Multi-Tracer PET-Guided Therapy Selection and Theranostics in Radioiodine-Refractory Thyroid Cancer Patient Unsuitable for Tyrosine Kinase Inhibitor Therapy
Year: 2025
Type: article
Study design: Case Report
Abstract: Radioactive iodine refractory (RAIR) thyroid cancer and thyroglobulin elevated negative iodine scintigraphy constitute a fraction of thyroid cancer patients with poorer prognosis as opposed to radioiodine concentrating disease. Although not a rare condition and with several treatment options already explored, the selection of an optimal therapy that balances effective disease stabilization, symptom palliation, life prolongation, and minimal side effects remains essential. The use of multi-tracer positron emission tomography (PET) shows potential for radionuclide therapy selection in RAIR thyroid cancer. In this case report, multi-tracer PET imaging was employed to assess the feasibility of available theranostic options. While [68Ga]Ga-DOTATATE PET/computed tomography (CT) showed low-level somatostatin receptor expression, [68Ga]Ga-prostate specific membrane antigen (PSMA)-11 PET/CT revealed moderate and concordant PSMA expression across all lesions observed on [18F]F-FDG PET/CT, justifying [177Lu]Lu-PSMA-617 therapy in this patient.
Authors: Austin Saju, Sunita Sonavane, Sandip Basu
Language: English
Subfield: Endocrinology, Diabetes and Metabolism
Field: Medicine
Domain: Health Sciences
Open Access status: diamond
OpenAlex ID: W4414820786