combination with dinutuximab and vorinostat aims to determine the recommended phase 2 pediatric dose of these three therapies in combination.

Interventions

RADIATION131I-MIBG

Patients will receive 131I-MIBG on day 1. 131I-MIBG dose will be based on the dose level assigned at the time of patient registration

Dinutuximab is given intravenously on days 8-11 and 29-32 of therapy. Dinutuximab dose will be based on the dose level assigned at the time of patient registration.

DRUGVorinostat

Vorinostat will be given on day 0-13. Vorinostat dose will be based on the dose level assigned at the time of patient registration.

DRUGSargramostim

Sargramostim (GM-CSF) will be given on day 8-17 at 250 mcg/m\^2

Potassium 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

Sponsors

United Therapeutics
CollaboratorINDUSTRY
National Cancer Institute (NCI)
CollaboratorNIH
New Approaches to Neuroblastoma Therapy Consortium
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
1 Years to 30 Years
Healthy volunteers
No

Inclusion criteria

1. Patients must have evidence of MIBG uptake into tumor at ≥ 1 site (bone or soft tissue) within 28 days prior to study entry and subsequent to any intervening therapy. 2. Patients must have a diagnosis of neuroblastoma either by histologic verification of neuroblastoma and/or demonstration of tumor cells in the bone marrow with increased urinary catecholamines. 3. Patients must have a history of high-risk neuroblastoma according to COG risk classification at the time of study registration. Patients who were initially considered low or intermediate-risk, but then reclassified as high-risk are also eligible. 4. All patients must have at least one of the following 1. Recurrent/progressive disease: after the diagnosis of high risk neuroblastoma at any time prior to enrollment regardless of response to frontline therapy 2. No prior history of recurrent/progressive disease since the diagnosis of high risk neuroblastoma b1) Refractory disease- a best overall response of no response/stable disease since diagnosis of high risk neuroblastoma and at least 4 cycles of induction therapy. No prior history of recurrent/progressive disease since the diagnosis of high risk neuroblastoma. b2) Persistent disease- a best overall response of no partial response since diagnosis of high risk neuroblastoma and at least 4 cycles of induction therapy. No prior history of recurrent/progressive disease since the diagnosis of high risk neuroblastoma. 5. Patients must have at least ONE of the following (lesions may have received prior radiation therapy as long as they meet the other criteria listed below): a) For recurrent/progressive or refractory disease, at least one MIBG avid bone site. b) For persistent disease, if a patient has 3 or more MIBG avid lesions, then no biopsy is required. If a patients has only 1 or 2 MIBG avid bone lesion sites then biopsy confirmation of neuroblastoma or ganglioneuroblastoma in at least one MIBG avid site present at the time of enrollment is required to be obtained at any time point prior to enrollment. c) For MIBG non-avid tumors, patients must have at least one FDG avid site and a biopsy confirmation of neuroblastoma and/or ganglioneuroblastoma at any time prior to enrollment from at least one FDG-avid site. 6. Any amount of neuroblastoma tumor cells in the bone marrow done at the time of study enrollment based on routine morphology with or without immunocytochemistry in at least one sample from bilateral aspirates and biopsies. 7. At least one soft tissue lesion that meets criteria for a TARGET lesion as defined by: a) SIZE: Lesion can be accurately measured in at least one dimension with a longest diameter ≥ 10 mm, or for lymph nodes ≥ 15 mm on short axis. Lesions meeting size criteria will be considered measurable. b) In addition to size, a lesion needs to meet one of the following criteria except for patients with parenchymal CNS lesions which only need to meet size criteria: b1) MIBG avid. For patients with recurrent/progressive or refractory disease, no biopsy is required. For patients with persistent disease only: If a patient has only 1 or 2 MIBG avid lesions sites, then biopsy confirmation of neuroblastoma and/or ganglioneuroblastoma in at least one MIBG avid site present at time of enrollment is required to be obtained. If a patient has 3 or more MIBG avid lesions, then no biopsy is required. b2) MIBG non avid tumors: Patients must have at least one FDG avid site and biopsy confirmation of neuroblastoma and/or ganglioneuroblastoma in at least one FDG-PET avid site present at the time of enrollment. 8. At least one non-target soft tissue lesion that is not measurable, but had a biopsy positive for neuroblastoma and/or ganglioneuroblastoma or is MIBG avid at any time prior to enrollment. 9. Patients must have a life expectancy of at least 12 weeks and a Lansky (≤16 years) or Karnofsky (\>16 years) score of at least 50. 10. Prior Therapy 1. Patients must have fully recovered from the acute toxic effects of all prior chemotherapy, immunotherapy, or radiotherapy prior to study registration. 2\. Patients must not have received the therapies indicated below after disease evaluation or within the specified time period prior to registration on this study as follows: 1\. Myelosuppressive chemotherapy: must not have received within 2 weeks prior to registration. 2\. Biologic anti-neoplastics- agents not known to be associated with reduced platelet or ANC counts (including retinoids): must not have received within 7 days prior to registration. 3\. Monoclonal antibodies: must have received last dose at least 7 days or 3 half-lives whichever is longer, but no longer than 30 days (with recovery of any associated toxicities), prior to protocol therapy. 4\. Cellular Therapy (e.g. modified T cells, NK cells, dentritic cells etc.): must not have received within 3 weeks and resolution of all toxicities. 5\. Radiation: must not have received small port radiation within 7 days prior to registration. 6\. Hematopoietic Stem Cell Transplant: 7. IVIG 8. Therapeutic MIBG 9. Investigational medicines covered under another IND 10. Medications interfering with MIBG uptake 11. Medications that prolong QTc (Part B only) 12. Valproic acid (Part B only) 11) All patients must have adequate organ function defined as: \- Hematological Function: 1. Absolute Phagocyte count (APC= neutrophils and monocytes): ≥ 1000/µL 2. Absolute Neutrophil count: ≥750/µL 3. Absolute Lymphocyte count ≥ 500/µL 4. Platelet count: ≥ 50,000/µL, transfusion independent (no platelet transfusions within 1 week) 5. Hemoglobin ≥ 10 g/dL (may transfuse) 6. Patients with known bone marrow metastatic disease will be eligible for study as long as they meet hematologic function criteria above. * Renal Function: Age-adjusted serum creatinine ≤ to 1.5 x normal for age/gender OR creatinine clearance or GFR greater than or equal to 60 cc/min/1.73m2 * Liver Function: Total bilirubin ≤ 1.5 x normal for age, AND SGPT (ALT) 135 and SGOT (AST) ≤ 3 x upper limit of normal. Sinusoidal obstruction syndrome (SOS) if present, must be stable or improving clinically * Cardiac Function: Normal ejection fraction documented by either echocardiogram or radionuclide MUGA evaluation OR Normal fractional shortening documented by echocardiogram * Pulmonary Function: No dyspnea at rest, no oxygen requirement. 12\) Reproductive Status: All post-menarchal females must have a negative beta-HCG. Males and females of reproductive age and childbearing potential must use effective contraception for the duration of their participation. 13\) Patients with other ongoing serious medical issues must be approved by the study chair prior to registration. 14\) Autologous peripheral blood stem cells (PBSC)•The minimum dose for peripheral blood stem cells is 2.0 x 106viable CD34+ cells/kg. Patients who do not meet this minimum requirement for available PBSCs are not eligible. •Only un-purged stem cells are allowed unless a center has separate FDA approval for infusion of purged stem cells. •For patients whose body weight exceeds ideal body weight (IBW) by more than 20%, adjusted body weight may be used for the calculation of PBSC dose 15) Physician deems that there is reasonable ability to obtain vorinostat via commercial supply (Part B Only)

