Study of 211At-MABG for Advanced Neuroendocrine Cancers

This study is testing a treatment called 211At-MABG for adults with advanced neuroendocrine cancers, including pheochromocytoma, paraganglioma, neuroendocrine tumors, medullary thyroid cancer, and bronchial carcinoid. This treatment uses a radioactive substance (Astatine-211) attached to a special molecule (meta-astatobenzylguanidine) to target cancer cells. You might be able to join if your cancer is advanced and hasn't responded to, or you can't receive, standard treatments. You also need to have MIBG-avid disease, meaning your tumors show up on a special imaging scan (MIBG imaging). The main goal of this study is to see if the treatment is safe and practical to give, which will be evaluated over 4 weeks. The study is currently unclear on its recruitment status and plans to enroll 16 participants.

Study design
This is a Phase 1 dose-escalation study, meaning different doses of 211At-MABG will be tested to find the safest and most effective amount. It will follow a standard 3+3 design with an expansion cohort.
What's involved
Not specified in the trial record.
Compensation
Not stated in the trial record.
Follow-up
The primary endpoints for evaluating feasibility are measured at 4 weeks after treatment.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT07661420

211At-MABG in Adults With Advanced Neuroendocrine Cancers

Not Yet Recruiting
PHASE1Ages 18+InterventionalTreatment
University of Pennsylvania
~16 participants
Updated 2026-06-22 on ClinicalTrials.gov
What's tested:1 MBq/k of 211At-MABG Fractionated2 MBq/k1 of 211At-MABG Fractionated4 MBq/k of 211At-MABG Fractionated

At a glance

Recruiting sites
0 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Evaluate overall study feasibility
Measured over 4 weeks
+1 more outcome measured
Pheochromocytoma
Paraganglioma
Neuroendocrine Tumors
Medullary Thyroid Cancer
Bronchial Carcinoid
Gastroenteropancreatic Neuroendocrine Neoplasm
1 sites across 1 states
Pennsylvania1
  • Vivek Narayan, MD, MS · PRINCIPAL_INVESTIGATOR · University of Pennsylvania

This trial hasn't published a contact. View it on ClinicalTrials.gov

  • Evaluate overall study feasibility4 weeks

    Proportion of intended 211At-MABG fractionated doses that are successfully administered within the protocol-defined window (at the overall study level).

  • Evaluate study feasibility overall study feasibility assessed for operational issues versus treatment-related adverse events.4 weeks

    Proportion of fractionated dose administrations either delayed and/or omitted due to operational issues (i.e. insufficient/delayed synthesis) versus treatment-related adverse events (at the overall study level).