The exclusion of these tumors from the molecular studies of thyroid cancer would certainly change the prevalence of genetic events described in thyroid cancer, both adult and pediatric, since the mutational profile of NIFTP is still unidentified but resembles that of follicular thyroid adenoma (FTA), with RAS mutations and PAX8-PPARγ fusion [152,163]. This evidence concerns the gene PAX8 and thyroid gland carcinoma.