Detailed analysis of public TCGA database from cBioPortal (http://cancergenome.nih.gov, accessed on 3 August 2020) showed that the expression of all the key m6A “writers”, “erasers”, and “readers”, and the iodide-handling genes (NIS, TPO, TSHR, and TG) were significantly different between normal thyroid tissues and thyroid cancer tissues (Figure 1A and Supplementary Table S2). Here, TPO is linked to thyroid gland carcinoma.