Exclusion criteria

* Pregnancy, breast feeding, or unwillingness to use effective contraception during the study. * Patients who, in the opinion of the investigator, may not be able to comply with the safety monitoring requirements of the study. * Patients with disease of any major organ system that would compromise their ability to withstand therapy. * Patients who have received prior allogeneic stem cell transplant * Patients who have received prior solid organ transplantation * Patients must not have received prior total body irradiation * Prior HDAC inhibitor given in combination with therapeutic 131I-MIBG(Part B only) * The maximum total allowable dose of 131I-MIBG that can be given per institutional guidelines must be at least 90% of the calculated 131I-MIBG dose or the patient is not eligible. * Patients who are on hemodialysis. * Patients with an active or uncontrolled infection. * Known history of human immunodeficiency virus (HIV) infection, hepatitis B, or hepatitis C. * Patient declines participation in NANT 2004-05, the NANT Biology Study * Patients and/or families who are physically and psychologically unable to cooperate with the radiation safety isolation. * Patients with a history of having to discontinue anti-GD2 antibody therapy due to toxicity are not eligible. * Prior anti-GD2 therapy is not otherwise an exclusionary criteria unless it was given in combination with therapeutic 131I-MIBG.

Design outcomes

Primary

MeasureTime frameDescription
MTD/RP2D Determination Cohort AAll toxicities from enrollment until completion of course 1 (Day 56)Proportion of patients with Course 1 DLT in Cohort A
MTD/RP2D Determination Cohort BAll 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 AAll toxicities from enrollment through 30 days following end of protocol therapy, up to 5 monthsProportion of patients with any grade 3 or greater non-hematological toxicities in Cohort A
Describe Non Hematological Toxicities Cohort BAll toxicities from enrollment through 30 days following end of protocol therapy, up to 5 monthsProportion of patients with any grade 3 or greater non-hematological toxicities in Cohort B

