A total of 29 tumors (26 FTCs, 2 follicular thyroid tumors of uncertain malignant potential, and 1 oncocytic thyroid carcinoma) with known <i>TERT</i> promoter mutational status and <i>TERT</i> gene expression were assessed for 5hmC immunoreactivity using two antibodies (clones RM236 and 4D9). Here, TERT is linked to Thyroid Gland Oncocytic Follicular Carcinoma.