Medullary Thyroid Carcinoma

Neuroendocrine tumours (NETs) are generally slow growing, but some can be aggressive and resistant to treatment. Compared to healthy cells, the surface of these tumor cells has a greater number of molecules called somatostatin receptors (SSTR) which requires specific PET scan tracers to sufficiently capture on images. The current standard of care tracer at BC Cancer for SSTRs on NETs is 68Ga-DOTATATE. This project seeks to identify if 18F-AmBF3-TATE (a tracer that has established safety from phase 1 trial results), is comparable in disease detection, no. of lesions identified, image quality, safety and overall accuracy, to 68Ga-DOTATATE.

This is a prospective multicenter observational study on medullary thyroid cancer , aiming to investigate the correlation of stromal desmoplastic reaction with tumor aggressiveness.

The purpose of this study is to evaluate the safety, tolerability, dosimetry and preliminary efficacy of \[225Ac\]Ac-ETN029 and the safety and imaging properties of \[111In\]In-ETN029 in patients aged ≥ 18 years with locally advanced or metastatic DLL3 positive cancers.

THORS is a single-center ambidirectional observational cohort study conducted at Moscow Multidisciplinary Clinical Center "Kommunarka". The study combines retrospective analysis of routinely collected clinical data from patients who underwent thyroid surgery beginning in January 2023 with ongoing prospective accrual of new eligible patients and longitudinal updating of follow-up information. No diagnostic or therapeutic intervention is assigned by the research protocol; all treatment decisions are made as part of routine clinical care. The program evaluates the structure and outcomes of thyroid surgery, postoperative complications, histopathology, repeat and completion procedures, long-term oncologic and functional outcomes, health-care resource use, and the quality and reproducibility of real-world data. Applicable outcomes from the international Core Outcome Set for surgical treatment of differentiated thyroid carcinoma (COS-DTC) are incorporated where they can be reliably measured. The first frozen historical analytical baseline includes 968 unique patients and 1,017 thyroid operations performed from 06 January 2023 through 13 February 2026. The cohort remains open to ongoing enrollment and follow-up

This is a multicenter, randomized, open-label, non-inferiority Phase III clinical trial, aims to compare 68Ga-CTR-FAPI PET-CT-guided surgery to investigator-chosen surgical approaches to evaluate its efficacy in treating newly diagnosed medullary thyroid carcinoma. This study plans to enroll 150 newly diagnosed MTC patients, who will be randomly assigned in a 2:1 ratio to the experimental group (surgery based on 68Ga-CTR-FAPI PET-CT findings) and the control group (surgery based on the investigator's choice). The primary endpoint is the biochemical cure rate, with secondary endpoints including the biochemical cure rate in the R0 resection subgroup, the unnecessary dissection rate in the biochemical-cured subgroup, 3-year recurrence-free survival, the rate of change in surgical extent, and diagnostic accuracy.

This study explores the clinical application of 68Ga-DOTA-CCK-FS PET/CT in detecting cholecystokinin-2 receptor (CCK-2R)-positive tumors, particularly medullary thyroid cancer (MTC) and other malignancies. Led by Prof. Luo Yaping (PUMCH Nuclear Medicine) and Prof. Liu Zhibo (Peking University, radiochemistry expert), the trial will enroll 30-40 patients to compare 68Ga-DOTA-CCK-FS imaging with standard PET/CT (e.g., 18F-FDG or 68Ga-DOTATATE). The novel tracer shows higher tumor uptake and retention in preclinical studies, potentially improving diagnosis and treatment guidance for aggressive, CCK-2R-expressing cancers. The study leverages PUMCH's Class IV Radioactive Drug License for advanced radiopharmaceutical development. Risks are minimal (diagnostic radiation dose only), and participants receive free imaging assessments. Results aim to refine precision diagnostics for MTC and related tumors.

Cholecystokinin-2 (CCK2) receptor is overexpressed in more than 90% of MTC cases, and preclinical studies have shown that 68Ga-MGS5 (targeting CCK2) has good stability in vivo and is promising for diagnosis and staging of MTC. This prospective study will compare the diagnostic effects of 68Ga-MGS5 and 68Ga-DOTATATE on MTC primary foci, lymph node metastasis, and distant metastasis, and explore the effect of 68Ga-MGS5 PET/CT on the clinical staging (TNM staging) of MTC.

This study is a phase 2, open, single-site trial. The primary objective of this study is to prospectively evaluate the safety and efficacy in participants treated with Lu-177 DOTATATE (Lutathera) in unresectable or metastatic, somatostatin receptor-expressing neuroendocrine tumours (NET) in currently unlicensed indications (eg, bronchial and thymic NET; paraganglioma/phaeochromocytoma; medullary thyroid carcinoma; and those requiring repeat peptide receptor radionuclide therapy (PRRT) with 2 further cycles of Lutathera). The aim is to recruit a total of 75-110 participants. Each patient will receive 4 cycles of Lutathera with 8-12 weeks time interval (except patients requiring repeat PRRT will receive 2 further cycles of Lutathera). The follow-up period will be for 2 years from the date of the last treatment.