Secondary

MeasureTime frameDescription
Overall Response Cohort AFrom Day 1 of protocol therapy through 30 days following end of protocol therapy, up to 5 monthsProportion of patients evaluable for response with a best overall response of CR/CR-MD/PR for patients in Cohort A
Overall Response Cohort BFrom Day 1 of protocol therapy through 30 days following end of protocol therapy, up to 5 monthsProportion of patients evaluable for response with a best overall response of CR/CR-MD/PR for patients in Cohort B

Countries

United States

Participant flow

Participants by arm

ArmCount
Cohort A DL1
Patients will receive 131I-MIBG on day 1 at 12mCI/kg/dose. Dinutuximab is given intravenously on days 8-11 and 29-32 of therapy at 17mg/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.
6
Cohort A DL2
Patients will receive 131I-MIBG on day 1 at 15mCI/kg/dose. Dinutuximab is given intravenously on days 8-11 and 29-32 of therapy at 17mg/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.
5
Cohort A DL3
Patients will receive 131I-MIBG on day 1 at 18mCI/kg/dose. Dinutuximab is given intravenously on days 8-11 and 29-32 of therapy at 17mg/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.
20
Cohort B DL4
Vorinostat will be given on days 0-13 at 180mg/m2/dose. Patients will receive 131I-MIBG on day 1 at 18mCI/kg/dose. Dinutuximab is given intravenously on days 8-11 and 29-32 of therapy at 17mg/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.
14
Total45

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Overall StudyAdverse Event0021
Overall StudyDisease Progression or Relapse2130
Overall StudyInitiation onto Another Anti-Cancer Therapy1131
Overall StudyNo Treatment Received0010
Overall StudyWithdrawal by Subject2151

Baseline characteristics

CharacteristicCohort A DL1Cohort A DL2Cohort A DL3Cohort B DL4Total
Age, Categorical
<=18 years
5 Participants5 Participants19 Participants11 Participants40 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
1 Participants0 Participants1 Participants3 Participants5 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants3 Participants3 Participants1 Participants8 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
4 Participants2 Participants14 Participants13 Participants33 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
1 Participants0 Participants3 Participants0 Participants4 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants1 Participants1 Participants2 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants1 Participants1 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants3 Participants2 Participants5 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants1 Participants1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants2 Participants4 Participants0 Participants7 Participants
Race (NIH/OMB)
White
5 Participants3 Participants12 Participants9 Participants29 Participants
Sex: Female, Male
Female
2 Participants2 Participants7 Participants7 Participants18 Participants
Sex: Female, Male
Male
4 Participants3 Participants13 Participants7 Participants27 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
4 / 61 / 512 / 205 / 14
other
Total, other adverse events
6 / 65 / 519 / 2014 / 14
serious
Total, serious adverse events
3 / 62 / 56 / 208 / 14

Outcome results

Primary

Describe Non-Hematological Toxicities Cohort A

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

Time frame: All toxicities from enrollment through 30 days following end of protocol therapy, up to 5 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Cohort A DL1Describe Non-Hematological Toxicities Cohort A5 Participants
Cohort A DL2Describe Non-Hematological Toxicities Cohort A3 Participants
Cohort A DL3Describe Non-Hematological Toxicities Cohort A10 Participants
Primary

Describe Non Hematological Toxicities Cohort B

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

Time frame: All toxicities from enrollment through 30 days following end of protocol therapy, up to 5 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Cohort A DL1Describe Non Hematological Toxicities Cohort B12 Participants
Primary

MTD/RP2D Determination Cohort A

Proportion of patients with Course 1 DLT in Cohort A

Time frame: All toxicities from enrollment until completion of course 1 (Day 56)

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Cohort A DL1MTD/RP2D Determination Cohort A0 Participants
Cohort A DL2MTD/RP2D Determination Cohort A0 Participants
Cohort A DL3MTD/RP2D Determination Cohort A0 Participants
Primary

MTD/RP2D Determination Cohort B

Proportion of patients with Course 1 DLT in Cohort B

Time frame: All toxicities from enrollment until completion of course 1 (Day 56)

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Cohort A DL1MTD/RP2D Determination Cohort B1 Participants
Secondary

Overall Response Cohort A

Proportion of patients evaluable for response with a best overall response of CR/CR-MD/PR for patients in Cohort A

Time frame: From Day 1 of protocol therapy through 30 days following end of protocol therapy, up to 5 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Cohort A DL1Overall Response Cohort A2 Participants
Cohort A DL2Overall Response Cohort A4 Participants
Cohort A DL3Overall Response Cohort A5 Participants
Secondary

Overall Response Cohort B

Proportion of patients evaluable for response with a best overall response of CR/CR-MD/PR for patients in Cohort B

Time frame: From Day 1 of protocol therapy through 30 days following end of protocol therapy, up to 5 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Cohort A DL1Overall Response Cohort B5 Participants

Source: ClinicalTrials.gov · Data processed: Feb 12, 2026