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Clinical Trial Summary

Increased fibroblast activation protein expression is positively correlated with the dedifferentiation and aggressiveness of thyroid cancer. Radiolabeled fibroblast activation protein inhibitor therapy, also known as radioligand therapy has become a novel treatment for patients with radioactive iodine refractory thyroid cancer and disease progression after first-line treatment. However, a major problem in the therapeutic use of 177Lu-DOTA-FAPI has been its short half-life and fast rate of clearance. This study was designed to evaluate the safety, tolerability, and maximum tolerated dose of a long-lasting radiolabeled fibroblast activation protein inhibitor 177Lu-DOTA-EB-FAPI in mRAIR-TC patients with PD after TKIs treatment.


Clinical Trial Description

This dose-escalation study will include a maximum of 20 mRAIR-TC subjects with progressive disease after tyrosine kinases inhibitors (TKIs) treatment, with an increased radiotracer uptake in tumors on 68Ga-FAPI-46 PET/CT. The initial dose of 177Lu-DOTA-EB-FAPI is 2.22GBq (60 mCi), and subsequent cohorts receive an incremental 50% dose increase until dose-limiting toxicity (DLT) was observed. Treatment is planned for up to 2 cycles, and the time interval between cycles is 6 weeks. The primary endpoint assessed the safety and maximum tolerated dose of 177Lu-DOTA-EB-FAPI used for radioligand therapy in patients with advanced mRAIR-TC. Secondary endpoints included dosimetry and determination of the preliminary treatment efficacy of 177Lu-DOTA-EB-FAPI. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05410821
Study type Interventional
Source The First Affiliated Hospital of Xiamen University
Contact Haojun Chen, MD, PhD
Phone +8618659285282
Email leochen0821@foxmail.com
Status Recruiting
Phase Phase 1
Start date June 15, 2022
Completion date June 15, 2025

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