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Safety, Tolerability, and Preliminary Efficacy of [211At]MABG in Patients With Relapsed or Refractory Neuroblastoma

An Exploratory Proof-of-Concept (POC) Study Evaluating the Safety, Tolerability, and Preliminary Efficacy of Fractionated Dosing of [211At]MABG in Patients With Relapsed or Refractory Neuroblastoma (Including a Run-in Phase)

Status
Recruiting
Phases
Early Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07767630
Enrollment
10
Registered
2026-08-17
Start date
2026-07-21
Completion date
2027-06-30
Last updated
2026-08-21

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

Conditions

Neuroblastoma (NB)

Keywords

Radiopharmaceutical

Brief summary

Fractionated dosing of \[211At\]MABG Radiotherapy in Relapsed/Refractory Neuroblastoma

Detailed description

Fractionated dosing of \[211At\]MABG Radiotherapy in Relapsed/Refractory Neuroblastoma

Interventions

DRUG[211At]MABG

Fractionated Dose

Sponsors

Sichuan University
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
1 Years to 100 Years
Healthy volunteers
No

Inclusion criteria

1. Patients diagnosed with MIBG avid lesions, high-risk neuroblastoma per the Revised International Neuroblastoma Response Criteria (Revised INRC), with refractory, relapsed, or progressive disease. 2. All measurable soft tissue lesions must be MIBG-avid. 3. Age ≥ 1 year at enrollment. 4. Lansky performance status ≥ 50%. 5. Adequate organ function and hematologic parameters.

Exclusion criteria

1. Antibody-based immunotherapy within fewer than 5 half-lives or 30 days (whichever is shorter), or who have not yet recovered from adverse effects of any biologic therapy. 2. Treatment with \[¹³¹I\]MIBG or Lu177 targeted radionuclide therapy less than 3 months of last administration. 3. Autologous stem cell transplant \<12 weeks, or Allogeneic stem cell transplant \<4 months (patients \>4 months post-transplant must be free of active GVHD). 4. Radiotherapy within 2 weeks prior to the first study dose (However, patients with a single-site irradiation that remains MIBG avid may be enrolled.) or extensive-field radiotherapy (e.g., craniospinal, whole abdomen, whole lung, or \>50% of bone marrow area) within 12 weeks prior to the first study dose. 5. Renal Insufficiency. 6. Active Infections.

Design outcomes

Primary

MeasureTime frameDescription
Incidence and severity of dose-limiting toxicities (DLTs)From administration of [211At]MABG until 4 weeks after injectionIncidence and severity of dose-limiting toxicities (DLTs)
Incidence and severity of adverse events (AEs) as assessed by CTCAE v5.0From administration of [211At]MABG until 4 weeks after last dose of injectionIncidence and severity of adverse events (AEs) as assessed by CTCAE v5.0

Secondary

MeasureTime frameDescription
Response assessed in accordance with the Revised International Neuroblastoma Response Criteria (INRC)8 weeks after [211At]MABG administration, Participants without disease progression (PD) will be evaluated every 8 weeks for the first 24 weeks, then every 12 weeks until PD, new cancer therapy, death, or study terminationResponse assessed in accordance with the Revised International Neuroblastoma Response Criteria (INRC)
Absorbed radiation dose (Gy) distribution in normal organs and tumors by quantitative SPECT/CT dosimetryAbout 21hours from time of [211At]MABG administration]Absorbed radiation dose (Gy) distribution in normal organs and tumors by quantitative SPECT/CT dosimetry

Countries

China

Contacts

CONTACTRong TIAN, MD
rongtiannuclear@126.com+86 189 8060 1586
CONTACTXiaoao WU, PHD
allenfire511@163.com+86 189 8060 2715
PRINCIPAL_INVESTIGATORRong TIAN, MD

West China Hospital

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 22, 2026