Redifferentiation therapy in unresectable or metastatic radioactive iodine refractory thyroid cancer: an International Thyroid Oncology Group statement
In patients with follicular cell-derived thyroid cancer that have distant metastases and no iodine uptake, redifferentiation—ie, the restoration of tumoural 131I uptake with systemic therapy—is now possible. The use of mitogen-activated protein kinase (MAPK) inhibitors for a short period of time before the administration of high activity 131I shows promising results with iodine uptake restoration and tumour response. Redifferentiation has been used in patients with BRAF-mutated and RAS-mutated tumours in prospective trials and in the case of patients with RET or NTRK fusions.
