METTL3 and thyroid cancer: Less research has been done on m6A in thyroid cancer, but recent studies have revealed that METTL3 inhibits the progression of papillary thyroid carcinoma (37).With the development of recent years, in addition to surgical or conventional treatment, cancer immunotherapy has also made amazing progress in thyroid cancer (38, 39), but the relationship between thyroid cancer and immunity is also unclear.